[Bug middle-end/36282] [4.7/4.8 Regression] Spurious warning "asm declaration ignored due to conflict with previous rename"

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36282

--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Apr 10 07:47:55 2014
New Revision: 209263

URL: http://gcc.gnu.org/viewcvs?rev=209263&root=gcc&view=rev
Log:
    Backport from mainline
    2014-03-13  Jakub Jelinek  <jakub@redhat.com>

    PR middle-end/36282
    * c-pragma.c (apply_pragma_weak): Only look at
    TREE_SYMBOL_REFERENCED (DECL_ASSEMBLER_NAME (decl)) if
    DECL_ASSEMBLER_NAME_SET_P (decl).
    (maybe_apply_pending_pragma_weaks): Exit early if
    vec_safe_is_empty (pending_weaks) rather than only when
    !pending_weaks.
    (maybe_apply_pragma_weak): Likewise.  If !DECL_ASSEMBLER_NAME_SET_P,
    set assembler name back to NULL afterwards.

    * c-c++-common/pr36282-1.c: New test.
    * c-c++-common/pr36282-2.c: New test.
    * c-c++-common/pr36282-3.c: New test.
    * c-c++-common/pr36282-4.c: New test.

Added:
    branches/gcc-4_8-branch/gcc/testsuite/c-c++-common/pr36282-1.c
    branches/gcc-4_8-branch/gcc/testsuite/c-c++-common/pr36282-2.c
    branches/gcc-4_8-branch/gcc/testsuite/c-c++-common/pr36282-3.c
    branches/gcc-4_8-branch/gcc/testsuite/c-c++-common/pr36282-4.c
Modified:
    branches/gcc-4_8-branch/gcc/c-family/ChangeLog
    branches/gcc-4_8-branch/gcc/c-family/c-pragma.c
    branches/gcc-4_8-branch/gcc/testsuite/ChangeLog