https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69577
--- Comment #2 from Zdenek Sojka <zsojka at seznam dot cz> --- Created attachment 37538 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37538&action=edit another testcase Output: $ gcc -O -fno-forward-propagate -mavx testcase.c $ sde64 -- ./a.out 00000000000000000000000000000002 Aborted