[Bug c/105950] > O2 optimization causes runtime (SIGILL) during main initialization

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105950

--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
Note that GCC 9 is no longer supported.  Note one common error resulting in
SIGILL is when you fall through to an unreachable place which could be padding
(like when there's a missing return in a function).