https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79876
--- Comment #6 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- > Does Darwin have so ridiculously low stack size limits by default, > or is that just some setting you've done? On darwin1(0|6) ulimit gives stack size (kbytes, -s) 65532 and the environment variable OMP_STACKSIZE is empty. Note that on darwin10 (revision r245900) the reduced test succeeds with OMP_STACKSIZE set to 80k and for smaller values I get an error libgomp: Stack size larger than system limit at run time.