https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92071
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jakub at gcc dot gnu.org --- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Cleaned up reduced testcase, still ICEs with current trunk at -O2: void *a; union U { double c; char d[8]; }; void bar (union U); void foo (void) { union U b; __builtin_memcpy (b.d, a, 8); bar (b); }