[Bug libstdc++/95989] Segmentation fault compiling with static libraries and using jthread::request_stop

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95989

--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> ---
pthread_self seems to be defined in libc.a not libpthread.a so using
--whole-archive around -lpthread doesn't help.