[Bug ld/26590] --as-needed doesn't work correctly

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=26590

--- Comment #3 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=93d49941edbb5274bee6ce3e547a07c7ce4c4301

commit 93d49941edbb5274bee6ce3e547a07c7ce4c4301
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Thu Sep 10 07:52:03 2020 -0700

    ld: Add more tests for --as-needed

    Prior to

    commit 1e3b96fd6cf0c7d018083994ad951ccf92aba582
    Author: Alan Modra <amodra@gmail.com>
    Date:   Fri Sep 4 13:54:21 2020 +0930

        Allow plugin syms to mark as-needed shared libs needed

    when removing unused IR symbol references, ld didn't add unnecessary
    DT_NEEDED libraries which may lead to undefined symbol reference in a
    --as-needed library when the symbol is defined in a prior --as-needed
    library and there is no reference in relocatable inputs.  This behavior
    is desirable since it ensures that both lazy and non-lazy bindings work
    the same way.  The problem is with --as-needed libraries, which happens
    with and without LTO.  Now, the linker may add many unnecessary DT_NEEDED
    libraries for IR inputs.

            PR ld/26590
            * testsuite/ld-elf/pr26590.err: New file.
            * testsuite/ld-elf/pr26590a.c: Likewise.
            * testsuite/ld-elf/pr26590b.c: Likewise.
            * testsuite/ld-elf/pr26590c.c: Likewise.
            * testsuite/ld-elf/pr26590d.c: Likewise.
            * testsuite/ld-elf/shared.exp: Run ld/26590 tests.

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