// Copyright 2026 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package errorsas import "errors" type MyError struct{} func (MyError) Error() string { return "" } func _(err error) { var target MyError errors.As(err, target) // ERROR "second argument to errors.As must be a non-nil pointer" }