https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81489
--- Comment #1 from Tom de Vries <vries at gcc dot gnu.org> --- Created attachment 41795 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41795&action=edit trigger and assert patch This patch uses the bit that makes the bug easier to trigger, and adds an assert demonstrating that we're not picking up the correct location. Using this patch, we hit the assert: ... FAIL: gcc.dg/tree-ssa/isolate-1.c (internal compiler error) FAIL: gcc.dg/tree-ssa/isolate-5.c (internal compiler error) ...