[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 #17 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=95b03e4ad68e7a90f5096b47df595636344b783a

commit 95b03e4ad68e7a90f5096b47df595636344b783a
Author: H.J. Lu <address@hidden>
Date:   Sat Oct 14 10:27:33 2017 -0700

    arm: 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
        * elf32-arm.c (elf32_arm_final_link_relocate): Don't generate
        dynamic relocation if UNDEFWEAK_NO_DYNAMIC_RELOC is true.
        (allocate_dynrelocs_for_symbol): Discard dynamic relocations
        if UNDEFWEAK_NO_DYNAMIC_RELOC is true.

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