gcc/cp/ChangeLog

   1 2020-02-26  Marek Polacek  <polacek@redhat.com>
   2
   3         PR c++/93789 - ICE with invalid array bounds.
   4         * decl.c (compute_array_index_type_loc): Don't use the folded
   5         size when folding cleared TREE_CONSTANT.
   6
   7 2020-02-26  Iain Sandoe  <iain@sandoe.co.uk>
   8
   9         * class.c (classtype_has_non_deleted_copy_ctor): New.
  10         * coroutines.cc (struct param_info): Keep track of params
  11         that are references, and cache the original type and whether
  12         the DTOR is trivial.
  13         (build_actor_fn): Handle param copies always, and adjust the
  14         handling for references.
  15         (register_param_uses): Only handle uses here.
  16         (classtype_has_non_deleted_copy_ctor): New.
  17         (morph_fn_to_coro): Adjust param copy handling to match n4849
  18         by reordering ahead of the promise CTOR and always making a
  19         frame copy, even if the param is unused in the coroutine body.
  20         * cp-tree.h (classtype_has_non_deleted_copy_ctor): New.
  21
  22 2020-02-26  Patrick Palka  <ppalka@redhat.com>
  23
  24         * constraint.cc (finish_constraint_binary_op): Set expr's location range
  25         to the range of its operands.
  26         (satisfy_atom): Pass MAP instead of ARGS to diagnose_atomic_constraint.
  27         (diagnose_trait_expr): Take the instantiated parameter mapping MAP
  28         instead of the corresponding template arguments ARGS and adjust body
  29         accordingly.
  30         (diagnose_requires_expr): Likewise.
  31         (diagnose_atomic_constraint): Likewise.  When printing an atomic
  32         constraint expression, print the instantiated parameter mapping
  33         alongside it.
  34         * cxx-pretty-print.cc (cxx_pretty_printer::expression)
  35         [NONTYPE_ARGUMENT_PACK]: Print braces around a NONTYPE_ARGUMENT_PACK.
  36         (cxx_pretty_printer::type_id): Handle TYPE_ARGUMENT_PACK.
  37
  38 2020-02-26  Marek Polacek  <polacek@redhat.com>
  39
  40         PR c++/93676 - value-init crash in template.
  41         * init.c (build_new_1): Don't call build_vec_init in a template.
  42
  43 2020-02-26  Marek Polacek  <polacek@redhat.com>
  44
  45         PR c++/93862 - ICE with static_cast when converting from int[].
  46         * call.c (reference_compatible_p): No longer static.
  47         * cp-tree.h (reference_compatible_p): Declare.
  48         * typeck.c (build_static_cast_1): Use reference_compatible_p instead
  49         of reference_related_p.
  50
  51 2020-02-26  Marek Polacek  <polacek@redhat.com>
  52
  53         PR c++/93803 - ICE with constexpr init and [[no_unique_address]].
  54         * constexpr.c (reduced_constant_expression_p): Don't crash on a null
  55         field.
  56
  57 2020-02-24  Martin Sebor  <msebor@redhat.com>
  58
  59         PR c++/93804
  60         * parser.c (cp_parser_check_class_key): Avoid issuing -Wredundant-tags
  61         in shared C/C++ code in headers.
  62         Remove a duplicate hunk of code.
  63
  64 2020-02-24  Marek Polacek  <polacek@redhat.com>
  65
  66         PR c++/93869 - ICE with -Wmismatched-tags.
  67         * parser.c (cp_parser_check_class_key): Check class_key earlier.
  68
  69 2020-02-24  Marek Polacek  <polacek@redhat.com>
  70
  71         PR c++/93712 - ICE with ill-formed array list-initialization.
  72         * call.c (next_conversion): Return NULL for ck_aggr.
  73         (build_aggr_conv): Set u.expr instead of u.next.
  74         (build_array_conv): Likewise.
  75         (build_complex_conv): Likewise.
  76         (conv_get_original_expr): Handle ck_aggr.
  77
  78 2020-02-24  Jakub Jelinek  <jakub@redhat.com>
  79
  80         P1937R2 - Fixing inconsistencies between const{expr,eval} functions
  81         * call.c (build_over_call): Don't evaluate immediate functions in
  82         unevaluated operands.
  83
  84 2020-02-24  Jason Merrill  <jason@redhat.com>
  85
  86         P0780R2: Resolve lambda init-capture pack grammar.
  87         * parser.c (cp_parser_lambda_introducer): Expect &...x=y rather than
  88         ...&x=y.
  89
  90 2020-02-22  Marek Polacek  <polacek@redhat.com>
  91
  92         PR c++/93882
  93         * decl.c (grokdeclarator): Use %qs in a diagnostic message.
  94
  95 2020-02-21  Martin Sebor  <msebor@redhat.com>
  96
  97         PR gcov-profile/93753
  98         * class.c (check_flexarrays): Tighten up a test for potential members
  99         of anonymous structs or unions.
 100
 101 2020-02-20  Martin Sebor  <msebor@redhat.com>
 102
 103         PR c++/93801
 104         * parser.c (cp_parser_check_class_key): Only handle true C++ class-keys.
 105
 106 2020-02-20  Martin Liska  <mliska@suse.cz>
 107
 108         PR translation/93841
 109         * config/or1k/or1k.opt: Remove superfluous word.
 110         * doc/invoke.texi: Likewise.
 111
 112 2020-02-20  Martin Liska  <mliska@suse.cz>
 113
 114         PR translation/93838
 115         * parser.c (cp_parser_decl_specifier_seq): Remove trailing space.
