[Bug ld/22269] Undefined weak symbols isn't resolved to 0 in static PIE

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=22269

--- Comment #15 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot 
gnu.org> ---
The master branch has been updated by H.J. Lu <address@hidden>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=ddb7fd0f7b43e4c755c4b8c7752948e050363525

commit ddb7fd0f7b43e4c755c4b8c7752948e050363525
Author: H.J. Lu <address@hidden>
Date:   Sat Oct 14 10:23:48 2017 -0700

    aarch64: Check UNDEFWEAK_NO_DYNAMIC_RELOC

    Don't generate dynamic relocation against weak undefined symbol if it
    is resolved to zero.  FIXME: UNDEFWEAK_NO_DYNAMIC_RELOC may need to be
    checked in more places.

        PR ld/22269
        * elfnn-aarch64.c (elfNN_aarch64_final_link_relocate): Don't
        generate dynamic relocation if UNDEFWEAK_NO_DYNAMIC_RELOC is
        true.
        (elfNN_aarch64_allocate_dynrelocs): Discard dynamic relocations
        if UNDEFWEAK_NO_DYNAMIC_RELOC is true.

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