RUBY_INTERNAL_EVENT_GC_START   32 ext/-test-/tracepoint/gc_hook.c 	fprintf(stderr, "trace: %s\n", rb_tracearg_event_flag(tparg) == RUBY_INTERNAL_EVENT_GC_START ? "gc_start" : "gc_end");
RUBY_INTERNAL_EVENT_GC_START   72 ext/-test-/tracepoint/gc_hook.c     return set_gc_hook(module, proc, RUBY_INTERNAL_EVENT_GC_START,
RUBY_INTERNAL_EVENT_GC_START   36 ext/-test-/tracepoint/tracepoint.c       case RUBY_INTERNAL_EVENT_GC_START:
RUBY_INTERNAL_EVENT_GC_START   61 ext/-test-/tracepoint/tracepoint.c 				    RUBY_INTERNAL_EVENT_GC_START | RUBY_INTERNAL_EVENT_GC_END_MARK |
RUBY_INTERNAL_EVENT_GC_START 6344 gc.c               gc_event_hook(objspace, RUBY_INTERNAL_EVENT_GC_START, 0 /* TODO: pass minor/immediate flag? */);