[Bug c++/59083] -fisolate-erroneous-paths produces illegal instruction with enabled -fprofile-generate

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59083

--- Comment #15 from Richard Biener <rguenth at gcc dot gnu.org> ---
Note that technically invalid C programs still may be "reasonable".  For
example
writing *0 = 1; and catching that via sigsetjmp/siglongjmp and a signal handler
is possible but of course invokes undefined behavior according to the C
standard.

But yes, if now random "POSIX" programs start failing then that's bad.  Does
-fnon-call-exceptions exeption handling on SJLJ targets still work?  (I suppose
we lower to SJLJ only after RTL expansion or we at least still have EH edges
around).