[Bug lto/40903] LTO doesn't merge common sections properly

[rguenth at gcc dot gnu dot org]

------- Comment #7 from rguenth at gcc dot gnu dot org  2009-07-30 16:24 -------
Subject: Bug 40903

Author: rguenth
Date: Thu Jul 30 16:24:05 2009
New Revision: 150262

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=150262
Log:
2009-07-30  Richard Guenther  <rguenther@suse.de>

        PR lto/40903
        * lto-symtab.c (lto_symtab_compatible): Only warn for mismatched
        types.
        (lto_symtab_merge_decl): For decls we cannot merge chain them
        appropriately in the symtab entry.
        (lto_symtab_prevailing_decl): Return a matching entry from the
        symtab chain.
        * lto.c (read_cgraph_and_symbols): After fixing up decls choose
        the largest decl for output and free TREE_CHAIN for further
        use.

        * gcc.dg/lto/20090729_0.c: New testcase.
        * gcc.dg/lto/20090729_1.c: Likewise.

Added:
    branches/lto/gcc/testsuite/gcc.dg/lto/20090729_0.c
    branches/lto/gcc/testsuite/gcc.dg/lto/20090729_1.c
Modified:
    branches/lto/gcc/ChangeLog.lto
    branches/lto/gcc/lto-symtab.c
    branches/lto/gcc/lto/ChangeLog
    branches/lto/gcc/lto/lto.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40903