gcc/testsuite/go.test/test/escape3.go

   1 // run
   2
   3 // Copyright 2011 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 // Test the run-time behavior of escape analysis-related optimizations.
   8
   9 package main
  10
  11 func main() {
  12         test1()
  13 }
  14
  15 func test1() {
  16         check1(0)
  17         check1(1)
  18         check1(2)
  19 }
  20
  21 type T1 struct {
  22         X, Y, Z int
  23 }
  24
  25 func f() int {
  26         return 1
  27 }
  28
  29 func check1(pass int) T1 {
  30         v := []T1{{X: f(), Z: f()}}
  31         if v[0].Y != 0 {
  32                 panic("nonzero init")
  33         }
  34         v[0].Y = pass
  35         return v[0]
  36 }