[Bug lto/61886] [4.9/5/6 Regression] LTO breaks fread with _FORTIFY_SOURCE=2

[hubicka at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61886

--- Comment #51 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Author: hubicka
Date: Thu Dec 10 23:57:15 2015
New Revision: 231548

URL: https://gcc.gnu.org/viewcvs?rev=231548&root=gcc&view=rev
Log:
        PR ipa/61886
        * lto-symtab.c (lto_symtab_merge_p): Avoid merging across different
        values of error and warning attributes.
        * gcc.dg/lto/pr61886_0.c: New testcase

Added:
    trunk/gcc/testsuite/gcc.dg/lto/pr61886_0.c
Modified:
    trunk/gcc/lto/ChangeLog
    trunk/gcc/lto/lto-symtab.c
    trunk/gcc/testsuite/ChangeLog