// errorcheck // Copyright 2014 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. // Internal compiler crash used to stop errors during second copy. package main func main() { _ = copy(nil, []int{}) // ERROR "use of untyped nil" _ = copy([]int{}, nil) // ERROR "use of untyped nil" _ = 1 + true // ERROR "mismatched types untyped int and untyped bool" }