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[Bug target/58502] ICE with attribute(target) and -flto


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58502

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |x86_64-*-*, i?86-*-*
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2013-09-23
                 CC|                            |tmsriram at google dot com
          Component|lto                         |target
     Ever confirmed|0                           |1

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
#1  0x0000000000c34951 in tree_is_indexable (t=<result_decl 0x7ffff6e810f0>)
    at /space/rguenther/src/svn/trunk/gcc/lto-streamer-out.c:131
131         return variably_modified_type_p (TREE_TYPE (DECL_CONTEXT (t)),
NULL_TREE);
(gdb) call debug_tree (t)
 <result_decl 0x7ffff6e810f0 D.2277
    type <pointer_type 0x7ffff6d1fc78
        type <void_type 0x7ffff6d1fbd0 void VOID
            align 8 symtab 0 alias set -1 canonical type 0x7ffff6d1fbd0
            pointer_to_this <pointer_type 0x7ffff6d1fc78>>
        public unsigned DI
        size <integer_cst 0x7ffff6d150c0 constant 64>
        unit size <integer_cst 0x7ffff6d150e0 constant 8>
        align 64 symtab 0 alias set -1 canonical type 0x7ffff6d1fc78
        pointer_to_this <pointer_type 0x7ffff6d2eb28>>
    unsigned ignored DI file (null) line 0 col 0 size <integer_cst
0x7ffff6d150c0 64> unit size <integer_cst 0x7ffff6d150e0 8>
    align 64>
(gdb) call t->decl_minimal.context 
$1 = <tree 0x0>

it seems the decl doesn't have DECL_CONTEXT set despite being a RESULT_DECL.

(gdb) p function
$2 = <function_decl 0x7ffff6e7af00 _Z3foov.resolver>

target bug:

  /* Build result decl and add to function_decl. */
  t = build_decl (UNKNOWN_LOCATION, RESULT_DECL, NULL_TREE, ptr_type_node);
  DECL_ARTIFICIAL (t) = 1;
  DECL_IGNORED_P (t) = 1;
  DECL_RESULT (decl) = t;

which fails to set DECL_CONTEXT (t) = decl.


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