[Bug gas/30828] notes obstack memory corruption

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=30828

--- Comment #1 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=9e99d10c9a7fc20adb0009d3761fe3cdfdbe0a8c

commit 9e99d10c9a7fc20adb0009d3761fe3cdfdbe0a8c
Author: Alan Modra <amodra@gmail.com>
Date:   Thu Sep 7 08:43:53 2023 +0930

    PR30828, notes obstack memory corruption

    Commit 3bab069c29b3 carelessly allowed "string" to be released from
    the notes obstack twice, with the second call to obstack_free
    releasing memory for a fixup that just happened to be the same size as
    the original string.  The fixup then of course was overwritten.
    This patch fixes that problem, and another that could occur on an
    error path.

            PR 30828
            * stabs.c (s_stab_generic): Don't free string twice.  Don't
            blow away entire notes obstack on a missing string.

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