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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/29257] Double free of demangled symbol name
Date: Thu, 13 Apr 2023 20:00:21 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D29257

--- Comment #14 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot g=
nu.org> ---
The master branch has been updated by Tom Tromey <tromey@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=3Dbinutils-gdb.git;h=3Df96328accde1=
e6302b62aa880675594618079cb3

commit f96328accde1e6302b62aa880675594618079cb3
Author: Tom Tromey <tromey@adacore.com>
Date:   Tue Dec 6 12:07:12 2022 -0700

    Avoid double-free with debuginfod

    PR gdb/29257 points out a possible double free when debuginfod is in
    use.  Aside from some ugly warts in the symbol code (an ongoing
    issue), the underlying issue in this particular case is that elfread.c
    seems to assume that symfile_bfd_open will return NULL on error,
    whereas in reality it throws an exception.  As this code isn't
    prepared for an exception, bad things result.

    This patch fixes the problem by introducing a non-throwing variant of
    symfile_bfd_open and using it in the affected places.

    Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=3D29257

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