 116
 117 2020-02-19  Marek Polacek  <polacek@redhat.com>
 118
 119         PR c++/93169 - wrong-code with a non-constexpr constructor.
 120         * constexpr.c (cxx_eval_call_expression): Only set TREE_READONLY
 121         on constant CONSTRUCTORs.
 122
 123 2020-02-15  Marek Polacek  <polacek@redhat.com>
 124
 125         PR c++/93710 - poor diagnostic for array initializer.
 126         * call.c (build_user_type_conversion_1): Use cp_expr_loc_or_input_loc
 127         for an error call.
 128
 129 2020-02-15  Jason Merrill  <jason@redhat.com>
 130
 131         PR c++/92556
 132         * pt.c (any_template_parm_r): Look into lambda body.
 133
 134         PR c++/92583
 135         * pt.c (any_template_parm_r): Remove CONSTRUCTOR handling.
 136
 137 2020-02-14  Jakub Jelinek  <jakub@redhat.com>
 138
 139         PR c++/61414
 140         * class.c (enum_min_precision): Change prec type from int to int &.
 141
 142         PR libstdc++/92906
 143         * cp-tree.h (enum cp_tree_index): Add CPTI_FALLBACK_DFLOAT32_TYPE,
 144         CPTI_FALLBACK_DFLOAT64_TYPE and CPTI_FALLBACK_DFLOAT128_TYPE.
 145         (fallback_dfloat32_type, fallback_dfloat64_type,
 146         fallback_dfloat128_type): Define.
 147         * mangle.c (write_builtin_type): Handle fallback_dfloat*_type like
 148         dfloat*_type_node.
 149         * rtti.c (emit_support_tinfos): Emit DFP typeinfos even when dfp
 150         is disabled for compatibility.
 151
 152 2020-02-13  Jason Merrill  <jason@redhat.com>
 153
 154         PR c++/93713
 155         * name-lookup.c (matching_fn_p): A function does not match a
 156         template.
 157
 158         PR c++/93643
 159         PR c++/91476
 160         * tree.c (decl_linkage): Always lk_none for locals.
 161
 162 2020-02-12  Jason Merrill  <jason@redhat.com>
 163
 164         PR c++/92583
 165         PR c++/92654
 166         * tree.c (cp_walk_subtrees): Walk CONSTRUCTOR types here.
 167         * pt.c (find_parameter_packs_r): Not here.
 168
 169 2020-02-12 Iain Sandoe <iain@sandoe.co.uk>
 170
 171         * coroutines.cc (build_actor_fn): Implement deallocation function
 172         selection per n4849, dcl.fct.def.coroutine bullet 12.
 173         (morph_fn_to_coro): Implement allocation function selection per
 174         n4849, dcl.fct.def.coroutine bullets 9 and 10.
 175
 176 2020-02-12  Marek Polacek  <polacek@redhat.com>
 177
 178         PR c++/93684 - ICE-on-invalid with broken attribute.
 179         * parser.c (cp_parser_std_attribute): Peek a token first before
 180         consuming it.
 181
 182 2020-02-11  Jason Merrill  <jason@redhat.com>
 183
 184         PR c++/93675
 185         * class.c (add_implicitly_declared_members): Use do_friend.
 186         * method.c (implicitly_declare_fn): Fix friend handling.
 187         (decl_remember_implicit_trigger_p): New.
 188         (synthesize_method): Use it.
 189         * decl2.c (mark_used): Use it.
 190
 191 2020-02-11  Jason Merrill  <jason@redhat.com>
 192
 193         PR c++/93650
 194         PR c++/90691
 195         * constexpr.c (maybe_constant_value): Correct earlier change.
 196         (cxx_eval_binary_expression) [SPACESHIP_EXPR]: Pass lval through.
 197         * method.c (genericize_spaceship): Wrap result in TARGET_EXPR.
 198
 199 2020-02-12  Patrick Palka  <ppalka@redhat.com>
 200
 201         PR c++/69448
 202         PR c++/80471
 203         * type-utils.h (find_type_usage): Refactor to take a tree * and to
 204         return a tree *, and update documentation accordingly.
 205         * pt.c (make_auto_1): Set AUTO_IS_DECLTYPE when building a
 206         decltype(auto) node.
 207         (make_constrained_decltype_auto): No need to explicitly set
 208         AUTO_IS_DECLTYPE anymore.
 209         (splice_late_return_type): Use find_type_usage to find and
 210         replace a possibly nested auto node instead of using is_auto.
 211         Check test for is_auto into an assert when deciding whether
 212         to late_return_type.
 213         (type_uses_auto): Adjust the call to find_type_usage.
 214         * parser.c (cp_parser_decltype): No need to explicitly set
 215         AUTO_IS_DECLTYPE anymore.
 216
 217         * error.c (dump_decl) [CONCEPT_DECL]: Use dump_simple_decl.
 218         (dump_simple_decl): Handle standard concept definitions as well as
 219         variable concept definitions.
 220
 221 2020-02-10  Jakub Jelinek  <jakub@redhat.com>
 222
 223         PR other/93641
 224         * error.c (dump_decl_name): Fix up last argument to strncmp.
 225
 226 2020-02-10  Jason Merrill  <jason@redhat.com>
 227
 228         PR c++/93618
 229         * tree.c (array_of_unknown_bound_p): New.
 230         * init.c (perform_member_init): Do nothing for flexible arrays.
