[Bug libstdc++/70503] [4.9/5 Regression] extern "C" functions in src/c++11/thread.cc are global in libstdc++.a

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70503

--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
That should be fixed at r234757