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ad321293 MM |
1 | /* Perform the semantic phase of parsing, i.e., the process of |
2 | building tree structure, checking semantic consistency, and | |
3 | building RTL. These routines are used both during actual parsing | |
c8094d83 | 4 | and during the instantiation of template functions. |
ad321293 | 5 | |
b2ebd268 | 6 | Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, |
056928b2 | 7 | 2008, 2009, 2010 Free Software Foundation, Inc. |
ad321293 | 8 | Written by Mark Mitchell (mmitchell@usa.net) based on code found |
c8094d83 | 9 | formerly in parse.y and pt.c. |
ad321293 | 10 | |
f5adbb8d | 11 | This file is part of GCC. |
ad321293 | 12 | |
f5adbb8d | 13 | GCC is free software; you can redistribute it and/or modify it |
ad321293 | 14 | under the terms of the GNU General Public License as published by |
e77f031d | 15 | the Free Software Foundation; either version 3, or (at your option) |
ad321293 | 16 | any later version. |
c8094d83 | 17 | |
f5adbb8d | 18 | GCC is distributed in the hope that it will be useful, but |
ad321293 MM |
19 | WITHOUT ANY WARRANTY; without even the implied warranty of |
20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
21 | General Public License for more details. | |
c8094d83 | 22 | |
e77f031d NC |
23 | You should have received a copy of the GNU General Public License |
24 | along with GCC; see the file COPYING3. If not see | |
25 | <http://www.gnu.org/licenses/>. */ | |
ad321293 MM |
26 | |
27 | #include "config.h" | |
8d052bc7 | 28 | #include "system.h" |
4977bab6 ZW |
29 | #include "coretypes.h" |
30 | #include "tm.h" | |
ad321293 MM |
31 | #include "tree.h" |
32 | #include "cp-tree.h" | |
39dabefd | 33 | #include "c-family/c-common.h" |
25af8512 | 34 | #include "tree-inline.h" |
6de9cd9a | 35 | #include "tree-mudflap.h" |
12027a89 | 36 | #include "toplev.h" |
84df082b | 37 | #include "flags.h" |
225ff119 | 38 | #include "output.h" |
ea11ca7e | 39 | #include "timevar.h" |
6de9cd9a | 40 | #include "diagnostic.h" |
8cd2462c | 41 | #include "cgraph.h" |
325c3691 | 42 | #include "tree-iterator.h" |
3e1f1ba5 | 43 | #include "vec.h" |
44d10c10 | 44 | #include "target.h" |
726a989a | 45 | #include "gimple.h" |
7a8cba34 | 46 | #include "bitmap.h" |
ad321293 MM |
47 | |
48 | /* There routines provide a modular interface to perform many parsing | |
49 | operations. They may therefore be used during actual parsing, or | |
50 | during template instantiation, which may be regarded as a | |
0b4d5576 | 51 | degenerate form of parsing. */ |
ad321293 | 52 | |
3a978d72 | 53 | static tree maybe_convert_cond (tree); |
6de9cd9a | 54 | static tree finalize_nrv_r (tree *, int *, void *); |
d5f4eddd | 55 | static tree capture_decltype (tree); |
9660afe0 | 56 | static tree thisify_lambda_field (tree); |
4985cde3 | 57 | |
558475f0 | 58 | |
8d241e0b KL |
59 | /* Deferred Access Checking Overview |
60 | --------------------------------- | |
61 | ||
62 | Most C++ expressions and declarations require access checking | |
63 | to be performed during parsing. However, in several cases, | |
64 | this has to be treated differently. | |
65 | ||
66 | For member declarations, access checking has to be deferred | |
67 | until more information about the declaration is known. For | |
68 | example: | |
69 | ||
70 | class A { | |
0cbd7506 | 71 | typedef int X; |
8d241e0b | 72 | public: |
0cbd7506 | 73 | X f(); |
8d241e0b KL |
74 | }; |
75 | ||
76 | A::X A::f(); | |
77 | A::X g(); | |
78 | ||
79 | When we are parsing the function return type `A::X', we don't | |
80 | really know if this is allowed until we parse the function name. | |
81 | ||
82 | Furthermore, some contexts require that access checking is | |
83 | never performed at all. These include class heads, and template | |
84 | instantiations. | |
85 | ||
86 | Typical use of access checking functions is described here: | |
c8094d83 | 87 | |
8d241e0b KL |
88 | 1. When we enter a context that requires certain access checking |
89 | mode, the function `push_deferring_access_checks' is called with | |
90 | DEFERRING argument specifying the desired mode. Access checking | |
91 | may be performed immediately (dk_no_deferred), deferred | |
92 | (dk_deferred), or not performed (dk_no_check). | |
93 | ||
94 | 2. When a declaration such as a type, or a variable, is encountered, | |
95 | the function `perform_or_defer_access_check' is called. It | |
d6b418fa | 96 | maintains a VEC of all deferred checks. |
8d241e0b KL |
97 | |
98 | 3. The global `current_class_type' or `current_function_decl' is then | |
99 | setup by the parser. `enforce_access' relies on these information | |
100 | to check access. | |
101 | ||
102 | 4. Upon exiting the context mentioned in step 1, | |
103 | `perform_deferred_access_checks' is called to check all declaration | |
d6b418fa | 104 | stored in the VEC. `pop_deferring_access_checks' is then |
8d241e0b KL |
105 | called to restore the previous access checking mode. |
106 | ||
107 | In case of parsing error, we simply call `pop_deferring_access_checks' | |
108 | without `perform_deferred_access_checks'. */ | |
109 | ||
d1b38208 | 110 | typedef struct GTY(()) deferred_access { |
d6b418fa | 111 | /* A VEC representing name-lookups for which we have deferred |
3e1f1ba5 NS |
112 | checking access controls. We cannot check the accessibility of |
113 | names used in a decl-specifier-seq until we know what is being | |
114 | declared because code like: | |
115 | ||
c8094d83 | 116 | class A { |
0cbd7506 MS |
117 | class B {}; |
118 | B* f(); | |
3e1f1ba5 NS |
119 | } |
120 | ||
121 | A::B* A::f() { return 0; } | |
122 | ||
d6b418fa SM |
123 | is valid, even though `A::B' is not generally accessible. */ |
124 | VEC (deferred_access_check,gc)* GTY(()) deferred_access_checks; | |
c8094d83 | 125 | |
3e1f1ba5 NS |
126 | /* The current mode of access checks. */ |
127 | enum deferring_kind deferring_access_checks_kind; | |
c8094d83 | 128 | |
3e1f1ba5 | 129 | } deferred_access; |
d4e6fecb NS |
130 | DEF_VEC_O (deferred_access); |
131 | DEF_VEC_ALLOC_O (deferred_access,gc); | |
3e1f1ba5 | 132 | |
cf22909c | 133 | /* Data for deferred access checking. */ |
d4e6fecb | 134 | static GTY(()) VEC(deferred_access,gc) *deferred_access_stack; |
3e1f1ba5 | 135 | static GTY(()) unsigned deferred_access_no_check; |
cf22909c KL |
136 | |
137 | /* Save the current deferred access states and start deferred | |
138 | access checking iff DEFER_P is true. */ | |
139 | ||
572c2b17 AP |
140 | void |
141 | push_deferring_access_checks (deferring_kind deferring) | |
cf22909c | 142 | { |
78757caa KL |
143 | /* For context like template instantiation, access checking |
144 | disabling applies to all nested context. */ | |
3e1f1ba5 NS |
145 | if (deferred_access_no_check || deferring == dk_no_check) |
146 | deferred_access_no_check++; | |
cf22909c | 147 | else |
3e1f1ba5 NS |
148 | { |
149 | deferred_access *ptr; | |
cf22909c | 150 | |
d4e6fecb | 151 | ptr = VEC_safe_push (deferred_access, gc, deferred_access_stack, NULL); |
d6b418fa | 152 | ptr->deferred_access_checks = NULL; |
3e1f1ba5 NS |
153 | ptr->deferring_access_checks_kind = deferring; |
154 | } | |
cf22909c KL |
155 | } |
156 | ||
157 | /* Resume deferring access checks again after we stopped doing | |
158 | this previously. */ | |
159 | ||
572c2b17 AP |
160 | void |
161 | resume_deferring_access_checks (void) | |
cf22909c | 162 | { |
3e1f1ba5 NS |
163 | if (!deferred_access_no_check) |
164 | VEC_last (deferred_access, deferred_access_stack) | |
165 | ->deferring_access_checks_kind = dk_deferred; | |
cf22909c KL |
166 | } |
167 | ||
168 | /* Stop deferring access checks. */ | |
169 | ||
572c2b17 AP |
170 | void |
171 | stop_deferring_access_checks (void) | |
cf22909c | 172 | { |
3e1f1ba5 NS |
173 | if (!deferred_access_no_check) |
174 | VEC_last (deferred_access, deferred_access_stack) | |
175 | ->deferring_access_checks_kind = dk_no_deferred; | |
cf22909c KL |
176 | } |
177 | ||
178 | /* Discard the current deferred access checks and restore the | |
179 | previous states. */ | |
180 | ||
572c2b17 AP |
181 | void |
182 | pop_deferring_access_checks (void) | |
cf22909c | 183 | { |
3e1f1ba5 NS |
184 | if (deferred_access_no_check) |
185 | deferred_access_no_check--; | |
186 | else | |
187 | VEC_pop (deferred_access, deferred_access_stack); | |
cf22909c KL |
188 | } |
189 | ||
c8094d83 MS |
190 | /* Returns a TREE_LIST representing the deferred checks. |
191 | The TREE_PURPOSE of each node is the type through which the | |
cf22909c KL |
192 | access occurred; the TREE_VALUE is the declaration named. |
193 | */ | |
194 | ||
d6b418fa | 195 | VEC (deferred_access_check,gc)* |
572c2b17 | 196 | get_deferred_access_checks (void) |
cf22909c | 197 | { |
3e1f1ba5 NS |
198 | if (deferred_access_no_check) |
199 | return NULL; | |
200 | else | |
201 | return (VEC_last (deferred_access, deferred_access_stack) | |
202 | ->deferred_access_checks); | |
cf22909c KL |
203 | } |
204 | ||
205 | /* Take current deferred checks and combine with the | |
206 | previous states if we also defer checks previously. | |
207 | Otherwise perform checks now. */ | |
208 | ||
572c2b17 AP |
209 | void |
210 | pop_to_parent_deferring_access_checks (void) | |
cf22909c | 211 | { |
3e1f1ba5 NS |
212 | if (deferred_access_no_check) |
213 | deferred_access_no_check--; | |
214 | else | |
215 | { | |
d6b418fa | 216 | VEC (deferred_access_check,gc) *checks; |
3e1f1ba5 NS |
217 | deferred_access *ptr; |
218 | ||
219 | checks = (VEC_last (deferred_access, deferred_access_stack) | |
220 | ->deferred_access_checks); | |
221 | ||
222 | VEC_pop (deferred_access, deferred_access_stack); | |
223 | ptr = VEC_last (deferred_access, deferred_access_stack); | |
224 | if (ptr->deferring_access_checks_kind == dk_no_deferred) | |
225 | { | |
226 | /* Check access. */ | |
d6b418fa | 227 | perform_access_checks (checks); |
3e1f1ba5 NS |
228 | } |
229 | else | |
230 | { | |
231 | /* Merge with parent. */ | |
d6b418fa SM |
232 | int i, j; |
233 | deferred_access_check *chk, *probe; | |
c8094d83 | 234 | |
d6b418fa SM |
235 | for (i = 0 ; |
236 | VEC_iterate (deferred_access_check, checks, i, chk) ; | |
237 | ++i) | |
3e1f1ba5 | 238 | { |
d6b418fa SM |
239 | for (j = 0 ; |
240 | VEC_iterate (deferred_access_check, | |
241 | ptr->deferred_access_checks, j, probe) ; | |
242 | ++j) | |
243 | { | |
244 | if (probe->binfo == chk->binfo && | |
245 | probe->decl == chk->decl && | |
246 | probe->diag_decl == chk->diag_decl) | |
247 | goto found; | |
248 | } | |
3e1f1ba5 | 249 | /* Insert into parent's checks. */ |
d6b418fa SM |
250 | VEC_safe_push (deferred_access_check, gc, |
251 | ptr->deferred_access_checks, chk); | |
3e1f1ba5 NS |
252 | found:; |
253 | } | |
254 | } | |
255 | } | |
cf22909c KL |
256 | } |
257 | ||
6b648482 MM |
258 | /* Perform the access checks in CHECKS. The TREE_PURPOSE of each node |
259 | is the BINFO indicating the qualifying scope used to access the | |
260 | DECL node stored in the TREE_VALUE of the node. */ | |
261 | ||
262 | void | |
d6b418fa | 263 | perform_access_checks (VEC (deferred_access_check,gc)* checks) |
6b648482 | 264 | { |
d6b418fa SM |
265 | int i; |
266 | deferred_access_check *chk; | |
267 | ||
268 | if (!checks) | |
269 | return; | |
270 | ||
271 | for (i = 0 ; VEC_iterate (deferred_access_check, checks, i, chk) ; ++i) | |
272 | enforce_access (chk->binfo, chk->decl, chk->diag_decl); | |
6b648482 MM |
273 | } |
274 | ||
25903d03 KL |
275 | /* Perform the deferred access checks. |
276 | ||
277 | After performing the checks, we still have to keep the list | |
278 | `deferred_access_stack->deferred_access_checks' since we may want | |
279 | to check access for them again later in a different context. | |
280 | For example: | |
281 | ||
282 | class A { | |
283 | typedef int X; | |
284 | static X a; | |
285 | }; | |
286 | A::X A::a, x; // No error for `A::a', error for `x' | |
287 | ||
288 | We have to perform deferred access of `A::X', first with `A::a', | |
289 | next with `x'. */ | |
cf22909c | 290 | |
572c2b17 AP |
291 | void |
292 | perform_deferred_access_checks (void) | |
cf22909c | 293 | { |
6b648482 | 294 | perform_access_checks (get_deferred_access_checks ()); |
cf22909c KL |
295 | } |
296 | ||
297 | /* Defer checking the accessibility of DECL, when looked up in | |
02022f3a | 298 | BINFO. DIAG_DECL is the declaration to use to print diagnostics. */ |
cf22909c | 299 | |
572c2b17 | 300 | void |
02022f3a | 301 | perform_or_defer_access_check (tree binfo, tree decl, tree diag_decl) |
cf22909c | 302 | { |
d6b418fa | 303 | int i; |
3e1f1ba5 | 304 | deferred_access *ptr; |
d6b418fa SM |
305 | deferred_access_check *chk; |
306 | deferred_access_check *new_access; | |
307 | ||
cf22909c | 308 | |
3e1f1ba5 NS |
309 | /* Exit if we are in a context that no access checking is performed. |
310 | */ | |
311 | if (deferred_access_no_check) | |
0f2a66c9 | 312 | return; |
c8094d83 | 313 | |
50bc768d | 314 | gcc_assert (TREE_CODE (binfo) == TREE_BINFO); |
0f2a66c9 | 315 | |
3e1f1ba5 | 316 | ptr = VEC_last (deferred_access, deferred_access_stack); |
c8094d83 | 317 | |
cf22909c | 318 | /* If we are not supposed to defer access checks, just check now. */ |
3e1f1ba5 | 319 | if (ptr->deferring_access_checks_kind == dk_no_deferred) |
cf22909c | 320 | { |
02022f3a | 321 | enforce_access (binfo, decl, diag_decl); |
cf22909c KL |
322 | return; |
323 | } | |
c8094d83 | 324 | |
cf22909c | 325 | /* See if we are already going to perform this check. */ |
d6b418fa SM |
326 | for (i = 0 ; |
327 | VEC_iterate (deferred_access_check, | |
328 | ptr->deferred_access_checks, i, chk) ; | |
329 | ++i) | |
330 | { | |
331 | if (chk->decl == decl && chk->binfo == binfo && | |
332 | chk->diag_decl == diag_decl) | |
333 | { | |
334 | return; | |
335 | } | |
336 | } | |
cf22909c | 337 | /* If not, record the check. */ |
d6b418fa SM |
338 | new_access = |
339 | VEC_safe_push (deferred_access_check, gc, | |
340 | ptr->deferred_access_checks, 0); | |
341 | new_access->binfo = binfo; | |
342 | new_access->decl = decl; | |
343 | new_access->diag_decl = diag_decl; | |
cf22909c KL |
344 | } |
345 | ||
838dfd8a | 346 | /* Returns nonzero if the current statement is a full expression, |
f2c5f623 BC |
347 | i.e. temporaries created during that statement should be destroyed |
348 | at the end of the statement. */ | |
35b1567d | 349 | |
f2c5f623 | 350 | int |
3a978d72 | 351 | stmts_are_full_exprs_p (void) |
f2c5f623 | 352 | { |
ae499cce MM |
353 | return current_stmt_tree ()->stmts_are_full_exprs_p; |
354 | } | |
355 | ||
ed3d0b14 ILT |
356 | /* T is a statement. Add it to the statement-tree. This is the C++ |
357 | version. The C/ObjC frontends have a slightly different version of | |
358 | this function. */ | |
359 | ||
360 | tree | |
361 | add_stmt (tree t) | |
362 | { | |
363 | enum tree_code code = TREE_CODE (t); | |
364 | ||
365 | if (EXPR_P (t) && code != LABEL_EXPR) | |
366 | { | |
367 | if (!EXPR_HAS_LOCATION (t)) | |
368 | SET_EXPR_LOCATION (t, input_location); | |
369 | ||
370 | /* When we expand a statement-tree, we must know whether or not the | |
371 | statements are full-expressions. We record that fact here. */ | |
372 | STMT_IS_FULL_EXPR_P (t) = stmts_are_full_exprs_p (); | |
373 | } | |
374 | ||
375 | /* Add T to the statement-tree. Non-side-effect statements need to be | |
376 | recorded during statement expressions. */ | |
377 | append_to_statement_list_force (t, &cur_stmt_list); | |
378 | ||
379 | return t; | |
380 | } | |
381 | ||
e8924938 | 382 | /* Returns the stmt_tree to which statements are currently being added. */ |
ae499cce MM |
383 | |
384 | stmt_tree | |
3a978d72 | 385 | current_stmt_tree (void) |
ae499cce | 386 | { |
c8094d83 MS |
387 | return (cfun |
388 | ? &cfun->language->base.x_stmt_tree | |
ae499cce | 389 | : &scope_chain->x_stmt_tree); |
f2c5f623 | 390 | } |
35b1567d | 391 | |
543a0daa RH |
392 | /* If statements are full expressions, wrap STMT in a CLEANUP_POINT_EXPR. */ |
393 | ||
394 | static tree | |
395 | maybe_cleanup_point_expr (tree expr) | |
396 | { | |
397 | if (!processing_template_decl && stmts_are_full_exprs_p ()) | |
0ad28dde | 398 | expr = fold_build_cleanup_point_expr (TREE_TYPE (expr), expr); |
543a0daa RH |
399 | return expr; |
400 | } | |
401 | ||
0ad28dde | 402 | /* Like maybe_cleanup_point_expr except have the type of the new expression be |
22423a1f KH |
403 | void so we don't need to create a temporary variable to hold the inner |
404 | expression. The reason why we do this is because the original type might be | |
405 | an aggregate and we cannot create a temporary variable for that type. */ | |
0ad28dde AP |
406 | |
407 | static tree | |
408 | maybe_cleanup_point_expr_void (tree expr) | |
409 | { | |
410 | if (!processing_template_decl && stmts_are_full_exprs_p ()) | |
411 | expr = fold_build_cleanup_point_expr (void_type_node, expr); | |
412 | return expr; | |
413 | } | |
414 | ||
415 | ||
416 | ||
543a0daa RH |
417 | /* Create a declaration statement for the declaration given by the DECL. */ |
418 | ||
419 | void | |
350fae66 | 420 | add_decl_expr (tree decl) |
543a0daa | 421 | { |
c2255bc4 | 422 | tree r = build_stmt (input_location, DECL_EXPR, decl); |
b187901e AP |
423 | if (DECL_INITIAL (decl) |
424 | || (DECL_SIZE (decl) && TREE_SIDE_EFFECTS (DECL_SIZE (decl)))) | |
0ad28dde | 425 | r = maybe_cleanup_point_expr_void (r); |
543a0daa RH |
426 | add_stmt (r); |
427 | } | |
428 | ||
f2c5f623 | 429 | /* Finish a scope. */ |
35b1567d | 430 | |
20aff0b3 | 431 | tree |
325c3691 | 432 | do_poplevel (tree stmt_list) |
35b1567d | 433 | { |
325c3691 | 434 | tree block = NULL; |
35b1567d | 435 | |
f2c5f623 | 436 | if (stmts_are_full_exprs_p ()) |
325c3691 | 437 | block = poplevel (kept_level_p (), 1, 0); |
f2c5f623 | 438 | |
325c3691 | 439 | stmt_list = pop_stmt_list (stmt_list); |
c8094d83 | 440 | |
325c3691 RH |
441 | if (!processing_template_decl) |
442 | { | |
c2255bc4 | 443 | stmt_list = c_build_bind_expr (input_location, block, stmt_list); |
325c3691 | 444 | /* ??? See c_end_compound_stmt re statement expressions. */ |
35b1567d BC |
445 | } |
446 | ||
325c3691 | 447 | return stmt_list; |
35b1567d BC |
448 | } |
449 | ||
c8094d83 | 450 | /* Begin a new scope. */ |
35b1567d | 451 | |
325c3691 | 452 | static tree |
92bc1323 | 453 | do_pushlevel (scope_kind sk) |
35b1567d | 454 | { |
325c3691 | 455 | tree ret = push_stmt_list (); |
f2c5f623 | 456 | if (stmts_are_full_exprs_p ()) |
325c3691 RH |
457 | begin_scope (sk, NULL); |
458 | return ret; | |
459 | } | |
5a508662 RH |
460 | |
461 | /* Queue a cleanup. CLEANUP is an expression/statement to be executed | |
462 | when the current scope is exited. EH_ONLY is true when this is not | |
463 | meant to apply to normal control flow transfer. */ | |
464 | ||
465 | void | |
466 | push_cleanup (tree decl, tree cleanup, bool eh_only) | |
467 | { | |
c2255bc4 | 468 | tree stmt = build_stmt (input_location, CLEANUP_STMT, NULL, cleanup, decl); |
5a508662 RH |
469 | CLEANUP_EH_ONLY (stmt) = eh_only; |
470 | add_stmt (stmt); | |
471 | CLEANUP_BODY (stmt) = push_stmt_list (); | |
472 | } | |
325c3691 | 473 | |
caf2523d RH |
474 | /* Begin a conditional that might contain a declaration. When generating |
475 | normal code, we want the declaration to appear before the statement | |
476 | containing the conditional. When generating template code, we want the | |
350fae66 | 477 | conditional to be rendered as the raw DECL_EXPR. */ |
325c3691 RH |
478 | |
479 | static void | |
caf2523d | 480 | begin_cond (tree *cond_p) |
325c3691 | 481 | { |
caf2523d RH |
482 | if (processing_template_decl) |
483 | *cond_p = push_stmt_list (); | |
484 | } | |
485 | ||
486 | /* Finish such a conditional. */ | |
487 | ||
488 | static void | |
489 | finish_cond (tree *cond_p, tree expr) | |
490 | { | |
491 | if (processing_template_decl) | |
35b1567d | 492 | { |
caf2523d | 493 | tree cond = pop_stmt_list (*cond_p); |
350fae66 | 494 | if (TREE_CODE (cond) == DECL_EXPR) |
caf2523d | 495 | expr = cond; |
5d80a306 | 496 | |
7b3e2d46 | 497 | if (check_for_bare_parameter_packs (expr)) |
4439d02f | 498 | *cond_p = error_mark_node; |
35b1567d | 499 | } |
caf2523d | 500 | *cond_p = expr; |
35b1567d BC |
501 | } |
502 | ||
325c3691 RH |
503 | /* If *COND_P specifies a conditional with a declaration, transform the |
504 | loop such that | |
0cbd7506 MS |
505 | while (A x = 42) { } |
506 | for (; A x = 42;) { } | |
325c3691 | 507 | becomes |
0cbd7506 MS |
508 | while (true) { A x = 42; if (!x) break; } |
509 | for (;;) { A x = 42; if (!x) break; } | |
caf2523d RH |
510 | The statement list for BODY will be empty if the conditional did |
511 | not declare anything. */ | |
c8094d83 | 512 | |
325c3691 | 513 | static void |
caf2523d | 514 | simplify_loop_decl_cond (tree *cond_p, tree body) |
325c3691 | 515 | { |
caf2523d | 516 | tree cond, if_stmt; |
325c3691 | 517 | |
caf2523d RH |
518 | if (!TREE_SIDE_EFFECTS (body)) |
519 | return; | |
325c3691 | 520 | |
caf2523d RH |
521 | cond = *cond_p; |
522 | *cond_p = boolean_true_node; | |
c8094d83 | 523 | |
caf2523d | 524 | if_stmt = begin_if_stmt (); |
5ade1ed2 | 525 | cond = cp_build_unary_op (TRUTH_NOT_EXPR, cond, 0, tf_warning_or_error); |
caf2523d RH |
526 | finish_if_stmt_cond (cond, if_stmt); |
527 | finish_break_stmt (); | |
528 | finish_then_clause (if_stmt); | |
529 | finish_if_stmt (if_stmt); | |
530 | } | |
325c3691 | 531 | |
35b1567d BC |
532 | /* Finish a goto-statement. */ |
533 | ||
3e4d04a1 | 534 | tree |
3a978d72 | 535 | finish_goto_stmt (tree destination) |
35b1567d BC |
536 | { |
537 | if (TREE_CODE (destination) == IDENTIFIER_NODE) | |
538 | destination = lookup_label (destination); | |
539 | ||
540 | /* We warn about unused labels with -Wunused. That means we have to | |
541 | mark the used labels as used. */ | |
542 | if (TREE_CODE (destination) == LABEL_DECL) | |
543 | TREE_USED (destination) = 1; | |
fc2b8477 MM |
544 | else |
545 | { | |
fc2b8477 | 546 | if (!processing_template_decl) |
f5651df1 | 547 | { |
f5651df1 JJ |
548 | destination = cp_convert (ptr_type_node, destination); |
549 | if (error_operand_p (destination)) | |
550 | return NULL_TREE; | |
551 | } | |
fc2b8477 MM |
552 | /* We don't inline calls to functions with computed gotos. |
553 | Those functions are typically up to some funny business, | |
554 | and may be depending on the labels being at particular | |
555 | addresses, or some such. */ | |
556 | DECL_UNINLINABLE (current_function_decl) = 1; | |
557 | } | |
c8094d83 | 558 | |
35b1567d BC |
559 | check_goto (destination); |
560 | ||
c2255bc4 | 561 | return add_stmt (build_stmt (input_location, GOTO_EXPR, destination)); |
35b1567d BC |
562 | } |
563 | ||
ed5511d9 | 564 | /* COND is the condition-expression for an if, while, etc., |
d4033c81 MLI |
565 | statement. Convert it to a boolean value, if appropriate. |
566 | In addition, verify sequence points if -Wsequence-point is enabled. */ | |
ed5511d9 | 567 | |
8ce33230 | 568 | static tree |
3a978d72 | 569 | maybe_convert_cond (tree cond) |
ed5511d9 MM |
570 | { |
571 | /* Empty conditions remain empty. */ | |
572 | if (!cond) | |
573 | return NULL_TREE; | |
574 | ||
575 | /* Wait until we instantiate templates before doing conversion. */ | |
576 | if (processing_template_decl) | |
577 | return cond; | |
578 | ||
d4033c81 MLI |
579 | if (warn_sequence_point) |
580 | verify_sequence_points (cond); | |
581 | ||
ed5511d9 MM |
582 | /* Do the conversion. */ |
583 | cond = convert_from_reference (cond); | |
fbc8d2d3 ILT |
584 | |
585 | if (TREE_CODE (cond) == MODIFY_EXPR | |
586 | && !TREE_NO_WARNING (cond) | |
587 | && warn_parentheses) | |
588 | { | |
589 | warning (OPT_Wparentheses, | |
590 | "suggest parentheses around assignment used as truth value"); | |
591 | TREE_NO_WARNING (cond) = 1; | |
592 | } | |
593 | ||
ed5511d9 MM |
594 | return condition_conversion (cond); |
595 | } | |
596 | ||
9bfadf57 | 597 | /* Finish an expression-statement, whose EXPRESSION is as indicated. */ |
a7e4cfa0 | 598 | |
3e4d04a1 | 599 | tree |
3a978d72 | 600 | finish_expr_stmt (tree expr) |
ad321293 | 601 | { |
3e4d04a1 RH |
602 | tree r = NULL_TREE; |
603 | ||
ce4a0391 | 604 | if (expr != NULL_TREE) |
ad321293 | 605 | { |
a5bcc582 | 606 | if (!processing_template_decl) |
3a5b9284 RH |
607 | { |
608 | if (warn_sequence_point) | |
609 | verify_sequence_points (expr); | |
5ade1ed2 | 610 | expr = convert_to_void (expr, "statement", tf_warning_or_error); |
3a5b9284 | 611 | } |
47d4c811 | 612 | else if (!type_dependent_expression_p (expr)) |
5ade1ed2 DG |
613 | convert_to_void (build_non_dependent_expr (expr), "statement", |
614 | tf_warning_or_error); | |
325c3691 | 615 | |
7b3e2d46 | 616 | if (check_for_bare_parameter_packs (expr)) |
4439d02f | 617 | expr = error_mark_node; |
5d80a306 | 618 | |
325c3691 | 619 | /* Simplification of inner statement expressions, compound exprs, |
ca5b80f3 | 620 | etc can result in us already having an EXPR_STMT. */ |
543a0daa RH |
621 | if (TREE_CODE (expr) != CLEANUP_POINT_EXPR) |
622 | { | |
623 | if (TREE_CODE (expr) != EXPR_STMT) | |
c2255bc4 | 624 | expr = build_stmt (input_location, EXPR_STMT, expr); |
0ad28dde | 625 | expr = maybe_cleanup_point_expr_void (expr); |
543a0daa RH |
626 | } |
627 | ||
325c3691 | 628 | r = add_stmt (expr); |
35b1567d | 629 | } |
364460b6 | 630 | |
35b1567d | 631 | finish_stmt (); |
558475f0 | 632 | |
3e4d04a1 | 633 | return r; |
35b1567d BC |
634 | } |
635 | ||
35b1567d | 636 | |
ad321293 MM |
637 | /* Begin an if-statement. Returns a newly created IF_STMT if |
638 | appropriate. */ | |
639 | ||
640 | tree | |
3a978d72 | 641 | begin_if_stmt (void) |
ad321293 | 642 | { |
325c3691 RH |
643 | tree r, scope; |
644 | scope = do_pushlevel (sk_block); | |
c2255bc4 | 645 | r = build_stmt (input_location, IF_STMT, NULL_TREE, NULL_TREE, NULL_TREE); |
325c3691 | 646 | TREE_CHAIN (r) = scope; |
caf2523d | 647 | begin_cond (&IF_COND (r)); |
ad321293 MM |
648 | return r; |
649 | } | |
650 | ||
651 | /* Process the COND of an if-statement, which may be given by | |
652 | IF_STMT. */ | |
653 | ||
c8094d83 | 654 | void |
3a978d72 | 655 | finish_if_stmt_cond (tree cond, tree if_stmt) |
ad321293 | 656 | { |
caf2523d RH |
657 | finish_cond (&IF_COND (if_stmt), maybe_convert_cond (cond)); |
658 | add_stmt (if_stmt); | |
325c3691 | 659 | THEN_CLAUSE (if_stmt) = push_stmt_list (); |
ad321293 MM |
660 | } |
661 | ||
662 | /* Finish the then-clause of an if-statement, which may be given by | |
663 | IF_STMT. */ | |
664 | ||
665 | tree | |
3a978d72 | 666 | finish_then_clause (tree if_stmt) |
ad321293 | 667 | { |
325c3691 | 668 | THEN_CLAUSE (if_stmt) = pop_stmt_list (THEN_CLAUSE (if_stmt)); |
35b1567d | 669 | return if_stmt; |
ad321293 MM |
670 | } |
671 | ||
672 | /* Begin the else-clause of an if-statement. */ | |
673 | ||
325c3691 RH |
674 | void |
675 | begin_else_clause (tree if_stmt) | |
ad321293 | 676 | { |
325c3691 | 677 | ELSE_CLAUSE (if_stmt) = push_stmt_list (); |
ad321293 MM |
678 | } |
679 | ||
680 | /* Finish the else-clause of an if-statement, which may be given by | |
681 | IF_STMT. */ | |
682 | ||
683 | void | |
3a978d72 | 684 | finish_else_clause (tree if_stmt) |
ad321293 | 685 | { |
325c3691 | 686 | ELSE_CLAUSE (if_stmt) = pop_stmt_list (ELSE_CLAUSE (if_stmt)); |
ad321293 MM |
687 | } |
688 | ||
dfbb4f34 | 689 | /* Finish an if-statement. */ |
ad321293 | 690 | |
c8094d83 | 691 | void |
325c3691 | 692 | finish_if_stmt (tree if_stmt) |
ad321293 | 693 | { |
325c3691 RH |
694 | tree scope = TREE_CHAIN (if_stmt); |
695 | TREE_CHAIN (if_stmt) = NULL; | |
696 | add_stmt (do_poplevel (scope)); | |
ad321293 | 697 | finish_stmt (); |
35b1567d BC |
698 | } |
699 | ||
ad321293 MM |
700 | /* Begin a while-statement. Returns a newly created WHILE_STMT if |
701 | appropriate. */ | |
702 | ||
703 | tree | |
3a978d72 | 704 | begin_while_stmt (void) |
ad321293 MM |
705 | { |
706 | tree r; | |
c2255bc4 | 707 | r = build_stmt (input_location, WHILE_STMT, NULL_TREE, NULL_TREE); |
ae499cce | 708 | add_stmt (r); |
325c3691 | 709 | WHILE_BODY (r) = do_pushlevel (sk_block); |
caf2523d | 710 | begin_cond (&WHILE_COND (r)); |
ad321293 MM |
711 | return r; |
712 | } | |
713 | ||
27d26ee7 | 714 | /* Process the COND of a while-statement, which may be given by |
ad321293 MM |
715 | WHILE_STMT. */ |
716 | ||
c8094d83 | 717 | void |
3a978d72 | 718 | finish_while_stmt_cond (tree cond, tree while_stmt) |
ad321293 | 719 | { |
caf2523d RH |
720 | finish_cond (&WHILE_COND (while_stmt), maybe_convert_cond (cond)); |
721 | simplify_loop_decl_cond (&WHILE_COND (while_stmt), WHILE_BODY (while_stmt)); | |
ad321293 MM |
722 | } |
723 | ||
724 | /* Finish a while-statement, which may be given by WHILE_STMT. */ | |
725 | ||
c8094d83 | 726 | void |
3a978d72 | 727 | finish_while_stmt (tree while_stmt) |
ad321293 | 728 | { |
325c3691 | 729 | WHILE_BODY (while_stmt) = do_poplevel (WHILE_BODY (while_stmt)); |
ad321293 MM |
730 | finish_stmt (); |
731 | } | |
732 | ||
733 | /* Begin a do-statement. Returns a newly created DO_STMT if | |
734 | appropriate. */ | |
735 | ||
736 | tree | |
3a978d72 | 737 | begin_do_stmt (void) |
ad321293 | 738 | { |
c2255bc4 | 739 | tree r = build_stmt (input_location, DO_STMT, NULL_TREE, NULL_TREE); |
ae499cce | 740 | add_stmt (r); |
325c3691 | 741 | DO_BODY (r) = push_stmt_list (); |
35b1567d | 742 | return r; |
ad321293 MM |
743 | } |
744 | ||
745 | /* Finish the body of a do-statement, which may be given by DO_STMT. */ | |
746 | ||
747 | void | |
3a978d72 | 748 | finish_do_body (tree do_stmt) |
ad321293 | 749 | { |
