[Bug libstdc++/97944] 30_threads/jthread/95989.cc fails randomly

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97944

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I can't reproduce this on aarch64-unknown-linux-gnu (Fedora 32) or
powerpc64le-unknown-linux-gnu (Centos 7.8.2003). I've never seen it fail :-(

Please provide the glibc and distro details for the systems where this fails
for you.