 231
 232 2020-02-09  Jakub Jelinek  <jakub@redhat.com>
 233
 234         PR c++/93633
 235         * constexpr.c (cxx_eval_constant_expression): If obj is heap var with
 236         ARRAY_TYPE, use the element type.  Punt if objtype after that is not
 237         a class type.
 238
 239 2020-02-08  Jason Merrill  <jason@redhat.com>
 240
 241         PR c++/90691
 242         * expr.c (fold_for_warn): Call maybe_constant_value.
 243         * constexpr.c (struct constexpr_ctx): Add uid_sensitive bit-field.
 244         (maybe_constant_value): Add uid_sensitive parm.
 245         (get_fundef_copy): Don't copy if it's true.
 246         (cxx_eval_call_expression): Don't instantiate if it's true.
 247         (cxx_eval_outermost_constant_expr): Likewise.
 248
 249         PR c++/92852
 250         * constexpr.c (maybe_constant_value): Don't unshare if the cached
 251         value is the same as the argument.
 252
 253         * typeck.c (maybe_warn_about_returning_address_of_local): Add
 254         location parameter.
 255
 256         * typeck2.c (process_init_constructor): Also clear TREE_SIDE_EFFECTS
 257         if appropriate.
 258
 259 2020-02-08  Jakub Jelinek  <jakub@redhat.com>
 260
 261         PR c++/93549
 262         * constexpr.c (find_array_ctor_elt): If last element has no index,
 263         for flag_checking verify all elts have no index.  If i is within the
 264         elts, return it directly, if it is right after the last elt, append
 265         if NULL index, otherwise force indexes on all elts.
 266         (cxx_eval_store_expression): Allow cep->index to be NULL.
 267
 268 2020-02-07  Marek Polacek  <polacek@redhat.com>
 269
 270         PR c++/92947 - Paren init of aggregates in unevaluated context.
 271         * call.c (build_new_method_call_1): Don't check
 272         cp_unevaluated_operand.  Check the return value of digest_init.
 273
 274 2020-02-06  Jason Merrill  <jason@redhat.com>
 275
 276         PR c++/92654
 277         * tree.c (cp_walk_subtrees): Walk into type template arguments.
 278         * cp-tree.h (TYPE_TEMPLATE_INFO_MAYBE_ALIAS): Use typedef_variant_p
 279         instead of TYPE_ALIAS_P.
 280         * pt.c (push_template_decl_real): Likewise.
 281         (find_parameter_packs_r): Likewise.  Remove dead code.
 282         * error.c (find_typenames_r): Remove dead code.
 283
 284 2020-02-06  Jason Merrill  <jason@redhat.com>
 285
 286         PR c++/92517
 287         * parser.c (cp_parser_constraint_primary_expression): Do the main
 288         parse non-tentatively.
 289
 290 2020-02-06  Marek Polacek  <polacek@redhat.com>
 291
 292         PR c++/93597 - ICE with lambda in operator function.
 293         * name-lookup.c (maybe_save_operator_binding): Check is_overloaded_fn.
 294
 295 2020-02-05  Jason Merrill  <jason@redhat.com>
 296
 297         PR c++/93140
 298         * pt.c (tsubst_decl) [PARM_DECL]: Check cp_unevaluated_operand in
 299         handling of TREE_CHAIN for empty pack.
 300
 301 2020-02-05  Jakub Jelinek  <jakub@redhat.com>
 302
 303         PR c++/93557
 304         * semantics.c (cp_build_vec_convert): Call decay_conversion on arg
 305         prior to passing it to c_build_vec_convert.
 306
 307 2020-02-05  Marek Polacek  <polacek@redhat.com>
 308
 309         PR c++/93559 - ICE with CONSTRUCTOR flags verification.
 310         * decl.c (reshape_init_array_1): Don't reuse a CONSTRUCTOR with
 311         TREE_SIDE_EFFECTS.
 312
 313 2020-02-05  Jason Merrill  <jason@redhat.com>
 314
 315         PR c++/92593
 316         * decl.c (grokdeclarator): Reject field of current class type even
 317         in a template.
 318
 319 2020-02-05  Bin Cheng  <bin.cheng@linux.alibaba.com>
 320
 321         * coroutines.cc (maybe_promote_captured_temps): Increase the index
 322         number for temporary variables' name.
 323
 324 2020-02-05  Jun Ma <JunMa@linux.alibaba.com>
 325
 326         * coroutines.cc (build_co_await): Call convert_from_reference
 327         to wrap co_await_expr with indirect_ref which avoid
 328         reference/non-reference type confusion.
 329
 330         (co_await_expander):  Sink to call_expr if await_resume
 331         is wrapped by indirect_ref.
 332
 333 2020-02-04  Jason Merrill  <jason@redhat.com>
 334
 335         PR c++/93551
 336         * constraint.cc (satisfy_declaration_constraints): Check return
 337         value of push_tinst_level.
 338
 339         PR c++/90951
 340         * constexpr.c (cxx_eval_array_reference): {}-initialize missing
 341         elements instead of value-initializing them.
 342
 343         PR c++/86917
 344         * init.c (perform_member_init): Simplify.
 345         * constexpr.c (cx_check_missing_mem_inits): Allow uninitialized
 346         flexarray.
 347         (cxx_eval_vec_init_1): Handle CONSTRUCTOR.
 348
 349 2020-02-04  Iain Sandoe  <iain@sandoe.co.uk>
 350
 351         * coroutines.cc (find_promise_type): Delete unused forward
 352         declaration.
 353         (struct coroutine_info): Add a bool for no promise type error.
