const runtime._StackLimit

3 uses

	runtime (current package)
		preempt.go#L324: 	if asyncPreemptStack > _StackLimit {
		stack.go#L103: 	_StackLimit = _StackGuard - _StackSystem - _StackSmall
		stack.go#L1172: 	if used := gp.stack.hi - gp.sched.sp + _StackLimit; used >= avail/4 {