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Source file test/fixedbugs/bug442.go

Documentation: test/fixedbugs

  // 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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