 354         (coro_promise_type_found_p): Only emit the error for a missing
 355         promise once in each affected coroutine.
 356
 357 2020-02-03  Jason Merrill  <jason@redhat.com>
 358
 359         PR c++/66477
 360         * constexpr.c (cxx_eval_constant_expression) [PARM_DECL]: Don't
 361         defer loading the value of a reference.
 362
 363 2020-02-03  Jason Merrill  <jason@redhat.com>
 364
 365         PR c++/91953
 366         * constexpr.c (potential_constant_expression_1) [PARM_DECL]: Allow
 367         empty class type.
 368         [COMPONENT_REF]: A member function reference doesn't use the object
 369         as an rvalue.
 370
 371 2020-02-03  Iain Sandoe  <iain@sandoe.co.uk>
 372
 373         PR c++/93458
 374         * coroutines.cc (struct coroutine_info): Add a bool flag to note
 375         that we emitted an error for a bad function return type.
 376         (get_coroutine_info): Tolerate an unset info table in case of
 377         missing traits.
 378         (find_coro_traits_template_decl): In case of error or if we didn't
 379         find a type template, note we emitted the error and suppress
 380         duplicates.
 381         (find_coro_handle_template_decl): Likewise.
 382         (instantiate_coro_traits): Only check for error_mark_node in the
 383         return from lookup_qualified_name.
 384         (coro_promise_type_found_p): Reorder initialization so that we check
 385         for the traits and their usability before allocation of the info
 386         table.  Check for a suitable return type and emit a diagnostic for
 387         here instead of relying on the lookup machinery.  This allows the
 388         error to have a better location, and means we can suppress multiple
 389         copies.
 390         (coro_function_valid_p): Re-check for a valid promise (and thus the
 391         traits) before proceeding.  Tolerate missing info as a fatal error.
 392
 393 2020-02-03  Jason Merrill  <jason@redhat.com>
 394
 395         PR c++/88256
 396         * cp-gimplify.c (predeclare_vla): New.
 397         (cp_genericize_r) [NOP_EXPR]: Call it.
 398
 399 2020-02-03  Jun Ma <JunMa@linux.alibaba.com>
 400
 401         * coroutines.cc (transform_await_wrapper): Set actor funcion as
 402         new context of label_decl.
 403         (build_actor_fn): Fill new field of await_xform_data.
 404
 405 2020-02-02  Marek Polacek  <polacek@redhat.com>
 406
 407         PR c++/93530 - ICE on invalid alignas in a template.
 408         * decl.c (grokdeclarator): Call cplus_decl_attributes instead of
 409         decl_attributes.
 410
 411 2020-01-31  Jason Merrill  <jason@redhat.com>
 412
 413         PR c++/86216
 414         * semantics.c (process_outer_var_ref): Capture VLAs even in
 415         unevaluated context.
 416
 417         PR c++/14179
 418         * decl.c (reshape_init_array_1): Reuse a single CONSTRUCTOR with
 419         non-aggregate elements.
 420         (reshape_init_array): Add first_initializer_p parm.
 421         (reshape_init_r): Change first_initializer_p from bool to tree.
 422         (reshape_init): Pass init to it.
 423
 424         PR c++/14179
 425         * parser.c (cp_parser_initializer_list): Suppress location wrappers
 426         after 256 elements.
 427
 428 2020-01-29  Jason Merrill  <jason@redhat.com>
 429
 430         PR c++/82521
 431         * pt.c (tsubst_copy_and_build) [EQ_EXPR]: Only suppress warnings if
 432         the expression was dependent before substitution.
 433
 434 2020-01-30  Bin Cheng  <bin.cheng@linux.alibaba.com>
 435
 436         * coroutines.cc (act_des_fn): New.
 437         (morph_fn_to_coro): Call act_des_fn to build actor/destroy decls.
 438         Access promise via actor function's frame pointer argument.
 439         (build_actor_fn, build_destroy_fn): Use frame pointer argument.
 440
 441 2020-01-30  Bin Cheng  <bin.cheng@linux.alibaba.com>
 442
 443         * coroutines.cc (co_await_expander): Handle type conversion case.
 444
 445 2020-01-29  Jason Merrill  <jason@redhat.com>
 446
 447         PR c++/90333
 448         PR c++/89640
 449         PR c++/60503
 450         * parser.c (cp_parser_type_specifier_seq): Don't parse attributes in
 451         a trailing return type.
 452         (cp_parser_lambda_declarator_opt): Parse C++11 attributes before
 453         parens.
 454
 455 2020-01-29  Marek Polacek  <polacek@redhat.com>
 456
 457         PR c++/91754 - Fix template arguments comparison with class NTTP.
 458         * pt.c (class_nttp_const_wrapper_p): New.
 459         (template_args_equal): See through class_nttp_const_wrapper_p
 460         arguments.
 461
 462 2020-01-29  Marek Polacek  <polacek@redhat.com>
 463
 464         PR c++/92948 - Fix class NTTP with template arguments.
 465         * pt.c (convert_nontype_argument): Use IMPLICIT_CONV_EXPR when
 466         converting a value-dependent expression to a class type.
 467         (tsubst_copy) <case VIEW_CONVERT_EXPR>: Allow IMPLICIT_CONV_EXPR
 468         as the result of the tsubst_copy call.
 469
 470 2020-01-29  Jakub Jelinek  <jakub@redhat.com>
 471
 472         PR c++/91118
 473         * cp-gimplify.c (cxx_omp_predetermined_sharing): Return
 474         OMP_CLAUSE_DEFAULT_SHARED for typeinfo decls.
 475
 476 2020-01-28  Jason Merrill  <jason@redhat.com>
 477
 478         PR c++/93442
 479         * parser.c (cp_parser_lambda_expression): Clear in_discarded_stmt.
