[Bug ld/29086] -Wl,--wrap=foo with LTO leads to undefined symbol

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=29086

--- Comment #4 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 <hjl@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=da422fa49d508e33b8f1b2bd9b8f719b831b199b

commit da422fa49d508e33b8f1b2bd9b8f719b831b199b
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Mon Apr 25 10:51:39 2022 -0700

    LTO: Handle __real_SYM reference in IR

    When an IR symbol SYM is referenced in IR via __real_SYM, its resolution
    should be LDPR_PREVAILING_DEF, not PREVAILING_DEF_IRONLY, since LTO
    doesn't know that __real_SYM should be resolved by SYM.

    bfd/

            PR ld/29086
            * linker.c (bfd_wrapped_link_hash_lookup): Mark SYM is referenced
            via __real_SYM.

    include/

            PR ld/29086
            * bfdlink.h (bfd_link_hash_entry): Add ref_real.

    ld/

            PR ld/29086
            * plugin.c (get_symbols): Resolve SYM definition to
            LDPR_PREVAILING_DEF for __real_SYM reference.
            * testsuite/ld-plugin/lto.exp: Run PR ld/29086 test.
            * testsuite/ld-plugin/pr29086.c: New file.

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