https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87457
--- Comment #2 from SebastiansPublicAddress at googlemail dot com --- (In reply to Jonathan Wakely from comment #1) > I think the problem is that the std::thread code in libstdc++.so isn't built > with ThreadSanitizer. Wasn't easy to build libstdc++ with different flags (*), but now I think I did it, and I still get the errors. So I think this was not the cause. I'm quite sure that now I'm using a libstdc++ that's built with -fsanitize=thread because: - I added a printf to thread::join() and I see it when I reproduce the failure. - I see -fsanitize=thread in the output of "make" when I build libstdc++. (*) here's how I built libstdc++: - Build the whole gcc-8 debian source package $ sudo apt-get build-dep gcc-8 $ sudo apt-get source gcc-8 gcc-8-8.2.0$ debuild -b -uc -us - backup and remove gcc-8-8.2.0/build/x86_64-linux-gnu/libstdc++-v3 - configure with the same commandline as in the backup gcc-8-8.2.0/build/x86_64-linux-gnu/libstdc++-v3/config.log (fix quoting of --program-transform-name=s&$&-8&;s&^&x86_64-linux-gnu-&) but with prefix /usr/local/tsan - set a few environment variables as suggested by the error messages repeat until build is sucessful - add --enable-cxx-flags=-fsanitize=thread - make, make install - export LD_LIBRARY_PATH=/usr/local/tsan/lib - build my test program with -L/usr/local/tsan/lib -I/usr/local/tsan/include - export LD_LIBRARY_PATH=/usr/local/tsan/lib