 480
 481         PR c++/93477
 482         PR c++/91476
 483         * decl2.c (copy_linkage): Do copy DECL_ONE_ONLY and DECL_WEAK.
 484
 485         PR c++/90546
 486         * call.c (build_user_type_conversion_1): Allow a template conversion
 487         returning an rvalue reference to bind directly to an lvalue.
 488
 489         PR c++/90731
 490         * decl.c (grokdeclarator): Propagate eh spec from typedef.
 491
 492 2020-01-28  Martin Liska  <mliska@suse.cz>
 493
 494         PR c++/92440
 495         * pt.c (redeclare_class_template): Group couple of
 496         errors and inform messages with auto_diagnostic_group.
 497
 498 2020-01-28  Martin Liska  <mliska@suse.cz>
 499
 500         PR c++/92440
 501         * pt.c (redeclare_class_template): Use inform
 502         for the second location.
 503
 504 2020-01-27  Jason Merrill  <jason@redhat.com>
 505
 506         PR c++/90966
 507         * pt.c (tsubst_copy) [STRING_CST]: Don't use fold_convert.
 508
 509 2020-01-27  Iain Sandoe  <iain@sandoe.co.uk>
 510
 511         PR c++/93443
 512         * coroutines.cc (morph_fn_to_coro): Check the ramp return
 513         value when it is constructed from the 'get return object'.
 514
 515 2020-01-27  Nathan Sidwell  <nathan@acm.org>
 516
 517         PR c++/91826
 518         * name-lookup.c (is_ancestor): Allow CHILD to be a namespace alias.
 519
 520 2020-01-26  Jason Merrill  <jason@redhat.com>
 521
 522         PR c++/90992
 523         * except.c (maybe_noexcept_warning): Check DECL_IN_SYSTEM_HEADER and
 524         temporarily enable -Wsystem-headers.  Change second warning to
 525         conditional inform.
 526
 527         PR c++/90997
 528         * semantics.c (finish_call_expr): Don't call
 529         instantiate_non_dependent_expr before warn_for_memset.
 530
 531 2020-01-25  Marek Polacek  <polacek@redhat.com>
 532
 533         PR c++/93414 - poor diagnostic for dynamic_cast in constexpr context.
 534         * constexpr.c (cxx_eval_dynamic_cast_fn): Add a reference
 535         dynamic_cast diagnostic.
 536
 537 2020-01-24  Jason Merrill  <jason@redhat.com>
 538
 539         PR c++/93400 - ICE with constrained friend.
 540         * constraint.cc (maybe_substitute_reqs_for): New.
 541         * decl.c (function_requirements_equivalent_p): Call it.
 542         * pt.c (tsubst_friend_function): Only substitute
 543         TEMPLATE_PARMS_CONSTRAINTS.
 544         (tsubst_template_parms): Copy constraints.
 545
 546 2020-01-24  Jason Merrill  <jason@redhat.com>
 547
 548         PR c++/93279 - ICE with lambda in member operator.
 549         * name-lookup.c (maybe_save_operator_binding): Don't remember
 550         class-scope bindings.
 551
 552 2020-01-24  Jason Merrill  <jason@redhat.com>
 553
 554         PR c++/93377 - ICE with member alias in constraint.
 555         * pt.c (any_template_parm_r): Look at template arguments for all
 556         aliases, not only alias templates.
 557
 558 2020-01-24  Marek Polacek  <polacek@redhat.com>
 559
 560         PR c++/93299 - ICE in tsubst_copy with parenthesized expression.
 561         * pt.c (tsubst_copy): Handle a REF_PARENTHESIZED_P VIEW_CONVERT_EXPR.
 562
 563 2020-01-24  Jason Merrill  <jason@redhat.com>
 564
 565         PR c++/92852 - ICE with generic lambda and reference var.
 566         * constexpr.c (maybe_constant_value): Likewise.
 567
 568 2020-01-23  Paolo Carlini  <paolo.carlini@oracle.com>
 569
 570         PR c++/92804
 571         * parser.c (cp_parser_nested_name_specifier_opt): Properly
 572         diagnose concept-ids.
 573
 574 2020-01-23  Jason Merrill  <jason@redhat.com>
 575
 576         PR c++/93331 - ICE with __builtin_strchr.
 577         * constexpr.c (cxx_eval_builtin_function_call): Use the original
 578         argument if we didn't manage to extract a STRING_CST.
 579
 580         PR c++/93345 - ICE with defaulted dtor and template.
 581         PR c++/33799
 582         * decl.c (cxx_maybe_build_cleanup): Don't try to set
 583         throwing_cleanup in a template.
 584
 585 2020-01-22  Marek Polacek  <polacek@redhat.com>
 586
 587         PR c++/92907 - noexcept does not consider "const" in member functions.
 588         * g++.dg/cpp0x/noexcept56.C: New test.
 589
 590 2020-01-22  Marek Polacek  <polacek@redhat.com>
 591
 592         PR c++/93324 - ICE with -Wall on constexpr if.
 593         * semantics.c (is_std_constant_evaluated_p): Check fndecl.
 594
 595 2020-01-22  Patrick Palka  <ppalka@redhat.com>
 596
 597         * constraint.cc (get_mapped_args): Avoid using auto_vec
 598         as a vector element.  Release the vectors inside the lists
 599         vector.
