https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81251
Dominique d'Humieres <dominiq at lps dot ens.fr> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |WAITING Last reconfirmed| |2017-06-29 Ever confirmed|0 |1 --- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- If you compile the test with -Wall you get if(l) then Warning: 'l' is used uninitialized in this function [-Wuninitialized] On darwin the executable crashes with Program received signal SIGSEGV: Segmentation fault - invalid memory reference. IMO this PR should be closed as INVALID.