1 // run 2 3 // Copyright 2012 The Go Authors. All rights reserved. 4 // Use of this source code is governed by a BSD-style 5 // license that can be found in the LICENSE file. 6 7 // Used to crash generating hash and == functions for struct 8 // with leading _ field. Issue 3607. 9 10 package main 11 12 type T struct { 13 _ int 14 X interface{} 15 _ string 16 Y float64 17 } 18 19 func main() { 20 m := map[T]int{} 21 m[T{X: 1, Y: 2}] = 1 22 m[T{X: 2, Y: 3}] = 2 23 m[T{X: 1, Y: 2}] = 3 // overwrites first entry 24 if len(m) != 2 { 25 println("BUG") 26 } 27 } 28
