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Source file test/fixedbugs/issue19710.go

Documentation: test/fixedbugs

  // run
  
  // 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.
  
  // Issue 19710: mishandled defer delete(...)
  
  package main
  
  func main() {
  	if n := len(f()); n != 0 {
  		println("got", n, "want 0")
  		panic("bad defer delete")
  	}
  }
  
  func f() map[int]bool {
  	m := map[int]bool{}
  	for i := 0; i < 3; i++ {
  		m[i] = true
  		defer delete(m, i)
  	}
  	return m
  }
  

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