http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55570



Marek Polacek <mpolacek at gcc dot gnu.org> changed:



           What    |Removed                     |Added

----------------------------------------------------------------------------

             Status|UNCONFIRMED                 |NEW

   Last reconfirmed|                            |2012-12-03

                 CC|                            |mpolacek at gcc dot gnu.org

     Ever Confirmed|0                           |1



--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> 2012-12-03 
08:57:59 UTC ---

Confirmed.  Reproduced with trunk:

pr55570.c:1:1: internal compiler error: Segmentation fault

 char array[16] __attribute__((aligned (SOME_NOT_DEFINED_MACRO)));

 ^

0x8dc29f crash_signal

    /home/marek/src/gcc/gcc/toplev.c:334

0x54aa54 check_user_alignment(tree_node const*, bool)

    /home/marek/src/gcc/gcc/c-family/c-common.c:7264

0x56bb8b handle_aligned_attribute

    /home/marek/src/gcc/gcc/c-family/c-common.c:7391

0x4de269 decl_attributes(tree_node**, tree_node*, int)

    /home/marek/src/gcc/gcc/attribs.c:547

0x4f6d58 start_decl(c_declarator*, c_declspecs*, bool, tree_node*)

    /home/marek/src/gcc/gcc/c/c-decl.c:4113

0x532954 c_parser_declaration_or_fndef

    /home/marek/src/gcc/gcc/c/c-parser.c:1664

0x53716d c_parser_external_declaration

    /home/marek/src/gcc/gcc/c/c-parser.c:1363

0x537b97 c_parser_translation_unit

    /home/marek/src/gcc/gcc/c/c-parser.c:1251

0x537b97 c_parse_file()

    /home/marek/src/gcc/gcc/c/c-parser.c:10889

0x57c0f4 c_common_parse_file()

    /home/marek/src/gcc/gcc/c-family/c-opts.c:1023

Please submit a full bug report,

with preprocessed source if appropriate.

Please include the complete backtrace with any bug report.

See <http://gcc.gnu.org/bugs.html> for instructions.



With 4.6 we did:

pr55570.c:1:1: error: requested alignment is not a constant

which was better than just segfaulting.

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