[Bug c/70143] [6 Regression] false strict-aliasing warning

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70143

--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Mar  9 14:01:16 2016
New Revision: 234084

URL: https://gcc.gnu.org/viewcvs?rev=234084&root=gcc&view=rev
Log:
2016-03-09  Richard Biener  <rguent...@suse.de>

        c-family/
        PR c/70143
        * c-common.c (strict_aliasing_warning): Add back
        alias_sets_conflict_p check.

        * gcc.dg/Wstrict-aliasing-bogus-upcast.c: New testcase.
        * gcc.dg/Wstrict-aliasing-struct-with-char-member.c: Likewise.
        * gcc.dg/Wstrict-aliasing-struct-member.c: Remove again.

Added:
    trunk/gcc/testsuite/gcc.dg/Wstrict-aliasing-bogus-upcast.c
    trunk/gcc/testsuite/gcc.dg/Wstrict-aliasing-struct-with-char-member.c
Removed:
    trunk/gcc/testsuite/gcc.dg/Wstrict-aliasing-struct-member.c
Modified:
    trunk/gcc/c-family/ChangeLog
    trunk/gcc/c-family/c-common.c
    trunk/gcc/testsuite/ChangeLog