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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug bootstrap/89494] Bootstrap error when using GCC 4.2.1
Date: Wed, 16 Sep 2020 19:20:22 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D89494

--- Comment #26 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-9 branch has been updated by Jakub Jelinek
<jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:489c62beef150f870d1755d3772bd2d0ce7344b4

commit r9-8878-g489c62beef150f870d1755d3772bd2d0ce7344b4
Author: Gustavo Romero <gromero@linux.ibm.com>
Date:   Wed Apr 15 15:14:45 2020 +0200

    selftest: Work around GCC 4.2 PR33916 bug by optimizing the ctor [PR894=
94]

    GCC 4.2 due to PR33916 miscompiles temp_dump_context ctor, because it
doesn't
    zero initialize the whole dump_context temporary on which it runs the
static
    get method and during destruction of the temporary an uninitialized poi=
nter
    is deleted.

    More recent GCC versions properly zero initialize it and ideally optimi=
ze
away
    the construction/destruction of the temporary, as it isn't used for
anything,
    but there is no reason to create the temporary, static member functions=
 can
    be called without an associated object.

    2020-04-15  Gustavo Romero  <gromero@linux.ibm.com>

            PR bootstrap/89494
            * dumpfile.c (selftest::temp_dump_context::temp_dump_context):
            Don't construct a dump_context temporary to call static method.

    (cherry picked from commit c00568f376078129196740d83946d54dc5437401)=