http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59039
--- Comment #19 from H.J. Lu <hjl.tools at gmail dot com> --- (In reply to Eric Botcazou from comment #18) > > I couldn't find anything in GCC manual. > > There are a few documented hooks, but this looks quite light indeed, so the > sources are probably the best references, i.e. builtins.c and except.c: > Would it be OK to submit it a patch to document __builtin_longjmp/__builtin_setjmp based on their sources?