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[Bug ld/21334] [MIPS] Undefined hidden symbols cause assertion failure b


From: cvs-commit at gcc dot gnu.org
Subject: [Bug ld/21334] [MIPS] Undefined hidden symbols cause assertion failure bfd/elfxx-mips.c:3860
Date: Wed, 26 Apr 2017 21:37:46 +0000

https://sourceware.org/bugzilla/show_bug.cgi?id=21334

--- Comment #11 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot 
gnu.org> ---
The binutils-2_28-branch branch has been updated by Maciej W. Rozycki
<address@hidden>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=1be438fd16d8a42e2a09d7b932da27c0e36094b6

commit 1be438fd16d8a42e2a09d7b932da27c0e36094b6
Author: Maciej W. Rozycki <address@hidden>
Date:   Wed Apr 26 22:23:44 2017 +0100

    PR ld/21334: Always call `_bfd_elf_link_renumber_dynsyms' if required

    Complement commit e17b0c351f0b ("MIPS/BFD: Respect the ELF gABI dynamic
    symbol table sort requirement") and correct an inconsistency in dynamic
    symbol accounting data causing an assertion failure in the MIPS backend:

    ld: BFD (GNU Binutils) 2.28.51.20170330 assertion fail
    ../../binutils-gdb/bfd/elfxx-mips.c:3860

    in the course of making a GOT entry in a static binary to satisfy a GOT
    relocation present in input, due to the local dynamic symbol count not
    having been established.

    To do so let backends request `_bfd_elf_link_renumber_dynsyms' to be
    always called, rather than where a dynamic binary is linked only, and
    then make this request in the MIPS backend.

        bfd/
        PR ld/21334
        * elf-bfd.h (elf_backend_data): Add `always_renumber_dynsyms'
        member.
        * elfxx-target.h [!elf_backend_always_renumber_dynsyms]
        (elf_backend_always_renumber_dynsyms): Define.
        (elfNN_bed): Initialize `always_renumber_dynsyms' member.
        * elfxx-mips.h (elf_backend_always_renumber_dynsyms): Define.
        * elflink.c (bfd_elf_size_dynsym_hash_dynstr): Also call
        `_bfd_elf_link_renumber_dynsyms' if the backend has requested
        it.
        (elf_gc_sweep): Likewise.

    (backported from commit 23ec1e32b1ab714649a7c25e49b5d721fe3bd3db)

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