[Bug libstdc++/105995] QoI: constexpr basic_string variable must use all of its SSO buffer

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105995

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

https://gcc.gnu.org/g:98a0d72a610a87e8e383d366e50253ddcc9a51dd

commit r13-1139-g98a0d72a610a87e8e383d366e50253ddcc9a51dd
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Thu Jun 16 14:57:32 2022 +0100

    libstdc++: Support constexpr global std::string for size < 15 [PR105995]

    I don't think this is required by the standard, but it's easy to
    support.

    libstdc++-v3/ChangeLog:

            PR libstdc++/105995
            * include/bits/basic_string.h (_M_use_local_data): Initialize
            the entire SSO buffer.
            * testsuite/21_strings/basic_string/cons/char/105995.cc: New test.