[Bug c++/87457] thread sanitizer false positive on virtual destructor

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87457

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I think the problem is that the std::thread code in libstdc++.so isn't built
with ThreadSanitizer.