62e00e94 DM |
750 | tree body = DO_BODY (do_stmt) = pop_stmt_list (DO_BODY (do_stmt)); |
751 | ||
752 | if (TREE_CODE (body) == STATEMENT_LIST && STATEMENT_LIST_TAIL (body)) | |
753 | body = STATEMENT_LIST_TAIL (body)->stmt; | |
754 | ||
755 | if (IS_EMPTY_STMT (body)) | |
756 | warning (OPT_Wempty_body, | |
757 | "suggest explicit braces around empty body in %<do%> statement"); | |
ad321293 MM |
758 | } |
759 | ||
760 | /* Finish a do-statement, which may be given by DO_STMT, and whose | |
761 | COND is as indicated. */ | |
762 | ||
763 | void | |
3a978d72 | 764 | finish_do_stmt (tree cond, tree do_stmt) |
ad321293 | 765 | { |
ed5511d9 | 766 | cond = maybe_convert_cond (cond); |
35b1567d BC |
767 | DO_COND (do_stmt) = cond; |
768 | finish_stmt (); | |
769 | } | |
ed5511d9 | 770 | |
ad321293 MM |
771 | /* Finish a return-statement. The EXPRESSION returned, if any, is as |
772 | indicated. */ | |
773 | ||
3e4d04a1 | 774 | tree |
3a978d72 | 775 | finish_return_stmt (tree expr) |
ad321293 | 776 | { |
3e4d04a1 | 777 | tree r; |
0c9b182b | 778 | bool no_warning; |
3e4d04a1 | 779 | |
0c9b182b | 780 | expr = check_return_expr (expr, &no_warning); |
1799e5d5 RH |
781 | |
782 | if (flag_openmp && !check_omp_return ()) | |
783 | return error_mark_node; | |
35b1567d | 784 | if (!processing_template_decl) |
efee38a9 | 785 | { |
d4033c81 MLI |
786 | if (warn_sequence_point) |
787 | verify_sequence_points (expr); | |
788 | ||
44d10c10 | 789 | if (DECL_DESTRUCTOR_P (current_function_decl) |
c8094d83 | 790 | || (DECL_CONSTRUCTOR_P (current_function_decl) |
44d10c10 | 791 | && targetm.cxx.cdtor_returns_this ())) |
efee38a9 MM |
792 | { |
793 | /* Similarly, all destructors must run destructors for | |
794 | base-classes before returning. So, all returns in a | |
dfbb4f34 | 795 | destructor get sent to the DTOR_LABEL; finish_function emits |
efee38a9 | 796 | code to return a value there. */ |
44d10c10 | 797 | return finish_goto_stmt (cdtor_label); |
efee38a9 MM |
798 | } |
799 | } | |
543a0daa | 800 | |
c2255bc4 | 801 | r = build_stmt (input_location, RETURN_EXPR, expr); |
0c9b182b | 802 | TREE_NO_WARNING (r) |= no_warning; |
0ad28dde | 803 | r = maybe_cleanup_point_expr_void (r); |
543a0daa | 804 | r = add_stmt (r); |
35b1567d | 805 | finish_stmt (); |
3e4d04a1 RH |
806 | |
807 | return r; | |
35b1567d | 808 | } |
efee38a9 | 809 | |
ad321293 MM |
810 | /* Begin a for-statement. Returns a new FOR_STMT if appropriate. */ |
811 | ||
812 | tree | |
3a978d72 | 813 | begin_for_stmt (void) |
ad321293 MM |
814 | { |
815 | tree r; | |
816 | ||
c2255bc4 | 817 | r = build_stmt (input_location, FOR_STMT, NULL_TREE, NULL_TREE, |
0dfdeca6 | 818 | NULL_TREE, NULL_TREE); |
325c3691 RH |
819 | |
820 | if (flag_new_for_scope > 0) | |
821 | TREE_CHAIN (r) = do_pushlevel (sk_for); | |
ad321293 | 822 | |
894ca2c9 RH |
823 | if (processing_template_decl) |
824 | FOR_INIT_STMT (r) = push_stmt_list (); | |
825 | ||
ad321293 MM |
826 | return r; |
827 | } | |
828 | ||
829 | /* Finish the for-init-statement of a for-statement, which may be | |
830 | given by FOR_STMT. */ | |
831 | ||
832 | void | |
3a978d72 | 833 | finish_for_init_stmt (tree for_stmt) |
ad321293 | 834 | { |
894ca2c9 RH |
835 | if (processing_template_decl) |
836 | FOR_INIT_STMT (for_stmt) = pop_stmt_list (FOR_INIT_STMT (for_stmt)); | |
325c3691 RH |
837 | add_stmt (for_stmt); |
838 | FOR_BODY (for_stmt) = do_pushlevel (sk_block); | |
caf2523d | 839 | begin_cond (&FOR_COND (for_stmt)); |
ad321293 MM |
840 | } |
841 | ||
842 | /* Finish the COND of a for-statement, which may be given by | |
843 | FOR_STMT. */ | |
844 | ||
845 | void | |
3a978d72 | 846 | finish_for_cond (tree cond, tree for_stmt) |
ad321293 | 847 | { |
caf2523d RH |
848 | finish_cond (&FOR_COND (for_stmt), maybe_convert_cond (cond)); |
849 | simplify_loop_decl_cond (&FOR_COND (for_stmt), FOR_BODY (for_stmt)); | |
ad321293 MM |
850 | } |
851 | ||
852 | /* Finish the increment-EXPRESSION in a for-statement, which may be | |
853 | given by FOR_STMT. */ | |
854 | ||
855 | void | |
3a978d72 | 856 | finish_for_expr (tree expr, tree for_stmt) |
ad321293 | 857 | { |
543a0daa RH |
858 | if (!expr) |
859 | return; | |
6f69173e MM |
860 | /* If EXPR is an overloaded function, issue an error; there is no |
861 | context available to use to perform overload resolution. */ | |
543a0daa | 862 | if (type_unknown_p (expr)) |
6f69173e MM |
863 | { |
864 | cxx_incomplete_type_error (expr, TREE_TYPE (expr)); | |
865 | expr = error_mark_node; | |
866 | } | |
bcd46a7c AP |
867 | if (!processing_template_decl) |
868 | { | |
869 | if (warn_sequence_point) | |
0cbd7506 | 870 | verify_sequence_points (expr); |
5ade1ed2 DG |
871 | expr = convert_to_void (expr, "3rd expression in for", |
872 | tf_warning_or_error); | |
bcd46a7c AP |
873 | } |
874 | else if (!type_dependent_expression_p (expr)) | |
5ade1ed2 DG |
875 | convert_to_void (build_non_dependent_expr (expr), "3rd expression in for", |
876 | tf_warning_or_error); | |
0ad28dde | 877 | expr = maybe_cleanup_point_expr_void (expr); |
7b3e2d46 | 878 | if (check_for_bare_parameter_packs (expr)) |
4439d02f | 879 | expr = error_mark_node; |
35b1567d | 880 | FOR_EXPR (for_stmt) = expr; |
ad321293 MM |
881 | } |
882 | ||
883 | /* Finish the body of a for-statement, which may be given by | |
884 | FOR_STMT. The increment-EXPR for the loop must be | |
885 | provided. */ | |
886 | ||
887 | void | |
3a978d72 | 888 | finish_for_stmt (tree for_stmt) |
ad321293 | 889 | { |
325c3691 RH |
890 | FOR_BODY (for_stmt) = do_poplevel (FOR_BODY (for_stmt)); |
891 | ||
ad321293 | 892 | /* Pop the scope for the body of the loop. */ |
325c3691 RH |
893 | if (flag_new_for_scope > 0) |
894 | { | |
895 | tree scope = TREE_CHAIN (for_stmt); | |
896 | TREE_CHAIN (for_stmt) = NULL; | |
897 | add_stmt (do_poplevel (scope)); | |
898 | } | |
899 | ||
c8094d83 | 900 | finish_stmt (); |
ad321293 MM |
901 | } |
902 | ||
903 | /* Finish a break-statement. */ | |
904 | ||
3e4d04a1 | 905 | tree |
3a978d72 | 906 | finish_break_stmt (void) |
ad321293 | 907 | { |
c2255bc4 | 908 | return add_stmt (build_stmt (input_location, BREAK_STMT)); |
35b1567d BC |
909 | } |
910 | ||
ad321293 MM |
911 | /* Finish a continue-statement. */ |
912 | ||
3e4d04a1 | 913 | tree |
3a978d72 | 914 | finish_continue_stmt (void) |
ad321293 | 915 | { |
c2255bc4 | 916 | return add_stmt (build_stmt (input_location, CONTINUE_STMT)); |
ad321293 MM |
917 | } |
918 | ||
35b1567d BC |
919 | /* Begin a switch-statement. Returns a new SWITCH_STMT if |
920 | appropriate. */ | |
921 | ||
922 | tree | |
3a978d72 | 923 | begin_switch_stmt (void) |
35b1567d | 924 | { |
325c3691 RH |
925 | tree r, scope; |
926 | ||
c2255bc4 | 927 | r = build_stmt (input_location, SWITCH_STMT, NULL_TREE, NULL_TREE, NULL_TREE); |
325c3691 RH |
928 | |
929 | scope = do_pushlevel (sk_block); | |
930 | TREE_CHAIN (r) = scope; | |
ebaae582 | 931 | begin_cond (&SWITCH_STMT_COND (r)); |
325c3691 | 932 | |
527f0080 | 933 | return r; |
ad321293 MM |
934 | } |
935 | ||
527f0080 | 936 | /* Finish the cond of a switch-statement. */ |
ad321293 | 937 | |
527f0080 | 938 | void |
3a978d72 | 939 | finish_switch_cond (tree cond, tree switch_stmt) |
ad321293 | 940 | { |
6f9fdf4d | 941 | tree orig_type = NULL; |
35b1567d | 942 | if (!processing_template_decl) |
373eb3b3 | 943 | { |
35b1567d | 944 | /* Convert the condition to an integer or enumeration type. */ |
b746c5dc | 945 | cond = build_expr_type_conversion (WANT_INT | WANT_ENUM, cond, true); |
35b1567d | 946 | if (cond == NULL_TREE) |
373eb3b3 | 947 | { |
35b1567d BC |
948 | error ("switch quantity not an integer"); |
949 | cond = error_mark_node; | |
950 | } | |
6f9fdf4d | 951 | orig_type = TREE_TYPE (cond); |
35b1567d BC |
952 | if (cond != error_mark_node) |
953 | { | |
0a72704b MM |
954 | /* [stmt.switch] |
955 | ||
956 | Integral promotions are performed. */ | |
957 | cond = perform_integral_promotions (cond); | |
543a0daa | 958 | cond = maybe_cleanup_point_expr (cond); |
373eb3b3 | 959 | } |
ad321293 | 960 | } |
7b3e2d46 | 961 | if (check_for_bare_parameter_packs (cond)) |
4439d02f | 962 | cond = error_mark_node; |
d4033c81 MLI |
963 | else if (!processing_template_decl && warn_sequence_point) |
964 | verify_sequence_points (cond); | |
965 | ||
ebaae582 SB |
966 | finish_cond (&SWITCH_STMT_COND (switch_stmt), cond); |
967 | SWITCH_STMT_TYPE (switch_stmt) = orig_type; | |
caf2523d | 968 | add_stmt (switch_stmt); |
56cb9733 | 969 | push_switch (switch_stmt); |
ebaae582 | 970 | SWITCH_STMT_BODY (switch_stmt) = push_stmt_list (); |
ad321293 MM |
971 | } |
972 | ||
973 | /* Finish the body of a switch-statement, which may be given by | |
974 | SWITCH_STMT. The COND to switch on is indicated. */ | |
975 | ||
976 | void | |
3a978d72 | 977 | finish_switch_stmt (tree switch_stmt) |
ad321293 | 978 | { |
325c3691 RH |
979 | tree scope; |
980 | ||
ebaae582 SB |
981 | SWITCH_STMT_BODY (switch_stmt) = |
982 | pop_stmt_list (SWITCH_STMT_BODY (switch_stmt)); | |
c8094d83 | 983 | pop_switch (); |
ad321293 | 984 | finish_stmt (); |
325c3691 RH |
985 | |
986 | scope = TREE_CHAIN (switch_stmt); | |
987 | TREE_CHAIN (switch_stmt) = NULL; | |
988 | add_stmt (do_poplevel (scope)); | |
ad321293 MM |
989 | } |
990 | ||
ad321293 MM |
991 | /* Begin a try-block. Returns a newly-created TRY_BLOCK if |
992 | appropriate. */ | |
993 | ||
994 | tree | |
3a978d72 | 995 | begin_try_block (void) |
ad321293 | 996 | { |
c2255bc4 | 997 | tree r = build_stmt (input_location, TRY_BLOCK, NULL_TREE, NULL_TREE); |
ae499cce | 998 | add_stmt (r); |
325c3691 | 999 | TRY_STMTS (r) = push_stmt_list (); |
35b1567d | 1000 | return r; |
ad321293 MM |
1001 | } |
1002 | ||
eaf6fb90 MM |
1003 | /* Likewise, for a function-try-block. The block returned in |
1004 | *COMPOUND_STMT is an artificial outer scope, containing the | |
1005 | function-try-block. */ | |
0dde4175 JM |
1006 | |
1007 | tree | |
eaf6fb90 | 1008 | begin_function_try_block (tree *compound_stmt) |
0dde4175 | 1009 | { |
eaf6fb90 MM |
1010 | tree r; |
1011 | /* This outer scope does not exist in the C++ standard, but we need | |
1012 | a place to put __FUNCTION__ and similar variables. */ | |
1013 | *compound_stmt = begin_compound_stmt (0); | |
1014 | r = begin_try_block (); | |
35b1567d | 1015 | FN_TRY_BLOCK_P (r) = 1; |
35b1567d | 1016 | return r; |
0dde4175 JM |
1017 | } |
1018 | ||
ad321293 MM |
1019 | /* Finish a try-block, which may be given by TRY_BLOCK. */ |
1020 | ||
1021 | void | |
3a978d72 | 1022 | finish_try_block (tree try_block) |
ad321293 | 1023 | { |
325c3691 RH |
1024 | TRY_STMTS (try_block) = pop_stmt_list (TRY_STMTS (try_block)); |
1025 | TRY_HANDLERS (try_block) = push_stmt_list (); | |
ad321293 MM |
1026 | } |
1027 | ||
efa8eda3 MM |
1028 | /* Finish the body of a cleanup try-block, which may be given by |
1029 | TRY_BLOCK. */ | |
1030 | ||
62409b39 | 1031 | void |
3a978d72 | 1032 | finish_cleanup_try_block (tree try_block) |
62409b39 | 1033 | { |
325c3691 | 1034 | TRY_STMTS (try_block) = pop_stmt_list (TRY_STMTS (try_block)); |
62409b39 MM |
1035 | } |
1036 | ||
f1dedc31 MM |
1037 | /* Finish an implicitly generated try-block, with a cleanup is given |
1038 | by CLEANUP. */ | |
1039 | ||
1040 | void | |
3a978d72 | 1041 | finish_cleanup (tree cleanup, tree try_block) |
f1dedc31 | 1042 | { |
35b1567d BC |
1043 | TRY_HANDLERS (try_block) = cleanup; |
1044 | CLEANUP_P (try_block) = 1; | |
f1dedc31 MM |
1045 | } |
1046 | ||
0dde4175 JM |
1047 | /* Likewise, for a function-try-block. */ |
1048 | ||
1049 | void | |
3a978d72 | 1050 | finish_function_try_block (tree try_block) |
0dde4175 | 1051 | { |
325c3691 RH |
1052 | finish_try_block (try_block); |
1053 | /* FIXME : something queer about CTOR_INITIALIZER somehow following | |
1054 | the try block, but moving it inside. */ | |
b35d4555 | 1055 | in_function_try_handler = 1; |
0dde4175 JM |
1056 | } |
1057 | ||
ad321293 MM |
1058 | /* Finish a handler-sequence for a try-block, which may be given by |
1059 | TRY_BLOCK. */ | |
1060 | ||
1061 | void | |
3a978d72 | 1062 | finish_handler_sequence (tree try_block) |
ad321293 | 1063 | { |
325c3691 | 1064 | TRY_HANDLERS (try_block) = pop_stmt_list (TRY_HANDLERS (try_block)); |
35b1567d | 1065 | check_handlers (TRY_HANDLERS (try_block)); |
ad321293 MM |
1066 | } |
1067 | ||
eaf6fb90 MM |
1068 | /* Finish the handler-seq for a function-try-block, given by |
1069 | TRY_BLOCK. COMPOUND_STMT is the outer block created by | |
1070 | begin_function_try_block. */ | |
0dde4175 JM |
1071 | |
1072 | void | |
eaf6fb90 | 1073 | finish_function_handler_sequence (tree try_block, tree compound_stmt) |
0dde4175 | 1074 | { |
b35d4555 | 1075 | in_function_try_handler = 0; |
325c3691 | 1076 | finish_handler_sequence (try_block); |
eaf6fb90 | 1077 | finish_compound_stmt (compound_stmt); |
35b1567d BC |
1078 | } |
1079 | ||
ad321293 MM |
1080 | /* Begin a handler. Returns a HANDLER if appropriate. */ |
1081 | ||
1082 | tree | |
3a978d72 | 1083 | begin_handler (void) |
ad321293 MM |
1084 | { |
1085 | tree r; | |
325c3691 | 1086 | |
c2255bc4 | 1087 | r = build_stmt (input_location, HANDLER, NULL_TREE, NULL_TREE); |
ae499cce | 1088 | add_stmt (r); |
325c3691 | 1089 | |
1a6025b4 JM |
1090 | /* Create a binding level for the eh_info and the exception object |
1091 | cleanup. */ | |
325c3691 RH |
1092 | HANDLER_BODY (r) = do_pushlevel (sk_catch); |
1093 | ||
ad321293 MM |
1094 | return r; |
1095 | } | |
1096 | ||
1097 | /* Finish the handler-parameters for a handler, which may be given by | |
b35d4555 MM |
1098 | HANDLER. DECL is the declaration for the catch parameter, or NULL |
1099 | if this is a `catch (...)' clause. */ | |
ad321293 | 1100 | |
1a6025b4 | 1101 | void |
3a978d72 | 1102 | finish_handler_parms (tree decl, tree handler) |
b35d4555 | 1103 | { |
1a6025b4 | 1104 | tree type = NULL_TREE; |
b35d4555 MM |
1105 | if (processing_template_decl) |
1106 | { | |
1107 | if (decl) | |
1108 | { | |
1109 | decl = pushdecl (decl); | |
1110 | decl = push_template_decl (decl); | |
325c3691 | 1111 | HANDLER_PARMS (handler) = decl; |
1a6025b4 | 1112 | type = TREE_TYPE (decl); |
b35d4555 MM |
1113 | } |
1114 | } | |
35b1567d | 1115 | else |
1a6025b4 | 1116 | type = expand_start_catch_block (decl); |
1a6025b4 | 1117 | HANDLER_TYPE (handler) = type; |
b80cfdcd | 1118 | if (!processing_template_decl && type) |
6cad4e17 | 1119 | mark_used (eh_type_info (type)); |
35b1567d BC |
1120 | } |
1121 | ||
1122 | /* Finish a handler, which may be given by HANDLER. The BLOCKs are | |
1123 | the return value from the matching call to finish_handler_parms. */ | |
1124 | ||
1125 | void | |
3a978d72 | 1126 | finish_handler (tree handler) |
35b1567d BC |
1127 | { |
1128 | if (!processing_template_decl) | |
1a6025b4 | 1129 | expand_end_catch_block (); |
325c3691 | 1130 | HANDLER_BODY (handler) = do_poplevel (HANDLER_BODY (handler)); |
35b1567d BC |
1131 | } |
1132 | ||
5882f0f3 | 1133 | /* Begin a compound statement. FLAGS contains some bits that control the |
5995ebfb | 1134 | behavior and context. If BCS_NO_SCOPE is set, the compound statement |
5882f0f3 | 1135 | does not define a scope. If BCS_FN_BODY is set, this is the outermost |
c8094d83 | 1136 | block of a function. If BCS_TRY_BLOCK is set, this is the block |
5882f0f3 RH |
1137 | created on behalf of a TRY statement. Returns a token to be passed to |
1138 | finish_compound_stmt. */ | |
ad321293 MM |
1139 | |
1140 | tree | |
325c3691 | 1141 | begin_compound_stmt (unsigned int flags) |
ad321293 | 1142 | { |
325c3691 | 1143 | tree r; |
558475f0 | 1144 | |
325c3691 RH |
1145 | if (flags & BCS_NO_SCOPE) |
1146 | { | |
1147 | r = push_stmt_list (); | |
1148 | STATEMENT_LIST_NO_SCOPE (r) = 1; | |
1149 | ||
1150 | /* Normally, we try hard to keep the BLOCK for a statement-expression. | |
1151 | But, if it's a statement-expression with a scopeless block, there's | |
1152 | nothing to keep, and we don't want to accidentally keep a block | |
c8094d83 | 1153 | *inside* the scopeless block. */ |
325c3691 RH |
1154 | keep_next_level (false); |
1155 | } | |
f1dedc31 | 1156 | else |
325c3691 RH |
1157 | r = do_pushlevel (flags & BCS_TRY_BLOCK ? sk_try : sk_block); |
1158 | ||
5882f0f3 RH |
1159 | /* When processing a template, we need to remember where the braces were, |
1160 | so that we can set up identical scopes when instantiating the template | |
1161 | later. BIND_EXPR is a handy candidate for this. | |
1162 | Note that do_poplevel won't create a BIND_EXPR itself here (and thus | |
1163 | result in nested BIND_EXPRs), since we don't build BLOCK nodes when | |
1164 | processing templates. */ | |
1165 | if (processing_template_decl) | |
325c3691 | 1166 | { |
f293ce4b | 1167 | r = build3 (BIND_EXPR, NULL, NULL, r, NULL); |
5882f0f3 RH |
1168 | BIND_EXPR_TRY_BLOCK (r) = (flags & BCS_TRY_BLOCK) != 0; |
1169 | BIND_EXPR_BODY_BLOCK (r) = (flags & BCS_FN_BODY) != 0; | |
325c3691 RH |
1170 | TREE_SIDE_EFFECTS (r) = 1; |
1171 | } | |
ad321293 MM |
1172 | |
1173 | return r; | |
1174 | } | |
1175 | ||
5882f0f3 | 1176 | /* Finish a compound-statement, which is given by STMT. */ |
ad321293 | 1177 | |
325c3691 RH |
1178 | void |
1179 | finish_compound_stmt (tree stmt) | |
ad321293 | 1180 | { |
5882f0f3 RH |
1181 | if (TREE_CODE (stmt) == BIND_EXPR) |
1182 | BIND_EXPR_BODY (stmt) = do_poplevel (BIND_EXPR_BODY (stmt)); | |
325c3691 RH |
1183 | else if (STATEMENT_LIST_NO_SCOPE (stmt)) |
1184 | stmt = pop_stmt_list (stmt); | |
7a3397c7 | 1185 | else |
5f070bc7 ZL |
1186 | { |
1187 | /* Destroy any ObjC "super" receivers that may have been | |
1188 | created. */ | |
1189 | objc_clear_super_receiver (); | |
1190 | ||
1191 | stmt = do_poplevel (stmt); | |
1192 | } | |
ad321293 | 1193 | |
325c3691 RH |
1194 | /* ??? See c_end_compound_stmt wrt statement expressions. */ |
1195 | add_stmt (stmt); | |
ad321293 | 1196 | finish_stmt (); |
ad321293 MM |
1197 | } |
1198 | ||
6de9cd9a | 1199 | /* Finish an asm-statement, whose components are a STRING, some |
1c384bf1 RH |
1200 | OUTPUT_OPERANDS, some INPUT_OPERANDS, some CLOBBERS and some |
1201 | LABELS. Also note whether the asm-statement should be | |
1202 | considered volatile. */ | |
7dc5bd62 | 1203 | |
3e4d04a1 | 1204 | tree |
6de9cd9a | 1205 | finish_asm_stmt (int volatile_p, tree string, tree output_operands, |
1c384bf1 | 1206 | tree input_operands, tree clobbers, tree labels) |
35b1567d BC |
1207 | { |
1208 | tree r; | |
abfc8a36 | 1209 | tree t; |
5544530a PB |
1210 | int ninputs = list_length (input_operands); |
1211 | int noutputs = list_length (output_operands); | |
abfc8a36 | 1212 | |
abfc8a36 | 1213 | if (!processing_template_decl) |
40b18c0a | 1214 | { |
74f0c611 RH |
1215 | const char *constraint; |
1216 | const char **oconstraints; | |
1217 | bool allows_mem, allows_reg, is_inout; | |
1218 | tree operand; | |
40b18c0a | 1219 | int i; |
40b18c0a | 1220 | |
86b8fed1 | 1221 | oconstraints = XALLOCAVEC (const char *, noutputs); |
74f0c611 RH |
1222 | |
1223 | string = resolve_asm_operand_names (string, output_operands, | |
1c384bf1 | 1224 | input_operands, labels); |
74f0c611 RH |
1225 | |
1226 | for (i = 0, t = output_operands; t; t = TREE_CHAIN (t), ++i) | |
40b18c0a | 1227 | { |
74f0c611 RH |
1228 | operand = TREE_VALUE (t); |
1229 | ||
1230 | /* ??? Really, this should not be here. Users should be using a | |
1231 | proper lvalue, dammit. But there's a long history of using | |
1232 | casts in the output operands. In cases like longlong.h, this | |
1233 | becomes a primitive form of typechecking -- if the cast can be | |
1234 | removed, then the output operand had a type of the proper width; | |
1235 | otherwise we'll get an error. Gross, but ... */ | |
1236 | STRIP_NOPS (operand); | |
1237 | ||
03a904b5 JJ |
1238 | operand = mark_lvalue_use (operand); |
1239 | ||
5ade1ed2 | 1240 | if (!lvalue_or_else (operand, lv_asm, tf_warning_or_error)) |
74f0c611 RH |
1241 | operand = error_mark_node; |
1242 | ||
3db45ab5 | 1243 | if (operand != error_mark_node |
5544530a PB |
1244 | && (TREE_READONLY (operand) |
1245 | || CP_TYPE_CONST_P (TREE_TYPE (operand)) | |
3db45ab5 MS |
1246 | /* Functions are not modifiable, even though they are |
1247 | lvalues. */ | |
1248 | || TREE_CODE (TREE_TYPE (operand)) == FUNCTION_TYPE | |
1249 | || TREE_CODE (TREE_TYPE (operand)) == METHOD_TYPE | |
1250 | /* If it's an aggregate and any field is const, then it is | |
1251 | effectively const. */ | |
1252 | || (CLASS_TYPE_P (TREE_TYPE (operand)) | |
1253 | && C_TYPE_FIELDS_READONLY (TREE_TYPE (operand))))) | |
4cd5a50a | 1254 | readonly_error (operand, REK_ASSIGNMENT_ASM); |
5544530a | 1255 | |
74f0c611 RH |
1256 | constraint = TREE_STRING_POINTER (TREE_VALUE (TREE_PURPOSE (t))); |
1257 | oconstraints[i] = constraint; | |
1258 | ||
1259 | if (parse_output_constraint (&constraint, i, ninputs, noutputs, | |
1260 | &allows_mem, &allows_reg, &is_inout)) | |
1261 | { | |
1262 | /* If the operand is going to end up in memory, | |
1263 | mark it addressable. */ | |
1264 | if (!allows_reg && !cxx_mark_addressable (operand)) | |
1265 | operand = error_mark_node; | |
1266 | } | |
1267 | else | |
1268 | operand = error_mark_node; | |
1269 | ||
1270 | TREE_VALUE (t) = operand; | |
1271 | } | |
1272 | ||
1273 | for (i = 0, t = input_operands; t; ++i, t = TREE_CHAIN (t)) | |
1274 | { | |
1275 | constraint = TREE_STRING_POINTER (TREE_VALUE (TREE_PURPOSE (t))); | |
c8094d83 | 1276 | operand = decay_conversion (TREE_VALUE (t)); |
74f0c611 | 1277 | |
40b18c0a MM |
1278 | /* If the type of the operand hasn't been determined (e.g., |
1279 | because it involves an overloaded function), then issue | |
1280 | an error message. There's no context available to | |
1281 | resolve the overloading. */ | |
74f0c611 | 1282 | if (TREE_TYPE (operand) == unknown_type_node) |
40b18c0a | 1283 | { |
c8094d83 | 1284 | error ("type of asm operand %qE could not be determined", |
0cbd7506 | 1285 | TREE_VALUE (t)); |
74f0c611 | 1286 | operand = error_mark_node; |
40b18c0a | 1287 | } |
40b18c0a | 1288 | |
74f0c611 RH |
1289 | if (parse_input_constraint (&constraint, i, ninputs, noutputs, 0, |
1290 | oconstraints, &allows_mem, &allows_reg)) | |
40b18c0a | 1291 | { |
74f0c611 RH |
1292 | /* If the operand is going to end up in memory, |
1293 | mark it addressable. */ | |
b4c33883 AP |
1294 | if (!allows_reg && allows_mem) |
1295 | { | |
1296 | /* Strip the nops as we allow this case. FIXME, this really | |
1297 | should be rejected or made deprecated. */ | |
1298 | STRIP_NOPS (operand); | |
1299 | if (!cxx_mark_addressable (operand)) | |
1300 | operand = error_mark_node; | |
1301 | } | |
40b18c0a | 1302 | } |
74f0c611 RH |
1303 | else |
1304 | operand = error_mark_node; | |
40b18c0a | 1305 | |
74f0c611 | 1306 | TREE_VALUE (t) = operand; |
40b18c0a MM |
1307 | } |
1308 | } | |
abfc8a36 | 1309 | |
c2255bc4 | 1310 | r = build_stmt (input_location, ASM_EXPR, string, |
0dfdeca6 | 1311 | output_operands, input_operands, |
1c384bf1 | 1312 | clobbers, labels); |
5544530a | 1313 | ASM_VOLATILE_P (r) = volatile_p || noutputs == 0; |
0ad28dde | 1314 | r = maybe_cleanup_point_expr_void (r); |
3e4d04a1 | 1315 | return add_stmt (r); |
ad321293 | 1316 | } |
b4c4a9ec | 1317 | |
5bca4e80 | 1318 | /* Finish a label with the indicated NAME. Returns the new label. */ |
f01b0acb | 1319 | |
a723baf1 | 1320 | tree |
3a978d72 | 1321 | finish_label_stmt (tree name) |
f01b0acb | 1322 | { |
5b030314 | 1323 | tree decl = define_label (input_location, name); |
417fa55b | 1324 | |
5bca4e80 | 1325 | if (decl == error_mark_node) |
417fa55b LM |
1326 | return error_mark_node; |
1327 | ||
c2255bc4 | 1328 | add_stmt (build_stmt (input_location, LABEL_EXPR, decl)); |
5bca4e80 ILT |
1329 | |
1330 | return decl; | |
f01b0acb MM |
1331 | } |
1332 | ||
acef433b MM |
1333 | /* Finish a series of declarations for local labels. G++ allows users |
1334 | to declare "local" labels, i.e., labels with scope. This extension | |
1335 | is useful when writing code involving statement-expressions. */ | |
1336 | ||
1337 | void | |
3a978d72 | 1338 | finish_label_decl (tree name) |
acef433b | 1339 | { |
a6d76a95 PC |
1340 | if (!at_function_scope_p ()) |
1341 | { | |
1342 | error ("__label__ declarations are only allowed in function scopes"); | |
1343 | return; | |
1344 | } | |
1345 | ||
1346 | add_decl_expr (declare_local_label (name)); | |
acef433b MM |
1347 | } |
1348 | ||
659e5a7a | 1349 | /* When DECL goes out of scope, make sure that CLEANUP is executed. */ |
f1dedc31 | 1350 | |
c8094d83 | 1351 | void |
3a978d72 | 1352 | finish_decl_cleanup (tree decl, tree cleanup) |
f1dedc31 | 1353 | { |
325c3691 | 1354 | push_cleanup (decl, cleanup, false); |
35b1567d BC |
1355 | } |
1356 | ||
659e5a7a | 1357 | /* If the current scope exits with an exception, run CLEANUP. */ |
24bef158 | 1358 | |
659e5a7a | 1359 | void |
3a978d72 | 1360 | finish_eh_cleanup (tree cleanup) |
24bef158 | 1361 | { |
325c3691 | 1362 | push_cleanup (NULL, cleanup, true); |
35b1567d BC |
1363 | } |
1364 | ||
2282d28d MM |
1365 | /* The MEM_INITS is a list of mem-initializers, in reverse of the |
1366 | order they were written by the user. Each node is as for | |
1367 | emit_mem_initializers. */ | |
bf3428d0 MM |
1368 | |
1369 | void | |
2282d28d | 1370 | finish_mem_initializers (tree mem_inits) |
bf3428d0 | 1371 | { |
2282d28d MM |
1372 | /* Reorder the MEM_INITS so that they are in the order they appeared |
1373 | in the source program. */ | |
1374 | mem_inits = nreverse (mem_inits); | |
bf3428d0 | 1375 | |
a0de9d20 | 1376 | if (processing_template_decl) |
5d80a306 DG |
1377 | { |
1378 | tree mem; | |
1379 | ||
1380 | for (mem = mem_inits; mem; mem = TREE_CHAIN (mem)) | |
1381 | { | |
1382 | /* If the TREE_PURPOSE is a TYPE_PACK_EXPANSION, skip the | |
1383 | check for bare parameter packs in the TREE_VALUE, because | |
1384 | any parameter packs in the TREE_VALUE have already been | |
1385 | bound as part of the TREE_PURPOSE. See | |
1386 | make_pack_expansion for more information. */ | |
4439d02f | 1387 | if (TREE_CODE (TREE_PURPOSE (mem)) != TYPE_PACK_EXPANSION |
7b3e2d46 | 1388 | && check_for_bare_parameter_packs (TREE_VALUE (mem))) |
4439d02f | 1389 | TREE_VALUE (mem) = error_mark_node; |
5d80a306 DG |
1390 | } |
1391 | ||
1392 | add_stmt (build_min_nt (CTOR_INITIALIZER, mem_inits)); | |
1393 | } | |
cdd2559c | 1394 | else |
2282d28d | 1395 | emit_mem_initializers (mem_inits); |
558475f0 MM |
1396 | } |
1397 | ||
b4c4a9ec MM |
1398 | /* Finish a parenthesized expression EXPR. */ |
1399 | ||
1400 | tree | |
3a978d72 | 1401 | finish_parenthesized_expr (tree expr) |
b4c4a9ec | 1402 | { |
6615c446 | 1403 | if (EXPR_P (expr)) |
78ef5b89 | 1404 | /* This inhibits warnings in c_common_truthvalue_conversion. */ |
31ec7d2f | 1405 | TREE_NO_WARNING (expr) = 1; |
b4c4a9ec | 1406 | |
19420d00 NS |
1407 | if (TREE_CODE (expr) == OFFSET_REF) |
1408 | /* [expr.unary.op]/3 The qualified id of a pointer-to-member must not be | |
1409 | enclosed in parentheses. */ | |
1410 | PTRMEM_OK_P (expr) = 0; | |
c8094d83 | 1411 | |
7a8380ae NS |
1412 | if (TREE_CODE (expr) == STRING_CST) |
1413 | PAREN_STRING_LITERAL_P (expr) = 1; | |
c8094d83 | 1414 | |
b4c4a9ec MM |
1415 | return expr; |
1416 | } | |
1417 | ||
a723baf1 MM |
1418 | /* Finish a reference to a non-static data member (DECL) that is not |
1419 | preceded by `.' or `->'. */ | |
1420 | ||
1421 | tree | |
a3f10e50 | 1422 | finish_non_static_data_member (tree decl, tree object, tree qualifying_scope) |
a723baf1 | 1423 | { |
50bc768d | 1424 | gcc_assert (TREE_CODE (decl) == FIELD_DECL); |
a723baf1 | 1425 | |
2defb926 | 1426 | if (!object) |
51fc2d02 | 1427 | { |
51fc2d02 JM |
1428 | tree scope = qualifying_scope; |
1429 | if (scope == NULL_TREE) | |
1430 | scope = context_for_name_lookup (decl); | |
1431 | object = maybe_dummy_object (scope, NULL); | |
1432 | } | |
1433 | ||
2defb926 JM |
1434 | /* DR 613: Can use non-static data members without an associated |
1435 | object in sizeof/decltype/alignof. */ | |
1436 | if (is_dummy_object (object) && cp_unevaluated_operand == 0 | |
1437 | && (!processing_template_decl || !current_class_ref)) | |
a723baf1 | 1438 | { |
c8094d83 | 1439 | if (current_function_decl |
a723baf1 | 1440 | && DECL_STATIC_FUNCTION_P (current_function_decl)) |
dee15844 | 1441 | error ("invalid use of member %q+D in static member function", decl); |
a723baf1 | 1442 | else |
dee15844 | 1443 | error ("invalid use of non-static data member %q+D", decl); |
a723baf1 MM |
1444 | error ("from this location"); |
1445 | ||
1446 | return error_mark_node; | |
1447 | } | |
d5f4eddd | 1448 | |
51fc2d02 JM |
1449 | if (current_class_ptr) |
1450 | TREE_USED (current_class_ptr) = 1; | |
58e1d54c | 1451 | if (processing_template_decl && !qualifying_scope) |
a723baf1 | 1452 | { |
a3f10e50 | 1453 | tree type = TREE_TYPE (decl); |
a723baf1 | 1454 | |
a3f10e50 NS |
1455 | if (TREE_CODE (type) == REFERENCE_TYPE) |
1456 | type = TREE_TYPE (type); | |
1457 | else | |
1458 | { | |
f4f206f4 | 1459 | /* Set the cv qualifiers. */ |
51fc2d02 JM |
1460 | int quals = (current_class_ref |
1461 | ? cp_type_quals (TREE_TYPE (current_class_ref)) | |
1462 | : TYPE_UNQUALIFIED); | |
c8094d83 | 1463 | |
a3f10e50 NS |
1464 | if (DECL_MUTABLE_P (decl)) |
1465 | quals &= ~TYPE_QUAL_CONST; | |
9e95d15f | 1466 | |
a3f10e50 NS |
1467 | quals |= cp_type_quals (TREE_TYPE (decl)); |
1468 | type = cp_build_qualified_type (type, quals); | |
1469 | } | |
c8094d83 | 1470 | |
44de5aeb | 1471 | return build_min (COMPONENT_REF, type, object, decl, NULL_TREE); |
a3f10e50 | 1472 | } |
ab11c13f JM |
1473 | /* If PROCESSING_TEMPLATE_DECL is nonzero here, then |