 600         * parser.c (cp_literal_operator_id): Free the buffer.
 601
 602 2020-01-22  Jun Ma  <JunMa@linux.alibaba.com>
 603
 604         * coroutines.cc (finish_co_await_expr): Add error check on return
 605         value of build_co_await.
 606         (finish_co_yield_expr,): Ditto.
 607
 608 2020-01-22  Jun Ma  <JunMa@linux.alibaba.com>
 609
 610         * coroutines.cc (lookup_awaitable_member): Lookup an awaitable member.
 611         (lookup_promise_method): Emit diagnostic when get NULL_TREE back only.
 612         (build_co_await): Use lookup_awaitable_member instead of lookup_member.
 613
 614 2020-01-21  Jason Merrill  <jason@redhat.com>
 615
 616         PR c++/60855 - ICE with sizeof VLA capture.
 617         * lambda.c (is_lambda_ignored_entity): Don't look past VLA capture.
 618
 619         PR c++/90732 - ICE with VLA capture and generic lambda.
 620         * pt.c (tsubst_lambda_expr): Repeat add_capture for VLAs.
 621
 622 2020-01-21  Iain Sandoe  <iain@sandoe.co.uk>
 623             Bin Cheng  <bin.cheng@linux.alibaba.com>
 624
 625         * coroutines.cc (coro_promise_type_found_p): Check for NULL return
 626         from complete_type_or_else.
 627         (register_param_uses): Likewise.
 628         (build_co_await): Do not try to use complete_type_or_else for void
 629         types, otherwise for incomplete types, check for NULL return from
 630         complete_type_or_else.
 631
 632 2020-01-21  Jason Merrill  <jason@redhat.com>
 633
 634         PR c++/91476 - anon-namespace reference temp clash between TUs.
 635         * decl2.c (copy_linkage): Factor out of get_guard.
 636         * call.c (make_temporary_var_for_ref_to_temp): Use it.
 637         * decl.c (cp_finish_decomp): Use it.
 638         (cp_finish_decl): determine_visibility sooner.
 639
 640 2020-01-21  Bin Cheng  <bin.cheng@linux.alibaba.com>
 641
 642         * coroutines.cc (finish_co_await_expr): Set return value flag.
 643         (finish_co_yield_expr, morph_fn_to_coro): Ditto.
 644
 645 2020-01-19  Jason Merrill  <jason@redhat.com>
 646
 647         PR c++/33799 - destroy return value, take 2.
 648         * cp-tree.h (current_retval_sentinel): New macro.
 649         (struct language_function): Add throwing_cleanup bitfield.
 650         * decl.c (cxx_maybe_build_cleanup): Set it.
 651         * except.c (maybe_set_retval_sentinel)
 652         (maybe_splice_retval_cleanup): New functions.
 653         * parser.c (cp_parser_compound_statement): Call
 654         maybe_splice_retval_cleanup.
 655         * typeck.c (check_return_expr): Call maybe_set_retval_sentinel.
 656
 657         * parser.c (cp_parser_lambda_body): Use cp_parser_function_body.
 658
 659 2020-01-18  Jakub Jelinek  <jakub@redhat.com>
 660
 661         * coroutines.cc (get_fn_local_identifier): Fix NO_DOT_IN_LABEL
 662         but non-NO_DOLLAR_IN_LABEL case build.
 663
 664 2020-01-18  Iain Sandoe  <iain@sandoe.co.uk>
 665
 666         * Make-lang.in: Add coroutines.o.
 667         * cp-tree.h (lang_decl-fn): coroutine_p, new bit.
 668         (DECL_COROUTINE_P): New.
 669         * lex.c (init_reswords): Enable keywords when the coroutine flag
 670         is set,
 671         * operators.def (co_await): New operator.
 672         * call.c (add_builtin_candidates): Handle CO_AWAIT_EXPR.
 673         (op_error): Likewise.
 674         (build_new_op_1): Likewise.
 675         (build_new_function_call): Validate coroutine builtin arguments.
 676         * constexpr.c (potential_constant_expression_1): Handle
 677         CO_AWAIT_EXPR, CO_YIELD_EXPR, CO_RETURN_EXPR.
 678         * coroutines.cc: New file.
 679         * cp-objcp-common.c (cp_common_init_ts): Add CO_AWAIT_EXPR,
 680         CO_YIELD_EXPR, CO_RETRN_EXPR as TS expressions.
 681         * cp-tree.def (CO_AWAIT_EXPR, CO_YIELD_EXPR, (CO_RETURN_EXPR): New.
 682         * cp-tree.h (coro_validate_builtin_call): New.
 683         * decl.c (emit_coro_helper): New.
 684         (finish_function): Handle the case when a function is found to
 685         be a coroutine, perform the outlining and emit the outlined
 686         functions. Set a bit to signal that this is a coroutine component.
 687         * parser.c (enum required_token): New enumeration RT_CO_YIELD.
 688         (cp_parser_unary_expression): Handle co_await.
 689         (cp_parser_assignment_expression): Handle co_yield.
 690         (cp_parser_statement): Handle RID_CO_RETURN.
 691         (cp_parser_jump_statement): Handle co_return.
 692         (cp_parser_operator): Handle co_await operator.
 693         (cp_parser_yield_expression): New.
 694         (cp_parser_required_error): Handle RT_CO_YIELD.
 695         * pt.c (tsubst_copy): Handle CO_AWAIT_EXPR.
