https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42159
--- Comment #29 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- > I'd like to reopen this issue as we are still seeing this with as new gcc > as 4.8.4 (we've been unable to build anything newer). Unfortunately I do > not seem to have the access rights to reopen the bug. Help? I can reopen the PR, but I don't see the point: (1) I can reproduce the problem only on x86_64-apple-darwin10 with gcc version 4.4.7 (I get 'CAUGHT' for all the other revisions I have tested on powerpc-apple-darwin9, x86_64-apple-darwin10, and x86_64-apple-darwin14. (2) You should be able to build 4.9 and 5.0 without any patch for x86_64-apple-darwin* and a few for powerpc-apple-darwin9 and 5.0. (3) Why are you not using a more recent version of OS X?