https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108836
--- Comment #4 from Peter Dimov ---
A compromise between no mutex at all, and a mutex that is silently a no-op,
could be a no-op mutex with [[deprecated]] members, although the atomic_flag is
probably better.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108836
--- Comment #3 from Jonathan Wakely ---
Whatever we do it won't help them, as they're using libstdc++ headers from gcc
6.3
It's possible to have a gcc build that has limited support for threading, but
not enough to support C++11 std::mutex,
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108836
--- Comment #2 from Peter Dimov ---
That's good to hear, but I don't think the issue is specific to mingw32. The
other report, https://github.com/boostorg/system/issues/92, was about "B
PLC", whatever this means. :-)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108836
--- Comment #1 from Andrew Pinski ---
mingw32 is no longer defaults to a single threaded and std::mutex is supported
there on the trunk for GCC 13
