[Bug ld/26314] Linking LTO objects with conflicting symbol definitions from static and shared libraries fails

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=26314

--- Comment #8 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot 
gnu.org> ---
The master branch has been updated by Alan Modra <amodra@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=b1a92c635c1ec10fd703302ce1fc4ab3a8515a04

commit b1a92c635c1ec10fd703302ce1fc4ab3a8515a04
Author: Alan Modra <amodra@gmail.com>
Date:   Fri Oct 30 14:56:35 2020 +1030

    PR26806, Suspected linker bug with LTO

    This patch reverts most of git commit 1e3b96fd6cf, so IR symbols are
    again not marked def_regular or ref_regular.  That should be enough to
    stop IR symbols from becoming dynamic.  To mark as-needed shared
    libraries referenced by IR symbols, use the referencing BFD rather
    than the ref flags.

    bfd/
            PR 15146
            PR 26314
            PR 26530
            PR 26806
            * elflink.c (elf_link_add_object_symbols): Don't set def/ref flags
            for plugin syms.  Do allow plugin syms to mark as-needed libs.
    ld/
            PR 26806
            * testsuite/ld-plugin/lto-19.h,
            * testsuite/ld-plugin/lto-19a.c,
            * testsuite/ld-plugin/lto-19b.c,
            * testsuite/ld-plugin/lto-19c.c: New test.
            * testsuite/ld-plugin/pr26806.c,
            * testsuite/ld-plugin/pr26806.d: New test.
            * testsuite/ld-plugin/lto.exp: Run them.

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