https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104495
--- Comment #4 from Frank Heckenbach <f.heckenb...@fh-soft.de> --- Indeed, it has 2.31. 2.34 is only just in Debian experimental, and apparently not available as a backport. Since I need my code to run on various systems and I can't realistically compile a new glibc on them, this means I have to avoid std::once_flag until 2.34 is in widespread use, is that correct?
