https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63880
--- Comment #1 from Kai Petzke <petzke at teltarif dot de> --- Created attachment 33980 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33980&action=edit A file with small modifications from overoptimized.c, that compiles correctly.