1474 | QUALIFYING_SCOPE is also non-null. Wrap this in a SCOPE_REF | |
1475 | for now. */ | |
1476 | else if (processing_template_decl) | |
1477 | return build_qualified_name (TREE_TYPE (decl), | |
1478 | qualifying_scope, | |
1479 | DECL_NAME (decl), | |
1480 | /*template_p=*/false); | |
a3f10e50 NS |
1481 | else |
1482 | { | |
1483 | tree access_type = TREE_TYPE (object); | |
9f01ded6 | 1484 | |
02022f3a SM |
1485 | perform_or_defer_access_check (TYPE_BINFO (access_type), decl, |
1486 | decl); | |
a723baf1 MM |
1487 | |
1488 | /* If the data member was named `C::M', convert `*this' to `C' | |
1489 | first. */ | |
1490 | if (qualifying_scope) | |
1491 | { | |
1492 | tree binfo = NULL_TREE; | |
1493 | object = build_scoped_ref (object, qualifying_scope, | |
1494 | &binfo); | |
1495 | } | |
1496 | ||
1497 | return build_class_member_access_expr (object, decl, | |
1498 | /*access_path=*/NULL_TREE, | |
5ade1ed2 DG |
1499 | /*preserve_reference=*/false, |
1500 | tf_warning_or_error); | |
a723baf1 MM |
1501 | } |
1502 | } | |
1503 | ||
aa373032 DS |
1504 | /* If we are currently parsing a template and we encountered a typedef |
1505 | TYPEDEF_DECL that is being accessed though CONTEXT, this function | |
1506 | adds the typedef to a list tied to the current template. | |
1507 | At tempate instantiatin time, that list is walked and access check | |
1508 | performed for each typedef. | |
1509 | LOCATION is the location of the usage point of TYPEDEF_DECL. */ | |
1510 | ||
1511 | void | |
1512 | add_typedef_to_current_template_for_access_check (tree typedef_decl, | |
1513 | tree context, | |
1514 | location_t location) | |
1515 | { | |
1516 | tree template_info = NULL; | |
1517 | tree cs = current_scope (); | |
1518 | ||
1519 | if (!is_typedef_decl (typedef_decl) | |
1520 | || !context | |
1521 | || !CLASS_TYPE_P (context) | |
1522 | || !cs) | |
1523 | return; | |
1524 | ||
1525 | if (CLASS_TYPE_P (cs) || TREE_CODE (cs) == FUNCTION_DECL) | |
1526 | template_info = get_template_info (cs); | |
1527 | ||
1528 | if (template_info | |
1529 | && TI_TEMPLATE (template_info) | |
1530 | && !currently_open_class (context)) | |
1531 | append_type_to_template_for_access_check (cs, typedef_decl, | |
1532 | context, location); | |
1533 | } | |
1534 | ||
ee76b931 MM |
1535 | /* DECL was the declaration to which a qualified-id resolved. Issue |
1536 | an error message if it is not accessible. If OBJECT_TYPE is | |
1537 | non-NULL, we have just seen `x->' or `x.' and OBJECT_TYPE is the | |
1538 | type of `*x', or `x', respectively. If the DECL was named as | |
1539 | `A::B' then NESTED_NAME_SPECIFIER is `A'. */ | |
1540 | ||
1541 | void | |
c8094d83 MS |
1542 | check_accessibility_of_qualified_id (tree decl, |
1543 | tree object_type, | |
ee76b931 MM |
1544 | tree nested_name_specifier) |
1545 | { | |
1546 | tree scope; | |
1547 | tree qualifying_type = NULL_TREE; | |
95b4aca6 | 1548 | |
d0940d56 DS |
1549 | /* If we are parsing a template declaration and if decl is a typedef, |
1550 | add it to a list tied to the template. | |
1551 | At template instantiation time, that list will be walked and | |
1552 | access check performed. */ | |
aa373032 DS |
1553 | add_typedef_to_current_template_for_access_check (decl, |
1554 | nested_name_specifier | |
1555 | ? nested_name_specifier | |
1556 | : DECL_CONTEXT (decl), | |
1557 | input_location); | |
d0940d56 | 1558 | |
77880ae4 | 1559 | /* If we're not checking, return immediately. */ |
95b4aca6 NS |
1560 | if (deferred_access_no_check) |
1561 | return; | |
c8094d83 | 1562 | |
ee76b931 MM |
1563 | /* Determine the SCOPE of DECL. */ |
1564 | scope = context_for_name_lookup (decl); | |
1565 | /* If the SCOPE is not a type, then DECL is not a member. */ | |
1566 | if (!TYPE_P (scope)) | |
1567 | return; | |
1568 | /* Compute the scope through which DECL is being accessed. */ | |
c8094d83 | 1569 | if (object_type |
ee76b931 MM |
1570 | /* OBJECT_TYPE might not be a class type; consider: |
1571 | ||
1572 | class A { typedef int I; }; | |
1573 | I *p; | |
1574 | p->A::I::~I(); | |
1575 | ||
0cbd7506 | 1576 | In this case, we will have "A::I" as the DECL, but "I" as the |
ee76b931 MM |
1577 | OBJECT_TYPE. */ |
1578 | && CLASS_TYPE_P (object_type) | |
1579 | && DERIVED_FROM_P (scope, object_type)) | |
1580 | /* If we are processing a `->' or `.' expression, use the type of the | |
1581 | left-hand side. */ | |
1582 | qualifying_type = object_type; | |
1583 | else if (nested_name_specifier) | |
1584 | { | |
1585 | /* If the reference is to a non-static member of the | |
1586 | current class, treat it as if it were referenced through | |
1587 | `this'. */ | |
1588 | if (DECL_NONSTATIC_MEMBER_P (decl) | |
1589 | && current_class_ptr | |
1590 | && DERIVED_FROM_P (scope, current_class_type)) | |
1591 | qualifying_type = current_class_type; | |
1592 | /* Otherwise, use the type indicated by the | |
1593 | nested-name-specifier. */ | |
1594 | else | |
1595 | qualifying_type = nested_name_specifier; | |
1596 | } | |
1597 | else | |
1598 | /* Otherwise, the name must be from the current class or one of | |
1599 | its bases. */ | |
1600 | qualifying_type = currently_open_derived_class (scope); | |
1601 | ||
fc429748 MM |
1602 | if (qualifying_type |
1603 | /* It is possible for qualifying type to be a TEMPLATE_TYPE_PARM | |
1604 | or similar in a default argument value. */ | |
1605 | && CLASS_TYPE_P (qualifying_type) | |
1606 | && !dependent_type_p (qualifying_type)) | |
02022f3a SM |
1607 | perform_or_defer_access_check (TYPE_BINFO (qualifying_type), decl, |
1608 | decl); | |
ee76b931 MM |
1609 | } |
1610 | ||
1611 | /* EXPR is the result of a qualified-id. The QUALIFYING_CLASS was the | |
1612 | class named to the left of the "::" operator. DONE is true if this | |
1613 | expression is a complete postfix-expression; it is false if this | |
1614 | expression is followed by '->', '[', '(', etc. ADDRESS_P is true | |
02ed62dd MM |
1615 | iff this expression is the operand of '&'. TEMPLATE_P is true iff |
1616 | the qualified-id was of the form "A::template B". TEMPLATE_ARG_P | |
1617 | is true iff this qualified name appears as a template argument. */ | |
ee76b931 MM |
1618 | |
1619 | tree | |
3db45ab5 MS |
1620 | finish_qualified_id_expr (tree qualifying_class, |
1621 | tree expr, | |
02ed62dd | 1622 | bool done, |
3db45ab5 | 1623 | bool address_p, |
02ed62dd MM |
1624 | bool template_p, |
1625 | bool template_arg_p) | |
ee76b931 | 1626 | { |
d4f0f205 MM |
1627 | gcc_assert (TYPE_P (qualifying_class)); |
1628 | ||
5e08432e MM |
1629 | if (error_operand_p (expr)) |
1630 | return error_mark_node; | |
1631 | ||
7eab6e7b | 1632 | if (DECL_P (expr) || BASELINK_P (expr)) |
d4f0f205 | 1633 | mark_used (expr); |
d4f0f205 | 1634 | |
02ed62dd MM |
1635 | if (template_p) |
1636 | check_template_keyword (expr); | |
1637 | ||
ee76b931 MM |
1638 | /* If EXPR occurs as the operand of '&', use special handling that |
1639 | permits a pointer-to-member. */ | |
1640 | if (address_p && done) | |
1641 | { | |
1642 | if (TREE_CODE (expr) == SCOPE_REF) | |
1643 | expr = TREE_OPERAND (expr, 1); | |
c8094d83 | 1644 | expr = build_offset_ref (qualifying_class, expr, |
a5ac359a | 1645 | /*address_p=*/true); |
ee76b931 MM |
1646 | return expr; |
1647 | } | |
1648 | ||
02ed62dd MM |
1649 | /* Within the scope of a class, turn references to non-static |
1650 | members into expression of the form "this->...". */ | |
1651 | if (template_arg_p) | |
1652 | /* But, within a template argument, we do not want make the | |
1653 | transformation, as there is no "this" pointer. */ | |
1654 | ; | |
1655 | else if (TREE_CODE (expr) == FIELD_DECL) | |
43854f72 SB |
1656 | { |
1657 | push_deferring_access_checks (dk_no_check); | |
2defb926 | 1658 | expr = finish_non_static_data_member (expr, NULL_TREE, |
43854f72 SB |
1659 | qualifying_class); |
1660 | pop_deferring_access_checks (); | |
1661 | } | |
ee76b931 MM |
1662 | else if (BASELINK_P (expr) && !processing_template_decl) |
1663 | { | |
38f1276b | 1664 | tree ob; |
ee76b931 MM |
1665 | |
1666 | /* See if any of the functions are non-static members. */ | |
7e361ae6 | 1667 | /* If so, the expression may be relative to 'this'. */ |
294e855f | 1668 | if (!shared_member_p (expr) |
38f1276b JM |
1669 | && (ob = maybe_dummy_object (qualifying_class, NULL), |
1670 | !is_dummy_object (ob))) | |
c8094d83 | 1671 | expr = (build_class_member_access_expr |
38f1276b | 1672 | (ob, |
ee76b931 MM |
1673 | expr, |
1674 | BASELINK_ACCESS_BINFO (expr), | |
5ade1ed2 DG |
1675 | /*preserve_reference=*/false, |
1676 | tf_warning_or_error)); | |
ee76b931 | 1677 | else if (done) |
a5ac359a MM |
1678 | /* The expression is a qualified name whose address is not |
1679 | being taken. */ | |
1680 | expr = build_offset_ref (qualifying_class, expr, /*address_p=*/false); | |
ee76b931 MM |
1681 | } |
1682 | ||
1683 | return expr; | |
1684 | } | |
1685 | ||
b69b1501 MM |
1686 | /* Begin a statement-expression. The value returned must be passed to |
1687 | finish_stmt_expr. */ | |
b4c4a9ec | 1688 | |
c8094d83 | 1689 | tree |
3a978d72 | 1690 | begin_stmt_expr (void) |
b4c4a9ec | 1691 | { |
325c3691 | 1692 | return push_stmt_list (); |
35b1567d BC |
1693 | } |
1694 | ||
a5bcc582 | 1695 | /* Process the final expression of a statement expression. EXPR can be |
85a56c9d MM |
1696 | NULL, if the final expression is empty. Return a STATEMENT_LIST |
1697 | containing all the statements in the statement-expression, or | |
1698 | ERROR_MARK_NODE if there was an error. */ | |
a5bcc582 NS |
1699 | |
1700 | tree | |
325c3691 | 1701 | finish_stmt_expr_expr (tree expr, tree stmt_expr) |
a5bcc582 | 1702 | { |
72e4661a | 1703 | if (error_operand_p (expr)) |
76b9a2a1 AP |
1704 | { |
1705 | /* The type of the statement-expression is the type of the last | |
1706 | expression. */ | |
1707 | TREE_TYPE (stmt_expr) = error_mark_node; | |
1708 | return error_mark_node; | |
1709 | } | |
c8094d83 | 1710 | |
85a56c9d | 1711 | /* If the last statement does not have "void" type, then the value |
3db45ab5 | 1712 | of the last statement is the value of the entire expression. */ |
a5bcc582 NS |
1713 | if (expr) |
1714 | { | |
c6c7698d JM |
1715 | tree type = TREE_TYPE (expr); |
1716 | ||
1717 | if (processing_template_decl) | |
1718 | { | |
c2255bc4 | 1719 | expr = build_stmt (input_location, EXPR_STMT, expr); |
c6c7698d JM |
1720 | expr = add_stmt (expr); |
1721 | /* Mark the last statement so that we can recognize it as such at | |
1722 | template-instantiation time. */ | |
1723 | EXPR_STMT_STMT_EXPR_RESULT (expr) = 1; | |
1724 | } | |
1725 | else if (VOID_TYPE_P (type)) | |
a5bcc582 | 1726 | { |
c6c7698d JM |
1727 | /* Just treat this like an ordinary statement. */ |
1728 | expr = finish_expr_stmt (expr); | |
1729 | } | |
1730 | else | |
1731 | { | |
1732 | /* It actually has a value we need to deal with. First, force it | |
1733 | to be an rvalue so that we won't need to build up a copy | |
1734 | constructor call later when we try to assign it to something. */ | |
1735 | expr = force_rvalue (expr); | |
85a56c9d MM |
1736 | if (error_operand_p (expr)) |
1737 | return error_mark_node; | |
c6c7698d JM |
1738 | |
1739 | /* Update for array-to-pointer decay. */ | |
2692eb7d | 1740 | type = TREE_TYPE (expr); |
c6c7698d JM |
1741 | |
1742 | /* Wrap it in a CLEANUP_POINT_EXPR and add it to the list like a | |
1743 | normal statement, but don't convert to void or actually add | |
1744 | the EXPR_STMT. */ | |
1745 | if (TREE_CODE (expr) != CLEANUP_POINT_EXPR) | |
1746 | expr = maybe_cleanup_point_expr (expr); | |
1747 | add_stmt (expr); | |
85a56c9d | 1748 | } |
c6c7698d | 1749 | |
85a56c9d MM |
1750 | /* The type of the statement-expression is the type of the last |
1751 | expression. */ | |
1752 | TREE_TYPE (stmt_expr) = type; | |
a5bcc582 | 1753 | } |
c8094d83 | 1754 | |
85a56c9d | 1755 | return stmt_expr; |
a5bcc582 NS |
1756 | } |
1757 | ||
303b7406 NS |
1758 | /* Finish a statement-expression. EXPR should be the value returned |
1759 | by the previous begin_stmt_expr. Returns an expression | |
1760 | representing the statement-expression. */ | |
b4c4a9ec | 1761 | |
c8094d83 | 1762 | tree |
325c3691 | 1763 | finish_stmt_expr (tree stmt_expr, bool has_no_scope) |
b4c4a9ec | 1764 | { |
85a56c9d MM |
1765 | tree type; |
1766 | tree result; | |
325c3691 | 1767 | |
85a56c9d | 1768 | if (error_operand_p (stmt_expr)) |
d7b5fa31 JJ |
1769 | { |
1770 | pop_stmt_list (stmt_expr); | |
1771 | return error_mark_node; | |
1772 | } | |
325c3691 | 1773 | |
85a56c9d | 1774 | gcc_assert (TREE_CODE (stmt_expr) == STATEMENT_LIST); |
325c3691 | 1775 | |
85a56c9d MM |
1776 | type = TREE_TYPE (stmt_expr); |
1777 | result = pop_stmt_list (stmt_expr); | |
c6c7698d | 1778 | TREE_TYPE (result) = type; |
6f80451c | 1779 | |
a5bcc582 | 1780 | if (processing_template_decl) |
325c3691 RH |
1781 | { |
1782 | result = build_min (STMT_EXPR, type, result); | |
1783 | TREE_SIDE_EFFECTS (result) = 1; | |
1784 | STMT_EXPR_NO_SCOPE (result) = has_no_scope; | |
1785 | } | |
c6c7698d | 1786 | else if (CLASS_TYPE_P (type)) |
a5bcc582 | 1787 | { |
c6c7698d JM |
1788 | /* Wrap the statement-expression in a TARGET_EXPR so that the |
1789 | temporary object created by the final expression is destroyed at | |
1790 | the end of the full-expression containing the | |
1791 | statement-expression. */ | |
1792 | result = force_target_expr (type, result); | |
a5bcc582 | 1793 | } |
325c3691 | 1794 | |
b4c4a9ec MM |
1795 | return result; |
1796 | } | |
1797 | ||
c2acde1e JM |
1798 | /* Returns the expression which provides the value of STMT_EXPR. */ |
1799 | ||
1800 | tree | |
1801 | stmt_expr_value_expr (tree stmt_expr) | |
1802 | { | |
1803 | tree t = STMT_EXPR_STMT (stmt_expr); | |
1804 | ||
1805 | if (TREE_CODE (t) == BIND_EXPR) | |
1806 | t = BIND_EXPR_BODY (t); | |
1807 | ||
9de0e916 | 1808 | if (TREE_CODE (t) == STATEMENT_LIST && STATEMENT_LIST_TAIL (t)) |
c2acde1e JM |
1809 | t = STATEMENT_LIST_TAIL (t)->stmt; |
1810 | ||
1811 | if (TREE_CODE (t) == EXPR_STMT) | |
1812 | t = EXPR_STMT_EXPR (t); | |
1813 | ||
1814 | return t; | |
1815 | } | |
1816 | ||
9af66ed1 DS |
1817 | /* Return TRUE iff EXPR_STMT is an empty list of |
1818 | expression statements. */ | |
1819 | ||
1820 | bool | |
1821 | empty_expr_stmt_p (tree expr_stmt) | |
1822 | { | |
1823 | tree body = NULL_TREE; | |
1824 | ||
489df541 DS |
1825 | if (expr_stmt == void_zero_node) |
1826 | return true; | |
1827 | ||
9af66ed1 DS |
1828 | if (expr_stmt) |
1829 | { | |
1830 | if (TREE_CODE (expr_stmt) == EXPR_STMT) | |
1831 | body = EXPR_STMT_EXPR (expr_stmt); | |
1832 | else if (TREE_CODE (expr_stmt) == STATEMENT_LIST) | |
1833 | body = expr_stmt; | |
1834 | } | |
1835 | ||
489df541 DS |
1836 | if (body) |
1837 | { | |
1838 | if (TREE_CODE (body) == STATEMENT_LIST) | |
1839 | return tsi_end_p (tsi_start (body)); | |
1840 | else | |
1841 | return empty_expr_stmt_p (body); | |
1842 | } | |
9af66ed1 DS |
1843 | return false; |
1844 | } | |
1845 | ||
b3445994 | 1846 | /* Perform Koenig lookup. FN is the postfix-expression representing |
fa531100 MM |
1847 | the function (or functions) to call; ARGS are the arguments to the |
1848 | call. Returns the functions to be considered by overload | |
1849 | resolution. */ | |
b3445994 MM |
1850 | |
1851 | tree | |
c166b898 | 1852 | perform_koenig_lookup (tree fn, VEC(tree,gc) *args) |
b3445994 MM |
1853 | { |
1854 | tree identifier = NULL_TREE; | |
1855 | tree functions = NULL_TREE; | |
d095e03c | 1856 | tree tmpl_args = NULL_TREE; |
4e6a9725 | 1857 | bool template_id = false; |
d095e03c JM |
1858 | |
1859 | if (TREE_CODE (fn) == TEMPLATE_ID_EXPR) | |
1860 | { | |
4e6a9725 JM |
1861 | /* Use a separate flag to handle null args. */ |
1862 | template_id = true; | |
d095e03c JM |
1863 | tmpl_args = TREE_OPERAND (fn, 1); |
1864 | fn = TREE_OPERAND (fn, 0); | |
1865 | } | |
b3445994 MM |
1866 | |
1867 | /* Find the name of the overloaded function. */ | |
1868 | if (TREE_CODE (fn) == IDENTIFIER_NODE) | |
1869 | identifier = fn; | |
1870 | else if (is_overloaded_fn (fn)) | |
1871 | { | |
1872 | functions = fn; | |
1873 | identifier = DECL_NAME (get_first_fn (functions)); | |
1874 | } | |
1875 | else if (DECL_P (fn)) | |
1876 | { | |
1877 | functions = fn; | |
1878 | identifier = DECL_NAME (fn); | |
1879 | } | |
1880 | ||
1881 | /* A call to a namespace-scope function using an unqualified name. | |
1882 | ||
1883 | Do Koenig lookup -- unless any of the arguments are | |
1884 | type-dependent. */ | |
d095e03c JM |
1885 | if (!any_type_dependent_arguments_p (args) |
1886 | && !any_dependent_template_arguments_p (tmpl_args)) | |
b3445994 MM |
1887 | { |
1888 | fn = lookup_arg_dependent (identifier, functions, args); | |
1889 | if (!fn) | |
1890 | /* The unqualified name could not be resolved. */ | |
1891 | fn = unqualified_fn_lookup_error (identifier); | |
1892 | } | |
b3445994 | 1893 | |
4e6a9725 JM |
1894 | if (fn && template_id) |
1895 | fn = build2 (TEMPLATE_ID_EXPR, unknown_type_node, fn, tmpl_args); | |
d095e03c | 1896 | |
b3445994 MM |
1897 | return fn; |
1898 | } | |
1899 | ||
c166b898 ILT |
1900 | /* Generate an expression for `FN (ARGS)'. This may change the |
1901 | contents of ARGS. | |
4ba126e4 MM |
1902 | |
1903 | If DISALLOW_VIRTUAL is true, the call to FN will be not generated | |
1904 | as a virtual call, even if FN is virtual. (This flag is set when | |
1905 | encountering an expression where the function name is explicitly | |
1906 | qualified. For example a call to `X::f' never generates a virtual | |
1907 | call.) | |
1908 | ||
1909 | Returns code for the call. */ | |
b4c4a9ec | 1910 | |
c8094d83 | 1911 | tree |
c166b898 ILT |
1912 | finish_call_expr (tree fn, VEC(tree,gc) **args, bool disallow_virtual, |
1913 | bool koenig_p, tsubst_flags_t complain) | |
b4c4a9ec | 1914 | { |
d17811fd MM |
1915 | tree result; |
1916 | tree orig_fn; | |
c166b898 | 1917 | VEC(tree,gc) *orig_args = NULL; |
d17811fd | 1918 | |
c166b898 | 1919 | if (fn == error_mark_node) |
4ba126e4 MM |
1920 | return error_mark_node; |
1921 | ||
4860b874 | 1922 | gcc_assert (!TYPE_P (fn)); |
a759e627 | 1923 | |
d17811fd | 1924 | orig_fn = fn; |
d17811fd MM |
1925 | |
1926 | if (processing_template_decl) | |
1927 | { | |
1928 | if (type_dependent_expression_p (fn) | |
c166b898 | 1929 | || any_type_dependent_arguments_p (*args)) |
6d80c4b9 | 1930 | { |
c166b898 | 1931 | result = build_nt_call_vec (fn, *args); |
5094a795 | 1932 | KOENIG_LOOKUP_P (result) = koenig_p; |
be461b8f JJ |
1933 | if (cfun) |
1934 | { | |
1935 | do | |
1936 | { | |
1937 | tree fndecl = OVL_CURRENT (fn); | |
1938 | if (TREE_CODE (fndecl) != FUNCTION_DECL | |
1939 | || !TREE_THIS_VOLATILE (fndecl)) | |
1940 | break; | |
1941 | fn = OVL_NEXT (fn); | |
1942 | } | |
1943 | while (fn); | |
1944 | if (!fn) | |
1945 | current_function_returns_abnormally = 1; | |
1946 | } | |
6d80c4b9 MM |
1947 | return result; |
1948 | } | |
c166b898 | 1949 | orig_args = make_tree_vector_copy (*args); |
d17811fd MM |
1950 | if (!BASELINK_P (fn) |
1951 | && TREE_CODE (fn) != PSEUDO_DTOR_EXPR | |
1952 | && TREE_TYPE (fn) != unknown_type_node) | |
1953 | fn = build_non_dependent_expr (fn); | |
c166b898 | 1954 | make_args_non_dependent (*args); |
d17811fd MM |
1955 | } |
1956 | ||
eff3a276 MM |
1957 | if (is_overloaded_fn (fn)) |
1958 | fn = baselink_for_fns (fn); | |
a723baf1 | 1959 | |
d17811fd | 1960 | result = NULL_TREE; |
4ba126e4 | 1961 | if (BASELINK_P (fn)) |
03d82991 | 1962 | { |
4ba126e4 MM |
1963 | tree object; |
1964 | ||
1965 | /* A call to a member function. From [over.call.func]: | |
1966 | ||
1967 | If the keyword this is in scope and refers to the class of | |
1968 | that member function, or a derived class thereof, then the | |
1969 | function call is transformed into a qualified function call | |
1970 | using (*this) as the postfix-expression to the left of the | |
1971 | . operator.... [Otherwise] a contrived object of type T | |
c8094d83 | 1972 | becomes the implied object argument. |
4ba126e4 | 1973 | |
38f1276b | 1974 | In this situation: |
4ba126e4 MM |
1975 | |
1976 | struct A { void f(); }; | |
1977 | struct B : public A {}; | |
1978 | struct C : public A { void g() { B::f(); }}; | |
1979 | ||
38f1276b JM |
1980 | "the class of that member function" refers to `A'. But 11.2 |
1981 | [class.access.base] says that we need to convert 'this' to B* as | |
1982 | part of the access, so we pass 'B' to maybe_dummy_object. */ | |
b4c4a9ec | 1983 | |
38f1276b JM |
1984 | object = maybe_dummy_object (BINFO_TYPE (BASELINK_ACCESS_BINFO (fn)), |
1985 | NULL); | |
b4c4a9ec | 1986 | |
d17811fd MM |
1987 | if (processing_template_decl) |
1988 | { | |
1989 | if (type_dependent_expression_p (object)) | |
c166b898 ILT |
1990 | { |
1991 | tree ret = build_nt_call_vec (orig_fn, orig_args); | |
1992 | release_tree_vector (orig_args); | |
1993 | return ret; | |
1994 | } | |
d17811fd MM |
1995 | object = build_non_dependent_expr (object); |
1996 | } | |
1997 | ||
1998 | result = build_new_method_call (object, fn, args, NULL_TREE, | |
c8094d83 | 1999 | (disallow_virtual |
63c9a190 | 2000 | ? LOOKUP_NONVIRTUAL : 0), |
5ade1ed2 DG |
2001 | /*fn_p=*/NULL, |
2002 | complain); | |
4ba126e4 MM |
2003 | } |
2004 | else if (is_overloaded_fn (fn)) | |
16c35a1f RH |
2005 | { |
2006 | /* If the function is an overloaded builtin, resolve it. */ | |
2007 | if (TREE_CODE (fn) == FUNCTION_DECL | |
58646b77 PB |
2008 | && (DECL_BUILT_IN_CLASS (fn) == BUILT_IN_NORMAL |
2009 | || DECL_BUILT_IN_CLASS (fn) == BUILT_IN_MD)) | |
c2255bc4 | 2010 | result = resolve_overloaded_builtin (input_location, fn, *args); |
16c35a1f RH |
2011 | |
2012 | if (!result) | |
2013 | /* A call to a namespace-scope function. */ | |
5094a795 | 2014 | result = build_new_function_call (fn, args, koenig_p, complain); |
16c35a1f | 2015 | } |
a723baf1 MM |
2016 | else if (TREE_CODE (fn) == PSEUDO_DTOR_EXPR) |
2017 | { | |
c166b898 | 2018 | if (!VEC_empty (tree, *args)) |
a723baf1 MM |
2019 | error ("arguments to destructor are not allowed"); |
2020 | /* Mark the pseudo-destructor call as having side-effects so | |
2021 | that we do not issue warnings about its use. */ | |
2022 | result = build1 (NOP_EXPR, | |
2023 | void_type_node, | |
2024 | TREE_OPERAND (fn, 0)); | |
2025 | TREE_SIDE_EFFECTS (result) = 1; | |
a723baf1 | 2026 | } |
4ba126e4 | 2027 | else if (CLASS_TYPE_P (TREE_TYPE (fn))) |
d17811fd MM |
2028 | /* If the "function" is really an object of class type, it might |
2029 | have an overloaded `operator ()'. */ | |
c166b898 | 2030 | result = build_op_call (fn, args, complain); |
16c35a1f | 2031 | |
d17811fd MM |
2032 | if (!result) |
2033 | /* A call where the function is unknown. */ | |
c166b898 | 2034 | result = cp_build_function_call_vec (fn, args, complain); |
4ba126e4 | 2035 | |
d17811fd | 2036 | if (processing_template_decl) |
6d80c4b9 | 2037 | { |
c166b898 | 2038 | result = build_call_vec (TREE_TYPE (result), orig_fn, orig_args); |
5094a795 | 2039 | KOENIG_LOOKUP_P (result) = koenig_p; |
c166b898 | 2040 | release_tree_vector (orig_args); |
6d80c4b9 | 2041 | } |
c166b898 | 2042 | |
d17811fd | 2043 | return result; |
b4c4a9ec MM |
2044 | } |
2045 | ||
2046 | /* Finish a call to a postfix increment or decrement or EXPR. (Which | |
2047 | is indicated by CODE, which should be POSTINCREMENT_EXPR or | |
2048 | POSTDECREMENT_EXPR.) */ | |
2049 | ||
c8094d83 | 2050 | tree |
3a978d72 | 2051 | finish_increment_expr (tree expr, enum tree_code code) |
b4c4a9ec | 2052 | { |
5ade1ed2 | 2053 | return build_x_unary_op (code, expr, tf_warning_or_error); |
b4c4a9ec MM |
2054 | } |
2055 | ||
2056 | /* Finish a use of `this'. Returns an expression for `this'. */ | |
2057 | ||
c8094d83 | 2058 | tree |
3a978d72 | 2059 | finish_this_expr (void) |
b4c4a9ec MM |
2060 | { |
2061 | tree result; | |
2062 | ||
c6be04ad JM |
2063 | if (current_class_ptr) |
2064 | { | |
2065 | tree type = TREE_TYPE (current_class_ref); | |
2066 | ||
2067 | /* In a lambda expression, 'this' refers to the captured 'this'. */ | |
2068 | if (LAMBDA_TYPE_P (type)) | |
2069 | result = lambda_expr_this_capture (CLASSTYPE_LAMBDA_EXPR (type)); | |
2070 | else | |
2071 | result = current_class_ptr; | |
2072 | ||
2073 | } | |
b4c4a9ec MM |
2074 | else if (current_function_decl |
2075 | && DECL_STATIC_FUNCTION_P (current_function_decl)) | |
2076 | { | |
9e637a26 | 2077 | error ("%<this%> is unavailable for static member functions"); |
b4c4a9ec MM |
2078 | result = error_mark_node; |
2079 | } | |
2080 | else | |
2081 | { | |
2082 | if (current_function_decl) | |
9e637a26 | 2083 | error ("invalid use of %<this%> in non-member function"); |
b4c4a9ec | 2084 | else |
9e637a26 | 2085 | error ("invalid use of %<this%> at top level"); |
b4c4a9ec MM |
2086 | result = error_mark_node; |
2087 | } | |
2088 | ||
2089 | return result; | |
2090 | } | |
2091 | ||
a723baf1 MM |
2092 | /* Finish a pseudo-destructor expression. If SCOPE is NULL, the |
2093 | expression was of the form `OBJECT.~DESTRUCTOR' where DESTRUCTOR is | |
2094 | the TYPE for the type given. If SCOPE is non-NULL, the expression | |
2095 | was of the form `OBJECT.SCOPE::~DESTRUCTOR'. */ | |
b4c4a9ec | 2096 | |
c8094d83 | 2097 | tree |
3a978d72 | 2098 | finish_pseudo_destructor_expr (tree object, tree scope, tree destructor) |
b4c4a9ec | 2099 | { |
09b1ccd6 | 2100 | if (object == error_mark_node || destructor == error_mark_node) |
a723baf1 | 2101 | return error_mark_node; |
40242ccf | 2102 | |
50bc768d | 2103 | gcc_assert (TYPE_P (destructor)); |
b4c4a9ec | 2104 | |
a723baf1 MM |
2105 | if (!processing_template_decl) |
2106 | { | |
2107 | if (scope == error_mark_node) | |
2108 | { | |
2109 | error ("invalid qualifying scope in pseudo-destructor name"); | |
2110 | return error_mark_node; | |
2111 | } | |
5cf10afb AP |
2112 | if (scope && TYPE_P (scope) && !check_dtor_name (scope, destructor)) |
2113 | { | |
2114 | error ("qualified type %qT does not match destructor name ~%qT", | |
2115 | scope, destructor); | |
2116 | return error_mark_node; | |
2117 | } | |
2118 | ||
c8094d83 | 2119 | |
26bcf8fc MM |
2120 | /* [expr.pseudo] says both: |
2121 | ||
0cbd7506 | 2122 | The type designated by the pseudo-destructor-name shall be |
26bcf8fc MM |
2123 | the same as the object type. |
2124 | ||
0cbd7506 | 2125 | and: |
26bcf8fc | 2126 | |
0cbd7506 | 2127 | The cv-unqualified versions of the object type and of the |
26bcf8fc MM |
2128 | type designated by the pseudo-destructor-name shall be the |
2129 | same type. | |
2130 | ||
0cbd7506 MS |
2131 | We implement the more generous second sentence, since that is |
2132 | what most other compilers do. */ | |
c8094d83 | 2133 | if (!same_type_ignoring_top_level_qualifiers_p (TREE_TYPE (object), |
26bcf8fc | 2134 | destructor)) |
a723baf1 | 2135 | { |
a82e1a7d | 2136 | error ("%qE is not of type %qT", object, destructor); |
a723baf1 MM |
2137 | return error_mark_node; |
2138 | } | |
2139 | } | |
b4c4a9ec | 2140 | |
f293ce4b | 2141 | return build3 (PSEUDO_DTOR_EXPR, void_type_node, object, scope, destructor); |
b4c4a9ec MM |
2142 | } |
2143 | ||
ce4a0391 MM |
2144 | /* Finish an expression of the form CODE EXPR. */ |
2145 | ||
2146 | tree | |
3a978d72 | 2147 | finish_unary_op_expr (enum tree_code code, tree expr) |
ce4a0391 | 2148 | { |
5ade1ed2 | 2149 | tree result = build_x_unary_op (code, expr, tf_warning_or_error); |
7c355bca ML |
2150 | /* Inside a template, build_x_unary_op does not fold the |
2151 | expression. So check whether the result is folded before | |
2152 | setting TREE_NEGATED_INT. */ | |
2153 | if (code == NEGATE_EXPR && TREE_CODE (expr) == INTEGER_CST | |
88b4335f | 2154 | && TREE_CODE (result) == INTEGER_CST |
8df83eae | 2155 | && !TYPE_UNSIGNED (TREE_TYPE (result)) |
88b4335f | 2156 | && INT_CST_LT (result, integer_zero_node)) |
6fc98adf MM |
2157 | { |
2158 | /* RESULT may be a cached INTEGER_CST, so we must copy it before | |
2159 | setting TREE_NEGATED_INT. */ | |
2160 | result = copy_node (result); | |
2161 | TREE_NEGATED_INT (result) = 1; | |
2162 | } | |
59c0753d | 2163 | if (TREE_OVERFLOW_P (result) && !TREE_OVERFLOW_P (expr)) |
c2255bc4 | 2164 | overflow_warning (input_location, result); |
59c0753d | 2165 | |
ce4a0391 MM |
2166 | return result; |
2167 | } | |
2168 | ||
a723baf1 | 2169 | /* Finish a compound-literal expression. TYPE is the type to which |
09357846 | 2170 | the CONSTRUCTOR in COMPOUND_LITERAL is being cast. */ |
a723baf1 MM |
2171 | |
2172 | tree | |
09357846 | 2173 | finish_compound_literal (tree type, tree compound_literal) |
a723baf1 | 2174 | { |
326a4d4e JJ |
2175 | if (type == error_mark_node) |
2176 | return error_mark_node; | |
2177 | ||
2b643eda MM |
2178 | if (!TYPE_OBJ_P (type)) |
2179 | { | |
2180 | error ("compound literal of non-object type %qT", type); | |
2181 | return error_mark_node; | |
2182 | } | |
2183 | ||
a723baf1 | 2184 | if (processing_template_decl) |
a723baf1 | 2185 | { |
e92fb501 MM |
2186 | TREE_TYPE (compound_literal) = type; |
2187 | /* Mark the expression as a compound literal. */ | |
2188 | TREE_HAS_CONSTRUCTOR (compound_literal) = 1; | |
2189 | return compound_literal; | |
a723baf1 MM |
2190 | } |
2191 | ||
df794884 | 2192 | type = complete_type (type); |
09357846 JM |
2193 | |
2194 | if (TYPE_NON_AGGREGATE_CLASS (type)) | |
2195 | { | |
2196 | /* Trying to deal with a CONSTRUCTOR instead of a TREE_LIST | |
2197 | everywhere that deals with function arguments would be a pain, so | |
2198 | just wrap it in a TREE_LIST. The parser set a flag so we know | |
2199 | that it came from T{} rather than T({}). */ | |
