(gdb) run The program being debugged has been started already. Start it from the beginning? (y or n) y Starting program: /home/daniel/Dev/rbx-llvm/bin/rbx [Thread debugging using libthread_db enabled] [New Thread 0x7f3468a41700 (LWP 28200)] [Switching to Thread 0x7f3468a41700 (LWP 28200)] Breakpoint 2, VMMethod (this=0x1e1e810, state=0x1de9580, meth=0x7f346720a518) at vm/vmmethod.cpp:131 131 call_count = 0; (gdb) p state->shared.config.jit_enabled $18 = { = {_vptr.ConfigItem = 0x1218ab0, name_ = 0xd73e04 "jit.enabled", description_ = 0xd73f38 "Whether or not to use the dynamic JIT", set_ = false}, value = false} (gdb) p (bool)state->shared.config.jit_enabled $19 = 176 (gdb)