https://gcc.gnu.org/bugzilla/show_bug.cgi?id=24639 Bug 24639 depends on bug 127005, which changed state.
Bug 127005 Summary: Wmaybe-uninitialized with optional<lock_guard<mutex>> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127005 What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED
