gcc/testsuite/go.test/test/func8.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 evaluation order.
   8
   9 package main
  10
  11 var calledf int
  12
  13 func f() int {
  14         calledf++
  15         return 0
  16 }
  17
  18 func g() int {
  19         return calledf
  20 }
  21
  22 var xy string
  23
  24 //go:noinline
  25 func x() bool {
  26         xy += "x"
  27         return false
  28 }
  29
  30 //go:noinline
  31 func y() string {
  32         xy += "y"
  33         return "abc"
  34 }
  35
  36 func main() {
  37         if f() == g() {
  38                 panic("wrong f,g order")
  39         }
  40
  41         if x() == (y() == "abc") {
  42                 panic("wrong compare")
  43         }
  44         if xy != "xy" {
  45                 panic("wrong x,y order")
  46         }
  47 }