https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100152
--- Comment #52 from Iain Sandoe <iains at gcc dot gnu.org> --- (In reply to lucier from comment #51) > /Users/lucier/programs/gcc/gcc-mainline/libstdc++-v3/testsuite/29_atomics/ > atomic_integral/wait_notify.cc -std=gnu++2a -pthread > -fdiagnostics-plain-output ./libtestc++.a -liconv > -L/Users/lucier/programs/gcc/objdirs/gcc-test/x86_64-apple-darwin19.6.0/ > libstdc++-v3/src/filesystem/.libs -lm -o ./wait_notify.exe^M > PASS: 29_atomics/atomic_integral/wait_notify.cc (test for excess errors) > Setting LD_LIBRARY_PATH to I do see this test timeout (randomly) on un-patched Darwin19 (at least on corei7), however I will re-try and compare binaries with / without the 100152 proposed patch.