runtime._func.args (field)

5 uses

	runtime (current package)
		runtime2.go#L829: 	args        int32  // in/out args size
		traceback.go#L575: 	return uintptr(f.args), nil, !(needArgMap && f.args == _ArgsSizeUnknown)
		traceback.go#L587: 	arglen = uintptr(f.args)
		traceback.go#L588: 	if needArgMap && f.args == _ArgsSizeUnknown {