[Bug ld/16467] ld fails with internal error in elf_x86_64_relocate_section when .symver and ifunc magic is used

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=16467

--- Comment #16 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot 
gnu.org> ---
The master branch has been updated by Alan Modra <address@hidden>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=5b677558bc6c7b2477bb33c709e6017e68e7ae8c

commit 5b677558bc6c7b2477bb33c709e6017e68e7ae8c
Author: Alan Modra <address@hidden>
Date:   Mon May 30 09:43:44 2016 +0930

    Revert PR16467 change

    This reverts the pr16467 change, which was incorrect due to faulty
    analysis of the pr16467 testcase.  The failure was not due to a
    mismatch in symbol type (ifunc/non-ifunc) but due to a symbol loop
    being set up.

    See https://sourceware.org/ml/binutils/2016-06/msg00013.html for some
    rambling on versioned symbols and ELF shared library symbol overriding
    that explain this patch.

    bfd/
        PR ld/20159
        PR ld/16467
        * elflink.c (_bfd_elf_merge_symbol): Revert PR16467 change.
        (_bfd_elf_add_default_symbol): Don't indirect to/from defined
        symbol given a version by a script different to the version
        of the symbol being added.
        (elf_link_add_object_symbols): Use _bfd_elf_strtab_save and
        _bfd_elf_strtab_restore.  Don't fudge dynstr references.
        * elf-strtab.c (_bfd_elf_strtab_restore_size): Delete.
        (struct strtab_save): New.
        (_bfd_elf_strtab_save, _bfd_elf_strtab_restore): New functions.
        * elf-bfd.h (_bfd_elf_strtab_restore_size): Delete.
        (_bfd_elf_strtab_save, _bfd_elf_strtab_restore): Declare.

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