https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109339
--- Comment #14 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-12 branch has been updated by Jonathan Wakely <r...@gcc.gnu.org>: https://gcc.gnu.org/g:47880309516fd5c913102eb4c52dc86da7051983 commit r12-9486-g47880309516fd5c913102eb4c52dc86da7051983 Author: Jonathan Wakely <jwak...@redhat.com> Date: Fri Mar 31 13:38:14 2023 +0100 libstdc++: Avoid -Wmaybe-uninitialized warning in std::stop_source [PR109339] We pass a const-reference to *this before it's constructed, and GCC assumes that all const-references are accessed. Add the access attribute to say it's not accessed. libstdc++-v3/ChangeLog: PR libstdc++/109339 * include/std/stop_token (_Stop_state_ptr(const stop_source&)): Add attribute access with access-mode 'none'. * testsuite/30_threads/stop_token/stop_source/109339.cc: New test. (cherry picked from commit a35e8042fbc7a3eb9cece1fba4cdd3b6cdfb906f)
