[Bug c/24293] Undefined behaviour not diagnosed with -fsyntax-only

[prathamesh3492 at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=24293

--- Comment #5 from prathamesh3492 at gcc dot gnu.org ---
Author: prathamesh3492
Date: Wed Jan 20 16:25:23 2016
New Revision: 232622

URL: https://gcc.gnu.org/viewcvs?rev=232622&root=gcc&view=rev
Log:
2016-01-15  Prathamesh Kulkarni  <prathamesh.kulka...@linaro.org>

        PR c/24293
        * c-tree.h (incomplete_record_decls): Declare.
        * c-parser.c (incomplete_record_decls): Define.
        (c_parser_translation_unit): Iterate through incomplete_record_decls
and
        report error if any decl has zero size.
        * c-decl.c (finish_decl): Append static decl with incomplete
struct/union
        or enum type to incomplete_record_decls.

testsuite/
        * gcc.dg/pr24293.c: New test.
        * gcc.dg/Wcxx-compat-8.c: Adjust to accept error due to
        incomplete struct type.
        * gcc.dg/declspec-1.c: Likewise.
        * gcc.dg/pr63549.c: Likewise.


Added:
    trunk/gcc/testsuite/gcc.dg/pr24293.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
    trunk/gcc/testsuite/gcc.dg/Wcxx-compat-8.c
    trunk/gcc/testsuite/gcc.dg/declspec-1.c
    trunk/gcc/testsuite/gcc.dg/pr63549.c