[Bug c/67580] Improve error message on missing "struct" tag

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67580

--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Tue Sep 15 17:19:11 2015
New Revision: 227803

URL: https://gcc.gnu.org/viewcvs?rev=227803&root=gcc&view=rev
Log:
        PR c/67580
        * c-decl.c (tag_exists_p): New function.
        * c-parser.c (c_parser_declaration_or_fndef): Give a hint when
        struct/union/enum keywords are missing.
        * c-tree.h (tag_exists_p): Declare.

        * gcc.dg/pr67580.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/pr67580.c
Modified:
    trunk/gcc/c/ChangeLog
    trunk/gcc/c/c-decl.c
    trunk/gcc/c/c-parser.c
    trunk/gcc/c/c-tree.h
    trunk/gcc/testsuite/ChangeLog