2200 | CONSTRUCTOR_IS_DIRECT_INIT (compound_literal) = 1; | |
2201 | compound_literal = build_tree_list (NULL_TREE, compound_literal); | |
2202 | return build_functional_cast (type, compound_literal, tf_error); | |
2203 | } | |
2204 | ||
23bee8f4 JJ |
2205 | if (TREE_CODE (type) == ARRAY_TYPE |
2206 | && check_array_initializer (NULL_TREE, type, compound_literal)) | |
2207 | return error_mark_node; | |
df794884 JM |
2208 | compound_literal = reshape_init (type, compound_literal); |
2209 | if (TREE_CODE (type) == ARRAY_TYPE) | |
2210 | cp_complete_array_type (&type, compound_literal, false); | |
2211 | compound_literal = digest_init (type, compound_literal); | |
a3360e77 | 2212 | if ((!at_function_scope_p () || CP_TYPE_CONST_P (type)) |
09357846 JM |
2213 | && initializer_constant_valid_p (compound_literal, type)) |
2214 | { | |
2215 | tree decl = create_temporary_var (type); | |
2216 | DECL_INITIAL (decl) = compound_literal; | |
2217 | TREE_STATIC (decl) = 1; | |
1acb8caa | 2218 | cp_apply_type_quals_to_decl (cp_type_quals (type), decl); |
09357846 JM |
2219 | decl = pushdecl_top_level (decl); |
2220 | DECL_NAME (decl) = make_anon_name (); | |
2221 | SET_DECL_ASSEMBLER_NAME (decl, DECL_NAME (decl)); | |
2222 | return decl; | |
2223 | } | |
2224 | else | |
2225 | return get_target_expr (compound_literal); | |
a723baf1 MM |
2226 | } |
2227 | ||
5f261ba9 MM |
2228 | /* Return the declaration for the function-name variable indicated by |
2229 | ID. */ | |
2230 | ||
2231 | tree | |
2232 | finish_fname (tree id) | |
2233 | { | |
2234 | tree decl; | |
c8094d83 | 2235 | |
3ba09659 | 2236 | decl = fname_decl (input_location, C_RID_CODE (id), id); |
5f261ba9 | 2237 | if (processing_template_decl) |
10b1d5e7 | 2238 | decl = DECL_NAME (decl); |
5f261ba9 MM |
2239 | return decl; |
2240 | } | |
2241 | ||
8014a339 | 2242 | /* Finish a translation unit. */ |
ce4a0391 | 2243 | |
c8094d83 | 2244 | void |
3a978d72 | 2245 | finish_translation_unit (void) |
ce4a0391 MM |
2246 | { |
2247 | /* In case there were missing closebraces, | |
2248 | get us back to the global binding level. */ | |
273a708f | 2249 | pop_everything (); |
ce4a0391 MM |
2250 | while (current_namespace != global_namespace) |
2251 | pop_namespace (); | |
0ba8a114 | 2252 | |
c6002625 | 2253 | /* Do file scope __FUNCTION__ et al. */ |
0ba8a114 | 2254 | finish_fname_decls (); |
ce4a0391 MM |
2255 | } |
2256 | ||
b4c4a9ec MM |
2257 | /* Finish a template type parameter, specified as AGGR IDENTIFIER. |
2258 | Returns the parameter. */ | |
2259 | ||
c8094d83 | 2260 | tree |
3a978d72 | 2261 | finish_template_type_parm (tree aggr, tree identifier) |
b4c4a9ec | 2262 | { |
6eabb241 | 2263 | if (aggr != class_type_node) |
b4c4a9ec | 2264 | { |
cbe5f3b3 | 2265 | permerror (input_location, "template type parameters must use the keyword %<class%> or %<typename%>"); |
b4c4a9ec MM |
2266 | aggr = class_type_node; |
2267 | } | |
2268 | ||
2269 | return build_tree_list (aggr, identifier); | |
2270 | } | |
2271 | ||
2272 | /* Finish a template template parameter, specified as AGGR IDENTIFIER. | |
2273 | Returns the parameter. */ | |
2274 | ||
c8094d83 | 2275 | tree |
3a978d72 | 2276 | finish_template_template_parm (tree aggr, tree identifier) |
b4c4a9ec | 2277 | { |
c2255bc4 AH |
2278 | tree decl = build_decl (input_location, |
2279 | TYPE_DECL, identifier, NULL_TREE); | |
b4c4a9ec MM |
2280 | tree tmpl = build_lang_decl (TEMPLATE_DECL, identifier, NULL_TREE); |
2281 | DECL_TEMPLATE_PARMS (tmpl) = current_template_parms; | |
2282 | DECL_TEMPLATE_RESULT (tmpl) = decl; | |
c727aa5e | 2283 | DECL_ARTIFICIAL (decl) = 1; |
b4c4a9ec MM |
2284 | end_template_decl (); |
2285 | ||
50bc768d | 2286 | gcc_assert (DECL_TEMPLATE_PARMS (tmpl)); |
b37bf5bd | 2287 | |
85d85234 DG |
2288 | check_default_tmpl_args (decl, DECL_TEMPLATE_PARMS (tmpl), |
2289 | /*is_primary=*/true, /*is_partial=*/false, | |
2290 | /*is_friend=*/0); | |
2291 | ||
b4c4a9ec MM |
2292 | return finish_template_type_parm (aggr, tmpl); |
2293 | } | |
ce4a0391 | 2294 | |
8ba658ee MM |
2295 | /* ARGUMENT is the default-argument value for a template template |
2296 | parameter. If ARGUMENT is invalid, issue error messages and return | |
2297 | the ERROR_MARK_NODE. Otherwise, ARGUMENT itself is returned. */ | |
2298 | ||
2299 | tree | |
2300 | check_template_template_default_arg (tree argument) | |
2301 | { | |
2302 | if (TREE_CODE (argument) != TEMPLATE_DECL | |
2303 | && TREE_CODE (argument) != TEMPLATE_TEMPLATE_PARM | |
8ba658ee MM |
2304 | && TREE_CODE (argument) != UNBOUND_CLASS_TEMPLATE) |
2305 | { | |
a3a503a5 | 2306 | if (TREE_CODE (argument) == TYPE_DECL) |
e488a090 VR |
2307 | error ("invalid use of type %qT as a default value for a template " |
2308 | "template-parameter", TREE_TYPE (argument)); | |
a3a503a5 GB |
2309 | else |
2310 | error ("invalid default argument for a template template parameter"); | |
8ba658ee MM |
2311 | return error_mark_node; |
2312 | } | |
2313 | ||
2314 | return argument; | |
2315 | } | |
2316 | ||
ce4a0391 MM |
2317 | /* Begin a class definition, as indicated by T. */ |
2318 | ||
2319 | tree | |
b9e75696 | 2320 | begin_class_definition (tree t, tree attributes) |
ce4a0391 | 2321 | { |
7d2f0ecd | 2322 | if (error_operand_p (t) || error_operand_p (TYPE_MAIN_DECL (t))) |
7437519c ZW |
2323 | return error_mark_node; |
2324 | ||
522d6614 NS |
2325 | if (processing_template_parmlist) |
2326 | { | |
a82e1a7d | 2327 | error ("definition of %q#T inside template parameter list", t); |
522d6614 NS |
2328 | return error_mark_node; |
2329 | } | |
ebf0bf7f JJ |
2330 | |
2331 | /* According to the C++ ABI, decimal classes defined in ISO/IEC TR 24733 | |
2332 | are passed the same as decimal scalar types. */ | |
cd924144 JM |
2333 | if (TREE_CODE (t) == RECORD_TYPE |
2334 | && !processing_template_decl) | |
ebf0bf7f | 2335 | { |
cd924144 JM |
2336 | tree ns = TYPE_CONTEXT (t); |
2337 | if (ns && TREE_CODE (ns) == NAMESPACE_DECL | |
2338 | && DECL_CONTEXT (ns) == std_node | |
935c0a5d | 2339 | && DECL_NAME (ns) |
cd924144 JM |
2340 | && !strcmp (IDENTIFIER_POINTER (DECL_NAME (ns)), "decimal")) |
2341 | { | |
2342 | const char *n = TYPE_NAME_STRING (t); | |
2343 | if ((strcmp (n, "decimal32") == 0) | |
2344 | || (strcmp (n, "decimal64") == 0) | |
2345 | || (strcmp (n, "decimal128") == 0)) | |
2346 | TYPE_TRANSPARENT_AGGR (t) = 1; | |
2347 | } | |
ebf0bf7f JJ |
2348 | } |
2349 | ||
47ee8904 MM |
2350 | /* A non-implicit typename comes from code like: |
2351 | ||
2352 | template <typename T> struct A { | |
0cbd7506 | 2353 | template <typename U> struct A<T>::B ... |
47ee8904 MM |
2354 | |
2355 | This is erroneous. */ | |
2356 | else if (TREE_CODE (t) == TYPENAME_TYPE) | |
2357 | { | |
a82e1a7d | 2358 | error ("invalid definition of qualified type %qT", t); |
47ee8904 MM |
2359 | t = error_mark_node; |
2360 | } | |
2361 | ||
9e1e64ec | 2362 | if (t == error_mark_node || ! MAYBE_CLASS_TYPE_P (t)) |
ce4a0391 | 2363 | { |
9e1e64ec | 2364 | t = make_class_type (RECORD_TYPE); |
bd3d082e | 2365 | pushtag (make_anon_name (), t, /*tag_scope=*/ts_current); |
ce4a0391 | 2366 | } |
830fcda8 | 2367 | |
4c571114 | 2368 | if (TYPE_BEING_DEFINED (t)) |
ce4a0391 | 2369 | { |
9e1e64ec | 2370 | t = make_class_type (TREE_CODE (t)); |
bd3d082e | 2371 | pushtag (TYPE_IDENTIFIER (t), t, /*tag_scope=*/ts_current); |
ce4a0391 | 2372 | } |
ff350acd | 2373 | maybe_process_partial_specialization (t); |
29370796 | 2374 | pushclass (t); |
ce4a0391 | 2375 | TYPE_BEING_DEFINED (t) = 1; |
b9e75696 JM |
2376 | |
2377 | cplus_decl_attributes (&t, attributes, (int) ATTR_FLAG_TYPE_IN_PLACE); | |
2378 | ||
c0694c4b MM |
2379 | if (flag_pack_struct) |
2380 | { | |
2381 | tree v; | |
2382 | TYPE_PACKED (t) = 1; | |
2383 | /* Even though the type is being defined for the first time | |
2384 | here, there might have been a forward declaration, so there | |
2385 | might be cv-qualified variants of T. */ | |
2386 | for (v = TYPE_NEXT_VARIANT (t); v; v = TYPE_NEXT_VARIANT (v)) | |
2387 | TYPE_PACKED (v) = 1; | |
2388 | } | |
ce4a0391 MM |
2389 | /* Reset the interface data, at the earliest possible |
2390 | moment, as it might have been set via a class foo; | |
2391 | before. */ | |
1951a1b6 JM |
2392 | if (! TYPE_ANONYMOUS_P (t)) |
2393 | { | |
c533e34d | 2394 | struct c_fileinfo *finfo = get_fileinfo (input_filename); |
5d709b00 | 2395 | CLASSTYPE_INTERFACE_ONLY (t) = finfo->interface_only; |
1951a1b6 | 2396 | SET_CLASSTYPE_INTERFACE_UNKNOWN_X |
5d709b00 | 2397 | (t, finfo->interface_unknown); |
1951a1b6 | 2398 | } |
ce4a0391 | 2399 | reset_specialization(); |
c8094d83 | 2400 | |
b7975aed MM |
2401 | /* Make a declaration for this class in its own scope. */ |
2402 | build_self_reference (); | |
2403 | ||
830fcda8 | 2404 | return t; |
ce4a0391 MM |
2405 | } |
2406 | ||
61a127b3 MM |
2407 | /* Finish the member declaration given by DECL. */ |
2408 | ||
2409 | void | |
3a978d72 | 2410 | finish_member_declaration (tree decl) |
61a127b3 MM |
2411 | { |
2412 | if (decl == error_mark_node || decl == NULL_TREE) | |
2413 | return; | |
2414 | ||
2415 | if (decl == void_type_node) | |
2416 | /* The COMPONENT was a friend, not a member, and so there's | |
2417 | nothing for us to do. */ | |
2418 | return; | |
2419 | ||
2420 | /* We should see only one DECL at a time. */ | |
50bc768d | 2421 | gcc_assert (TREE_CHAIN (decl) == NULL_TREE); |
61a127b3 MM |
2422 | |
2423 | /* Set up access control for DECL. */ | |
c8094d83 | 2424 | TREE_PRIVATE (decl) |
61a127b3 | 2425 | = (current_access_specifier == access_private_node); |
c8094d83 | 2426 | TREE_PROTECTED (decl) |
61a127b3 MM |
2427 | = (current_access_specifier == access_protected_node); |
2428 | if (TREE_CODE (decl) == TEMPLATE_DECL) | |
2429 | { | |
17aec3eb RK |
2430 | TREE_PRIVATE (DECL_TEMPLATE_RESULT (decl)) = TREE_PRIVATE (decl); |
2431 | TREE_PROTECTED (DECL_TEMPLATE_RESULT (decl)) = TREE_PROTECTED (decl); | |
61a127b3 MM |
2432 | } |
2433 | ||
2434 | /* Mark the DECL as a member of the current class. */ | |
4f1c5b7d | 2435 | DECL_CONTEXT (decl) = current_class_type; |
61a127b3 | 2436 | |
b1d7b1c0 | 2437 | /* Check for bare parameter packs in the member variable declaration. */ |
1ad8aeeb | 2438 | if (TREE_CODE (decl) == FIELD_DECL) |
4439d02f | 2439 | { |
7b3e2d46 | 2440 | if (check_for_bare_parameter_packs (TREE_TYPE (decl))) |
4439d02f | 2441 | TREE_TYPE (decl) = error_mark_node; |
7b3e2d46 | 2442 | if (check_for_bare_parameter_packs (DECL_ATTRIBUTES (decl))) |
4439d02f DG |
2443 | DECL_ATTRIBUTES (decl) = NULL_TREE; |
2444 | } | |
b1d7b1c0 | 2445 | |
421844e7 MM |
2446 | /* [dcl.link] |
2447 | ||
2448 | A C language linkage is ignored for the names of class members | |
2449 | and the member function type of class member functions. */ | |
2450 | if (DECL_LANG_SPECIFIC (decl) && DECL_LANGUAGE (decl) == lang_c) | |
5d2ed28c | 2451 | SET_DECL_LANGUAGE (decl, lang_cplusplus); |
421844e7 | 2452 | |
61a127b3 MM |
2453 | /* Put functions on the TYPE_METHODS list and everything else on the |
2454 | TYPE_FIELDS list. Note that these are built up in reverse order. | |
2455 | We reverse them (to obtain declaration order) in finish_struct. */ | |
c8094d83 | 2456 | if (TREE_CODE (decl) == FUNCTION_DECL |
61a127b3 MM |
2457 | || DECL_FUNCTION_TEMPLATE_P (decl)) |
2458 | { | |
2459 | /* We also need to add this function to the | |
2460 | CLASSTYPE_METHOD_VEC. */ | |
b77fe7b4 NS |
2461 | if (add_method (current_class_type, decl, NULL_TREE)) |
2462 | { | |
2463 | TREE_CHAIN (decl) = TYPE_METHODS (current_class_type); | |
2464 | TYPE_METHODS (current_class_type) = decl; | |
f139561c | 2465 | |
b77fe7b4 NS |
2466 | maybe_add_class_template_decl_list (current_class_type, decl, |
2467 | /*friend_p=*/0); | |
2468 | } | |
61a127b3 | 2469 | } |
f139561c | 2470 | /* Enter the DECL into the scope of the class. */ |
98ed9dae | 2471 | else if ((TREE_CODE (decl) == USING_DECL && !DECL_DEPENDENT_P (decl)) |
399dedb9 | 2472 | || pushdecl_class_level (decl)) |
61a127b3 MM |
2473 | { |
2474 | /* All TYPE_DECLs go at the end of TYPE_FIELDS. Ordinary fields | |
2475 | go at the beginning. The reason is that lookup_field_1 | |
2476 | searches the list in order, and we want a field name to | |
2477 | override a type name so that the "struct stat hack" will | |
2478 | work. In particular: | |
2479 | ||
2480 | struct S { enum E { }; int E } s; | |
2481 | s.E = 3; | |
2482 | ||
0e339752 | 2483 | is valid. In addition, the FIELD_DECLs must be maintained in |
61a127b3 MM |
2484 | declaration order so that class layout works as expected. |
2485 | However, we don't need that order until class layout, so we | |
2486 | save a little time by putting FIELD_DECLs on in reverse order | |
2487 | here, and then reversing them in finish_struct_1. (We could | |
2488 | also keep a pointer to the correct insertion points in the | |
2489 | list.) */ | |
2490 | ||
2491 | if (TREE_CODE (decl) == TYPE_DECL) | |
c8094d83 | 2492 | TYPE_FIELDS (current_class_type) |
61a127b3 MM |
2493 | = chainon (TYPE_FIELDS (current_class_type), decl); |
2494 | else | |
2495 | { | |
2496 | TREE_CHAIN (decl) = TYPE_FIELDS (current_class_type); | |
2497 | TYPE_FIELDS (current_class_type) = decl; | |
2498 | } | |
8f032717 | 2499 | |
c8094d83 | 2500 | maybe_add_class_template_decl_list (current_class_type, decl, |
f139561c | 2501 | /*friend_p=*/0); |
61a127b3 | 2502 | } |
5e2f4cd2 MM |
2503 | |
2504 | if (pch_file) | |
2505 | note_decl_for_pch (decl); | |
2506 | } | |
2507 | ||
2508 | /* DECL has been declared while we are building a PCH file. Perform | |
2509 | actions that we might normally undertake lazily, but which can be | |
2510 | performed now so that they do not have to be performed in | |
2511 | translation units which include the PCH file. */ | |
2512 | ||
2513 | void | |
2514 | note_decl_for_pch (tree decl) | |
2515 | { | |
2516 | gcc_assert (pch_file); | |
2517 | ||
5e2f4cd2 MM |
2518 | /* There's a good chance that we'll have to mangle names at some |
2519 | point, even if only for emission in debugging information. */ | |
ec0897de JM |
2520 | if ((TREE_CODE (decl) == VAR_DECL |
2521 | || TREE_CODE (decl) == FUNCTION_DECL) | |
2522 | && !processing_template_decl) | |
5e2f4cd2 | 2523 | mangle_decl (decl); |
61a127b3 MM |
2524 | } |
2525 | ||
306ef644 | 2526 | /* Finish processing a complete template declaration. The PARMS are |
36a117a5 MM |
2527 | the template parameters. */ |
2528 | ||
2529 | void | |
3a978d72 | 2530 | finish_template_decl (tree parms) |
36a117a5 MM |
2531 | { |
2532 | if (parms) | |
2533 | end_template_decl (); | |
2534 | else | |
2535 | end_specialization (); | |
2536 | } | |
2537 | ||
509fc277 | 2538 | /* Finish processing a template-id (which names a type) of the form |
36a117a5 | 2539 | NAME < ARGS >. Return the TYPE_DECL for the type named by the |
838dfd8a | 2540 | template-id. If ENTERING_SCOPE is nonzero we are about to enter |
36a117a5 MM |
2541 | the scope of template-id indicated. */ |
2542 | ||
2543 | tree | |
3a978d72 | 2544 | finish_template_type (tree name, tree args, int entering_scope) |
36a117a5 MM |
2545 | { |
2546 | tree decl; | |
2547 | ||
2548 | decl = lookup_template_class (name, args, | |
42eaed49 | 2549 | NULL_TREE, NULL_TREE, entering_scope, |
23fca1f5 | 2550 | tf_warning_or_error | tf_user); |
36a117a5 MM |
2551 | if (decl != error_mark_node) |
2552 | decl = TYPE_STUB_DECL (decl); | |
2553 | ||
2554 | return decl; | |
2555 | } | |
648f19f6 | 2556 | |
ea6021e8 MM |
2557 | /* Finish processing a BASE_CLASS with the indicated ACCESS_SPECIFIER. |
2558 | Return a TREE_LIST containing the ACCESS_SPECIFIER and the | |
2559 | BASE_CLASS, or NULL_TREE if an error occurred. The | |
aba649ba | 2560 | ACCESS_SPECIFIER is one of |
809e3e7f NS |
2561 | access_{default,public,protected_private}_node. For a virtual base |
2562 | we set TREE_TYPE. */ | |
ea6021e8 | 2563 | |
c8094d83 | 2564 | tree |
dbbf88d1 | 2565 | finish_base_specifier (tree base, tree access, bool virtual_p) |
ea6021e8 | 2566 | { |
ea6021e8 MM |
2567 | tree result; |
2568 | ||
dbbf88d1 | 2569 | if (base == error_mark_node) |
acb044ee GDR |
2570 | { |
2571 | error ("invalid base-class specification"); | |
2572 | result = NULL_TREE; | |
2573 | } | |
9e1e64ec PC |
2574 | else if (! MAYBE_CLASS_TYPE_P (base)) |
2575 | { | |
2576 | error ("%qT is not a class type", base); | |
2577 | result = NULL_TREE; | |
2578 | } | |
ea6021e8 | 2579 | else |
bb92901d | 2580 | { |
dbbf88d1 | 2581 | if (cp_type_quals (base) != 0) |
0cbd7506 MS |
2582 | { |
2583 | error ("base class %qT has cv qualifiers", base); | |
2584 | base = TYPE_MAIN_VARIANT (base); | |
2585 | } | |
dbbf88d1 | 2586 | result = build_tree_list (access, base); |
809e3e7f NS |
2587 | if (virtual_p) |
2588 | TREE_TYPE (result) = integer_type_node; | |
bb92901d | 2589 | } |
ea6021e8 MM |
2590 | |
2591 | return result; | |
2592 | } | |
61a127b3 | 2593 | |
8f78f01f | 2594 | /* Issue a diagnostic that NAME cannot be found in SCOPE. DECL is |
2b7a3abf DS |
2595 | what we found when we tried to do the lookup. |
2596 | LOCATION is the location of the NAME identifier; | |
2597 | The location is used in the error message*/ | |
22038b2c NS |
2598 | |
2599 | void | |
2b7a3abf DS |
2600 | qualified_name_lookup_error (tree scope, tree name, |
2601 | tree decl, location_t location) | |
22038b2c | 2602 | { |
1e1b4b37 VR |
2603 | if (scope == error_mark_node) |
2604 | ; /* We already complained. */ | |
2605 | else if (TYPE_P (scope)) | |
22038b2c NS |
2606 | { |
2607 | if (!COMPLETE_TYPE_P (scope)) | |
69bc6bff MLI |
2608 | error_at (location, "incomplete type %qT used in nested name specifier", |
2609 | scope); | |
8f78f01f MM |
2610 | else if (TREE_CODE (decl) == TREE_LIST) |
2611 | { | |
69bc6bff MLI |
2612 | error_at (location, "reference to %<%T::%D%> is ambiguous", |
2613 | scope, name); | |
8f78f01f MM |
2614 | print_candidates (decl); |
2615 | } | |
22038b2c | 2616 | else |
69bc6bff | 2617 | error_at (location, "%qD is not a member of %qT", name, scope); |
22038b2c NS |
2618 | } |
2619 | else if (scope != global_namespace) | |
69bc6bff | 2620 | error_at (location, "%qD is not a member of %qD", name, scope); |
22038b2c | 2621 | else |
69bc6bff | 2622 | error_at (location, "%<::%D%> has not been declared", name); |
22038b2c | 2623 | } |
c8094d83 | 2624 | |
eff3a276 MM |
2625 | /* If FNS is a member function, a set of member functions, or a |
2626 | template-id referring to one or more member functions, return a | |
2627 | BASELINK for FNS, incorporating the current access context. | |
2628 | Otherwise, return FNS unchanged. */ | |
2629 | ||
2630 | tree | |
2631 | baselink_for_fns (tree fns) | |
2632 | { | |
2633 | tree fn; | |
2634 | tree cl; | |
2635 | ||
2636 | if (BASELINK_P (fns) | |
eff3a276 MM |
2637 | || error_operand_p (fns)) |
2638 | return fns; | |
2639 | ||
2640 | fn = fns; | |
2641 | if (TREE_CODE (fn) == TEMPLATE_ID_EXPR) | |
2642 | fn = TREE_OPERAND (fn, 0); | |
2643 | fn = get_first_fn (fn); | |
2644 | if (!DECL_FUNCTION_MEMBER_P (fn)) | |
2645 | return fns; | |
2646 | ||
2647 | cl = currently_open_derived_class (DECL_CONTEXT (fn)); | |
2648 | if (!cl) | |
2649 | cl = DECL_CONTEXT (fn); | |
2650 | cl = TYPE_BINFO (cl); | |
5a40306b | 2651 | return build_baselink (cl, cl, fns, /*optype=*/NULL_TREE); |
eff3a276 MM |
2652 | } |
2653 | ||
d5f4eddd JM |
2654 | /* Returns true iff DECL is an automatic variable from a function outside |
2655 | the current one. */ | |
2656 | ||
2657 | static bool | |
2658 | outer_automatic_var_p (tree decl) | |
2659 | { | |
2660 | return ((TREE_CODE (decl) == VAR_DECL || TREE_CODE (decl) == PARM_DECL) | |
2661 | && DECL_FUNCTION_SCOPE_P (decl) | |
2662 | && !TREE_STATIC (decl) | |
2663 | && DECL_CONTEXT (decl) != current_function_decl); | |
2664 | } | |
2665 | ||
9660afe0 JM |
2666 | /* Returns true iff DECL is a capture field from a lambda that is not our |
2667 | immediate context. */ | |
2668 | ||
2669 | static bool | |
2670 | outer_lambda_capture_p (tree decl) | |
2671 | { | |
2672 | return (TREE_CODE (decl) == FIELD_DECL | |
2673 | && LAMBDA_TYPE_P (DECL_CONTEXT (decl)) | |
19030d77 JM |
2674 | && (!current_class_type |
2675 | || !DERIVED_FROM_P (DECL_CONTEXT (decl), current_class_type))); | |
9660afe0 JM |
2676 | } |
2677 | ||
b3445994 MM |
2678 | /* ID_EXPRESSION is a representation of parsed, but unprocessed, |
2679 | id-expression. (See cp_parser_id_expression for details.) SCOPE, | |
2680 | if non-NULL, is the type or namespace used to explicitly qualify | |
2681 | ID_EXPRESSION. DECL is the entity to which that name has been | |
c8094d83 | 2682 | resolved. |
b3445994 MM |
2683 | |
2684 | *CONSTANT_EXPRESSION_P is true if we are presently parsing a | |
2685 | constant-expression. In that case, *NON_CONSTANT_EXPRESSION_P will | |
2686 | be set to true if this expression isn't permitted in a | |
2687 | constant-expression, but it is otherwise not set by this function. | |
2688 | *ALLOW_NON_CONSTANT_EXPRESSION_P is true if we are parsing a | |
2689 | constant-expression, but a non-constant expression is also | |
2690 | permissible. | |
2691 | ||
02ed62dd MM |
2692 | DONE is true if this expression is a complete postfix-expression; |
2693 | it is false if this expression is followed by '->', '[', '(', etc. | |
2694 | ADDRESS_P is true iff this expression is the operand of '&'. | |
2695 | TEMPLATE_P is true iff the qualified-id was of the form | |
2696 | "A::template B". TEMPLATE_ARG_P is true iff this qualified name | |
2697 | appears as a template argument. | |
2698 | ||
b3445994 MM |
2699 | If an error occurs, and it is the kind of error that might cause |
2700 | the parser to abort a tentative parse, *ERROR_MSG is filled in. It | |
2701 | is the caller's responsibility to issue the message. *ERROR_MSG | |
2702 | will be a string with static storage duration, so the caller need | |
2703 | not "free" it. | |
2704 | ||
2705 | Return an expression for the entity, after issuing appropriate | |
2706 | diagnostics. This function is also responsible for transforming a | |
2707 | reference to a non-static member into a COMPONENT_REF that makes | |
c8094d83 | 2708 | the use of "this" explicit. |
b3445994 MM |
2709 | |
2710 | Upon return, *IDK will be filled in appropriately. */ | |
b3445994 | 2711 | tree |
c8094d83 | 2712 | finish_id_expression (tree id_expression, |
b3445994 MM |
2713 | tree decl, |
2714 | tree scope, | |
2715 | cp_id_kind *idk, | |
67c03833 JM |
2716 | bool integral_constant_expression_p, |
2717 | bool allow_non_integral_constant_expression_p, | |
2718 | bool *non_integral_constant_expression_p, | |
02ed62dd MM |
2719 | bool template_p, |
2720 | bool done, | |
2721 | bool address_p, | |
2722 | bool template_arg_p, | |
2b7a3abf DS |
2723 | const char **error_msg, |
2724 | location_t location) | |
b3445994 MM |
2725 | { |
2726 | /* Initialize the output parameters. */ | |
2727 | *idk = CP_ID_KIND_NONE; | |
2728 | *error_msg = NULL; | |
2729 | ||
2730 | if (id_expression == error_mark_node) | |
2731 | return error_mark_node; | |
2732 | /* If we have a template-id, then no further lookup is | |
2733 | required. If the template-id was for a template-class, we | |
2734 | will sometimes have a TYPE_DECL at this point. */ | |
2735 | else if (TREE_CODE (decl) == TEMPLATE_ID_EXPR | |
ee935db4 | 2736 | || TREE_CODE (decl) == TYPE_DECL) |
b3445994 MM |
2737 | ; |
2738 | /* Look up the name. */ | |
c8094d83 | 2739 | else |
b3445994 MM |
2740 | { |
2741 | if (decl == error_mark_node) | |
2742 | { | |
2743 | /* Name lookup failed. */ | |
c8094d83 MS |
2744 | if (scope |
2745 | && (!TYPE_P (scope) | |
4546865e MM |
2746 | || (!dependent_type_p (scope) |
2747 | && !(TREE_CODE (id_expression) == IDENTIFIER_NODE | |
2748 | && IDENTIFIER_TYPENAME_P (id_expression) | |
2749 | && dependent_type_p (TREE_TYPE (id_expression)))))) | |
b3445994 | 2750 | { |
4546865e MM |
2751 | /* If the qualifying type is non-dependent (and the name |
2752 | does not name a conversion operator to a dependent | |
2753 | type), issue an error. */ | |
2b7a3abf | 2754 | qualified_name_lookup_error (scope, id_expression, decl, location); |
b3445994 MM |
2755 | return error_mark_node; |
2756 | } | |
2757 | else if (!scope) | |
2758 | { | |
2759 | /* It may be resolved via Koenig lookup. */ | |
2760 | *idk = CP_ID_KIND_UNQUALIFIED; | |
2761 | return id_expression; | |
2762 | } | |
4546865e MM |
2763 | else |
2764 | decl = id_expression; | |
b3445994 MM |
2765 | } |
2766 | /* If DECL is a variable that would be out of scope under | |
2767 | ANSI/ISO rules, but in scope in the ARM, name lookup | |
2768 | will succeed. Issue a diagnostic here. */ | |
2769 | else | |
2770 | decl = check_for_out_of_scope_variable (decl); | |
2771 | ||
2772 | /* Remember that the name was used in the definition of | |
2773 | the current class so that we can check later to see if | |
2774 | the meaning would have been different after the class | |
2775 | was entirely defined. */ | |
2776 | if (!scope && decl != error_mark_node) | |
2777 | maybe_note_name_used_in_class (id_expression, decl); | |
8ca4bf25 | 2778 | |
d5f4eddd JM |
2779 | /* Disallow uses of local variables from containing functions, except |
2780 | within lambda-expressions. */ | |
9660afe0 JM |
2781 | if ((outer_automatic_var_p (decl) |
2782 | || outer_lambda_capture_p (decl)) | |
d5f4eddd JM |
2783 | /* It's not a use (3.2) if we're in an unevaluated context. */ |
2784 | && !cp_unevaluated_operand) | |
8ca4bf25 | 2785 | { |
d5f4eddd JM |
2786 | tree context = DECL_CONTEXT (decl); |
2787 | tree containing_function = current_function_decl; | |
2788 | tree lambda_stack = NULL_TREE; | |
2789 | tree lambda_expr = NULL_TREE; | |
9660afe0 | 2790 | tree initializer = decl; |
d5f4eddd JM |
2791 | |
2792 | /* Core issue 696: "[At the July 2009 meeting] the CWG expressed | |
2793 | support for an approach in which a reference to a local | |
2794 | [constant] automatic variable in a nested class or lambda body | |
2795 | would enter the expression as an rvalue, which would reduce | |
2796 | the complexity of the problem" | |
2797 | ||
2798 | FIXME update for final resolution of core issue 696. */ | |
2799 | if (DECL_INTEGRAL_CONSTANT_VAR_P (decl)) | |
2800 | return integral_constant_value (decl); | |
2801 | ||
9660afe0 JM |
2802 | if (TYPE_P (context)) |
2803 | { | |
2804 | /* Implicit capture of an explicit capture. */ | |
2805 | context = lambda_function (context); | |
2806 | initializer = thisify_lambda_field (decl); | |
2807 | } | |
2808 | ||
d5f4eddd JM |
2809 | /* If we are in a lambda function, we can move out until we hit |
2810 | 1. the context, | |
2811 | 2. a non-lambda function, or | |
2812 | 3. a non-default capturing lambda function. */ | |
2813 | while (context != containing_function | |
2814 | && LAMBDA_FUNCTION_P (containing_function)) | |
2815 | { | |
2816 | lambda_expr = CLASSTYPE_LAMBDA_EXPR | |
2817 | (DECL_CONTEXT (containing_function)); | |
2818 | ||
2819 | if (LAMBDA_EXPR_DEFAULT_CAPTURE_MODE (lambda_expr) | |
2820 | == CPLD_NONE) | |
2821 | break; | |
2822 | ||
2823 | lambda_stack = tree_cons (NULL_TREE, | |
2824 | lambda_expr, | |
2825 | lambda_stack); | |
2826 | ||
2827 | containing_function | |
2828 | = decl_function_context (containing_function); | |
2829 | } | |
2830 | ||
2831 | if (context == containing_function) | |
2832 | { | |
2833 | decl = add_default_capture (lambda_stack, | |
2834 | /*id=*/DECL_NAME (decl), | |
9660afe0 | 2835 | initializer); |
d5f4eddd JM |
2836 | } |
2837 | else if (lambda_expr) | |
2838 | { | |
2839 | error ("%qD is not captured", decl); | |
2840 | return error_mark_node; | |
2841 | } | |
2842 | else | |
8ca4bf25 MM |
2843 | { |
2844 | error (TREE_CODE (decl) == VAR_DECL | |
2845 | ? "use of %<auto%> variable from containing function" | |
2846 | : "use of parameter from containing function"); | |
2847 | error (" %q+#D declared here", decl); | |
2848 | return error_mark_node; | |
2849 | } | |
2850 | } | |
b3445994 MM |
2851 | } |
2852 | ||
2853 | /* If we didn't find anything, or what we found was a type, | |
2854 | then this wasn't really an id-expression. */ | |
2855 | if (TREE_CODE (decl) == TEMPLATE_DECL | |
2856 | && !DECL_FUNCTION_TEMPLATE_P (decl)) | |
2857 | { | |
2858 | *error_msg = "missing template arguments"; | |
2859 | return error_mark_node; | |
2860 | } | |
2861 | else if (TREE_CODE (decl) == TYPE_DECL | |
2862 | || TREE_CODE (decl) == NAMESPACE_DECL) | |
2863 | { | |
2864 | *error_msg = "expected primary-expression"; | |
2865 | return error_mark_node; | |
2866 | } | |
2867 | ||
2868 | /* If the name resolved to a template parameter, there is no | |
931a9c05 GB |
2869 | need to look it up again later. */ |
2870 | if ((TREE_CODE (decl) == CONST_DECL && DECL_TEMPLATE_PARM_P (decl)) | |
2871 | || TREE_CODE (decl) == TEMPLATE_PARM_INDEX) | |
b3445994 | 2872 | { |
db24eb1f | 2873 | tree r; |
c8094d83 | 2874 | |
b3445994 | 2875 | *idk = CP_ID_KIND_NONE; |
931a9c05 GB |
2876 | if (TREE_CODE (decl) == TEMPLATE_PARM_INDEX) |
2877 | decl = TEMPLATE_PARM_DECL (decl); | |
db24eb1f | 2878 | r = convert_from_reference (DECL_INITIAL (decl)); |
c8094d83 MS |
2879 | |
2880 | if (integral_constant_expression_p | |
68deab91 | 2881 | && !dependent_type_p (TREE_TYPE (decl)) |
db24eb1f | 2882 | && !(INTEGRAL_OR_ENUMERATION_TYPE_P (TREE_TYPE (r)))) |
931a9c05 | 2883 | { |
67c03833 | 2884 | if (!allow_non_integral_constant_expression_p) |
a82e1a7d | 2885 | error ("template parameter %qD of type %qT is not allowed in " |
931a9c05 GB |
2886 | "an integral constant expression because it is not of " |
2887 | "integral or enumeration type", decl, TREE_TYPE (decl)); | |