 696         (tsubst_expr): Handle CO_AWAIT_EXPR, CO_YIELD_EXPR and
 697         CO_RETURN_EXPRs.
 698         * tree.c (cp_walk_subtrees): Likewise.
 699
 700 2020-01-17  Jason Merrill  <jason@redhat.com>
 701
 702         PR c++/92531 - ICE with noexcept(lambda).
 703         * pt.c (uses_template_parms): Don't try to enumerate all the
 704         expression cases.
 705
 706 2020-01-17  Jakub Jelinek  <jakub@redhat.com>
 707
 708         PR c++/93228
 709         * parser.c (cp_parser_template_name): Look up deprecated attribute
 710         in DECL_TEMPLATE_RESULT or its type's attributes.
 711
 712 2020-01-16  Jason Merrill  <jason@redhat.com>
 713
 714         PR c++/93286 - ICE with __is_constructible and variadic template.
 715         * pt.c (tsubst) [TREE_LIST]: Handle pack expansion.
 716         (tsubst_copy_and_build) [TRAIT_EXPR]: Always use tsubst for type2.
 717
 718         PR c++/93280 - ICE with aggregate assignment and DMI.
 719         * init.c (get_nsdmi): Set TARGET_EXPR_DIRECT_INIT_P here.
 720         * typeck2.c (digest_nsdmi_init): Not here.
 721
 722 2020-01-15  Paolo Carlini  <paolo.carlini@oracle.com>
 723
 724         PR c++/91073
 725         * cp-tree.h (is_constrained_auto): New.
 726         * parser.c (cp_parser_maybe_commit_to_declaration): Correctly
 727         handle concept-check expressions; take a cp_decl_specifier_seq*
 728         instead of a bool.
 729         (cp_parser_condition): Update call.
 730         (cp_parser_simple_declaration): Likewise.
 731         (cp_parser_placeholder_type_specifier): Correctly handle
 732         concept-check expressions.
 733
 734 2020-01-15  Jason Merrill  <jason@redhat.com>
 735
 736         Revert
 737         PR c++/33799 - destroy return value if local cleanup throws.
 738         * cp-tree.h (current_retval_sentinel): New macro.
 739         * decl.c (start_preparsed_function): Set up cleanup for retval.
 740         * typeck.c (check_return_expr): Set current_retval_sentinel.
 741
 742         PR c++/93257 - consteval void function.
 743         * constexpr.c (verify_constant): Allow void_node.
 744
 745         PR c++/92871 - bad code with xvalue and GNU ?: extension.
 746         * call.c (prevent_lifetime_extension): New.
 747         (build_conditional_expr_1): Use it.
 748
 749 2020-01-14  Nathan Sidwell  <nathan@acm.org>
 750
 751         PR c++/90916
 752         * pt.c (retrieve_specialization): Use get_template_info, not open
 753         coding access.
 754
 755         PR c++/90916
 756         * pt.c (retrieve_specialization): Get the TI from the decl or the
 757         classtype as appropriate.
 758
 759 2020-01-14  David Malcolm  <dmalcolm@redhat.com>
 760
 761         * cp-gimplify.c (source_location_table_entry_hash::empty_zero_p):
 762         New static constant.
 763         * cp-tree.h (named_decl_hash::empty_zero_p): Likewise.
 764         (struct named_label_hash::empty_zero_p): Likewise.
 765         * decl2.c (mangled_decl_hash::empty_zero_p): Likewise.
 766
 767 2020-01-14  Jason Merrill  <jason@redhat.com>
 768
 769         PR c++/92590 - wrong handling of inherited default ctor.
 770         * class.c (add_method): A constrained inherited ctor doesn't hide an
 771         implicit derived ctor.
 772         Revert:
 773         PR c++/92552 - ICE with inherited constrained default ctor.
 774         * pt.c (instantiate_class_template_1): Copy
 775         TYPE_HAS_USER_CONSTRUCTOR.
 776         PR c++/91930 - ICE with constrained inherited default ctor.
 777         * name-lookup.c (do_class_using_decl): Set TYPE_HAS_USER_CONSTRUCTOR
 778         for inherited constructor.
 779         PR c++/92594 - ICE with inherited trivial default ctor.
 780         * method.c (trivial_fn_p): Treat an inherited default constructor
 781         like a normal default constructor.
 782
 783         PR c++/92594 - ICE with inherited trivial default ctor.
 784         * method.c (trivial_fn_p): Treat an inherited default constructor
 785         like a normal default constructor.
 786
 787         PR c++/92009 - ICE with punning of typeid.
 788         * rtti.c (get_tinfo_desc): Call xref_basetypes.
 789         * constexpr.c (cxx_fold_indirect_ref): Don't strip
 790         REINTERPRET_CAST_P.
 791
 792 2020-01-13  Jason Merrill  <jason@redhat.com>
 793
 794         PR c++/92746 - ICE with noexcept of function concept check.
 795         * except.c (check_noexcept_r): Handle concept-check.
 796
 797         PR c++/92582 - ICE with member template as requirement.
 798         * pt.c (struct find_template_parameter_info): Add ctx_parms.
 799         (any_template_parm_r): Handle TEMPLATE_DECL.
 800         (find_template_parameters): Take parms instead of their depth.
 801         * constraint.cc (build_parameter_mapping): Pass them.
 802
 803         PR c++/33799 - destroy return value if local cleanup throws.
 804         * cp-tree.h (current_retval_sentinel): New macro.
 805         * decl.c (start_preparsed_function): Set up cleanup for retval.
 806         * typeck.c (check_return_expr): Set current_retval_sentinel.
