[Bug lto/56168] [4.8 Regression] GCC seems to disregard -fno-builtin when compiling with LTO

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56168



--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> 2013-02-04 
12:19:34 UTC ---

Author: rguenth

Date: Mon Feb  4 12:19:25 2013

New Revision: 195709



URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=195709

Log:

2013-02-04  Richard Guenther  <rguent...@suse.de>



    PR lto/56168

    * lto-symtab.c (lto_symtab_merge_decls_1): Make non-builtin

    node prevail as last resort.

    (lto_symtab_merge_decls): Remove guard on LTRANS here.

    (lto_symtab_prevailing_decl): Builtins are their own prevailing

    decl.



    lto/

    * lto.c (read_cgraph_and_symbols): Do not call lto_symtab_merge_decls

    or lto_fixup_decls at LTRANS time.



    * gcc.dg/lto/pr56168_0.c: New testcase.

    * gcc.dg/lto/pr56168_1.c: Likewise.



Added:

    trunk/gcc/testsuite/gcc.dg/lto/pr56168_0.c

    trunk/gcc/testsuite/gcc.dg/lto/pr56168_1.c

Modified:

    trunk/gcc/ChangeLog

    trunk/gcc/lto-symtab.c

    trunk/gcc/lto/ChangeLog

    trunk/gcc/lto/lto.c

    trunk/gcc/testsuite/ChangeLog