67c03833 | 2888 | *non_integral_constant_expression_p = true; |
931a9c05 | 2889 | } |
db24eb1f | 2890 | return r; |
931a9c05 | 2891 | } |
c8094d83 | 2892 | /* Similarly, we resolve enumeration constants to their |
931a9c05 GB |
2893 | underlying values. */ |
2894 | else if (TREE_CODE (decl) == CONST_DECL) | |
2895 | { | |
2896 | *idk = CP_ID_KIND_NONE; | |
2897 | if (!processing_template_decl) | |
6193b8b7 DJ |
2898 | { |
2899 | used_types_insert (TREE_TYPE (decl)); | |
2900 | return DECL_INITIAL (decl); | |
2901 | } | |
b3445994 MM |
2902 | return decl; |
2903 | } | |
2904 | else | |
2905 | { | |
2906 | bool dependent_p; | |
2907 | ||
2908 | /* If the declaration was explicitly qualified indicate | |
2909 | that. The semantics of `A::f(3)' are different than | |
2910 | `f(3)' if `f' is virtual. */ | |
c8094d83 | 2911 | *idk = (scope |
b3445994 MM |
2912 | ? CP_ID_KIND_QUALIFIED |
2913 | : (TREE_CODE (decl) == TEMPLATE_ID_EXPR | |
2914 | ? CP_ID_KIND_TEMPLATE_ID | |
2915 | : CP_ID_KIND_UNQUALIFIED)); | |
2916 | ||
2917 | ||
2918 | /* [temp.dep.expr] | |
2919 | ||
2920 | An id-expression is type-dependent if it contains an | |
2921 | identifier that was declared with a dependent type. | |
2922 | ||
b3445994 MM |
2923 | The standard is not very specific about an id-expression that |
2924 | names a set of overloaded functions. What if some of them | |
2925 | have dependent types and some of them do not? Presumably, | |
2926 | such a name should be treated as a dependent name. */ | |
2927 | /* Assume the name is not dependent. */ | |
2928 | dependent_p = false; | |
2929 | if (!processing_template_decl) | |
2930 | /* No names are dependent outside a template. */ | |
2931 | ; | |
2932 | /* A template-id where the name of the template was not resolved | |
2933 | is definitely dependent. */ | |
2934 | else if (TREE_CODE (decl) == TEMPLATE_ID_EXPR | |
c8094d83 | 2935 | && (TREE_CODE (TREE_OPERAND (decl, 0)) |
b3445994 MM |
2936 | == IDENTIFIER_NODE)) |
2937 | dependent_p = true; | |
2938 | /* For anything except an overloaded function, just check its | |
2939 | type. */ | |
2940 | else if (!is_overloaded_fn (decl)) | |
c8094d83 | 2941 | dependent_p |
b3445994 MM |
2942 | = dependent_type_p (TREE_TYPE (decl)); |
2943 | /* For a set of overloaded functions, check each of the | |
2944 | functions. */ | |
2945 | else | |
2946 | { | |
2947 | tree fns = decl; | |
2948 | ||
2949 | if (BASELINK_P (fns)) | |
2950 | fns = BASELINK_FUNCTIONS (fns); | |
2951 | ||
2952 | /* For a template-id, check to see if the template | |
2953 | arguments are dependent. */ | |
2954 | if (TREE_CODE (fns) == TEMPLATE_ID_EXPR) | |
2955 | { | |
2956 | tree args = TREE_OPERAND (fns, 1); | |
2957 | dependent_p = any_dependent_template_arguments_p (args); | |
2958 | /* The functions are those referred to by the | |
2959 | template-id. */ | |
2960 | fns = TREE_OPERAND (fns, 0); | |
2961 | } | |
2962 | ||
2963 | /* If there are no dependent template arguments, go through | |
cd0be382 | 2964 | the overloaded functions. */ |
b3445994 MM |
2965 | while (fns && !dependent_p) |
2966 | { | |
2967 | tree fn = OVL_CURRENT (fns); | |
2968 | ||
2969 | /* Member functions of dependent classes are | |
2970 | dependent. */ | |
2971 | if (TREE_CODE (fn) == FUNCTION_DECL | |
2972 | && type_dependent_expression_p (fn)) | |
2973 | dependent_p = true; | |
2974 | else if (TREE_CODE (fn) == TEMPLATE_DECL | |
2975 | && dependent_template_p (fn)) | |
2976 | dependent_p = true; | |
2977 | ||
2978 | fns = OVL_NEXT (fns); | |
2979 | } | |
2980 | } | |
2981 | ||
2982 | /* If the name was dependent on a template parameter, we will | |
2983 | resolve the name at instantiation time. */ | |
2984 | if (dependent_p) | |
2985 | { | |
2986 | /* Create a SCOPE_REF for qualified names, if the scope is | |
2987 | dependent. */ | |
2988 | if (scope) | |
2989 | { | |
02ed62dd MM |
2990 | if (TYPE_P (scope)) |
2991 | { | |
2992 | if (address_p && done) | |
2993 | decl = finish_qualified_id_expr (scope, decl, | |
2994 | done, address_p, | |
2995 | template_p, | |
2996 | template_arg_p); | |
7e361ae6 JM |
2997 | else |
2998 | { | |
2999 | tree type = NULL_TREE; | |
3000 | if (DECL_P (decl) && !dependent_scope_p (scope)) | |
3001 | type = TREE_TYPE (decl); | |
3002 | decl = build_qualified_name (type, | |
3003 | scope, | |
3004 | id_expression, | |
3005 | template_p); | |
3006 | } | |
02ed62dd MM |
3007 | } |
3008 | if (TREE_TYPE (decl)) | |
3009 | decl = convert_from_reference (decl); | |
3010 | return decl; | |
b3445994 MM |
3011 | } |
3012 | /* A TEMPLATE_ID already contains all the information we | |
3013 | need. */ | |
3014 | if (TREE_CODE (id_expression) == TEMPLATE_ID_EXPR) | |
3015 | return id_expression; | |
10b1d5e7 | 3016 | *idk = CP_ID_KIND_UNQUALIFIED_DEPENDENT; |
5a98fa7b MM |
3017 | /* If we found a variable, then name lookup during the |
3018 | instantiation will always resolve to the same VAR_DECL | |
3019 | (or an instantiation thereof). */ | |
3c398f34 MM |
3020 | if (TREE_CODE (decl) == VAR_DECL |
3021 | || TREE_CODE (decl) == PARM_DECL) | |
db24eb1f | 3022 | return convert_from_reference (decl); |
bad1f462 KL |
3023 | /* The same is true for FIELD_DECL, but we also need to |
3024 | make sure that the syntax is correct. */ | |
3025 | else if (TREE_CODE (decl) == FIELD_DECL) | |
a26ddf11 KL |
3026 | { |
3027 | /* Since SCOPE is NULL here, this is an unqualified name. | |
3028 | Access checking has been performed during name lookup | |
3029 | already. Turn off checking to avoid duplicate errors. */ | |
3030 | push_deferring_access_checks (dk_no_check); | |
3031 | decl = finish_non_static_data_member | |
2defb926 | 3032 | (decl, NULL_TREE, |
a26ddf11 KL |
3033 | /*qualifying_scope=*/NULL_TREE); |
3034 | pop_deferring_access_checks (); | |
3035 | return decl; | |
3036 | } | |
10b1d5e7 | 3037 | return id_expression; |
b3445994 MM |
3038 | } |
3039 | ||
3040 | /* Only certain kinds of names are allowed in constant | |
0cbd7506 MS |
3041 | expression. Enumerators and template parameters have already |
3042 | been handled above. */ | |
c30b4add | 3043 | if (integral_constant_expression_p |
100d337a MA |
3044 | && ! DECL_INTEGRAL_CONSTANT_VAR_P (decl) |
3045 | && ! builtin_valid_in_constant_expr_p (decl)) | |
b3445994 | 3046 | { |
c30b4add | 3047 | if (!allow_non_integral_constant_expression_p) |
b3445994 | 3048 | { |
a82e1a7d | 3049 | error ("%qD cannot appear in a constant-expression", decl); |
c30b4add | 3050 | return error_mark_node; |
b3445994 | 3051 | } |
c30b4add | 3052 | *non_integral_constant_expression_p = true; |
b3445994 | 3053 | } |
c8094d83 | 3054 | |
415d4636 | 3055 | if (TREE_CODE (decl) == NAMESPACE_DECL) |
9e95d15f | 3056 | { |
a82e1a7d | 3057 | error ("use of namespace %qD as expression", decl); |
9e95d15f NS |
3058 | return error_mark_node; |
3059 | } | |
3060 | else if (DECL_CLASS_TEMPLATE_P (decl)) | |
3061 | { | |
a82e1a7d | 3062 | error ("use of class template %qT as expression", decl); |
9e95d15f NS |
3063 | return error_mark_node; |
3064 | } | |
3065 | else if (TREE_CODE (decl) == TREE_LIST) | |
3066 | { | |
3067 | /* Ambiguous reference to base members. */ | |
a82e1a7d | 3068 | error ("request for member %qD is ambiguous in " |
9e95d15f NS |
3069 | "multiple inheritance lattice", id_expression); |
3070 | print_candidates (decl); | |
3071 | return error_mark_node; | |
3072 | } | |
415d4636 MM |
3073 | |
3074 | /* Mark variable-like entities as used. Functions are similarly | |
3075 | marked either below or after overload resolution. */ | |
3076 | if (TREE_CODE (decl) == VAR_DECL | |
3077 | || TREE_CODE (decl) == PARM_DECL | |
3078 | || TREE_CODE (decl) == RESULT_DECL) | |
3079 | mark_used (decl); | |
3080 | ||
3081 | if (scope) | |
3082 | { | |
c8094d83 | 3083 | decl = (adjust_result_of_qualified_name_lookup |
415d4636 | 3084 | (decl, scope, current_class_type)); |
e20bcc5e JH |
3085 | |
3086 | if (TREE_CODE (decl) == FUNCTION_DECL) | |
3087 | mark_used (decl); | |
3088 | ||
415d4636 | 3089 | if (TREE_CODE (decl) == FIELD_DECL || BASELINK_P (decl)) |
02ed62dd MM |
3090 | decl = finish_qualified_id_expr (scope, |
3091 | decl, | |
3092 | done, | |
3093 | address_p, | |
3094 | template_p, | |
3095 | template_arg_p); | |
db24eb1f NS |
3096 | else |
3097 | { | |
3098 | tree r = convert_from_reference (decl); | |
c8094d83 | 3099 | |
d3a79fcc JM |
3100 | /* In a template, return a SCOPE_REF for most qualified-ids |
3101 | so that we can check access at instantiation time. But if | |
3102 | we're looking at a member of the current instantiation, we | |
3103 | know we have access and building up the SCOPE_REF confuses | |
3104 | non-type template argument handling. */ | |
3105 | if (processing_template_decl && TYPE_P (scope) | |
3106 | && !currently_open_class (scope)) | |
02ed62dd MM |
3107 | r = build_qualified_name (TREE_TYPE (r), |
3108 | scope, decl, | |
3109 | template_p); | |
db24eb1f NS |
3110 | decl = r; |
3111 | } | |
415d4636 | 3112 | } |
9e95d15f | 3113 | else if (TREE_CODE (decl) == FIELD_DECL) |
a26ddf11 KL |
3114 | { |
3115 | /* Since SCOPE is NULL here, this is an unqualified name. | |
3116 | Access checking has been performed during name lookup | |
3117 | already. Turn off checking to avoid duplicate errors. */ | |
3118 | push_deferring_access_checks (dk_no_check); | |
2defb926 | 3119 | decl = finish_non_static_data_member (decl, NULL_TREE, |
a26ddf11 KL |
3120 | /*qualifying_scope=*/NULL_TREE); |
3121 | pop_deferring_access_checks (); | |
3122 | } | |
9e95d15f NS |
3123 | else if (is_overloaded_fn (decl)) |
3124 | { | |
eff3a276 | 3125 | tree first_fn; |
b3445994 | 3126 | |
294e855f | 3127 | first_fn = get_first_fn (decl); |
9e95d15f NS |
3128 | if (TREE_CODE (first_fn) == TEMPLATE_DECL) |
3129 | first_fn = DECL_TEMPLATE_RESULT (first_fn); | |
415d4636 MM |
3130 | |
3131 | if (!really_overloaded_fn (decl)) | |
3132 | mark_used (first_fn); | |
3133 | ||
02ed62dd MM |
3134 | if (!template_arg_p |
3135 | && TREE_CODE (first_fn) == FUNCTION_DECL | |
821eaf2a MM |
3136 | && DECL_FUNCTION_MEMBER_P (first_fn) |
3137 | && !shared_member_p (decl)) | |
9e95d15f NS |
3138 | { |
3139 | /* A set of member functions. */ | |
3140 | decl = maybe_dummy_object (DECL_CONTEXT (first_fn), 0); | |
02ed62dd | 3141 | return finish_class_member_access_expr (decl, id_expression, |
5ade1ed2 DG |
3142 | /*template_p=*/false, |
3143 | tf_warning_or_error); | |
9e95d15f | 3144 | } |
eff3a276 MM |
3145 | |
3146 | decl = baselink_for_fns (decl); | |
9e95d15f NS |
3147 | } |
3148 | else | |
3149 | { | |
9e95d15f | 3150 | if (DECL_P (decl) && DECL_NONLOCAL (decl) |
24f58e74 | 3151 | && DECL_CLASS_SCOPE_P (decl)) |
9e95d15f | 3152 | { |
24f58e74 PC |
3153 | tree context = context_for_name_lookup (decl); |
3154 | if (context != current_class_type) | |
3155 | { | |
3156 | tree path = currently_open_derived_class (context); | |
3157 | perform_or_defer_access_check (TYPE_BINFO (path), | |
3158 | decl, decl); | |
3159 | } | |
9e95d15f | 3160 | } |
c8094d83 | 3161 | |
db24eb1f | 3162 | decl = convert_from_reference (decl); |
9e95d15f | 3163 | } |
b3445994 MM |
3164 | } |
3165 | ||
3166 | if (TREE_DEPRECATED (decl)) | |
9b86d6bb | 3167 | warn_deprecated_use (decl, NULL_TREE); |
b3445994 MM |
3168 | |
3169 | return decl; | |
3170 | } | |
3171 | ||
0213a355 JM |
3172 | /* Implement the __typeof keyword: Return the type of EXPR, suitable for |
3173 | use as a type-specifier. */ | |
3174 | ||
b894fc05 | 3175 | tree |
3a978d72 | 3176 | finish_typeof (tree expr) |
b894fc05 | 3177 | { |
65a5559b MM |
3178 | tree type; |
3179 | ||
dffbbe80 | 3180 | if (type_dependent_expression_p (expr)) |
b894fc05 | 3181 | { |
9e1e64ec | 3182 | type = cxx_make_type (TYPEOF_TYPE); |
eb34af89 | 3183 | TYPEOF_TYPE_EXPR (type) = expr; |
3ad6a8e1 | 3184 | SET_TYPE_STRUCTURAL_EQUALITY (type); |
b894fc05 | 3185 | |
65a5559b | 3186 | return type; |
b894fc05 JM |
3187 | } |
3188 | ||
03a904b5 JJ |
3189 | expr = mark_type_use (expr); |
3190 | ||
3c38f0ff | 3191 | type = unlowered_expr_type (expr); |
65a5559b MM |
3192 | |
3193 | if (!type || type == unknown_type_node) | |
3194 | { | |
a82e1a7d | 3195 | error ("type of %qE is unknown", expr); |
65a5559b MM |
3196 | return error_mark_node; |
3197 | } | |
3198 | ||
3199 | return type; | |
b894fc05 | 3200 | } |
558475f0 | 3201 | |
c291f8b1 VR |
3202 | /* Perform C++-specific checks for __builtin_offsetof before calling |
3203 | fold_offsetof. */ | |
3204 | ||
3205 | tree | |
3206 | finish_offsetof (tree expr) | |
3207 | { | |
4c65a534 VR |
3208 | if (TREE_CODE (expr) == PSEUDO_DTOR_EXPR) |
3209 | { | |
3210 | error ("cannot apply %<offsetof%> to destructor %<~%T%>", | |
3211 | TREE_OPERAND (expr, 2)); | |
3212 | return error_mark_node; | |
3213 | } | |
c291f8b1 VR |
3214 | if (TREE_CODE (TREE_TYPE (expr)) == FUNCTION_TYPE |
3215 | || TREE_CODE (TREE_TYPE (expr)) == METHOD_TYPE | |
fbfc8363 | 3216 | || TREE_TYPE (expr) == unknown_type_node) |
c291f8b1 | 3217 | { |
1916c916 VR |
3218 | if (TREE_CODE (expr) == COMPONENT_REF |
3219 | || TREE_CODE (expr) == COMPOUND_EXPR) | |
0a9367cb VR |
3220 | expr = TREE_OPERAND (expr, 1); |
3221 | error ("cannot apply %<offsetof%> to member function %qD", expr); | |
c291f8b1 VR |
3222 | return error_mark_node; |
3223 | } | |
60c4d135 JJ |
3224 | if (TREE_CODE (expr) == INDIRECT_REF && REFERENCE_REF_P (expr)) |
3225 | expr = TREE_OPERAND (expr, 0); | |
6d4d7b0e | 3226 | return fold_offsetof (expr, NULL_TREE); |
c291f8b1 VR |
3227 | } |
3228 | ||
9eeb200f JM |
3229 | /* Replace the AGGR_INIT_EXPR at *TP with an equivalent CALL_EXPR. This |
3230 | function is broken out from the above for the benefit of the tree-ssa | |
3231 | project. */ | |
3232 | ||
3233 | void | |
3234 | simplify_aggr_init_expr (tree *tp) | |
3235 | { | |
3236 | tree aggr_init_expr = *tp; | |
3237 | ||
3eb24f73 | 3238 | /* Form an appropriate CALL_EXPR. */ |
5039610b SL |
3239 | tree fn = AGGR_INIT_EXPR_FN (aggr_init_expr); |
3240 | tree slot = AGGR_INIT_EXPR_SLOT (aggr_init_expr); | |
2692eb7d | 3241 | tree type = TREE_TYPE (slot); |
9eeb200f JM |
3242 | |
3243 | tree call_expr; | |
3244 | enum style_t { ctor, arg, pcc } style; | |
4977bab6 | 3245 | |
3eb24f73 | 3246 | if (AGGR_INIT_VIA_CTOR_P (aggr_init_expr)) |
4977bab6 ZW |
3247 | style = ctor; |
3248 | #ifdef PCC_STATIC_STRUCT_RETURN | |
3249 | else if (1) | |
3250 | style = pcc; | |
3251 | #endif | |
4977bab6 | 3252 | else |
315fb5db NS |
3253 | { |
3254 | gcc_assert (TREE_ADDRESSABLE (type)); | |
3255 | style = arg; | |
3256 | } | |
4977bab6 | 3257 | |
db3927fb AH |
3258 | call_expr = build_call_array_loc (input_location, |
3259 | TREE_TYPE (TREE_TYPE (TREE_TYPE (fn))), | |
3260 | fn, | |
3261 | aggr_init_expr_nargs (aggr_init_expr), | |
3262 | AGGR_INIT_EXPR_ARGP (aggr_init_expr)); | |
d8a0d13e | 3263 | TREE_NOTHROW (call_expr) = TREE_NOTHROW (aggr_init_expr); |
5039610b | 3264 | |
fa47911c | 3265 | if (style == ctor) |
3eb24f73 | 3266 | { |
fa47911c JM |
3267 | /* Replace the first argument to the ctor with the address of the |
3268 | slot. */ | |
dffd7eb6 | 3269 | cxx_mark_addressable (slot); |
5039610b SL |
3270 | CALL_EXPR_ARG (call_expr, 0) = |
3271 | build1 (ADDR_EXPR, build_pointer_type (type), slot); | |
3eb24f73 | 3272 | } |
5039610b | 3273 | else if (style == arg) |
fa47911c JM |
3274 | { |
3275 | /* Just mark it addressable here, and leave the rest to | |
3276 | expand_call{,_inline}. */ | |
3277 | cxx_mark_addressable (slot); | |
3278 | CALL_EXPR_RETURN_SLOT_OPT (call_expr) = true; | |
941f78d1 | 3279 | call_expr = build2 (INIT_EXPR, TREE_TYPE (call_expr), slot, call_expr); |
fa47911c | 3280 | } |
4977bab6 | 3281 | else if (style == pcc) |
3eb24f73 | 3282 | { |
4977bab6 ZW |
3283 | /* If we're using the non-reentrant PCC calling convention, then we |
3284 | need to copy the returned value out of the static buffer into the | |
3285 | SLOT. */ | |
78757caa | 3286 | push_deferring_access_checks (dk_no_check); |
46af705a | 3287 | call_expr = build_aggr_init (slot, call_expr, |
5ade1ed2 DG |
3288 | DIRECT_BIND | LOOKUP_ONLYCONVERTING, |
3289 | tf_warning_or_error); | |
78757caa | 3290 | pop_deferring_access_checks (); |
d17791d6 | 3291 | call_expr = build2 (COMPOUND_EXPR, TREE_TYPE (slot), call_expr, slot); |
3eb24f73 | 3292 | } |
3eb24f73 | 3293 | |
450a927a JM |
3294 | if (AGGR_INIT_ZERO_FIRST (aggr_init_expr)) |
3295 | { | |
3296 | tree init = build_zero_init (type, NULL_TREE, | |
3297 | /*static_storage_p=*/false); | |
3298 | init = build2 (INIT_EXPR, void_type_node, slot, init); | |
3299 | call_expr = build2 (COMPOUND_EXPR, TREE_TYPE (call_expr), | |
3300 | init, call_expr); | |
3301 | } | |
3302 | ||
3eb24f73 | 3303 | *tp = call_expr; |
3eb24f73 MM |
3304 | } |
3305 | ||
31f8e4f3 MM |
3306 | /* Emit all thunks to FN that should be emitted when FN is emitted. */ |
3307 | ||
e89d6010 | 3308 | void |
3a978d72 | 3309 | emit_associated_thunks (tree fn) |
31f8e4f3 MM |
3310 | { |
3311 | /* When we use vcall offsets, we emit thunks with the virtual | |
3312 | functions to which they thunk. The whole point of vcall offsets | |
3313 | is so that you can know statically the entire set of thunks that | |
3314 | will ever be needed for a given virtual function, thereby | |
3315 | enabling you to output all the thunks with the function itself. */ | |
4537ec0c DN |
3316 | if (DECL_VIRTUAL_P (fn) |
3317 | /* Do not emit thunks for extern template instantiations. */ | |
3318 | && ! DECL_REALLY_EXTERN (fn)) | |
31f8e4f3 | 3319 | { |
bb5e8a7f | 3320 | tree thunk; |
c8094d83 | 3321 | |
bb5e8a7f | 3322 | for (thunk = DECL_THUNKS (fn); thunk; thunk = TREE_CHAIN (thunk)) |
4977bab6 | 3323 | { |
e00853fd | 3324 | if (!THUNK_ALIAS (thunk)) |
4977bab6 | 3325 | { |
bb885938 NS |
3326 | use_thunk (thunk, /*emit_p=*/1); |
3327 | if (DECL_RESULT_THUNK_P (thunk)) | |
3328 | { | |
3329 | tree probe; | |
c8094d83 | 3330 | |
bb885938 NS |
3331 | for (probe = DECL_THUNKS (thunk); |
3332 | probe; probe = TREE_CHAIN (probe)) | |
3333 | use_thunk (probe, /*emit_p=*/1); | |
3334 | } | |
4977bab6 | 3335 | } |
bb885938 | 3336 | else |
50bc768d | 3337 | gcc_assert (!DECL_THUNKS (thunk)); |
4977bab6 | 3338 | } |
31f8e4f3 MM |
3339 | } |
3340 | } | |
3341 | ||
558475f0 MM |
3342 | /* Generate RTL for FN. */ |
3343 | ||
b2583345 JJ |
3344 | bool |
3345 | expand_or_defer_fn_1 (tree fn) | |
8cd2462c JH |
3346 | { |
3347 | /* When the parser calls us after finishing the body of a template | |
c353b8e3 MM |
3348 | function, we don't really want to expand the body. */ |
3349 | if (processing_template_decl) | |
8cd2462c JH |
3350 | { |
3351 | /* Normally, collection only occurs in rest_of_compilation. So, | |
3352 | if we don't collect here, we never collect junk generated | |
3353 | during the processing of templates until we hit a | |
27250734 MM |
3354 | non-template function. It's not safe to do this inside a |
3355 | nested class, though, as the parser may have local state that | |
3356 | is not a GC root. */ | |
3357 | if (!function_depth) | |
3358 | ggc_collect (); | |
b2583345 | 3359 | return false; |
8cd2462c JH |
3360 | } |
3361 | ||
a406865a | 3362 | gcc_assert (DECL_SAVED_TREE (fn)); |
726a989a | 3363 | |
8cd2462c JH |
3364 | /* If this is a constructor or destructor body, we have to clone |
3365 | it. */ | |
3366 | if (maybe_clone_body (fn)) | |
3367 | { | |
3368 | /* We don't want to process FN again, so pretend we've written | |
3369 | it out, even though we haven't. */ | |
3370 | TREE_ASM_WRITTEN (fn) = 1; | |
c6a21142 | 3371 | DECL_SAVED_TREE (fn) = NULL_TREE; |
b2583345 | 3372 | return false; |
8cd2462c JH |
3373 | } |
3374 | ||
4684cd27 MM |
3375 | /* We make a decision about linkage for these functions at the end |
3376 | of the compilation. Until that point, we do not want the back | |
3377 | end to output them -- but we do want it to see the bodies of | |
1a10290c | 3378 | these functions so that it can inline them as appropriate. */ |
4684cd27 MM |
3379 | if (DECL_DECLARED_INLINE_P (fn) || DECL_IMPLICIT_INSTANTIATION (fn)) |
3380 | { | |
1ef0df47 MM |
3381 | if (DECL_INTERFACE_KNOWN (fn)) |
3382 | /* We've already made a decision as to how this function will | |
3383 | be handled. */; | |
3384 | else if (!at_eof) | |
4684cd27 MM |
3385 | { |
3386 | DECL_EXTERNAL (fn) = 1; | |
3387 | DECL_NOT_REALLY_EXTERN (fn) = 1; | |
3388 | note_vague_linkage_fn (fn); | |
1ef0df47 MM |
3389 | /* A non-template inline function with external linkage will |
3390 | always be COMDAT. As we must eventually determine the | |
3391 | linkage of all functions, and as that causes writes to | |
3392 | the data mapped in from the PCH file, it's advantageous | |
3393 | to mark the functions at this point. */ | |
3394 | if (!DECL_IMPLICIT_INSTANTIATION (fn)) | |
3395 | { | |
3396 | /* This function must have external linkage, as | |
3397 | otherwise DECL_INTERFACE_KNOWN would have been | |
3398 | set. */ | |
3399 | gcc_assert (TREE_PUBLIC (fn)); | |
3400 | comdat_linkage (fn); | |
3401 | DECL_INTERFACE_KNOWN (fn) = 1; | |
3402 | } | |
4684cd27 MM |
3403 | } |
3404 | else | |
3405 | import_export_decl (fn); | |
1a10290c MM |
3406 | |
3407 | /* If the user wants us to keep all inline functions, then mark | |
3408 | this function as needed so that finish_file will make sure to | |
fe2978fb MM |
3409 | output it later. Similarly, all dllexport'd functions must |
3410 | be emitted; there may be callers in other DLLs. */ | |
3fc20697 RG |
3411 | if ((flag_keep_inline_functions |
3412 | && DECL_DECLARED_INLINE_P (fn) | |
3413 | && !DECL_REALLY_EXTERN (fn)) | |
fe2978fb | 3414 | || lookup_attribute ("dllexport", DECL_ATTRIBUTES (fn))) |
1a10290c | 3415 | mark_needed (fn); |
4684cd27 MM |
3416 | } |
3417 | ||
8cd2462c JH |
3418 | /* There's no reason to do any of the work here if we're only doing |
3419 | semantic analysis; this code just generates RTL. */ | |
3420 | if (flag_syntax_only) | |
b2583345 JJ |
3421 | return false; |
3422 | ||
3423 | return true; | |
3424 | } | |
8cd2462c | 3425 | |
b2583345 JJ |
3426 | void |
3427 | expand_or_defer_fn (tree fn) | |
3428 | { | |
3429 | if (expand_or_defer_fn_1 (fn)) | |
3430 | { | |
3431 | function_depth++; | |
99edd65d | 3432 | |
b2583345 JJ |
3433 | /* Expand or defer, at the whim of the compilation unit manager. */ |
3434 | cgraph_finalize_function (fn, function_depth > 1); | |
6744a6ab | 3435 | emit_associated_thunks (fn); |
99edd65d | 3436 | |
b2583345 JJ |
3437 | function_depth--; |
3438 | } | |
8cd2462c JH |
3439 | } |
3440 | ||
6de9cd9a DN |
3441 | struct nrv_data |
3442 | { | |
3443 | tree var; | |
3444 | tree result; | |
3445 | htab_t visited; | |
3446 | }; | |
0d97bf4c | 3447 | |
6de9cd9a DN |
3448 | /* Helper function for walk_tree, used by finalize_nrv below. */ |
3449 | ||
3450 | static tree | |
3451 | finalize_nrv_r (tree* tp, int* walk_subtrees, void* data) | |
0d97bf4c | 3452 | { |
6de9cd9a DN |
3453 | struct nrv_data *dp = (struct nrv_data *)data; |
3454 | void **slot; | |
07b2f2fd JM |
3455 | |
3456 | /* No need to walk into types. There wouldn't be any need to walk into | |
3457 | non-statements, except that we have to consider STMT_EXPRs. */ | |
0d97bf4c JM |
3458 | if (TYPE_P (*tp)) |
3459 | *walk_subtrees = 0; | |
6de9cd9a DN |
3460 | /* Change all returns to just refer to the RESULT_DECL; this is a nop, |
3461 | but differs from using NULL_TREE in that it indicates that we care | |
3462 | about the value of the RESULT_DECL. */ | |
5088b058 RH |
3463 | else if (TREE_CODE (*tp) == RETURN_EXPR) |
3464 | TREE_OPERAND (*tp, 0) = dp->result; | |
6de9cd9a DN |
3465 | /* Change all cleanups for the NRV to only run when an exception is |
3466 | thrown. */ | |
07b2f2fd | 3467 | else if (TREE_CODE (*tp) == CLEANUP_STMT |
6de9cd9a | 3468 | && CLEANUP_DECL (*tp) == dp->var) |
659e5a7a | 3469 | CLEANUP_EH_ONLY (*tp) = 1; |
350fae66 | 3470 | /* Replace the DECL_EXPR for the NRV with an initialization of the |
6de9cd9a | 3471 | RESULT_DECL, if needed. */ |
350fae66 RK |
3472 | else if (TREE_CODE (*tp) == DECL_EXPR |
3473 | && DECL_EXPR_DECL (*tp) == dp->var) | |
6de9cd9a DN |
3474 | { |
3475 | tree init; | |
3476 | if (DECL_INITIAL (dp->var) | |
3477 | && DECL_INITIAL (dp->var) != error_mark_node) | |
2d188530 JJ |
3478 | init = build2 (INIT_EXPR, void_type_node, dp->result, |
3479 | DECL_INITIAL (dp->var)); | |
6de9cd9a | 3480 | else |
c2255bc4 | 3481 | init = build_empty_stmt (EXPR_LOCATION (*tp)); |
2d188530 | 3482 | DECL_INITIAL (dp->var) = NULL_TREE; |
5e278028 | 3483 | SET_EXPR_LOCATION (init, EXPR_LOCATION (*tp)); |
6de9cd9a DN |
3484 | *tp = init; |
3485 | } | |
3486 | /* And replace all uses of the NRV with the RESULT_DECL. */ | |
3487 | else if (*tp == dp->var) | |
3488 | *tp = dp->result; | |
3489 | ||
3490 | /* Avoid walking into the same tree more than once. Unfortunately, we | |
3491 | can't just use walk_tree_without duplicates because it would only call | |
3492 | us for the first occurrence of dp->var in the function body. */ | |
3493 | slot = htab_find_slot (dp->visited, *tp, INSERT); | |
3494 | if (*slot) | |
3495 | *walk_subtrees = 0; | |
3496 | else | |
3497 | *slot = *tp; | |
0d97bf4c JM |
3498 | |
3499 | /* Keep iterating. */ | |
3500 | return NULL_TREE; | |
3501 | } | |
3502 | ||
6de9cd9a | 3503 | /* Called from finish_function to implement the named return value |
5088b058 | 3504 | optimization by overriding all the RETURN_EXPRs and pertinent |
6de9cd9a DN |
3505 | CLEANUP_STMTs and replacing all occurrences of VAR with RESULT, the |
3506 | RESULT_DECL for the function. */ | |
f444e36b | 3507 | |
4985cde3 | 3508 | void |
6de9cd9a | 3509 | finalize_nrv (tree *tp, tree var, tree result) |
f444e36b | 3510 | { |
6de9cd9a DN |
3511 | struct nrv_data data; |
3512 | ||
add86e09 | 3513 | /* Copy name from VAR to RESULT. */ |
6de9cd9a | 3514 | DECL_NAME (result) = DECL_NAME (var); |
6de9cd9a DN |
3515 | /* Don't forget that we take its address. */ |
3516 | TREE_ADDRESSABLE (result) = TREE_ADDRESSABLE (var); | |
add86e09 JJ |
3517 | /* Finally set DECL_VALUE_EXPR to avoid assigning |
3518 | a stack slot at -O0 for the original var and debug info | |
3519 | uses RESULT location for VAR. */ | |
3520 | SET_DECL_VALUE_EXPR (var, result); | |
3521 | DECL_HAS_VALUE_EXPR_P (var) = 1; | |
6de9cd9a DN |
3522 | |
3523 | data.var = var; | |
3524 | data.result = result; | |
3525 | data.visited = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL); | |
14588106 | 3526 | cp_walk_tree (tp, finalize_nrv_r, &data, 0); |
6de9cd9a | 3527 | htab_delete (data.visited); |
b850de4f | 3528 | } |
1799e5d5 | 3529 | \f |
7a0112e7 JJ |
3530 | /* Return the declaration for the function called by CALL_EXPR T, |
3531 | TYPE is the class type of the clause decl. */ | |
3532 | ||
3533 | static tree | |
3534 | omp_clause_info_fndecl (tree t, tree type) | |
3535 | { | |
3536 | tree ret = get_callee_fndecl (t); | |
3537 | ||
3538 | if (ret) | |
3539 | return ret; | |
3540 | ||
3541 | gcc_assert (TREE_CODE (t) == CALL_EXPR); | |
3542 | t = CALL_EXPR_FN (t); | |
3543 | STRIP_NOPS (t); | |
3544 | if (TREE_CODE (t) == OBJ_TYPE_REF) | |
3545 | { | |
3546 | t = cp_fold_obj_type_ref (t, type); | |
3547 | if (TREE_CODE (t) == ADDR_EXPR | |
3548 | && TREE_CODE (TREE_OPERAND (t, 0)) == FUNCTION_DECL) | |
3549 | return TREE_OPERAND (t, 0); | |
3550 | } | |
3551 | ||
3552 | return NULL_TREE; | |
3553 | } | |
3554 | ||
a68ab351 JJ |
3555 | /* Create CP_OMP_CLAUSE_INFO for clause C. Returns true if it is invalid. */ |
3556 | ||
3557 | bool | |
3558 | cxx_omp_create_clause_info (tree c, tree type, bool need_default_ctor, | |
3559 | bool need_copy_ctor, bool need_copy_assignment) | |
3560 | { | |
3561 | int save_errorcount = errorcount; | |
3562 | tree info, t; | |
3563 | ||
3564 | /* Always allocate 3 elements for simplicity. These are the | |
3565 | function decls for the ctor, dtor, and assignment op. | |
3566 | This layout is known to the three lang hooks, | |
3567 | cxx_omp_clause_default_init, cxx_omp_clause_copy_init, | |
3568 | and cxx_omp_clause_assign_op. */ | |
3569 | info = make_tree_vec (3); | |
3570 | CP_OMP_CLAUSE_INFO (c) = info; | |
3571 | ||
3572 | if (need_default_ctor | |
066ec0a4 | 3573 | || (need_copy_ctor && !TYPE_HAS_TRIVIAL_COPY_CTOR (type))) |
a68ab351 | 3574 | { |
c166b898 ILT |
3575 | VEC(tree,gc) *vec; |
3576 | ||
a68ab351 | 3577 | if (need_default_ctor) |
c166b898 | 3578 | vec = NULL; |
a68ab351 JJ |
3579 | else |
3580 | { | |
3581 | t = build_int_cst (build_pointer_type (type), 0); | |
3582 | t = build1 (INDIRECT_REF, type, t); | |
c166b898 | 3583 | vec = make_tree_vector_single (t); |
a68ab351 JJ |
3584 | } |
3585 | t = build_special_member_call (NULL_TREE, complete_ctor_identifier, | |
c166b898 | 3586 | &vec, type, LOOKUP_NORMAL, |
a68ab351 JJ |
3587 | tf_warning_or_error); |
3588 | ||
c166b898 ILT |
3589 | if (vec != NULL) |
3590 | release_tree_vector (vec); | |
3591 | ||
a68ab351 JJ |
3592 | if (targetm.cxx.cdtor_returns_this () || errorcount) |
3593 | /* Because constructors and destructors return this, | |
3594 | the call will have been cast to "void". Remove the | |
3595 | cast here. We would like to use STRIP_NOPS, but it | |
3596 | wouldn't work here because TYPE_MODE (t) and | |
3597 | TYPE_MODE (TREE_OPERAND (t, 0)) are different. | |
3598 | They are VOIDmode and Pmode, respectively. */ | |
3599 | if (TREE_CODE (t) == NOP_EXPR) | |
3600 | t = TREE_OPERAND (t, 0); | |
3601 | ||
3602 | TREE_VEC_ELT (info, 0) = get_callee_fndecl (t); | |
3603 | } | |
3604 | ||
3605 | if ((need_default_ctor || need_copy_ctor) | |
3606 | && TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type)) | |
