var runtime.traceback_cache

4 uses

	runtime (current package)
		runtime1.go#L25: var traceback_cache uint32 = 2 << tracebackShift
		runtime1.go#L39: 	t := atomic.Load(&traceback_cache)
		runtime1.go#L402: 	traceback_env = traceback_cache
		runtime1.go#L433: 	atomic.Store(&traceback_cache, t)