https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84141
--- Comment #24 from Jürgen Reuter <juergen.reuter at desy dot de> --- Created attachment 43322 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43322&action=edit Additional failing test case (after the prelim. fix) This is still lengthy, and I can reduce it further but maybe the error helps you when you run it in the debugger. I get Running test: resonance_insertion_2seg_prod(64951,0x7fff9ae91340) malloc: *** mach_vm_map(size=9223372036854779904) failed (error code=3) *** error: can't allocate region *** set a breakpoint in malloc_error_break to debug Program received signal SIGSEGV: Segmentation fault - invalid memory reference. Backtrace for this error: #0 0x10900d64c #1 0x10900c9f3 #2 0x7fff620bcf59