https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64354
--- Comment #1 from Dmitry Vyukov <dvyukov at google dot com> --- We've hit this issue while implementing Go support for C++ ThreadSanitizer: https://github.com/golang/go/issues/14602 __has_feature obviously does not work. Providing __SANITIZE_THREAD__ looks very reasonable since we provide __SANITIZE_ADDRESS__.