3607 | { | |
3608 | t = build_int_cst (build_pointer_type (type), 0); | |
3609 | t = build1 (INDIRECT_REF, type, t); | |
3610 | t = build_special_member_call (t, complete_dtor_identifier, | |
3611 | NULL, type, LOOKUP_NORMAL, | |
3612 | tf_warning_or_error); | |
3613 | ||
3614 | if (targetm.cxx.cdtor_returns_this () || errorcount) | |
3615 | /* Because constructors and destructors return this, | |
3616 | the call will have been cast to "void". Remove the | |
3617 | cast here. We would like to use STRIP_NOPS, but it | |
3618 | wouldn't work here because TYPE_MODE (t) and | |
3619 | TYPE_MODE (TREE_OPERAND (t, 0)) are different. | |
3620 | They are VOIDmode and Pmode, respectively. */ | |
3621 | if (TREE_CODE (t) == NOP_EXPR) | |
3622 | t = TREE_OPERAND (t, 0); | |
3623 | ||
3624 | TREE_VEC_ELT (info, 1) = omp_clause_info_fndecl (t, type); | |
3625 | } | |
3626 | ||
066ec0a4 | 3627 | if (need_copy_assignment && !TYPE_HAS_TRIVIAL_COPY_ASSIGN (type)) |
a68ab351 | 3628 | { |
c166b898 ILT |
3629 | VEC(tree,gc) *vec; |
3630 | ||
a68ab351 JJ |
3631 | t = build_int_cst (build_pointer_type (type), 0); |
3632 | t = build1 (INDIRECT_REF, type, t); | |
c166b898 | 3633 | vec = make_tree_vector_single (t); |
a68ab351 | 3634 | t = build_special_member_call (t, ansi_assopname (NOP_EXPR), |
c166b898 | 3635 | &vec, type, LOOKUP_NORMAL, |
a68ab351 | 3636 | tf_warning_or_error); |
c166b898 | 3637 | release_tree_vector (vec); |
a68ab351 JJ |
3638 | |
3639 | /* We'll have called convert_from_reference on the call, which | |
3640 | may well have added an indirect_ref. It's unneeded here, | |
3641 | and in the way, so kill it. */ | |
3642 | if (TREE_CODE (t) == INDIRECT_REF) | |
3643 | t = TREE_OPERAND (t, 0); | |
3644 | ||
3645 | TREE_VEC_ELT (info, 2) = omp_clause_info_fndecl (t, type); | |
3646 | } | |
3647 | ||
3648 | return errorcount != save_errorcount; | |
3649 | } | |
3650 | ||
1799e5d5 RH |
3651 | /* For all elements of CLAUSES, validate them vs OpenMP constraints. |
3652 | Remove any elements from the list that are invalid. */ | |
3653 | ||
3654 | tree | |
3655 | finish_omp_clauses (tree clauses) | |
3656 | { | |
3657 | bitmap_head generic_head, firstprivate_head, lastprivate_head; | |
3658 | tree c, t, *pc = &clauses; | |
3659 | const char *name; | |
3660 | ||
3661 | bitmap_obstack_initialize (NULL); | |
3662 | bitmap_initialize (&generic_head, &bitmap_default_obstack); | |
3663 | bitmap_initialize (&firstprivate_head, &bitmap_default_obstack); | |
3664 | bitmap_initialize (&lastprivate_head, &bitmap_default_obstack); | |
3665 | ||
3666 | for (pc = &clauses, c = clauses; c ; c = *pc) | |
3667 | { | |
3668 | bool remove = false; | |
3669 | ||
3670 | switch (OMP_CLAUSE_CODE (c)) | |
3671 | { | |
3672 | case OMP_CLAUSE_SHARED: | |
3673 | name = "shared"; | |
3674 | goto check_dup_generic; | |
3675 | case OMP_CLAUSE_PRIVATE: | |
3676 | name = "private"; | |
3677 | goto check_dup_generic; | |
3678 | case OMP_CLAUSE_REDUCTION: | |
3679 | name = "reduction"; | |
3680 | goto check_dup_generic; | |
3681 | case OMP_CLAUSE_COPYPRIVATE: | |
3682 | name = "copyprivate"; | |
3683 | goto check_dup_generic; | |
3684 | case OMP_CLAUSE_COPYIN: | |
3685 | name = "copyin"; | |
3686 | goto check_dup_generic; | |
3687 | check_dup_generic: | |
3688 | t = OMP_CLAUSE_DECL (c); | |
3689 | if (TREE_CODE (t) != VAR_DECL && TREE_CODE (t) != PARM_DECL) | |
3690 | { | |
3691 | if (processing_template_decl) | |
3692 | break; | |
76dc15d4 JJ |
3693 | if (DECL_P (t)) |
3694 | error ("%qD is not a variable in clause %qs", t, name); | |
3695 | else | |
3696 | error ("%qE is not a variable in clause %qs", t, name); | |
1799e5d5 RH |
3697 | remove = true; |
3698 | } | |
3699 | else if (bitmap_bit_p (&generic_head, DECL_UID (t)) | |
3700 | || bitmap_bit_p (&firstprivate_head, DECL_UID (t)) | |
3701 | || bitmap_bit_p (&lastprivate_head, DECL_UID (t))) | |
3702 | { | |
76dc15d4 | 3703 | error ("%qD appears more than once in data clauses", t); |
1799e5d5 RH |
3704 | remove = true; |
3705 | } | |
3706 | else | |
3707 | bitmap_set_bit (&generic_head, DECL_UID (t)); | |
3708 | break; | |
3709 | ||
3710 | case OMP_CLAUSE_FIRSTPRIVATE: | |
3711 | t = OMP_CLAUSE_DECL (c); | |
3712 | if (TREE_CODE (t) != VAR_DECL && TREE_CODE (t) != PARM_DECL) | |
3713 | { | |
3714 | if (processing_template_decl) | |
3715 | break; | |
85b20612 JJ |
3716 | if (DECL_P (t)) |
3717 | error ("%qD is not a variable in clause %<firstprivate%>", t); | |
3718 | else | |
3719 | error ("%qE is not a variable in clause %<firstprivate%>", t); | |
1799e5d5 RH |
3720 | remove = true; |
3721 | } | |
3722 | else if (bitmap_bit_p (&generic_head, DECL_UID (t)) | |
3723 | || bitmap_bit_p (&firstprivate_head, DECL_UID (t))) | |
3724 | { | |
85b20612 | 3725 | error ("%qD appears more than once in data clauses", t); |
1799e5d5 RH |
3726 | remove = true; |
3727 | } | |
3728 | else | |
3729 | bitmap_set_bit (&firstprivate_head, DECL_UID (t)); | |
3730 | break; | |
3731 | ||
3732 | case OMP_CLAUSE_LASTPRIVATE: | |
3733 | t = OMP_CLAUSE_DECL (c); | |
3734 | if (TREE_CODE (t) != VAR_DECL && TREE_CODE (t) != PARM_DECL) | |
3735 | { | |
3736 | if (processing_template_decl) | |
3737 | break; | |
85b20612 JJ |
3738 | if (DECL_P (t)) |
3739 | error ("%qD is not a variable in clause %<lastprivate%>", t); | |
3740 | else | |
3741 | error ("%qE is not a variable in clause %<lastprivate%>", t); | |
1799e5d5 RH |
3742 | remove = true; |
3743 | } | |
3744 | else if (bitmap_bit_p (&generic_head, DECL_UID (t)) | |
3745 | || bitmap_bit_p (&lastprivate_head, DECL_UID (t))) | |
3746 | { | |
85b20612 | 3747 | error ("%qD appears more than once in data clauses", t); |
1799e5d5 RH |
3748 | remove = true; |
3749 | } | |
3750 | else | |
3751 | bitmap_set_bit (&lastprivate_head, DECL_UID (t)); | |
3752 | break; | |
3753 | ||
3754 | case OMP_CLAUSE_IF: | |
3755 | t = OMP_CLAUSE_IF_EXPR (c); | |
3756 | t = maybe_convert_cond (t); | |
3757 | if (t == error_mark_node) | |
3758 | remove = true; | |
3759 | OMP_CLAUSE_IF_EXPR (c) = t; | |
3760 | break; | |
3761 | ||
3762 | case OMP_CLAUSE_NUM_THREADS: | |
3763 | t = OMP_CLAUSE_NUM_THREADS_EXPR (c); | |
3764 | if (t == error_mark_node) | |
3765 | remove = true; | |
6e684eee JJ |
3766 | else if (!type_dependent_expression_p (t) |
3767 | && !INTEGRAL_TYPE_P (TREE_TYPE (t))) | |
1799e5d5 RH |
3768 | { |
3769 | error ("num_threads expression must be integral"); | |
3770 | remove = true; | |
3771 | } | |
3772 | break; | |
3773 | ||
3774 | case OMP_CLAUSE_SCHEDULE: | |
3775 | t = OMP_CLAUSE_SCHEDULE_CHUNK_EXPR (c); | |
3776 | if (t == NULL) | |
3777 | ; | |
3778 | else if (t == error_mark_node) | |
3779 | remove = true; | |
6e684eee JJ |
3780 | else if (!type_dependent_expression_p (t) |
3781 | && !INTEGRAL_TYPE_P (TREE_TYPE (t))) | |
1799e5d5 RH |
3782 | { |
3783 | error ("schedule chunk size expression must be integral"); | |
3784 | remove = true; | |
3785 | } | |
3786 | break; | |
3787 | ||
3788 | case OMP_CLAUSE_NOWAIT: | |
3789 | case OMP_CLAUSE_ORDERED: | |
3790 | case OMP_CLAUSE_DEFAULT: | |
a68ab351 JJ |
3791 | case OMP_CLAUSE_UNTIED: |
3792 | case OMP_CLAUSE_COLLAPSE: | |
1799e5d5 RH |
3793 | break; |
3794 | ||
3795 | default: | |
3796 | gcc_unreachable (); | |
3797 | } | |
3798 | ||
3799 | if (remove) | |
3800 | *pc = OMP_CLAUSE_CHAIN (c); | |
3801 | else | |
3802 | pc = &OMP_CLAUSE_CHAIN (c); | |
3803 | } | |
3804 | ||
3805 | for (pc = &clauses, c = clauses; c ; c = *pc) | |
3806 | { | |
81f40b79 | 3807 | enum omp_clause_code c_kind = OMP_CLAUSE_CODE (c); |
1799e5d5 RH |
3808 | bool remove = false; |
3809 | bool need_complete_non_reference = false; | |
3810 | bool need_default_ctor = false; | |
3811 | bool need_copy_ctor = false; | |
3812 | bool need_copy_assignment = false; | |
3813 | bool need_implicitly_determined = false; | |
3814 | tree type, inner_type; | |
3815 | ||
3816 | switch (c_kind) | |
3817 | { | |
3818 | case OMP_CLAUSE_SHARED: | |
3819 | name = "shared"; | |
3820 | need_implicitly_determined = true; | |
3821 | break; | |
3822 | case OMP_CLAUSE_PRIVATE: | |
3823 | name = "private"; | |
3824 | need_complete_non_reference = true; | |
3825 | need_default_ctor = true; | |
3826 | need_implicitly_determined = true; | |
3827 | break; | |
3828 | case OMP_CLAUSE_FIRSTPRIVATE: | |
3829 | name = "firstprivate"; | |
3830 | need_complete_non_reference = true; | |
3831 | need_copy_ctor = true; | |
3832 | need_implicitly_determined = true; | |
3833 | break; | |
3834 | case OMP_CLAUSE_LASTPRIVATE: | |
3835 | name = "lastprivate"; | |
3836 | need_complete_non_reference = true; | |
3837 | need_copy_assignment = true; | |
3838 | need_implicitly_determined = true; | |
3839 | break; | |
3840 | case OMP_CLAUSE_REDUCTION: | |
3841 | name = "reduction"; | |
3842 | need_implicitly_determined = true; | |
3843 | break; | |
3844 | case OMP_CLAUSE_COPYPRIVATE: | |
3845 | name = "copyprivate"; | |
3846 | need_copy_assignment = true; | |
3847 | break; | |
3848 | case OMP_CLAUSE_COPYIN: | |
3849 | name = "copyin"; | |
3850 | need_copy_assignment = true; | |
3851 | break; | |
3852 | default: | |
3853 | pc = &OMP_CLAUSE_CHAIN (c); | |
3854 | continue; | |
3855 | } | |
3856 | ||
3857 | t = OMP_CLAUSE_DECL (c); | |
3858 | if (processing_template_decl | |
3859 | && TREE_CODE (t) != VAR_DECL && TREE_CODE (t) != PARM_DECL) | |
3860 | { | |
3861 | pc = &OMP_CLAUSE_CHAIN (c); | |
3862 | continue; | |
3863 | } | |
3864 | ||
3865 | switch (c_kind) | |
3866 | { | |
3867 | case OMP_CLAUSE_LASTPRIVATE: | |
3868 | if (!bitmap_bit_p (&firstprivate_head, DECL_UID (t))) | |
3869 | need_default_ctor = true; | |
3870 | break; | |
3871 | ||
3872 | case OMP_CLAUSE_REDUCTION: | |
3873 | if (AGGREGATE_TYPE_P (TREE_TYPE (t)) | |
3874 | || POINTER_TYPE_P (TREE_TYPE (t))) | |
3875 | { | |
3876 | error ("%qE has invalid type for %<reduction%>", t); | |
3877 | remove = true; | |
3878 | } | |
3879 | else if (FLOAT_TYPE_P (TREE_TYPE (t))) | |
3880 | { | |
3881 | enum tree_code r_code = OMP_CLAUSE_REDUCTION_CODE (c); | |
3882 | switch (r_code) | |
3883 | { | |
3884 | case PLUS_EXPR: | |
3885 | case MULT_EXPR: | |
3886 | case MINUS_EXPR: | |
3887 | break; | |
3888 | default: | |
3889 | error ("%qE has invalid type for %<reduction(%s)%>", | |
3890 | t, operator_name_info[r_code].name); | |
3891 | remove = true; | |
3892 | } | |
3893 | } | |
3894 | break; | |
3895 | ||
3896 | case OMP_CLAUSE_COPYIN: | |
3897 | if (TREE_CODE (t) != VAR_DECL || !DECL_THREAD_LOCAL_P (t)) | |
3898 | { | |
3899 | error ("%qE must be %<threadprivate%> for %<copyin%>", t); | |
3900 | remove = true; | |
3901 | } | |
3902 | break; | |
3903 | ||
3904 | default: | |
3905 | break; | |
3906 | } | |
3907 | ||
3908 | if (need_complete_non_reference) | |
3909 | { | |
3910 | t = require_complete_type (t); | |
3911 | if (t == error_mark_node) | |
3912 | remove = true; | |
3913 | else if (TREE_CODE (TREE_TYPE (t)) == REFERENCE_TYPE) | |
3914 | { | |
3915 | error ("%qE has reference type for %qs", t, name); | |
3916 | remove = true; | |
3917 | } | |
3918 | } | |
3919 | if (need_implicitly_determined) | |
3920 | { | |
3921 | const char *share_name = NULL; | |
3922 | ||
3923 | if (TREE_CODE (t) == VAR_DECL && DECL_THREAD_LOCAL_P (t)) | |
3924 | share_name = "threadprivate"; | |
3925 | else switch (cxx_omp_predetermined_sharing (t)) | |
3926 | { | |
3927 | case OMP_CLAUSE_DEFAULT_UNSPECIFIED: | |
3928 | break; | |
3929 | case OMP_CLAUSE_DEFAULT_SHARED: | |
3930 | share_name = "shared"; | |
3931 | break; | |
3932 | case OMP_CLAUSE_DEFAULT_PRIVATE: | |
3933 | share_name = "private"; | |
3934 | break; | |
3935 | default: | |
3936 | gcc_unreachable (); | |
3937 | } | |
3938 | if (share_name) | |
3939 | { | |
3940 | error ("%qE is predetermined %qs for %qs", | |
3941 | t, share_name, name); | |
3942 | remove = true; | |
3943 | } | |
3944 | } | |
3945 | ||
3946 | /* We're interested in the base element, not arrays. */ | |
3947 | inner_type = type = TREE_TYPE (t); | |
3948 | while (TREE_CODE (inner_type) == ARRAY_TYPE) | |
3949 | inner_type = TREE_TYPE (inner_type); | |
3950 | ||
84dc00e8 | 3951 | /* Check for special function availability by building a call to one. |
1799e5d5 RH |
3952 | Save the results, because later we won't be in the right context |
3953 | for making these queries. */ | |
3954 | if (CLASS_TYPE_P (inner_type) | |
6f719560 | 3955 | && (need_default_ctor || need_copy_ctor || need_copy_assignment) |
a68ab351 JJ |
3956 | && !type_dependent_expression_p (t) |
3957 | && cxx_omp_create_clause_info (c, inner_type, need_default_ctor, | |
3958 | need_copy_ctor, need_copy_assignment)) | |
3959 | remove = true; | |
1799e5d5 RH |
3960 | |
3961 | if (remove) | |
3962 | *pc = OMP_CLAUSE_CHAIN (c); | |
3963 | else | |
3964 | pc = &OMP_CLAUSE_CHAIN (c); | |
3965 | } | |
3966 | ||
3967 | bitmap_obstack_release (NULL); | |
3968 | return clauses; | |
3969 | } | |
3970 | ||
3971 | /* For all variables in the tree_list VARS, mark them as thread local. */ | |
3972 | ||
3973 | void | |
3974 | finish_omp_threadprivate (tree vars) | |
3975 | { | |
3976 | tree t; | |
3977 | ||
3978 | /* Mark every variable in VARS to be assigned thread local storage. */ | |
3979 | for (t = vars; t; t = TREE_CHAIN (t)) | |
3980 | { | |
3981 | tree v = TREE_PURPOSE (t); | |
3982 | ||
edb6000e JJ |
3983 | if (error_operand_p (v)) |
3984 | ; | |
3985 | else if (TREE_CODE (v) != VAR_DECL) | |
3986 | error ("%<threadprivate%> %qD is not file, namespace " | |
3987 | "or block scope variable", v); | |
1799e5d5 RH |
3988 | /* If V had already been marked threadprivate, it doesn't matter |
3989 | whether it had been used prior to this point. */ | |
edb6000e | 3990 | else if (TREE_USED (v) |
1799e5d5 RH |
3991 | && (DECL_LANG_SPECIFIC (v) == NULL |
3992 | || !CP_DECL_THREADPRIVATE_P (v))) | |
3993 | error ("%qE declared %<threadprivate%> after first use", v); | |
3994 | else if (! TREE_STATIC (v) && ! DECL_EXTERNAL (v)) | |
3995 | error ("automatic variable %qE cannot be %<threadprivate%>", v); | |
3996 | else if (! COMPLETE_TYPE_P (TREE_TYPE (v))) | |
3997 | error ("%<threadprivate%> %qE has incomplete type", v); | |
a68ab351 JJ |
3998 | else if (TREE_STATIC (v) && TYPE_P (CP_DECL_CONTEXT (v)) |
3999 | && CP_DECL_CONTEXT (v) != current_class_type) | |
4000 | error ("%<threadprivate%> %qE directive not " | |
4001 | "in %qT definition", v, CP_DECL_CONTEXT (v)); | |
1799e5d5 RH |
4002 | else |
4003 | { | |
4004 | /* Allocate a LANG_SPECIFIC structure for V, if needed. */ | |
4005 | if (DECL_LANG_SPECIFIC (v) == NULL) | |
4006 | { | |
4007 | retrofit_lang_decl (v); | |
4008 | ||
4009 | /* Make sure that DECL_DISCRIMINATOR_P continues to be true | |
4010 | after the allocation of the lang_decl structure. */ | |
4011 | if (DECL_DISCRIMINATOR_P (v)) | |
b97e8a14 | 4012 | DECL_LANG_SPECIFIC (v)->u.base.u2sel = 1; |
1799e5d5 RH |
4013 | } |
4014 | ||
4015 | if (! DECL_THREAD_LOCAL_P (v)) | |
4016 | { | |
4017 | DECL_TLS_MODEL (v) = decl_default_tls_model (v); | |
4018 | /* If rtl has been already set for this var, call | |
4019 | make_decl_rtl once again, so that encode_section_info | |
4020 | has a chance to look at the new decl flags. */ | |
4021 | if (DECL_RTL_SET_P (v)) | |
4022 | make_decl_rtl (v); | |
4023 | } | |
4024 | CP_DECL_THREADPRIVATE_P (v) = 1; | |
4025 | } | |
4026 | } | |
4027 | } | |
4028 | ||
4029 | /* Build an OpenMP structured block. */ | |
4030 | ||
4031 | tree | |
4032 | begin_omp_structured_block (void) | |
4033 | { | |
4034 | return do_pushlevel (sk_omp); | |
4035 | } | |
4036 | ||
4037 | tree | |
4038 | finish_omp_structured_block (tree block) | |
4039 | { | |
4040 | return do_poplevel (block); | |
4041 | } | |
4042 | ||
84dc00e8 | 4043 | /* Similarly, except force the retention of the BLOCK. */ |
1799e5d5 RH |
4044 | |
4045 | tree | |
4046 | begin_omp_parallel (void) | |
4047 | { | |
4048 | keep_next_level (true); | |
4049 | return begin_omp_structured_block (); | |
4050 | } | |
4051 | ||
4052 | tree | |
4053 | finish_omp_parallel (tree clauses, tree body) | |
4054 | { | |
4055 | tree stmt; | |
4056 | ||
4057 | body = finish_omp_structured_block (body); | |
b850de4f | 4058 | |
1799e5d5 RH |
4059 | stmt = make_node (OMP_PARALLEL); |
4060 | TREE_TYPE (stmt) = void_type_node; | |
4061 | OMP_PARALLEL_CLAUSES (stmt) = clauses; | |
4062 | OMP_PARALLEL_BODY (stmt) = body; | |
54f7877c | 4063 | |
1799e5d5 RH |
4064 | return add_stmt (stmt); |
4065 | } | |
4066 | ||
a68ab351 JJ |
4067 | tree |
4068 | begin_omp_task (void) | |
4069 | { | |
4070 | keep_next_level (true); | |
4071 | return begin_omp_structured_block (); | |
4072 | } | |
4073 | ||
4074 | tree | |
4075 | finish_omp_task (tree clauses, tree body) | |
4076 | { | |
4077 | tree stmt; | |
4078 | ||
4079 | body = finish_omp_structured_block (body); | |
4080 | ||
4081 | stmt = make_node (OMP_TASK); | |
4082 | TREE_TYPE (stmt) = void_type_node; | |
4083 | OMP_TASK_CLAUSES (stmt) = clauses; | |
4084 | OMP_TASK_BODY (stmt) = body; | |
4085 | ||
4086 | return add_stmt (stmt); | |
4087 | } | |
4088 | ||
4089 | /* Helper function for finish_omp_for. Convert Ith random access iterator | |
4090 | into integral iterator. Return FALSE if successful. */ | |
4091 | ||
4092 | static bool | |
4093 | handle_omp_for_class_iterator (int i, location_t locus, tree declv, tree initv, | |
4094 | tree condv, tree incrv, tree *body, | |
4095 | tree *pre_body, tree clauses) | |
4096 | { | |
4097 | tree diff, iter_init, iter_incr = NULL, last; | |
4098 | tree incr_var = NULL, orig_pre_body, orig_body, c; | |
4099 | tree decl = TREE_VEC_ELT (declv, i); | |
4100 | tree init = TREE_VEC_ELT (initv, i); | |
4101 | tree cond = TREE_VEC_ELT (condv, i); | |
4102 | tree incr = TREE_VEC_ELT (incrv, i); | |
4103 | tree iter = decl; | |
4104 | location_t elocus = locus; | |
4105 | ||
4106 | if (init && EXPR_HAS_LOCATION (init)) | |
4107 | elocus = EXPR_LOCATION (init); | |
4108 | ||
4109 | switch (TREE_CODE (cond)) | |
4110 | { | |
4111 | case GT_EXPR: | |
4112 | case GE_EXPR: | |
4113 | case LT_EXPR: | |
4114 | case LE_EXPR: | |
c5cdb03f JJ |
4115 | if (TREE_OPERAND (cond, 1) == iter) |
4116 | cond = build2 (swap_tree_comparison (TREE_CODE (cond)), | |
4117 | TREE_TYPE (cond), iter, TREE_OPERAND (cond, 0)); | |
a68ab351 JJ |
4118 | if (TREE_OPERAND (cond, 0) != iter) |
4119 | cond = error_mark_node; | |
4120 | else | |
4121 | { | |
4122 | tree tem = build_x_binary_op (TREE_CODE (cond), iter, ERROR_MARK, | |
4123 | TREE_OPERAND (cond, 1), ERROR_MARK, | |
4124 | NULL, tf_warning_or_error); | |
4125 | if (error_operand_p (tem)) | |
4126 | return true; | |
4127 | } | |
4128 | break; | |
4129 | default: | |
4130 | cond = error_mark_node; | |
4131 | break; | |
4132 | } | |
4133 | if (cond == error_mark_node) | |
4134 | { | |
69bc6bff | 4135 | error_at (elocus, "invalid controlling predicate"); |
a68ab351 JJ |
4136 | return true; |
4137 | } | |
4138 | diff = build_x_binary_op (MINUS_EXPR, TREE_OPERAND (cond, 1), | |
4139 | ERROR_MARK, iter, ERROR_MARK, NULL, | |
4140 | tf_warning_or_error); | |
4141 | if (error_operand_p (diff)) | |
4142 | return true; | |
4143 | if (TREE_CODE (TREE_TYPE (diff)) != INTEGER_TYPE) | |
4144 | { | |
69bc6bff MLI |
4145 | error_at (elocus, "difference between %qE and %qD does not have integer type", |
4146 | TREE_OPERAND (cond, 1), iter); | |
a68ab351 JJ |
4147 | return true; |
4148 | } | |
4149 | ||
4150 | switch (TREE_CODE (incr)) | |
4151 | { | |
4152 | case PREINCREMENT_EXPR: | |
4153 | case PREDECREMENT_EXPR: | |
4154 | case POSTINCREMENT_EXPR: | |
4155 | case POSTDECREMENT_EXPR: | |
4156 | if (TREE_OPERAND (incr, 0) != iter) | |
4157 | { | |
4158 | incr = error_mark_node; | |
4159 | break; | |
4160 | } | |
4161 | iter_incr = build_x_unary_op (TREE_CODE (incr), iter, | |
4162 | tf_warning_or_error); | |
4163 | if (error_operand_p (iter_incr)) | |
4164 | return true; | |
4165 | else if (TREE_CODE (incr) == PREINCREMENT_EXPR | |
4166 | || TREE_CODE (incr) == POSTINCREMENT_EXPR) | |
4167 | incr = integer_one_node; | |
4168 | else | |
4169 | incr = integer_minus_one_node; | |
4170 | break; | |
4171 | case MODIFY_EXPR: | |
4172 | if (TREE_OPERAND (incr, 0) != iter) | |
4173 | incr = error_mark_node; | |
4174 | else if (TREE_CODE (TREE_OPERAND (incr, 1)) == PLUS_EXPR | |
4175 | || TREE_CODE (TREE_OPERAND (incr, 1)) == MINUS_EXPR) | |
4176 | { | |
4177 | tree rhs = TREE_OPERAND (incr, 1); | |
4178 | if (TREE_OPERAND (rhs, 0) == iter) | |
4179 | { | |
4180 | if (TREE_CODE (TREE_TYPE (TREE_OPERAND (rhs, 1))) | |
4181 | != INTEGER_TYPE) | |
4182 | incr = error_mark_node; | |
4183 | else | |
4184 | { | |
4185 | iter_incr = build_x_modify_expr (iter, TREE_CODE (rhs), | |
4186 | TREE_OPERAND (rhs, 1), | |
4187 | tf_warning_or_error); | |
4188 | if (error_operand_p (iter_incr)) | |
4189 | return true; | |
4190 | incr = TREE_OPERAND (rhs, 1); | |
4191 | incr = cp_convert (TREE_TYPE (diff), incr); | |
4192 | if (TREE_CODE (rhs) == MINUS_EXPR) | |
4193 | { | |
4194 | incr = build1 (NEGATE_EXPR, TREE_TYPE (diff), incr); | |
4195 | incr = fold_if_not_in_template (incr); | |
4196 | } | |
4197 | if (TREE_CODE (incr) != INTEGER_CST | |
4198 | && (TREE_CODE (incr) != NOP_EXPR | |
4199 | || (TREE_CODE (TREE_OPERAND (incr, 0)) | |
4200 | != INTEGER_CST))) | |
4201 | iter_incr = NULL; | |
4202 | } | |
4203 | } | |
4204 | else if (TREE_OPERAND (rhs, 1) == iter) | |
4205 | { | |
4206 | if (TREE_CODE (TREE_TYPE (TREE_OPERAND (rhs, 0))) != INTEGER_TYPE | |
4207 | || TREE_CODE (rhs) != PLUS_EXPR) | |
4208 | incr = error_mark_node; | |
4209 | else | |
4210 | { | |
4211 | iter_incr = build_x_binary_op (PLUS_EXPR, | |
4212 | TREE_OPERAND (rhs, 0), | |
4213 | ERROR_MARK, iter, | |
4214 | ERROR_MARK, NULL, | |
4215 | tf_warning_or_error); | |
4216 | if (error_operand_p (iter_incr)) | |
4217 | return true; | |
4218 | iter_incr = build_x_modify_expr (iter, NOP_EXPR, | |
4219 | iter_incr, | |
4220 | tf_warning_or_error); | |
4221 | if (error_operand_p (iter_incr)) | |
4222 | return true; | |
4223 | incr = TREE_OPERAND (rhs, 0); | |
4224 | iter_incr = NULL; | |
4225 | } | |
4226 | } | |
4227 | else | |
4228 | incr = error_mark_node; | |
4229 | } | |
4230 | else | |
4231 | incr = error_mark_node; | |
4232 | break; | |
4233 | default: | |
4234 | incr = error_mark_node; | |
4235 | break; | |
4236 | } | |
4237 | ||
4238 | if (incr == error_mark_node) | |
4239 | { | |
69bc6bff | 4240 | error_at (elocus, "invalid increment expression"); |
a68ab351 JJ |
4241 | return true; |
4242 | } | |
4243 | ||
4244 | incr = cp_convert (TREE_TYPE (diff), incr); | |
4245 | for (c = clauses; c ; c = OMP_CLAUSE_CHAIN (c)) | |
4246 | if (OMP_CLAUSE_CODE (c) == OMP_CLAUSE_LASTPRIVATE | |
4247 | && OMP_CLAUSE_DECL (c) == iter) | |
4248 | break; | |
4249 | ||
4250 | decl = create_temporary_var (TREE_TYPE (diff)); | |
4251 | pushdecl (decl); | |
4252 | add_decl_expr (decl); | |
4253 | last = create_temporary_var (TREE_TYPE (diff)); | |
4254 | pushdecl (last); | |
4255 | add_decl_expr (last); | |
4256 | if (c && iter_incr == NULL) | |
4257 | { | |
4258 | incr_var = create_temporary_var (TREE_TYPE (diff)); | |
4259 | pushdecl (incr_var); | |
4260 | add_decl_expr (incr_var); | |
4261 | } | |
4262 | gcc_assert (stmts_are_full_exprs_p ()); | |
4263 | ||
4264 | orig_pre_body = *pre_body; | |
4265 | *pre_body = push_stmt_list (); | |
4266 | if (orig_pre_body) | |
4267 | add_stmt (orig_pre_body); | |
4268 | if (init != NULL) | |
4269 | finish_expr_stmt (build_x_modify_expr (iter, NOP_EXPR, init, | |
4270 | tf_warning_or_error)); | |
4271 | init = build_int_cst (TREE_TYPE (diff), 0); | |
4272 | if (c && iter_incr == NULL) | |
4273 | { | |
4274 | finish_expr_stmt (build_x_modify_expr (incr_var, NOP_EXPR, | |
4275 | incr, tf_warning_or_error)); | |
4276 | incr = incr_var; | |
4277 | iter_incr = build_x_modify_expr (iter, PLUS_EXPR, incr, | |
4278 | tf_warning_or_error); | |
4279 | } | |
4280 | finish_expr_stmt (build_x_modify_expr (last, NOP_EXPR, init, | |
4281 | tf_warning_or_error)); | |
4282 | *pre_body = pop_stmt_list (*pre_body); | |
4283 | ||
ba47d38d AH |
4284 | cond = cp_build_binary_op (elocus, |
4285 | TREE_CODE (cond), decl, diff, | |
a68ab351 | 4286 | tf_warning_or_error); |
32e8bb8e | 4287 | incr = build_modify_expr (elocus, decl, NULL_TREE, PLUS_EXPR, |
c2255bc4 | 4288 | elocus, incr, NULL_TREE); |
a68ab351 JJ |
4289 | |
4290 | orig_body = *body; | |
4291 | *body = push_stmt_list (); | |
4292 | iter_init = build2 (MINUS_EXPR, TREE_TYPE (diff), decl, last); | |
4293 | iter_init = build_x_modify_expr (iter, PLUS_EXPR, iter_init, | |
4294 | tf_warning_or_error); | |
4295 | iter_init = build1 (NOP_EXPR, void_type_node, iter_init); | |
4296 | finish_expr_stmt (iter_init); | |
4297 | finish_expr_stmt (build_x_modify_expr (last, NOP_EXPR, decl, | |
4298 | tf_warning_or_error)); | |
4299 | add_stmt (orig_body); | |
4300 | *body = pop_stmt_list (*body); | |
4301 | ||
4302 | if (c) | |
4303 | { | |
4304 | OMP_CLAUSE_LASTPRIVATE_STMT (c) = push_stmt_list (); | |
4305 | finish_expr_stmt (iter_incr); | |
4306 | OMP_CLAUSE_LASTPRIVATE_STMT (c) | |
4307 | = pop_stmt_list (OMP_CLAUSE_LASTPRIVATE_STMT (c)); | |
4308 | } | |
4309 | ||
4310 | TREE_VEC_ELT (declv, i) = decl; | |
4311 | TREE_VEC_ELT (initv, i) = init; | |
4312 | TREE_VEC_ELT (condv, i) = cond; | |
4313 | TREE_VEC_ELT (incrv, i) = incr; | |
4314 | ||
4315 | return false; | |
4316 | } | |
4317 | ||
1799e5d5 RH |
4318 | /* Build and validate an OMP_FOR statement. CLAUSES, BODY, COND, INCR |
4319 | are directly for their associated operands in the statement. DECL | |
4320 | and INIT are a combo; if DECL is NULL then INIT ought to be a | |
4321 | MODIFY_EXPR, and the DECL should be extracted. PRE_BODY are | |
4322 | optional statements that need to go before the loop into its | |
4323 | sk_omp scope. */ | |
4324 | ||
4325 | tree | |
a68ab351 JJ |
4326 | finish_omp_for (location_t locus, tree declv, tree initv, tree condv, |
4327 | tree incrv, tree body, tree pre_body, tree clauses) | |
4328 | { | |
4329 | tree omp_for = NULL, orig_incr = NULL; | |
4330 | tree decl, init, cond, incr; | |
4331 | location_t elocus; | |
4332 | int i; | |
4333 | ||
4334 | gcc_assert (TREE_VEC_LENGTH (declv) == TREE_VEC_LENGTH (initv)); | |
4335 | gcc_assert (TREE_VEC_LENGTH (declv) == TREE_VEC_LENGTH (condv)); | |
4336 | gcc_assert (TREE_VEC_LENGTH (declv) == TREE_VEC_LENGTH (incrv)); | |
4337 | for (i = 0; i < TREE_VEC_LENGTH (declv); i++) | |
4338 | { | |
4339 | decl = TREE_VEC_ELT (declv, i); | |
4340 | init = TREE_VEC_ELT (initv, i); | |
4341 | cond = TREE_VEC_ELT (condv, i); | |
4342 | incr = TREE_VEC_ELT (incrv, i); | |
4343 | elocus = locus; | |
4344 | ||
4345 | if (decl == NULL) | |
4346 | { | |
4347 | if (init != NULL) | |
4348 | switch (TREE_CODE (init)) | |
1799e5d5 | 4349 | { |
a68ab351 | 4350 | case MODIFY_EXPR: |
1799e5d5 | 4351 | decl = TREE_OPERAND (init, 0); |
a68ab351 JJ |
4352 | init = TREE_OPERAND (init, 1); |
4353 | break; | |
4354 | case MODOP_EXPR: | |
4355 | if (TREE_CODE (TREE_OPERAND (init, 1)) == NOP_EXPR) | |
4356 | { | |
4357 | decl = TREE_OPERAND (init, 0); | |
4358 | init = TREE_OPERAND (init, 2); | |
4359 | } | |
4360 | break; | |
4361 | default: | |
4362 | break; | |
1799e5d5 | 4363 | } |
1799e5d5 | 4364 | |
a68ab351 JJ |
4365 | if (decl == NULL) |
4366 | { | |
69bc6bff MLI |
4367 | error_at (locus, |
4368 | "expected iteration declaration or initialization"); | |
a68ab351 JJ |
4369 | return NULL; |
4370 | } | |
1799e5d5 | 4371 | } |
1799e5d5 | 4372 | |
a68ab351 JJ |
4373 | if (init && EXPR_HAS_LOCATION (init)) |
4374 | elocus = EXPR_LOCATION (init); | |
1799e5d5 RH |
4375 | |
4376 | if (cond == NULL) | |
4377 | { | |
69bc6bff | 4378 | error_at (elocus, "missing controlling predicate"); |
1799e5d5 RH |
4379 | return NULL; |
4380 | } | |
4381 | ||
4382 | if (incr == NULL) | |
4383 | { | |
69bc6bff | 4384 | error_at (elocus, "missing increment expression"); |
1799e5d5 RH |
4385 | return NULL; |
4386 | } | |
4387 | ||
a68ab351 JJ |
4388 | TREE_VEC_ELT (declv, i) = decl; |
4389 | TREE_VEC_ELT (initv, i) = init; | |
4390 | } | |
4391 | ||
4392 | if (dependent_omp_for_p (declv, initv, condv, incrv)) | |
4393 | { | |
4394 | tree stmt; | |
4395 | ||
1799e5d5 RH |
4396 | stmt = make_node (OMP_FOR); |
4397 | ||
a68ab351 JJ |
4398 | for (i = 0; i < TREE_VEC_LENGTH (declv); i++) |
4399 | { | |
4400 | /* This is really just a place-holder. We'll be decomposing this | |
4401 | again and going through the cp_build_modify_expr path below when | |
4402 | we instantiate the thing. */ | |
4403 | TREE_VEC_ELT (initv, i) | |
4404 | = build2 (MODIFY_EXPR, void_type_node, TREE_VEC_ELT (declv, i), | |
4405 | TREE_VEC_ELT (initv, i)); | |
4406 | } | |
1799e5d5 RH |
4407 | |
4408 | TREE_TYPE (stmt) = void_type_node; | |
a68ab351 JJ |
4409 | OMP_FOR_INIT (stmt) = initv; |
4410 | OMP_FOR_COND (stmt) = condv; | |
4411 | OMP_FOR_INCR (stmt) = incrv; | |
1799e5d5 RH |
4412 | OMP_FOR_BODY (stmt) = body; |
4413 | OMP_FOR_PRE_BODY (stmt) = pre_body; | |
a68ab351 | 4414 | OMP_FOR_CLAUSES (stmt) = clauses; |
1799e5d5 RH |
4415 | |
4416 | SET_EXPR_LOCATION (stmt, locus); | |
4417 | return add_stmt (stmt); | |
4418 | } | |
4419 | ||
a68ab351 JJ |
4420 | if (processing_template_decl) |
4421 | orig_incr = make_tree_vec (TREE_VEC_LENGTH (incrv)); | |
1799e5d5 | 4422 | |
a68ab351 | 4423 | for (i = 0; i < TREE_VEC_LENGTH (declv); ) |
dadb19e0 | 4424 | { |
a68ab351 JJ |
4425 | decl = TREE_VEC_ELT (declv, i); |
4426 | init = TREE_VEC_ELT (initv, i); | |
4427 | cond = TREE_VEC_ELT (condv, i); | |
4428 | incr = TREE_VEC_ELT (incrv, i); | |
4429 | if (orig_incr) | |
4430 | TREE_VEC_ELT (orig_incr, i) = incr; | |
