github.com/xushiwei/go@v0.0.0-20130601165731-2b9d83f45bc9/test/fixedbugs/issue4618.go (about)

     1  // run
     2  
     3  // Copyright 2013 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  package main
     8  
     9  import (
    10  	"fmt"
    11  	"os"
    12  	"testing"
    13  )
    14  
    15  type T struct { int }
    16  
    17  var globl *T
    18  
    19  func F() {
    20  	t := &T{}
    21  	globl = t
    22  }
    23  
    24  func G() {
    25  	t := &T{}
    26  	_ = t
    27  }
    28  
    29  func main() {
    30  	nf := testing.AllocsPerRun(100, F)
    31  	ng := testing.AllocsPerRun(100, G)
    32  	if int(nf) != 1 {
    33  		fmt.Printf("AllocsPerRun(100, F) = %v, want 1\n", nf)
    34  		os.Exit(1)
    35  	}
    36  	if int(ng) != 0 {
    37  		fmt.Printf("AllocsPerRun(100, G) = %v, want 0\n", ng)
    38  		os.Exit(1)
    39  	}
    40  }