go bug442 源码
golang bug442 代码
文件路径：/test/fixedbugs/bug442.go
// run
// Copyright 2012 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.
// Used to crash generating hash and == functions for struct
// with leading _ field. Issue 3607.
package main
type T struct {
_ int
X interface{}
_ string
Y float64
}
func main() {
m := map[T]int{}
m[T{X: 1, Y: 2}] = 1
m[T{X: 2, Y: 3}] = 2
m[T{X: 1, Y: 2}] = 3 // overwrites first entry
if len(m) != 2 {
println("BUG")
}
}
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