$ gdb perl GNU gdb (Raspbian 7.12-6) 7.12.0.20161007-git (gdb) r int.pl [New Thread 0x76af7470 (LWP 26138)] running cref handler Thread 1 "perl" received signal SIGSEGV, Segmentation fault. 0x000c09ec in Perl_pp_and () (gdb) bt #0 0x000c09ec in Perl_pp_and () #1 0x000c0434 in Perl_runops_standard () #2 0x000500a4 in perl_run () #3 0x0002ab50 in main ()