https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65233
--- Comment #23 from Richard Biener <rguenth at gcc dot gnu.org> --- Created attachment 34950 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34950&action=edit CFG debugging Just FYI - this is a local CFG debugging patch I use. Just do (gdb) p debug_dot_cfg (cfun) from anywhere you like and get 'dot -Tx11' of the CFG spawned in the background (you can continue debugging).