Plan 9 from Bell Labs’s /usr/web/sources/contrib/stallion/root/arm/go/test/fixedbugs/issue20813.go
// errorcheck // Copyright 2017 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 p func f() { 1 = 2 // ERROR "cannot assign to 1" }