4431 | elocus = locus; | |
4432 | ||
4433 | if (init && EXPR_HAS_LOCATION (init)) | |
dadb19e0 | 4434 | elocus = EXPR_LOCATION (init); |
dadb19e0 | 4435 | |
a68ab351 JJ |
4436 | if (!DECL_P (decl)) |
4437 | { | |
69bc6bff | 4438 | error_at (elocus, "expected iteration declaration or initialization"); |
a68ab351 JJ |
4439 | return NULL; |
4440 | } | |
969c111d | 4441 | |
a68ab351 JJ |
4442 | if (incr && TREE_CODE (incr) == MODOP_EXPR) |
4443 | { | |
4444 | if (orig_incr) | |
4445 | TREE_VEC_ELT (orig_incr, i) = incr; | |
4446 | incr = cp_build_modify_expr (TREE_OPERAND (incr, 0), | |
4447 | TREE_CODE (TREE_OPERAND (incr, 1)), | |
4448 | TREE_OPERAND (incr, 2), | |
4449 | tf_warning_or_error); | |
4450 | } | |
4451 | ||
4452 | if (CLASS_TYPE_P (TREE_TYPE (decl))) | |
4453 | { | |
4454 | if (handle_omp_for_class_iterator (i, locus, declv, initv, condv, | |
4455 | incrv, &body, &pre_body, clauses)) | |
4456 | return NULL; | |
4457 | continue; | |
4458 | } | |
4459 | ||
4460 | if (!INTEGRAL_TYPE_P (TREE_TYPE (decl)) | |
4461 | && TREE_CODE (TREE_TYPE (decl)) != POINTER_TYPE) | |
4462 | { | |
69bc6bff | 4463 | error_at (elocus, "invalid type for iteration variable %qE", decl); |
a68ab351 JJ |
4464 | return NULL; |
4465 | } | |
969c111d | 4466 | |
b2ebd268 | 4467 | if (!processing_template_decl) |
8569b2d0 JJ |
4468 | { |
4469 | init = fold_build_cleanup_point_expr (TREE_TYPE (init), init); | |
4470 | init = cp_build_modify_expr (decl, NOP_EXPR, init, tf_warning_or_error); | |
4471 | } | |
4472 | else | |
4473 | init = build2 (MODIFY_EXPR, void_type_node, decl, init); | |
e4ebaef3 JJ |
4474 | if (cond |
4475 | && TREE_SIDE_EFFECTS (cond) | |
4476 | && COMPARISON_CLASS_P (cond) | |
4477 | && !processing_template_decl) | |
a68ab351 | 4478 | { |
e4ebaef3 JJ |
4479 | tree t = TREE_OPERAND (cond, 0); |
4480 | if (TREE_SIDE_EFFECTS (t) | |
4481 | && t != decl | |
4482 | && (TREE_CODE (t) != NOP_EXPR | |
4483 | || TREE_OPERAND (t, 0) != decl)) | |
4484 | TREE_OPERAND (cond, 0) | |
4485 | = fold_build_cleanup_point_expr (TREE_TYPE (t), t); | |
a68ab351 | 4486 | |
e4ebaef3 JJ |
4487 | t = TREE_OPERAND (cond, 1); |
4488 | if (TREE_SIDE_EFFECTS (t) | |
4489 | && t != decl | |
4490 | && (TREE_CODE (t) != NOP_EXPR | |
4491 | || TREE_OPERAND (t, 0) != decl)) | |
4492 | TREE_OPERAND (cond, 1) | |
a68ab351 JJ |
4493 | = fold_build_cleanup_point_expr (TREE_TYPE (t), t); |
4494 | } | |
4495 | if (decl == error_mark_node || init == error_mark_node) | |
4496 | return NULL; | |
4497 | ||
4498 | TREE_VEC_ELT (declv, i) = decl; | |
4499 | TREE_VEC_ELT (initv, i) = init; | |
4500 | TREE_VEC_ELT (condv, i) = cond; | |
4501 | TREE_VEC_ELT (incrv, i) = incr; | |
4502 | i++; | |
969c111d | 4503 | } |
a68ab351 JJ |
4504 | |
4505 | if (IS_EMPTY_STMT (pre_body)) | |
4506 | pre_body = NULL; | |
4507 | ||
4508 | omp_for = c_finish_omp_for (locus, declv, initv, condv, incrv, | |
4509 | body, pre_body); | |
4510 | ||
4511 | if (omp_for == NULL) | |
4512 | return NULL; | |
4513 | ||
4514 | for (i = 0; i < TREE_VEC_LENGTH (OMP_FOR_INCR (omp_for)); i++) | |
969c111d | 4515 | { |
e4ebaef3 JJ |
4516 | decl = TREE_OPERAND (TREE_VEC_ELT (OMP_FOR_INIT (omp_for), i), 0); |
4517 | incr = TREE_VEC_ELT (OMP_FOR_INCR (omp_for), i); | |
969c111d | 4518 | |
a68ab351 JJ |
4519 | if (TREE_CODE (incr) != MODIFY_EXPR) |
4520 | continue; | |
4521 | ||
4522 | if (TREE_SIDE_EFFECTS (TREE_OPERAND (incr, 1)) | |
e4ebaef3 JJ |
4523 | && BINARY_CLASS_P (TREE_OPERAND (incr, 1)) |
4524 | && !processing_template_decl) | |
a68ab351 | 4525 | { |
e4ebaef3 JJ |
4526 | tree t = TREE_OPERAND (TREE_OPERAND (incr, 1), 0); |
4527 | if (TREE_SIDE_EFFECTS (t) | |
4528 | && t != decl | |
4529 | && (TREE_CODE (t) != NOP_EXPR | |
4530 | || TREE_OPERAND (t, 0) != decl)) | |
4531 | TREE_OPERAND (TREE_OPERAND (incr, 1), 0) | |
4532 | = fold_build_cleanup_point_expr (TREE_TYPE (t), t); | |
a68ab351 | 4533 | |
e4ebaef3 JJ |
4534 | t = TREE_OPERAND (TREE_OPERAND (incr, 1), 1); |
4535 | if (TREE_SIDE_EFFECTS (t) | |
4536 | && t != decl | |
4537 | && (TREE_CODE (t) != NOP_EXPR | |
4538 | || TREE_OPERAND (t, 0) != decl)) | |
4539 | TREE_OPERAND (TREE_OPERAND (incr, 1), 1) | |
4540 | = fold_build_cleanup_point_expr (TREE_TYPE (t), t); | |
a68ab351 JJ |
4541 | } |
4542 | ||
4543 | if (orig_incr) | |
4544 | TREE_VEC_ELT (OMP_FOR_INCR (omp_for), i) = TREE_VEC_ELT (orig_incr, i); | |
969c111d | 4545 | } |
a68ab351 JJ |
4546 | if (omp_for != NULL) |
4547 | OMP_FOR_CLAUSES (omp_for) = clauses; | |
969c111d | 4548 | return omp_for; |
1799e5d5 RH |
4549 | } |
4550 | ||
4551 | void | |
4552 | finish_omp_atomic (enum tree_code code, tree lhs, tree rhs) | |
4553 | { | |
239371f9 JJ |
4554 | tree orig_lhs; |
4555 | tree orig_rhs; | |
4556 | bool dependent_p; | |
e6bd5565 MM |
4557 | tree stmt; |
4558 | ||
239371f9 JJ |
4559 | orig_lhs = lhs; |
4560 | orig_rhs = rhs; | |
4561 | dependent_p = false; | |
4562 | stmt = NULL_TREE; | |
4563 | ||
4564 | /* Even in a template, we can detect invalid uses of the atomic | |
4565 | pragma if neither LHS nor RHS is type-dependent. */ | |
4566 | if (processing_template_decl) | |
e6bd5565 | 4567 | { |
239371f9 JJ |
4568 | dependent_p = (type_dependent_expression_p (lhs) |
4569 | || type_dependent_expression_p (rhs)); | |
4570 | if (!dependent_p) | |
e6bd5565 MM |
4571 | { |
4572 | lhs = build_non_dependent_expr (lhs); | |
4573 | rhs = build_non_dependent_expr (rhs); | |
4574 | } | |
239371f9 JJ |
4575 | } |
4576 | if (!dependent_p) | |
4577 | { | |
c2255bc4 | 4578 | stmt = c_finish_omp_atomic (input_location, code, lhs, rhs); |
239371f9 JJ |
4579 | if (stmt == error_mark_node) |
4580 | return; | |
e6bd5565 | 4581 | } |
239371f9 JJ |
4582 | if (processing_template_decl) |
4583 | stmt = build2 (OMP_ATOMIC, void_type_node, integer_zero_node, | |
4584 | build2 (code, void_type_node, orig_lhs, orig_rhs)); | |
4585 | add_stmt (stmt); | |
1799e5d5 RH |
4586 | } |
4587 | ||
4588 | void | |
4589 | finish_omp_barrier (void) | |
4590 | { | |
4591 | tree fn = built_in_decls[BUILT_IN_GOMP_BARRIER]; | |
c166b898 ILT |
4592 | VEC(tree,gc) *vec = make_tree_vector (); |
4593 | tree stmt = finish_call_expr (fn, &vec, false, false, tf_warning_or_error); | |
4594 | release_tree_vector (vec); | |
1799e5d5 RH |
4595 | finish_expr_stmt (stmt); |
4596 | } | |
4597 | ||
4598 | void | |
4599 | finish_omp_flush (void) | |
4600 | { | |
4601 | tree fn = built_in_decls[BUILT_IN_SYNCHRONIZE]; | |
c166b898 ILT |
4602 | VEC(tree,gc) *vec = make_tree_vector (); |
4603 | tree stmt = finish_call_expr (fn, &vec, false, false, tf_warning_or_error); | |
4604 | release_tree_vector (vec); | |
1799e5d5 RH |
4605 | finish_expr_stmt (stmt); |
4606 | } | |
4607 | ||
a68ab351 JJ |
4608 | void |
4609 | finish_omp_taskwait (void) | |
1799e5d5 | 4610 | { |
a68ab351 | 4611 | tree fn = built_in_decls[BUILT_IN_GOMP_TASKWAIT]; |
c166b898 ILT |
4612 | VEC(tree,gc) *vec = make_tree_vector (); |
4613 | tree stmt = finish_call_expr (fn, &vec, false, false, tf_warning_or_error); | |
4614 | release_tree_vector (vec); | |
a68ab351 | 4615 | finish_expr_stmt (stmt); |
1799e5d5 RH |
4616 | } |
4617 | \f | |
54f7877c | 4618 | void |
3a978d72 | 4619 | init_cp_semantics (void) |
54f7877c | 4620 | { |
54f7877c | 4621 | } |
55a3debe DG |
4622 | \f |
4623 | /* Build a STATIC_ASSERT for a static assertion with the condition | |
4624 | CONDITION and the message text MESSAGE. LOCATION is the location | |
4625 | of the static assertion in the source code. When MEMBER_P, this | |
4626 | static assertion is a member of a class. */ | |
4627 | void | |
4628 | finish_static_assert (tree condition, tree message, location_t location, | |
4629 | bool member_p) | |
4630 | { | |
7b3e2d46 DG |
4631 | if (check_for_bare_parameter_packs (condition)) |
4632 | condition = error_mark_node; | |
4633 | ||
55a3debe DG |
4634 | if (type_dependent_expression_p (condition) |
4635 | || value_dependent_expression_p (condition)) | |
4636 | { | |
4637 | /* We're in a template; build a STATIC_ASSERT and put it in | |
4638 | the right place. */ | |
4639 | tree assertion; | |
4640 | ||
4641 | assertion = make_node (STATIC_ASSERT); | |
4642 | STATIC_ASSERT_CONDITION (assertion) = condition; | |
4643 | STATIC_ASSERT_MESSAGE (assertion) = message; | |
4644 | STATIC_ASSERT_SOURCE_LOCATION (assertion) = location; | |
4645 | ||
4646 | if (member_p) | |
4647 | maybe_add_class_template_decl_list (current_class_type, | |
4648 | assertion, | |
4649 | /*friend_p=*/0); | |
4650 | else | |
4651 | add_stmt (assertion); | |
4652 | ||
4653 | return; | |
4654 | } | |
4655 | ||
4656 | /* Fold the expression and convert it to a boolean value. */ | |
4657 | condition = fold_non_dependent_expr (condition); | |
4658 | condition = cp_convert (boolean_type_node, condition); | |
4659 | ||
4660 | if (TREE_CODE (condition) == INTEGER_CST && !integer_zerop (condition)) | |
4661 | /* Do nothing; the condition is satisfied. */ | |
4662 | ; | |
4663 | else | |
4664 | { | |
4665 | location_t saved_loc = input_location; | |
4666 | ||
4667 | input_location = location; | |
4668 | if (TREE_CODE (condition) == INTEGER_CST | |
4669 | && integer_zerop (condition)) | |
4670 | /* Report the error. */ | |
4671 | error ("static assertion failed: %E", message); | |
4672 | else if (condition && condition != error_mark_node) | |
4673 | error ("non-constant condition for static assertion"); | |
4674 | input_location = saved_loc; | |
4675 | } | |
4676 | } | |
3ad6a8e1 | 4677 | \f |
4b4a42c4 JM |
4678 | /* Returns the type of EXPR for cases where we can determine it even though |
4679 | EXPR is a type-dependent expression. */ | |
a77f94e2 JM |
4680 | |
4681 | tree | |
4682 | describable_type (tree expr) | |
4683 | { | |
4684 | tree type = NULL_TREE; | |
4685 | ||
a77f94e2 JM |
4686 | if (! type_dependent_expression_p (expr) |
4687 | && ! type_unknown_p (expr)) | |
4688 | { | |
aef8bce8 | 4689 | type = unlowered_expr_type (expr); |
a77f94e2 JM |
4690 | if (real_lvalue_p (expr)) |
4691 | type = build_reference_type (type); | |
4692 | } | |
a77f94e2 JM |
4693 | |
4694 | if (type) | |
4695 | return type; | |
4696 | ||
4697 | switch (TREE_CODE (expr)) | |
4698 | { | |
4699 | case VAR_DECL: | |
4700 | case PARM_DECL: | |
4701 | case RESULT_DECL: | |
4702 | case FUNCTION_DECL: | |
4b4a42c4 | 4703 | return TREE_TYPE (expr); |
a77f94e2 JM |
4704 | break; |
4705 | ||
4706 | case NEW_EXPR: | |
4707 | case CONST_DECL: | |
4708 | case TEMPLATE_PARM_INDEX: | |
4709 | case CAST_EXPR: | |
4710 | case STATIC_CAST_EXPR: | |
4711 | case REINTERPRET_CAST_EXPR: | |
4712 | case CONST_CAST_EXPR: | |
4713 | case DYNAMIC_CAST_EXPR: | |
4714 | type = TREE_TYPE (expr); | |
4715 | break; | |
4716 | ||
4717 | case INDIRECT_REF: | |
4718 | { | |
4719 | tree ptrtype = describable_type (TREE_OPERAND (expr, 0)); | |
4720 | if (ptrtype && POINTER_TYPE_P (ptrtype)) | |
4721 | type = build_reference_type (TREE_TYPE (ptrtype)); | |
4722 | } | |
4723 | break; | |
4724 | ||
4725 | default: | |
4726 | if (TREE_CODE_CLASS (TREE_CODE (expr)) == tcc_constant) | |
4727 | type = TREE_TYPE (expr); | |
4728 | break; | |
4729 | } | |
4730 | ||
4731 | if (type && type_uses_auto (type)) | |
4732 | return NULL_TREE; | |
4733 | else | |
4734 | return type; | |
4735 | } | |
4736 | ||
3ad6a8e1 DG |
4737 | /* Implements the C++0x decltype keyword. Returns the type of EXPR, |
4738 | suitable for use as a type-specifier. | |
4739 | ||
4740 | ID_EXPRESSION_OR_MEMBER_ACCESS_P is true when EXPR was parsed as an | |
4741 | id-expression or a class member access, FALSE when it was parsed as | |
4742 | a full expression. */ | |
a77f94e2 | 4743 | |
3ad6a8e1 DG |
4744 | tree |
4745 | finish_decltype_type (tree expr, bool id_expression_or_member_access_p) | |
4746 | { | |
4747 | tree orig_expr = expr; | |
056dd1af | 4748 | tree type = NULL_TREE; |
3ad6a8e1 | 4749 | |
e4fd5b87 DG |
4750 | if (!expr || error_operand_p (expr)) |
4751 | return error_mark_node; | |
4752 | ||
7a547b93 JJ |
4753 | if (TYPE_P (expr) |
4754 | || TREE_CODE (expr) == TYPE_DECL | |
4755 | || (TREE_CODE (expr) == BIT_NOT_EXPR | |
4756 | && TYPE_P (TREE_OPERAND (expr, 0)))) | |
4757 | { | |
4758 | error ("argument to decltype must be an expression"); | |
4759 | return error_mark_node; | |
4760 | } | |
4761 | ||
21920fd1 JM |
4762 | if (type_dependent_expression_p (expr) |
4763 | /* In a template, a COMPONENT_REF has an IDENTIFIER_NODE for op1 even | |
4764 | if it isn't dependent, so that we can check access control at | |
4765 | instantiation time, so defer the decltype as well (PR 42277). */ | |
4766 | || (id_expression_or_member_access_p | |
4767 | && processing_template_decl | |
4768 | && TREE_CODE (expr) == COMPONENT_REF)) | |
3ad6a8e1 | 4769 | { |
a77f94e2 JM |
4770 | if (id_expression_or_member_access_p) |
4771 | { | |
4772 | switch (TREE_CODE (expr)) | |
4773 | { | |
4774 | case VAR_DECL: | |
4775 | case PARM_DECL: | |
4776 | case RESULT_DECL: | |
4777 | case FUNCTION_DECL: | |
4778 | case CONST_DECL: | |
4779 | case TEMPLATE_PARM_INDEX: | |
4780 | type = TREE_TYPE (expr); | |
4781 | break; | |
4782 | ||
4783 | default: | |
4784 | break; | |
4785 | } | |
4786 | } | |
a77f94e2 JM |
4787 | |
4788 | if (type && !type_uses_auto (type)) | |
4789 | return type; | |
4790 | ||
d1c05c88 | 4791 | treat_as_dependent: |
9e1e64ec | 4792 | type = cxx_make_type (DECLTYPE_TYPE); |
3ad6a8e1 DG |
4793 | DECLTYPE_TYPE_EXPR (type) = expr; |
4794 | DECLTYPE_TYPE_ID_EXPR_OR_MEMBER_ACCESS_P (type) | |
4795 | = id_expression_or_member_access_p; | |
4796 | SET_TYPE_STRUCTURAL_EQUALITY (type); | |
4797 | ||
4798 | return type; | |
4799 | } | |
4800 | ||
4801 | /* The type denoted by decltype(e) is defined as follows: */ | |
4802 | ||
ccb05613 | 4803 | expr = resolve_nondeduced_context (expr); |
48326487 JM |
4804 | |
4805 | /* To get the size of a static data member declared as an array of | |
4806 | unknown bound, we need to instantiate it. */ | |
4807 | if (TREE_CODE (expr) == VAR_DECL | |
4808 | && VAR_HAD_UNKNOWN_BOUND (expr) | |
4809 | && DECL_TEMPLATE_INSTANTIATION (expr)) | |
4810 | instantiate_decl (expr, /*defer_ok*/true, /*expl_inst_mem*/false); | |
4811 | ||
3ad6a8e1 DG |
4812 | if (id_expression_or_member_access_p) |
4813 | { | |
4814 | /* If e is an id-expression or a class member access (5.2.5 | |
4815 | [expr.ref]), decltype(e) is defined as the type of the entity | |
4816 | named by e. If there is no such entity, or e names a set of | |
4817 | overloaded functions, the program is ill-formed. */ | |
4818 | if (TREE_CODE (expr) == IDENTIFIER_NODE) | |
4819 | expr = lookup_name (expr); | |
4820 | ||
4821 | if (TREE_CODE (expr) == INDIRECT_REF) | |
4822 | /* This can happen when the expression is, e.g., "a.b". Just | |
4823 | look at the underlying operand. */ | |
4824 | expr = TREE_OPERAND (expr, 0); | |
4825 | ||
4826 | if (TREE_CODE (expr) == OFFSET_REF | |
4827 | || TREE_CODE (expr) == MEMBER_REF) | |
4828 | /* We're only interested in the field itself. If it is a | |
4829 | BASELINK, we will need to see through it in the next | |
4830 | step. */ | |
4831 | expr = TREE_OPERAND (expr, 1); | |
4832 | ||
4833 | if (TREE_CODE (expr) == BASELINK) | |
4834 | /* See through BASELINK nodes to the underlying functions. */ | |
4835 | expr = BASELINK_FUNCTIONS (expr); | |
4836 | ||
ccb05613 JM |
4837 | if (TREE_CODE (expr) == TEMPLATE_ID_EXPR) |
4838 | expr = TREE_OPERAND (expr, 0); | |
4839 | ||
3ad6a8e1 DG |
4840 | if (TREE_CODE (expr) == OVERLOAD) |
4841 | { | |
ccb05613 JM |
4842 | if (OVL_CHAIN (expr) |
4843 | || TREE_CODE (OVL_FUNCTION (expr)) == TEMPLATE_DECL) | |
3ad6a8e1 DG |
4844 | { |
4845 | error ("%qE refers to a set of overloaded functions", orig_expr); | |
4846 | return error_mark_node; | |
4847 | } | |
4848 | else | |
4849 | /* An overload set containing only one function: just look | |
4850 | at that function. */ | |
4851 | expr = OVL_FUNCTION (expr); | |
4852 | } | |
4853 | ||
4854 | switch (TREE_CODE (expr)) | |
4855 | { | |
4856 | case FIELD_DECL: | |
e76d7cc7 | 4857 | if (DECL_BIT_FIELD_TYPE (expr)) |
3ad6a8e1 DG |
4858 | { |
4859 | type = DECL_BIT_FIELD_TYPE (expr); | |
4860 | break; | |
4861 | } | |
4862 | /* Fall through for fields that aren't bitfields. */ | |
4863 | ||
4864 | case FUNCTION_DECL: | |
4865 | case VAR_DECL: | |
4866 | case CONST_DECL: | |
4867 | case PARM_DECL: | |
4868 | case RESULT_DECL: | |
088d4f95 | 4869 | case TEMPLATE_PARM_INDEX: |
03a904b5 | 4870 | expr = mark_type_use (expr); |
3ad6a8e1 DG |
4871 | type = TREE_TYPE (expr); |
4872 | break; | |
4873 | ||
4874 | case ERROR_MARK: | |
4875 | type = error_mark_node; | |
4876 | break; | |
4877 | ||
4878 | case COMPONENT_REF: | |
03a904b5 | 4879 | mark_type_use (expr); |
3ad6a8e1 DG |
4880 | type = is_bitfield_expr_with_lowered_type (expr); |
4881 | if (!type) | |
4882 | type = TREE_TYPE (TREE_OPERAND (expr, 1)); | |
4883 | break; | |
4884 | ||
4885 | case BIT_FIELD_REF: | |
4886 | gcc_unreachable (); | |
4887 | ||
4888 | case INTEGER_CST: | |
4889 | /* We can get here when the id-expression refers to an | |
4890 | enumerator. */ | |
4891 | type = TREE_TYPE (expr); | |
4892 | break; | |
4893 | ||
4894 | default: | |
91929b4d JJ |
4895 | gcc_assert (TYPE_P (expr) || DECL_P (expr) |
4896 | || TREE_CODE (expr) == SCOPE_REF); | |
3ad6a8e1 DG |
4897 | error ("argument to decltype must be an expression"); |
4898 | return error_mark_node; | |
4899 | } | |
4900 | } | |
4901 | else | |
4902 | { | |
e4fd5b87 DG |
4903 | /* Expressions of reference type are sometimes wrapped in |
4904 | INDIRECT_REFs. INDIRECT_REFs are just internal compiler | |
4905 | representation, not part of the language, so we have to look | |
4906 | through them. */ | |
4907 | if (TREE_CODE (expr) == INDIRECT_REF | |
4908 | && TREE_CODE (TREE_TYPE (TREE_OPERAND (expr, 0))) | |
4909 | == REFERENCE_TYPE) | |
4910 | expr = TREE_OPERAND (expr, 0); | |
4911 | ||
ed85a1f6 DG |
4912 | if (TREE_CODE (expr) == CALL_EXPR) |
4913 | { | |
4914 | /* If e is a function call (5.2.2 [expr.call]) or an | |
3ad6a8e1 DG |
4915 | invocation of an overloaded operator (parentheses around e |
4916 | are ignored), decltype(e) is defined as the return type of | |
4917 | that function. */ | |
ed85a1f6 DG |
4918 | tree fndecl = get_callee_fndecl (expr); |
4919 | if (fndecl && fndecl != error_mark_node) | |
4920 | type = TREE_TYPE (TREE_TYPE (fndecl)); | |
4921 | else | |
4922 | { | |
4923 | tree target_type = TREE_TYPE (CALL_EXPR_FN (expr)); | |
4924 | if ((TREE_CODE (target_type) == REFERENCE_TYPE | |
4925 | || TREE_CODE (target_type) == POINTER_TYPE) | |
4926 | && (TREE_CODE (TREE_TYPE (target_type)) == FUNCTION_TYPE | |
4927 | || TREE_CODE (TREE_TYPE (target_type)) == METHOD_TYPE)) | |
4928 | type = TREE_TYPE (TREE_TYPE (target_type)); | |
d1c05c88 JM |
4929 | else if (processing_template_decl) |
4930 | /* Within a template finish_call_expr doesn't resolve | |
4931 | CALL_EXPR_FN, so even though this decltype isn't really | |
4932 | dependent let's defer resolving it. */ | |
4933 | goto treat_as_dependent; | |
ed85a1f6 DG |
4934 | else |
4935 | sorry ("unable to determine the declared type of expression %<%E%>", | |
4936 | expr); | |
4937 | } | |
4938 | } | |
3ad6a8e1 DG |
4939 | else |
4940 | { | |
4941 | type = is_bitfield_expr_with_lowered_type (expr); | |
4942 | if (type) | |
4943 | { | |
4944 | /* Bitfields are special, because their type encodes the | |
4945 | number of bits they store. If the expression referenced a | |
4946 | bitfield, TYPE now has the declared type of that | |
4947 | bitfield. */ | |
4948 | type = cp_build_qualified_type (type, | |
4949 | cp_type_quals (TREE_TYPE (expr))); | |
4950 | ||
4951 | if (real_lvalue_p (expr)) | |
4952 | type = build_reference_type (type); | |
4953 | } | |
d5f4eddd JM |
4954 | /* Within a lambda-expression: |
4955 | ||
4956 | Every occurrence of decltype((x)) where x is a possibly | |
4957 | parenthesized id-expression that names an entity of | |
4958 | automatic storage duration is treated as if x were | |
4959 | transformed into an access to a corresponding data member | |
4960 | of the closure type that would have been declared if x | |
4961 | were a use of the denoted entity. */ | |
4962 | else if (outer_automatic_var_p (expr) | |
4963 | && current_function_decl | |
4964 | && LAMBDA_FUNCTION_P (current_function_decl)) | |
4965 | type = capture_decltype (expr); | |
3ad6a8e1 DG |
4966 | else |
4967 | { | |
4968 | /* Otherwise, where T is the type of e, if e is an lvalue, | |
4969 | decltype(e) is defined as T&, otherwise decltype(e) is | |
4970 | defined as T. */ | |
4971 | type = TREE_TYPE (expr); | |
e4fd5b87 DG |
4972 | if (type == error_mark_node) |
4973 | return error_mark_node; | |
4974 | else if (expr == current_class_ptr) | |
3ad6a8e1 DG |
4975 | /* If the expression is just "this", we want the |
4976 | cv-unqualified pointer for the "this" type. */ | |
4977 | type = TYPE_MAIN_VARIANT (type); | |
4978 | else if (real_lvalue_p (expr)) | |
4979 | { | |
4980 | if (TREE_CODE (type) != REFERENCE_TYPE) | |
4981 | type = build_reference_type (type); | |
4982 | } | |
4983 | else | |
4984 | type = non_reference (type); | |
4985 | } | |
4986 | } | |
4987 | } | |
4988 | ||
4989 | if (!type || type == unknown_type_node) | |
4990 | { | |
4991 | error ("type of %qE is unknown", expr); | |
4992 | return error_mark_node; | |
4993 | } | |
4994 | ||
4995 | return type; | |
4996 | } | |
cf22909c | 4997 | |
b29441ec PC |
4998 | /* Called from trait_expr_value to evaluate either __has_nothrow_assign or |
4999 | __has_nothrow_copy, depending on assign_p. */ | |
cb68ec50 PC |
5000 | |
5001 | static bool | |
b29441ec | 5002 | classtype_has_nothrow_assign_or_copy_p (tree type, bool assign_p) |
cb68ec50 | 5003 | { |
b29441ec | 5004 | tree fns; |
cb68ec50 | 5005 | |
b29441ec PC |
5006 | if (assign_p) |
5007 | { | |
5008 | int ix; | |
5009 | ix = lookup_fnfields_1 (type, ansi_assopname (NOP_EXPR)); | |
5010 | if (ix < 0) | |
cb68ec50 | 5011 | return false; |
b29441ec PC |
5012 | fns = VEC_index (tree, CLASSTYPE_METHOD_VEC (type), ix); |
5013 | } | |
066ec0a4 | 5014 | else if (TYPE_HAS_COPY_CTOR (type)) |
b29441ec PC |
5015 | { |
5016 | /* If construction of the copy constructor was postponed, create | |
5017 | it now. */ | |
5018 | if (CLASSTYPE_LAZY_COPY_CTOR (type)) | |
5019 | lazily_declare_fn (sfk_copy_constructor, type); | |
d5f4eddd JM |
5020 | if (CLASSTYPE_LAZY_MOVE_CTOR (type)) |
5021 | lazily_declare_fn (sfk_move_constructor, type); | |
b29441ec | 5022 | fns = CLASSTYPE_CONSTRUCTORS (type); |
cb68ec50 PC |
5023 | } |
5024 | else | |
5025 | return false; | |
5026 | ||
b29441ec | 5027 | for (; fns; fns = OVL_NEXT (fns)) |
279086c3 PC |
5028 | { |
5029 | tree fn = OVL_CURRENT (fns); | |
5030 | ||
5031 | if (assign_p) | |
5032 | { | |
5033 | if (copy_fn_p (fn) == 0) | |
5034 | continue; | |
5035 | } | |
5036 | else if (copy_fn_p (fn) <= 0) | |
5037 | continue; | |
5038 | ||
5039 | if (!TYPE_NOTHROW_P (TREE_TYPE (fn))) | |
5040 | return false; | |
5041 | } | |
b29441ec | 5042 | |
cb68ec50 PC |
5043 | return true; |
5044 | } | |
5045 | ||
5046 | /* Actually evaluates the trait. */ | |
5047 | ||
5048 | static bool | |
5049 | trait_expr_value (cp_trait_kind kind, tree type1, tree type2) | |
5050 | { | |
5051 | enum tree_code type_code1; | |
5052 | tree t; | |
5053 | ||
5054 | type_code1 = TREE_CODE (type1); | |
5055 | ||
5056 | switch (kind) | |
5057 | { | |
5058 | case CPTK_HAS_NOTHROW_ASSIGN: | |
c32097d8 | 5059 | type1 = strip_array_types (type1); |
b29441ec PC |
5060 | return (!CP_TYPE_CONST_P (type1) && type_code1 != REFERENCE_TYPE |
5061 | && (trait_expr_value (CPTK_HAS_TRIVIAL_ASSIGN, type1, type2) | |
5062 | || (CLASS_TYPE_P (type1) | |
5063 | && classtype_has_nothrow_assign_or_copy_p (type1, | |
5064 | true)))); | |
cb68ec50 PC |
5065 | |
5066 | case CPTK_HAS_TRIVIAL_ASSIGN: | |
c32097d8 JM |
5067 | /* ??? The standard seems to be missing the "or array of such a class |
5068 | type" wording for this trait. */ | |
5069 | type1 = strip_array_types (type1); | |
cb68ec50 | 5070 | return (!CP_TYPE_CONST_P (type1) && type_code1 != REFERENCE_TYPE |
c32097d8 | 5071 | && (trivial_type_p (type1) |
cb68ec50 | 5072 | || (CLASS_TYPE_P (type1) |
066ec0a4 | 5073 | && TYPE_HAS_TRIVIAL_COPY_ASSIGN (type1)))); |
cb68ec50 PC |
5074 | |
5075 | case CPTK_HAS_NOTHROW_CONSTRUCTOR: | |
5076 | type1 = strip_array_types (type1); | |
5077 | return (trait_expr_value (CPTK_HAS_TRIVIAL_CONSTRUCTOR, type1, type2) | |
5078 | || (CLASS_TYPE_P (type1) | |
e24313f3 PC |
5079 | && (t = locate_ctor (type1, NULL)) |
5080 | && TYPE_NOTHROW_P (TREE_TYPE (t)))); | |
cb68ec50 PC |
5081 | |
5082 | case CPTK_HAS_TRIVIAL_CONSTRUCTOR: | |
5083 | type1 = strip_array_types (type1); | |
c32097d8 | 5084 | return (trivial_type_p (type1) |
cb68ec50 PC |
5085 | || (CLASS_TYPE_P (type1) && TYPE_HAS_TRIVIAL_DFLT (type1))); |
5086 | ||
5087 | case CPTK_HAS_NOTHROW_COPY: | |
c32097d8 | 5088 | type1 = strip_array_types (type1); |
cb68ec50 PC |
5089 | return (trait_expr_value (CPTK_HAS_TRIVIAL_COPY, type1, type2) |
5090 | || (CLASS_TYPE_P (type1) | |
b29441ec | 5091 | && classtype_has_nothrow_assign_or_copy_p (type1, false))); |
cb68ec50 PC |
5092 | |
5093 | case CPTK_HAS_TRIVIAL_COPY: | |
c32097d8 JM |
5094 | /* ??? The standard seems to be missing the "or array of such a class |
5095 | type" wording for this trait. */ | |
5096 | type1 = strip_array_types (type1); | |
5097 | return (trivial_type_p (type1) || type_code1 == REFERENCE_TYPE | |
066ec0a4 | 5098 | || (CLASS_TYPE_P (type1) && TYPE_HAS_TRIVIAL_COPY_CTOR (type1))); |
cb68ec50 PC |
5099 | |
5100 | case CPTK_HAS_TRIVIAL_DESTRUCTOR: | |
5101 | type1 = strip_array_types (type1); | |
c32097d8 | 5102 | return (trivial_type_p (type1) || type_code1 == REFERENCE_TYPE |
cb68ec50 PC |
5103 | || (CLASS_TYPE_P (type1) |
5104 | && TYPE_HAS_TRIVIAL_DESTRUCTOR (type1))); | |
5105 | ||
5106 | case CPTK_HAS_VIRTUAL_DESTRUCTOR: | |
5107 | return (CLASS_TYPE_P (type1) | |
5108 | && (t = locate_dtor (type1, NULL)) && DECL_VIRTUAL_P (t)); | |
5109 | ||
5110 | case CPTK_IS_ABSTRACT: | |
5111 | return (CLASS_TYPE_P (type1) && CLASSTYPE_PURE_VIRTUALS (type1)); | |
5112 | ||
5113 | case CPTK_IS_BASE_OF: | |
5114 | return (NON_UNION_CLASS_TYPE_P (type1) && NON_UNION_CLASS_TYPE_P (type2) | |
5115 | && DERIVED_FROM_P (type1, type2)); | |
5116 | ||
5117 | case CPTK_IS_CLASS: | |
5118 | return (NON_UNION_CLASS_TYPE_P (type1)); | |
5119 | ||
5120 | case CPTK_IS_CONVERTIBLE_TO: | |
5121 | /* TODO */ | |
5122 | return false; | |
5123 | ||
5124 | case CPTK_IS_EMPTY: | |
5125 | return (NON_UNION_CLASS_TYPE_P (type1) && CLASSTYPE_EMPTY_P (type1)); | |
5126 | ||
5127 | case CPTK_IS_ENUM: | |
5128 | return (type_code1 == ENUMERAL_TYPE); | |
5129 | ||
5130 | case CPTK_IS_POD: | |
5131 | return (pod_type_p (type1)); | |
5132 | ||
5133 | case CPTK_IS_POLYMORPHIC: | |
5134 | return (CLASS_TYPE_P (type1) && TYPE_POLYMORPHIC_P (type1)); | |
5135 | ||
c32097d8 JM |
5136 | case CPTK_IS_STD_LAYOUT: |
5137 | return (std_layout_type_p (type1)); | |
5138 | ||
5139 | case CPTK_IS_TRIVIAL: | |
5140 | return (trivial_type_p (type1)); | |
5141 | ||
cb68ec50 PC |
5142 | case CPTK_IS_UNION: |
5143 | return (type_code1 == UNION_TYPE); | |
5144 | ||
5145 | default: | |
5146 | gcc_unreachable (); | |
5147 | return false; | |
5148 | } | |
5149 | } | |
5150 | ||
ff284b4b PC |
5151 | /* Returns true if TYPE is a complete type, an array of unknown bound, |
5152 | or (possibly cv-qualified) void, returns false otherwise. */ | |
5153 | ||
5154 | static bool | |
5155 | check_trait_type (tree type) | |
5156 | { | |
5157 | if (COMPLETE_TYPE_P (type)) | |
5158 | return true; | |
5159 | ||
f94ae987 JM |
5160 | if (TREE_CODE (type) == ARRAY_TYPE && !TYPE_DOMAIN (type) |
5161 | && COMPLETE_TYPE_P (TREE_TYPE (type))) | |
ff284b4b PC |
5162 | return true; |
5163 | ||
5164 | if (VOID_TYPE_P (type)) | |
5165 | return true; | |
5166 | ||
5167 | return false; | |
5168 | } | |
5169 | ||
cb68ec50 PC |
5170 | /* Process a trait expression. */ |
5171 | ||
5172 | tree | |
5173 | finish_trait_expr (cp_trait_kind kind, tree type1, tree type2) | |
5174 | { | |
5175 | gcc_assert (kind == CPTK_HAS_NOTHROW_ASSIGN | |
5176 | || kind == CPTK_HAS_NOTHROW_CONSTRUCTOR | |
5177 | || kind == CPTK_HAS_NOTHROW_COPY | |
5178 | || kind == CPTK_HAS_TRIVIAL_ASSIGN | |
5179 | || kind == CPTK_HAS_TRIVIAL_CONSTRUCTOR | |
5180 | || kind == CPTK_HAS_TRIVIAL_COPY | |
5181 | || kind == CPTK_HAS_TRIVIAL_DESTRUCTOR | |
5182 | || kind == CPTK_HAS_VIRTUAL_DESTRUCTOR | |
5183 | || kind == CPTK_IS_ABSTRACT | |
5184 | || kind == CPTK_IS_BASE_OF | |
5185 | || kind == CPTK_IS_CLASS | |
5186 | || kind == CPTK_IS_CONVERTIBLE_TO | |
5187 | || kind == CPTK_IS_EMPTY | |
5188 | || kind == CPTK_IS_ENUM | |
5189 | || kind == CPTK_IS_POD | |
5190 | || kind == CPTK_IS_POLYMORPHIC | |
c32097d8 JM |
5191 | || kind == CPTK_IS_STD_LAYOUT |
5192 | || kind == CPTK_IS_TRIVIAL | |
cb68ec50 PC |
5193 | || kind == CPTK_IS_UNION); |
5194 | ||
5195 | if (kind == CPTK_IS_CONVERTIBLE_TO) | |
5196 | { | |
5197 | sorry ("__is_convertible_to"); | |
5198 | return error_mark_node; | |
5199 | } | |
5200 | ||
5201 | if (type1 == error_mark_node | |
5202 | || ((kind == CPTK_IS_BASE_OF || kind == CPTK_IS_CONVERTIBLE_TO) | |
5203 | && type2 == error_mark_node)) | |
5204 | return error_mark_node; | |
5205 | ||
5206 | if (processing_template_decl) | |
5207 | { | |
5208 | tree trait_expr = make_node (TRAIT_EXPR); | |
5209 | TREE_TYPE (trait_expr) = boolean_type_node; | |
5210 | TRAIT_EXPR_TYPE1 (trait_expr) = type1; | |
5211 | TRAIT_EXPR_TYPE2 (trait_expr) = type2; | |
