[Bug libstdc++/103549] Uninitialized member warning from regex header

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103549

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-10 branch has been updated by Jonathan Wakely
<r...@gcc.gnu.org>:

https://gcc.gnu.org/g:17af7c1a054c9663e5b353a4fc576522e0cd9a4f

commit r10-10379-g17af7c1a054c9663e5b353a4fc576522e0cd9a4f
Author: Jonathan Wakely <jwak...@redhat.com>
Date:   Sat Dec 4 11:38:25 2021 +0000

    libstdc++: Initialize member in std::match_results [PR103549]

    This fixes a -Wuninitialized warning for std::cmatch m1, m2; m1=m2;

    Also name the template parameters in the forward declaration, to get rid
    of the <template-parameter-1-1> noise in diagnostics.

    libstdc++-v3/ChangeLog:

            PR libstdc++/103549
            * include/bits/regex.h (match_results): Give names to template
            parameters in first declaration.
            (match_results::_M_begin): Add default member-initializer.

    (cherry picked from commit 87710ec7b213245ecb194b778e97ae3a6790394f)