[Bug libstdc++/99942] [12/13/14/15 Regression] COW std::string::data() is noexcept but can throw

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99942

--- Comment #7 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jonathan Wakely <r...@gcc.gnu.org>:

https://gcc.gnu.org/g:6586b015f1211ccd6e3e89b44dcb2116347edf89

commit r15-2650-g6586b015f1211ccd6e3e89b44dcb2116347edf89
Author: Jonathan Wakely <jwak...@redhat.com>
Date:   Wed Mar 27 11:07:17 2024 +0000

    libstdc++: Remove noexcept from non-const std::basic_string::data()
[PR99942]

    The C++17 non-const overload of data() allows modifying the string
    contents directly, so for the COW string we must do a copy-on-write to
    unshare it. That means allocating, which can throw, so it shouldn't be
    noexcept.

    libstdc++-v3/ChangeLog:

            PR libstdc++/99942
            * include/bits/cow_string.h (data()): Change to noexcept(false).