5212 | TRAIT_EXPR_KIND (trait_expr) = kind; | |
5213 | return trait_expr; | |
5214 | } | |
5215 | ||
10c1d4af PC |
5216 | complete_type (type1); |
5217 | if (type2) | |
5218 | complete_type (type2); | |
5219 | ||
ff284b4b | 5220 | switch (kind) |
cb68ec50 | 5221 | { |
ff284b4b PC |
5222 | case CPTK_HAS_NOTHROW_ASSIGN: |
5223 | case CPTK_HAS_TRIVIAL_ASSIGN: | |
5224 | case CPTK_HAS_NOTHROW_CONSTRUCTOR: | |
5225 | case CPTK_HAS_TRIVIAL_CONSTRUCTOR: | |
5226 | case CPTK_HAS_NOTHROW_COPY: | |
5227 | case CPTK_HAS_TRIVIAL_COPY: | |
5228 | case CPTK_HAS_TRIVIAL_DESTRUCTOR: | |
5229 | case CPTK_HAS_VIRTUAL_DESTRUCTOR: | |
5230 | case CPTK_IS_ABSTRACT: | |
5231 | case CPTK_IS_EMPTY: | |
5232 | case CPTK_IS_POD: | |
5233 | case CPTK_IS_POLYMORPHIC: | |
c32097d8 JM |
5234 | case CPTK_IS_STD_LAYOUT: |
5235 | case CPTK_IS_TRIVIAL: | |
ff284b4b PC |
5236 | if (!check_trait_type (type1)) |
5237 | { | |
5238 | error ("incomplete type %qT not allowed", type1); | |
5239 | return error_mark_node; | |
5240 | } | |
5241 | break; | |
5242 | ||
5243 | case CPTK_IS_BASE_OF: | |
5244 | if (NON_UNION_CLASS_TYPE_P (type1) && NON_UNION_CLASS_TYPE_P (type2) | |
5245 | && !same_type_ignoring_top_level_qualifiers_p (type1, type2) | |
5246 | && !COMPLETE_TYPE_P (type2)) | |
5247 | { | |
5248 | error ("incomplete type %qT not allowed", type2); | |
5249 | return error_mark_node; | |
5250 | } | |
5251 | break; | |
5252 | ||
5253 | case CPTK_IS_CLASS: | |
5254 | case CPTK_IS_ENUM: | |
5255 | case CPTK_IS_UNION: | |
5256 | break; | |
5257 | ||
5258 | case CPTK_IS_CONVERTIBLE_TO: | |
5259 | default: | |
5260 | gcc_unreachable (); | |
cb68ec50 PC |
5261 | } |
5262 | ||
5263 | return (trait_expr_value (kind, type1, type2) | |
5264 | ? boolean_true_node : boolean_false_node); | |
5265 | } | |
5266 | ||
6ec637a4 JJ |
5267 | /* Do-nothing variants of functions to handle pragma FLOAT_CONST_DECIMAL64, |
5268 | which is ignored for C++. */ | |
5269 | ||
5270 | void | |
5271 | set_float_const_decimal64 (void) | |
5272 | { | |
5273 | } | |
5274 | ||
5275 | void | |
5276 | clear_float_const_decimal64 (void) | |
5277 | { | |
5278 | } | |
5279 | ||
5280 | bool | |
5281 | float_const_decimal64_p (void) | |
5282 | { | |
5283 | return 0; | |
5284 | } | |
5285 | ||
7ecbca9d GDR |
5286 | /* Return true if T is a literal type. */ |
5287 | ||
5288 | bool | |
5289 | literal_type_p (tree t) | |
5290 | { | |
5291 | if (SCALAR_TYPE_P (t)) | |
5292 | return true; | |
5293 | if (CLASS_TYPE_P (t)) | |
5294 | return CLASSTYPE_LITERAL_P (t); | |
5295 | if (TREE_CODE (t) == ARRAY_TYPE) | |
5296 | return literal_type_p (strip_array_types (t)); | |
5297 | return false; | |
5298 | } | |
5299 | ||
5300 | ||
5301 | /* If DECL is a variable declared `constexpr', require its type | |
5302 | be literal. Return the DECL if OK, otherwise NULL. */ | |
5303 | ||
5304 | tree | |
5305 | ensure_literal_type_for_constexpr_object (tree decl) | |
5306 | { | |
5307 | tree type = TREE_TYPE (decl); | |
5308 | if (TREE_CODE (decl) == VAR_DECL && DECL_DECLARED_CONSTEXPR_P (decl) | |
5309 | && !processing_template_decl && !literal_type_p (type)) | |
5310 | { | |
5311 | error ("the type %qT of constexpr variable %qD is not literal", | |
5312 | type, decl); | |
5313 | return NULL; | |
5314 | } | |
5315 | return decl; | |
5316 | } | |
5317 | ||
5318 | /* Return non-null if FUN certainly designates a valid constexpr function | |
5319 | declaration. Otherwise return NULL. Issue appropriate diagnostics | |
5320 | if necessary. Note that we only check the declaration, not the body | |
5321 | of the function. */ | |
5322 | ||
5323 | tree | |
5324 | validate_constexpr_fundecl (tree fun) | |
5325 | { | |
5326 | tree rettype = NULL; | |
5327 | tree parm = NULL; | |
5328 | ||
5329 | /* Don't bother if FUN is not marked constexpr. */ | |
5330 | if (!DECL_DECLARED_CONSTEXPR_P (fun)) | |
5331 | return NULL; | |
5332 | ||
5333 | /* For a function template, we have absolutely no guarantee that all | |
5334 | instantiations will be constexpr. */ | |
5335 | if (TREE_CODE (fun) == TEMPLATE_DECL) | |
5336 | return NULL; | |
5337 | ||
5338 | parm = FUNCTION_FIRST_USER_PARM (fun); | |
5339 | for (; parm != NULL; parm = TREE_CHAIN (parm)) | |
5340 | { | |
5341 | tree type = TREE_TYPE (parm); | |
5342 | if (dependent_type_p (type)) | |
5343 | return NULL; | |
5344 | if (!literal_type_p (type)) | |
5345 | { | |
5346 | error ("parameter %q#D is not of literal type", parm); | |
5347 | return NULL; | |
5348 | } | |
5349 | } | |
5350 | ||
5351 | if (DECL_CONSTRUCTOR_P (fun)) | |
5352 | return fun; | |
5353 | ||
5354 | rettype = TREE_TYPE (TREE_TYPE (fun)); | |
5355 | if (dependent_type_p (rettype)) | |
5356 | return NULL; | |
5357 | if (!literal_type_p (rettype)) | |
5358 | { | |
5359 | error ("return type %qT of function %qD is not a literal type", | |
5360 | TREE_TYPE (TREE_TYPE (fun)), fun); | |
5361 | return NULL; | |
5362 | } | |
5363 | return fun; | |
5364 | } | |
5365 | ||
5366 | ||
d5f4eddd JM |
5367 | /* Constructor for a lambda expression. */ |
5368 | ||
5369 | tree | |
5370 | build_lambda_expr (void) | |
5371 | { | |
5372 | tree lambda = make_node (LAMBDA_EXPR); | |
5373 | LAMBDA_EXPR_DEFAULT_CAPTURE_MODE (lambda) = CPLD_NONE; | |
5374 | LAMBDA_EXPR_CAPTURE_LIST (lambda) = NULL_TREE; | |
5375 | LAMBDA_EXPR_THIS_CAPTURE (lambda) = NULL_TREE; | |
5376 | LAMBDA_EXPR_RETURN_TYPE (lambda) = NULL_TREE; | |
5377 | LAMBDA_EXPR_MUTABLE_P (lambda) = false; | |
5378 | return lambda; | |
5379 | } | |
5380 | ||
5381 | /* Create the closure object for a LAMBDA_EXPR. */ | |
5382 | ||
5383 | tree | |
5384 | build_lambda_object (tree lambda_expr) | |
5385 | { | |
5386 | /* Build aggregate constructor call. | |
5387 | - cp_parser_braced_list | |
5388 | - cp_parser_functional_cast */ | |
5389 | VEC(constructor_elt,gc) *elts = NULL; | |
5390 | tree node, expr, type; | |
5391 | location_t saved_loc; | |
5392 | ||
5393 | if (processing_template_decl) | |
5394 | return lambda_expr; | |
5395 | ||
5396 | /* Make sure any error messages refer to the lambda-introducer. */ | |
5397 | saved_loc = input_location; | |
5398 | input_location = LAMBDA_EXPR_LOCATION (lambda_expr); | |
5399 | ||
5400 | for (node = LAMBDA_EXPR_CAPTURE_LIST (lambda_expr); | |
5401 | node; | |
5402 | node = TREE_CHAIN (node)) | |
5403 | { | |
5404 | tree field = TREE_PURPOSE (node); | |
5405 | tree val = TREE_VALUE (node); | |
5406 | ||
1f4a7a48 JM |
5407 | if (DECL_P (val)) |
5408 | mark_used (val); | |
5409 | ||
d5f4eddd JM |
5410 | /* Mere mortals can't copy arrays with aggregate initialization, so |
5411 | do some magic to make it work here. */ | |
5412 | if (TREE_CODE (TREE_TYPE (field)) == ARRAY_TYPE) | |
5413 | val = build_array_copy (val); | |
37a7519a JM |
5414 | else if (DECL_NORMAL_CAPTURE_P (field) |
5415 | && TREE_CODE (TREE_TYPE (field)) != REFERENCE_TYPE) | |
5416 | { | |
5417 | /* "the entities that are captured by copy are used to | |
5418 | direct-initialize each corresponding non-static data | |
5419 | member of the resulting closure object." | |
5420 | ||
5421 | There's normally no way to express direct-initialization | |
5422 | from an element of a CONSTRUCTOR, so we build up a special | |
5423 | TARGET_EXPR to bypass the usual copy-initialization. */ | |
5424 | val = force_rvalue (val); | |
5425 | if (TREE_CODE (val) == TARGET_EXPR) | |
5426 | TARGET_EXPR_DIRECT_INIT_P (val) = true; | |
5427 | } | |
d5f4eddd JM |
5428 | |
5429 | CONSTRUCTOR_APPEND_ELT (elts, DECL_NAME (field), val); | |
5430 | } | |
5431 | ||
5432 | expr = build_constructor (init_list_type_node, elts); | |
5433 | CONSTRUCTOR_IS_DIRECT_INIT (expr) = 1; | |
5434 | ||
5435 | /* N2927: "[The closure] class type is not an aggregate." | |
5436 | But we briefly treat it as an aggregate to make this simpler. */ | |
5437 | type = TREE_TYPE (lambda_expr); | |
5438 | CLASSTYPE_NON_AGGREGATE (type) = 0; | |
5439 | expr = finish_compound_literal (type, expr); | |
5440 | CLASSTYPE_NON_AGGREGATE (type) = 1; | |
5441 | ||
5442 | input_location = saved_loc; | |
5443 | return expr; | |
5444 | } | |
5445 | ||
5446 | /* Return an initialized RECORD_TYPE for LAMBDA. | |
5447 | LAMBDA must have its explicit captures already. */ | |
5448 | ||
5449 | tree | |
5450 | begin_lambda_type (tree lambda) | |
5451 | { | |
5452 | tree type; | |
5453 | ||
5454 | { | |
5455 | /* Unique name. This is just like an unnamed class, but we cannot use | |
5456 | make_anon_name because of certain checks against TYPE_ANONYMOUS_P. */ | |
5457 | tree name; | |
5458 | name = make_lambda_name (); | |
5459 | ||
5460 | /* Create the new RECORD_TYPE for this lambda. */ | |
5461 | type = xref_tag (/*tag_code=*/record_type, | |
5462 | name, | |
5463 | /*scope=*/ts_within_enclosing_non_class, | |
5464 | /*template_header_p=*/false); | |
5465 | } | |
5466 | ||
5467 | /* Designate it as a struct so that we can use aggregate initialization. */ | |
5468 | CLASSTYPE_DECLARED_CLASS (type) = false; | |
5469 | ||
5470 | /* Clear base types. */ | |
5471 | xref_basetypes (type, /*bases=*/NULL_TREE); | |
5472 | ||
5473 | /* Start the class. */ | |
5474 | type = begin_class_definition (type, /*attributes=*/NULL_TREE); | |
5475 | ||
5476 | /* Cross-reference the expression and the type. */ | |
5477 | TREE_TYPE (lambda) = type; | |
5478 | CLASSTYPE_LAMBDA_EXPR (type) = lambda; | |
5479 | ||
5480 | return type; | |
5481 | } | |
5482 | ||
5483 | /* Returns the type to use for the return type of the operator() of a | |
5484 | closure class. */ | |
5485 | ||
5486 | tree | |
5487 | lambda_return_type (tree expr) | |
5488 | { | |
5489 | tree type; | |
95b24c84 JM |
5490 | if (BRACE_ENCLOSED_INITIALIZER_P (expr)) |
5491 | { | |
5492 | warning (0, "cannot deduce lambda return type from a braced-init-list"); | |
5493 | return void_type_node; | |
5494 | } | |
d5f4eddd JM |
5495 | if (type_dependent_expression_p (expr)) |
5496 | { | |
5497 | type = cxx_make_type (DECLTYPE_TYPE); | |
5498 | DECLTYPE_TYPE_EXPR (type) = expr; | |
5499 | DECLTYPE_FOR_LAMBDA_RETURN (type) = true; | |
5500 | SET_TYPE_STRUCTURAL_EQUALITY (type); | |
5501 | } | |
5502 | else | |
5503 | type = type_decays_to (unlowered_expr_type (expr)); | |
5504 | return type; | |
5505 | } | |
5506 | ||
5507 | /* Given a LAMBDA_EXPR or closure type LAMBDA, return the op() of the | |
5508 | closure type. */ | |
5509 | ||
5510 | tree | |
5511 | lambda_function (tree lambda) | |
5512 | { | |
5513 | tree type; | |
5514 | if (TREE_CODE (lambda) == LAMBDA_EXPR) | |
5515 | type = TREE_TYPE (lambda); | |
5516 | else | |
5517 | type = lambda; | |
5518 | gcc_assert (LAMBDA_TYPE_P (type)); | |
5519 | /* Don't let debug_tree cause instantiation. */ | |
5520 | if (CLASSTYPE_TEMPLATE_INSTANTIATION (type) && !COMPLETE_TYPE_P (type)) | |
5521 | return NULL_TREE; | |
5522 | lambda = lookup_member (type, ansi_opname (CALL_EXPR), | |
5523 | /*protect=*/0, /*want_type=*/false); | |
5524 | if (lambda) | |
5525 | lambda = BASELINK_FUNCTIONS (lambda); | |
5526 | return lambda; | |
5527 | } | |
5528 | ||
5529 | /* Returns the type to use for the FIELD_DECL corresponding to the | |
5530 | capture of EXPR. | |
5531 | The caller should add REFERENCE_TYPE for capture by reference. */ | |
5532 | ||
5533 | tree | |
5534 | lambda_capture_field_type (tree expr) | |
5535 | { | |
5536 | tree type; | |
5537 | if (type_dependent_expression_p (expr)) | |
5538 | { | |
5539 | type = cxx_make_type (DECLTYPE_TYPE); | |
5540 | DECLTYPE_TYPE_EXPR (type) = expr; | |
5541 | DECLTYPE_FOR_LAMBDA_CAPTURE (type) = true; | |
5542 | SET_TYPE_STRUCTURAL_EQUALITY (type); | |
5543 | } | |
5544 | else | |
5545 | type = non_reference (unlowered_expr_type (expr)); | |
5546 | return type; | |
5547 | } | |
5548 | ||
5549 | /* Recompute the return type for LAMBDA with body of the form: | |
5550 | { return EXPR ; } */ | |
5551 | ||
5552 | void | |
5553 | apply_lambda_return_type (tree lambda, tree return_type) | |
5554 | { | |
5555 | tree fco = lambda_function (lambda); | |
5556 | tree result; | |
5557 | ||
5558 | LAMBDA_EXPR_RETURN_TYPE (lambda) = return_type; | |
5559 | ||
5560 | /* If we got a DECLTYPE_TYPE, don't stick it in the function yet, | |
5561 | it would interfere with instantiating the closure type. */ | |
5562 | if (dependent_type_p (return_type)) | |
5563 | return; | |
5564 | if (return_type == error_mark_node) | |
5565 | return; | |
5566 | ||
5567 | /* TREE_TYPE (FUNCTION_DECL) == METHOD_TYPE | |
5568 | TREE_TYPE (METHOD_TYPE) == return-type */ | |
643d4cd6 | 5569 | TREE_TYPE (fco) = change_return_type (return_type, TREE_TYPE (fco)); |
d5f4eddd JM |
5570 | |
5571 | result = DECL_RESULT (fco); | |
5572 | if (result == NULL_TREE) | |
5573 | return; | |
5574 | ||
5575 | /* We already have a DECL_RESULT from start_preparsed_function. | |
5576 | Now we need to redo the work it and allocate_struct_function | |
5577 | did to reflect the new type. */ | |
5578 | result = build_decl (input_location, RESULT_DECL, NULL_TREE, | |
5579 | TYPE_MAIN_VARIANT (return_type)); | |
5580 | DECL_ARTIFICIAL (result) = 1; | |
5581 | DECL_IGNORED_P (result) = 1; | |
5582 | cp_apply_type_quals_to_decl (cp_type_quals (return_type), | |
5583 | result); | |
5584 | ||
5585 | DECL_RESULT (fco) = result; | |
5586 | ||
5587 | if (!processing_template_decl && aggregate_value_p (result, fco)) | |
5588 | { | |
5589 | #ifdef PCC_STATIC_STRUCT_RETURN | |
5590 | cfun->returns_pcc_struct = 1; | |
5591 | #endif | |
5592 | cfun->returns_struct = 1; | |
5593 | } | |
5594 | ||
5595 | } | |
5596 | ||
5597 | /* DECL is a local variable or parameter from the surrounding scope of a | |
5598 | lambda-expression. Returns the decltype for a use of the capture field | |
5599 | for DECL even if it hasn't been captured yet. */ | |
5600 | ||
5601 | static tree | |
5602 | capture_decltype (tree decl) | |
5603 | { | |
5604 | tree lam = CLASSTYPE_LAMBDA_EXPR (DECL_CONTEXT (current_function_decl)); | |
5605 | /* FIXME do lookup instead of list walk? */ | |
5606 | tree cap = value_member (decl, LAMBDA_EXPR_CAPTURE_LIST (lam)); | |
5607 | tree type; | |
5608 | ||
5609 | if (cap) | |
5610 | type = TREE_TYPE (TREE_PURPOSE (cap)); | |
5611 | else | |
5612 | switch (LAMBDA_EXPR_DEFAULT_CAPTURE_MODE (lam)) | |
5613 | { | |
5614 | case CPLD_NONE: | |
5615 | error ("%qD is not captured", decl); | |
5616 | return error_mark_node; | |
5617 | ||
5618 | case CPLD_COPY: | |
5619 | type = TREE_TYPE (decl); | |
5620 | if (TREE_CODE (type) == REFERENCE_TYPE | |
5621 | && TREE_CODE (TREE_TYPE (type)) != FUNCTION_TYPE) | |
5622 | type = TREE_TYPE (type); | |
5623 | break; | |
5624 | ||
5625 | case CPLD_REFERENCE: | |
5626 | type = TREE_TYPE (decl); | |
5627 | if (TREE_CODE (type) != REFERENCE_TYPE) | |
5628 | type = build_reference_type (TREE_TYPE (decl)); | |
5629 | break; | |
5630 | ||
5631 | default: | |
5632 | gcc_unreachable (); | |
5633 | } | |
5634 | ||
5635 | if (TREE_CODE (type) != REFERENCE_TYPE) | |
5636 | { | |
5637 | if (!LAMBDA_EXPR_MUTABLE_P (lam)) | |
a3360e77 | 5638 | type = cp_build_qualified_type (type, (cp_type_quals (type) |
d5f4eddd JM |
5639 | |TYPE_QUAL_CONST)); |
5640 | type = build_reference_type (type); | |
5641 | } | |
5642 | return type; | |
5643 | } | |
5644 | ||
5645 | /* From an ID and INITIALIZER, create a capture (by reference if | |
5646 | BY_REFERENCE_P is true), add it to the capture-list for LAMBDA, | |
5647 | and return it. */ | |
5648 | ||
5649 | tree | |
37a7519a JM |
5650 | add_capture (tree lambda, tree id, tree initializer, bool by_reference_p, |
5651 | bool explicit_init_p) | |
d5f4eddd JM |
5652 | { |
5653 | tree type; | |
5654 | tree member; | |
5655 | ||
5656 | type = lambda_capture_field_type (initializer); | |
5657 | if (by_reference_p) | |
5658 | { | |
5659 | type = build_reference_type (type); | |
5660 | if (!real_lvalue_p (initializer)) | |
5661 | error ("cannot capture %qE by reference", initializer); | |
5662 | } | |
5663 | ||
5664 | /* Make member variable. */ | |
5665 | member = build_lang_decl (FIELD_DECL, id, type); | |
37a7519a JM |
5666 | if (!explicit_init_p) |
5667 | /* Normal captures are invisible to name lookup but uses are replaced | |
5668 | with references to the capture field; we implement this by only | |
5669 | really making them invisible in unevaluated context; see | |
5670 | qualify_lookup. For now, let's make explicitly initialized captures | |
5671 | always visible. */ | |
5672 | DECL_NORMAL_CAPTURE_P (member) = true; | |
d5f4eddd | 5673 | |
19030d77 JM |
5674 | /* Add it to the appropriate closure class if we've started it. */ |
5675 | if (current_class_type && current_class_type == TREE_TYPE (lambda)) | |
5676 | finish_member_declaration (member); | |
d5f4eddd JM |
5677 | |
5678 | LAMBDA_EXPR_CAPTURE_LIST (lambda) | |
5679 | = tree_cons (member, initializer, LAMBDA_EXPR_CAPTURE_LIST (lambda)); | |
5680 | ||
5681 | if (id == get_identifier ("__this")) | |
5682 | { | |
5683 | if (LAMBDA_EXPR_CAPTURES_THIS_P (lambda)) | |
5684 | error ("already captured %<this%> in lambda expression"); | |
5685 | LAMBDA_EXPR_THIS_CAPTURE (lambda) = member; | |
5686 | } | |
5687 | ||
5688 | return member; | |
5689 | } | |
5690 | ||
19030d77 JM |
5691 | /* Register all the capture members on the list CAPTURES, which is the |
5692 | LAMBDA_EXPR_CAPTURE_LIST for the lambda after the introducer. */ | |
5693 | ||
5694 | void register_capture_members (tree captures) | |
5695 | { | |
5696 | if (captures) | |
5697 | { | |
5698 | register_capture_members (TREE_CHAIN (captures)); | |
5699 | finish_member_declaration (TREE_PURPOSE (captures)); | |
5700 | } | |
5701 | } | |
5702 | ||
9660afe0 JM |
5703 | /* Given a FIELD_DECL decl belonging to a closure type, return a |
5704 | COMPONENT_REF of it relative to the 'this' parameter of the op() for | |
5705 | that type. */ | |
5706 | ||
5707 | static tree | |
5708 | thisify_lambda_field (tree decl) | |
5709 | { | |
5710 | tree context = lambda_function (DECL_CONTEXT (decl)); | |
5711 | tree object = cp_build_indirect_ref (DECL_ARGUMENTS (context), | |
dd865ef6 | 5712 | RO_NULL, |
9660afe0 JM |
5713 | tf_warning_or_error); |
5714 | return finish_non_static_data_member (decl, object, | |
5715 | /*qualifying_scope*/NULL_TREE); | |
5716 | } | |
5717 | ||
d5f4eddd JM |
5718 | /* Similar to add_capture, except this works on a stack of nested lambdas. |
5719 | BY_REFERENCE_P in this case is derived from the default capture mode. | |
5720 | Returns the capture for the lambda at the bottom of the stack. */ | |
5721 | ||
5722 | tree | |
5723 | add_default_capture (tree lambda_stack, tree id, tree initializer) | |
5724 | { | |
5725 | bool this_capture_p = (id == get_identifier ("__this")); | |
5726 | ||
5727 | tree member = NULL_TREE; | |
5728 | ||
5729 | tree saved_class_type = current_class_type; | |
5730 | ||
5731 | tree node; | |
5732 | ||
5733 | for (node = lambda_stack; | |
5734 | node; | |
5735 | node = TREE_CHAIN (node)) | |
5736 | { | |
5737 | tree lambda = TREE_VALUE (node); | |
5738 | ||
5739 | current_class_type = TREE_TYPE (lambda); | |
5740 | member = add_capture (lambda, | |
5741 | id, | |
5742 | initializer, | |
5743 | /*by_reference_p=*/ | |
5744 | (!this_capture_p | |
5745 | && (LAMBDA_EXPR_DEFAULT_CAPTURE_MODE (lambda) | |
37a7519a JM |
5746 | == CPLD_REFERENCE)), |
5747 | /*explicit_init_p=*/false); | |
9660afe0 | 5748 | initializer = thisify_lambda_field (member); |
d5f4eddd JM |
5749 | } |
5750 | ||
5751 | current_class_type = saved_class_type; | |
5752 | ||
5753 | return member; | |
d5f4eddd JM |
5754 | } |
5755 | ||
5756 | /* Return the capture pertaining to a use of 'this' in LAMBDA, in the form of an | |
5757 | INDIRECT_REF, possibly adding it through default capturing. */ | |
5758 | ||
5759 | tree | |
5760 | lambda_expr_this_capture (tree lambda) | |
5761 | { | |
5762 | tree result; | |
5763 | ||
5764 | tree this_capture = LAMBDA_EXPR_THIS_CAPTURE (lambda); | |
5765 | ||
5766 | /* Try to default capture 'this' if we can. */ | |
5767 | if (!this_capture | |
5768 | && LAMBDA_EXPR_DEFAULT_CAPTURE_MODE (lambda) != CPLD_NONE) | |
5769 | { | |
5770 | tree containing_function = TYPE_CONTEXT (TREE_TYPE (lambda)); | |
5771 | tree lambda_stack = tree_cons (NULL_TREE, lambda, NULL_TREE); | |
71d16049 | 5772 | tree init = NULL_TREE; |
d5f4eddd JM |
5773 | |
5774 | /* If we are in a lambda function, we can move out until we hit: | |
5775 | 1. a non-lambda function, | |
5776 | 2. a lambda function capturing 'this', or | |
5777 | 3. a non-default capturing lambda function. */ | |
5778 | while (LAMBDA_FUNCTION_P (containing_function)) | |
5779 | { | |
5780 | tree lambda | |
5781 | = CLASSTYPE_LAMBDA_EXPR (DECL_CONTEXT (containing_function)); | |
5782 | ||
71d16049 JM |
5783 | if (LAMBDA_EXPR_THIS_CAPTURE (lambda)) |
5784 | { | |
5785 | /* An outer lambda has already captured 'this'. */ | |
5786 | tree cap = LAMBDA_EXPR_THIS_CAPTURE (lambda); | |
92de1b37 | 5787 | init = thisify_lambda_field (cap); |
71d16049 JM |
5788 | break; |
5789 | } | |
5790 | ||
5791 | if (LAMBDA_EXPR_DEFAULT_CAPTURE_MODE (lambda) == CPLD_NONE) | |
5792 | /* An outer lambda won't let us capture 'this'. */ | |
5793 | break; | |
d5f4eddd JM |
5794 | |
5795 | lambda_stack = tree_cons (NULL_TREE, | |
5796 | lambda, | |
5797 | lambda_stack); | |
5798 | ||
5799 | containing_function = decl_function_context (containing_function); | |
5800 | } | |
5801 | ||
71d16049 JM |
5802 | if (!init && DECL_NONSTATIC_MEMBER_FUNCTION_P (containing_function) |
5803 | && !LAMBDA_FUNCTION_P (containing_function)) | |
5804 | /* First parameter is 'this'. */ | |
5805 | init = DECL_ARGUMENTS (containing_function); | |
d5f4eddd | 5806 | |
71d16049 JM |
5807 | if (init) |
5808 | this_capture = add_default_capture (lambda_stack, | |
5809 | /*id=*/get_identifier ("__this"), | |
5810 | init); | |
d5f4eddd JM |
5811 | } |
5812 | ||
5813 | if (!this_capture) | |
5814 | { | |
5815 | error ("%<this%> was not captured for this lambda function"); | |
5816 | result = error_mark_node; | |
5817 | } | |
5818 | else | |
5819 | { | |
5820 | /* To make sure that current_class_ref is for the lambda. */ | |
5821 | gcc_assert (TYPE_MAIN_VARIANT (TREE_TYPE (current_class_ref)) == TREE_TYPE (lambda)); | |
5822 | ||
5823 | result = finish_non_static_data_member (this_capture, | |
2defb926 | 5824 | NULL_TREE, |
d5f4eddd JM |
5825 | /*qualifying_scope=*/NULL_TREE); |
5826 | ||
5827 | /* If 'this' is captured, each use of 'this' is transformed into an | |
5828 | access to the corresponding unnamed data member of the closure | |
5829 | type cast (_expr.cast_ 5.4) to the type of 'this'. [ The cast | |
5830 | ensures that the transformed expression is an rvalue. ] */ | |
5831 | result = rvalue (result); | |
5832 | } | |
5833 | ||
5834 | return result; | |
5835 | } | |
5836 | ||
a6846853 JM |
5837 | /* Returns the method basetype of the innermost non-lambda function, or |
5838 | NULL_TREE if none. */ | |
5839 | ||
5840 | tree | |
5841 | nonlambda_method_basetype (void) | |
5842 | { | |
5843 | tree fn, type; | |
5844 | if (!current_class_ref) | |
5845 | return NULL_TREE; | |
5846 | ||
5847 | type = current_class_type; | |
5848 | if (!LAMBDA_TYPE_P (type)) | |
5849 | return type; | |
5850 | ||
5851 | /* Find the nearest enclosing non-lambda function. */ | |
5852 | fn = TYPE_NAME (type); | |
5853 | do | |
5854 | fn = decl_function_context (fn); | |
5855 | while (fn && LAMBDA_FUNCTION_P (fn)); | |
5856 | ||
5857 | if (!fn || !DECL_NONSTATIC_MEMBER_FUNCTION_P (fn)) | |
5858 | return NULL_TREE; | |
5859 | ||
5860 | return TYPE_METHOD_BASETYPE (TREE_TYPE (fn)); | |
5861 | } | |
5862 | ||
b77068f2 JM |
5863 | /* If the closure TYPE has a static op(), also add a conversion to function |
5864 | pointer. */ | |
5865 | ||
5866 | void | |
5867 | maybe_add_lambda_conv_op (tree type) | |
5868 | { | |
5869 | bool nested = (current_function_decl != NULL_TREE); | |
5870 | tree callop = lambda_function (type); | |
5871 | tree rettype, name, fntype, fn, body, compound_stmt; | |
c6be04ad JM |
5872 | tree thistype, stattype, statfn, convfn, call, arg; |
5873 | VEC (tree, gc) *argvec; | |
b77068f2 | 5874 | |
c6be04ad | 5875 | if (LAMBDA_EXPR_CAPTURE_LIST (CLASSTYPE_LAMBDA_EXPR (type)) != NULL_TREE) |
b77068f2 JM |
5876 | return; |
5877 | ||
c6be04ad JM |
5878 | stattype = build_function_type (TREE_TYPE (TREE_TYPE (callop)), |
5879 | FUNCTION_ARG_CHAIN (callop)); | |
5880 | ||
5881 | /* First build up the conversion op. */ | |
5882 | ||
5883 | rettype = build_pointer_type (stattype); | |
b77068f2 | 5884 | name = mangle_conv_op_name_for_type (rettype); |
c6be04ad JM |
5885 | thistype = cp_build_qualified_type (type, TYPE_QUAL_CONST); |
5886 | fntype = build_method_type_directly (thistype, rettype, void_list_node); | |
5887 | fn = convfn = build_lang_decl (FUNCTION_DECL, name, fntype); | |
b77068f2 JM |
5888 | DECL_SOURCE_LOCATION (fn) = DECL_SOURCE_LOCATION (callop); |
5889 | ||
5890 | if (TARGET_PTRMEMFUNC_VBIT_LOCATION == ptrmemfunc_vbit_in_pfn | |
5891 | && DECL_ALIGN (fn) < 2 * BITS_PER_UNIT) | |
5892 | DECL_ALIGN (fn) = 2 * BITS_PER_UNIT; | |
5893 | ||
5894 | SET_OVERLOADED_OPERATOR_CODE (fn, TYPE_EXPR); | |
5895 | grokclassfn (type, fn, NO_SPECIAL); | |
5896 | set_linkage_according_to_type (type, fn); | |
5897 | rest_of_decl_compilation (fn, toplevel_bindings_p (), at_eof); | |
5898 | DECL_IN_AGGR_P (fn) = 1; | |
5899 | DECL_ARTIFICIAL (fn) = 1; | |
5900 | DECL_NOT_REALLY_EXTERN (fn) = 1; | |
5901 | DECL_DECLARED_INLINE_P (fn) = 1; | |
c6be04ad JM |
5902 | DECL_ARGUMENTS (fn) = build_this_parm (fntype, TYPE_QUAL_CONST); |
5903 | if (nested) | |
5904 | DECL_INTERFACE_KNOWN (fn) = 1; | |
5905 | ||
5906 | add_method (type, fn, NULL_TREE); | |
5907 | ||
5908 | /* Generic thunk code fails for varargs; we'll complain in mark_used if | |
5909 | the conversion op is used. */ | |
5910 | if (varargs_function_p (callop)) | |
5911 | { | |
5912 | DECL_DELETED_FN (fn) = 1; | |
5913 | return; | |
5914 | } | |
5915 | ||
5916 | /* Now build up the thunk to be returned. */ | |
5917 | ||
5918 | name = get_identifier ("_FUN"); | |
5919 | fn = statfn = build_lang_decl (FUNCTION_DECL, name, stattype); | |
5920 | DECL_SOURCE_LOCATION (fn) = DECL_SOURCE_LOCATION (callop); | |
5921 | if (TARGET_PTRMEMFUNC_VBIT_LOCATION == ptrmemfunc_vbit_in_pfn | |
5922 | && DECL_ALIGN (fn) < 2 * BITS_PER_UNIT) | |
5923 | DECL_ALIGN (fn) = 2 * BITS_PER_UNIT; | |
5924 | grokclassfn (type, fn, NO_SPECIAL); | |
5925 | set_linkage_according_to_type (type, fn); | |
5926 | rest_of_decl_compilation (fn, toplevel_bindings_p (), at_eof); | |
5927 | DECL_IN_AGGR_P (fn) = 1; | |
5928 | DECL_ARTIFICIAL (fn) = 1; | |
5929 | DECL_NOT_REALLY_EXTERN (fn) = 1; | |
5930 | DECL_DECLARED_INLINE_P (fn) = 1; | |
b77068f2 | 5931 | DECL_STATIC_FUNCTION_P (fn) = 1; |
c6be04ad JM |
5932 | DECL_ARGUMENTS (fn) = copy_list (TREE_CHAIN (DECL_ARGUMENTS (callop))); |
5933 | for (arg = DECL_ARGUMENTS (fn); arg; arg = TREE_CHAIN (arg)) | |
5934 | DECL_CONTEXT (arg) = fn; | |
7a79ff3b JM |
5935 | if (nested) |
5936 | DECL_INTERFACE_KNOWN (fn) = 1; | |
b77068f2 JM |
5937 | |
5938 | add_method (type, fn, NULL_TREE); | |
5939 | ||
5940 | if (nested) | |
5941 | push_function_context (); | |
c6be04ad JM |
5942 | |
5943 | /* Generate the body of the thunk. */ | |
5944 | ||
5945 | start_preparsed_function (statfn, NULL_TREE, | |
5946 | SF_PRE_PARSED | SF_INCLASS_INLINE); | |
5947 | if (DECL_ONE_ONLY (statfn)) | |
5948 | { | |
5949 | /* Put the thunk in the same comdat group as the call op. */ | |
5950 | struct cgraph_node *callop_node, *thunk_node; | |
5951 | DECL_COMDAT_GROUP (statfn) = DECL_COMDAT_GROUP (callop); | |
5952 | callop_node = cgraph_node (callop); | |
5953 | thunk_node = cgraph_node (statfn); | |
5954 | gcc_assert (callop_node->same_comdat_group == NULL); | |
5955 | gcc_assert (thunk_node->same_comdat_group == NULL); | |
5956 | callop_node->same_comdat_group = thunk_node; | |
5957 | thunk_node->same_comdat_group = callop_node; | |
5958 | } | |
5959 | body = begin_function_body (); | |
5960 | compound_stmt = begin_compound_stmt (0); | |
5961 | ||
9542943d JM |
5962 | arg = build1 (NOP_EXPR, TREE_TYPE (DECL_ARGUMENTS (callop)), |
5963 | null_pointer_node); | |
c6be04ad JM |
5964 | argvec = make_tree_vector (); |
5965 | VEC_quick_push (tree, argvec, arg); | |
5966 | for (arg = DECL_ARGUMENTS (statfn); arg; arg = TREE_CHAIN (arg)) | |
5967 | VEC_safe_push (tree, gc, argvec, arg); | |
e62e4922 JM |
5968 | call = build_call_a (callop, VEC_length (tree, argvec), |
5969 | VEC_address (tree, argvec)); | |
c6be04ad | 5970 | CALL_FROM_THUNK_P (call) = 1; |
e62e4922 JM |
5971 | if (MAYBE_CLASS_TYPE_P (TREE_TYPE (call))) |
5972 | call = build_cplus_new (TREE_TYPE (call), call); | |
5973 | call = convert_from_reference (call); | |
c6be04ad JM |
5974 | finish_return_stmt (call); |
5975 | ||
5976 | finish_compound_stmt (compound_stmt); | |
5977 | finish_function_body (body); | |
5978 | ||
5979 | expand_or_defer_fn (finish_function (2)); | |
5980 | ||
5981 | /* Generate the body of the conversion op. */ | |
5982 | ||
5983 | start_preparsed_function (convfn, NULL_TREE, | |
b77068f2 JM |
5984 | SF_PRE_PARSED | SF_INCLASS_INLINE); |
5985 | body = begin_function_body (); | |
5986 | compound_stmt = begin_compound_stmt (0); | |
5987 | ||
c6be04ad | 5988 | finish_return_stmt (decay_conversion (statfn)); |
b77068f2 JM |
5989 | |
5990 | finish_compound_stmt (compound_stmt); | |
5991 | finish_function_body (body); | |
5992 | ||
5993 | expand_or_defer_fn (finish_function (2)); | |
c6be04ad | 5994 | |
b77068f2 JM |
5995 | if (nested) |
5996 | pop_function_context (); | |
5997 | } | |
cf22909c | 5998 | #include "gt-cp-semantics.h" |