gcc/testsuite/go.test/test/convert.go

   1 // run
   2
   3 // Copyright 2009 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 types of constant expressions, using reflect.
   8
   9 package main
  10
  11 import "reflect"
  12
  13 func typeof(x interface{}) string { return reflect.TypeOf(x).String() }
  14
  15 func f() int { return 0 }
  16
  17 func g() int { return 0 }
  18
  19 type T func() int
  20
  21 var m = map[string]T{"f": f}
  22
  23 type A int
  24 type B int
  25
  26 var a A = 1
  27 var b B = 2
  28 var x int
  29
  30 func main() {
  31         want := typeof(g)
  32         if t := typeof(f); t != want {
  33                 println("type of f is", t, "want", want)
  34                 panic("fail")
  35         }
  36
  37         want = typeof(a)
  38         if t := typeof(+a); t != want {
  39                 println("type of +a is", t, "want", want)
  40                 panic("fail")
  41         }
  42         if t := typeof(a + 0); t != want {
  43                 println("type of a+0 is", t, "want", want)
  44                 panic("fail")
  45         }
  46 }