[Bug libstdc++/110974] format out of bounds read on invalid format string "{:{}."

[cvs-commit at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110974

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-13 branch has been updated by Jonathan Wakely
<r...@gcc.gnu.org>:

https://gcc.gnu.org/g:6ac826917de970ebc789a5a1928d6d6987d85c0b

commit r13-7707-g6ac826917de970ebc789a5a1928d6d6987d85c0b
Author: Jonathan Wakely <jwak...@redhat.com>
Date:   Thu Aug 10 23:15:29 2023 +0100

    libstdc++: Fix out-of-bounds read in format string "{:{}." [PR110974]

    libstdc++-v3/ChangeLog:

            PR libstdc++/110974
            * include/std/format (_Spec::_M_parse_precision): Check for
            empty range before dereferencing iterator.
            * testsuite/std/format/string.cc: Check for expected exception.
            Fix expected exception message in test_pr110862() and actually
            call it.

    (cherry picked from commit ecfd8c7ffecf9e8f851c996ec149fbda7ef202f5)