https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109967
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|Wrong code at -O2 on |[10/11/12/13/14 Regression] |x86_64-linux-gnu |Wrong code at -O2 on | |x86_64-linux-gnu Target Milestone|--- |10.5 Known to work| |6.1.0 Known to fail| |7.1.0 --- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- The problem is the Partition code in expand. Without the ={0,0}, we get: Partition 1: size 20 align 16 g f With we get: Partition 1: size 20 align 16 g Partition 0: size 16 align 16 f