 807
 808         PR c++/93238 - short right-shift with enum.
 809         * typeck.c (cp_build_binary_op): Use folded op1 for short_shift.
 810
 811 2020-01-10  Jason Merrill  <jason@redhat.com>
 812
 813         * typeck.c (cp_build_binary_op): Restore short_shift code.
 814
 815         PR c++/93143 - incorrect tree sharing with constexpr.
 816         * constexpr.c (cxx_eval_outermost_constant_expr): Don't assume
 817         CONSTRUCTORs are already unshared.
 818
 819         PR c++/93173 - incorrect tree sharing.
 820         PR c++/93033
 821         * cp-gimplify.c (cp_gimplify_init_expr, cp_gimplify_expr): Use
 822         copy_if_shared after cp_genericize_tree.
 823         * typeck2.c (split_nonconstant_init): Don't unshare here.
 824
 825 2020-01-08  Jason Merrill  <jason@redhat.com>
 826
 827         * cp-gimplify.c (cp_gimplify_expr) [TARGET_EXPR]: Check
 828         TARGET_EXPR_DIRECT_INIT_P.
 829         * constexpr.c (cxx_eval_constant_expression): Likewise.
 830
 831 2020-01-08  Jason Merrill  <jason@redhat.com>
 832
 833         PR c++/91369 - constexpr destructor and member initializer.
 834         * constexpr.c (cxx_eval_store_expression): Look through TARGET_EXPR
 835         when not preevaluating.
 836
 837 2020-01-08  Jason Merrill  <jason@redhat.com>
 838
 839         * constexpr.c (cxx_eval_call_expression): Remove DECL_BY_REFERENCE
 840         support.
 841
 842 2020-01-07  Paolo Carlini  <paolo.carlini@oracle.com>
 843
 844         * init.c (build_new): Add location_t parameter and use it throughout.
 845         (build_raw_new_expr): Likewise.
 846         * parser.c (cp_parser_new_expression): Pass the combined_loc.
 847         * pt.c (tsubst_copy_and_build): Adjust call.
 848         * cp-tree.h: Update declarations.
 849
 850 2020-01-07  Jason Merrill  <jason@redhat.com>
 851
 852         PR c++/47877 - -fvisibility-inlines-hidden and member templates.
 853         * decl2.c (determine_visibility): -fvisibility-inlines-hidden beats
 854         explicit class visibility for a template.
 855
 856 2020-01-07  Richard Sandiford  <richard.sandiford@arm.com>
 857
 858         * mangle.c (mangle_type_attribute_p): New function, split out from...
 859         (write_CV_qualifiers_for_type): ...here.  Don't mangle attributes
 860         that contain a space.
 861
 862 2020-01-07  Jakub Jelinek  <jakub@redhat.com>
 863
 864         PR c++/91369
 865         * constexpr.c (struct constexpr_global_ctx): Add heap_alloc_count
 866         member, initialize it to zero in ctor.
 867         (cxx_eval_call_expression): Bump heap_dealloc_count when deleting
 868         a heap object.  Don't cache calls to functions which allocate some
 869         heap objects and don't deallocate them or deallocate some heap
 870         objects they didn't allocate.
 871
 872 2020-01-06  Jason Merrill  <jason@redhat.com>
 873
 874         PR c++/92552 - ICE with inherited constrained default ctor.
 875         * pt.c (instantiate_class_template_1): Copy
 876         TYPE_HAS_USER_CONSTRUCTOR.
 877         * class.c (one_inherited_ctor): Don't set it here.
 878
 879 2020-01-06  Andrew Sutton  <asutton@lock3software.com>
 880
 881         PR c++/92739 - parsing requires clause with attributes.
 882         * parser.c (cp_parser_constraint_requires_parens): Exclude
 883         attributes as postfix expressions.
 884
 885 2020-01-05  Jakub Jelinek  <jakub@redhat.com>
 886
 887         PR c++/93138
 888         * parser.c (cp_parser_check_class_key): Disable access checks for the
 889         simple name lookup.
 890         (cp_parser_maybe_warn_enum_key): Likewise.  Return early if
 891         !warn_redundant_tags.
 892
 893 2010-01-05  Jakub Jelinek  <jakub@redhat.com>
 894
 895         PR c++/93046
 896         * cp-gimplify.c (cp_gimplify_init_expr): Don't look through
 897         TARGET_EXPR if it has been gimplified already.
 898
 899 2020-01-03  Jason Merrill  <jason@redhat.com>
 900
 901         PR c++/93033 - incorrect tree node sharing with array init.
 902         * typeck2.c (split_nonconstant_init): Unshare non-decl.
 903         * cp-gimplify.c (cp_gimplify_init_expr): Only split if -fexceptions.
 904
 905 2020-01-02  Jason Merrill  <jason@redhat.com>
 906
 907         * pt.c (invalid_nontype_parm_type_p): Reject class placeholder in
 908         C++17.
 909
 910 2020-01-02  Jakub Jelinek  <jakub@redhat.com>
 911
 912         PR c/90677
 913         * cp-objcp-common.c (identifier_global_tag): Return NULL_TREE if name
 914         has not been found, rather than error_mark_node.
 915
 916 2020-01-01  Jakub Jelinek  <jakub@redhat.com>
 917
 918         Update copyright years.
 919 \f
 920 Copyright (C) 2020 Free Software Foundation, Inc.
 921
 922 Copying and distribution of this file, with or without modification,
 923 are permitted in any medium without royalty provided the copyright
 924 notice and this notice are preserved.