gcc/testsuite/go.test/test/named1.go

   1 // errchk $G -e $D/$F.go
   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 that basic operations on named types are valid
   8 // and preserve the type.
   9
  10 package main
  11
  12 type Bool bool
  13
  14 type Map map[int]int
  15
  16 func (Map) M() {}
  17
  18 type Slice []byte
  19
  20 var slice Slice
  21
  22 func asBool(Bool)     {}
  23 func asString(String) {}
  24
  25 type String string
  26
  27 func main() {
  28         var (
  29                 b    Bool = true
  30                 i, j int
  31                 c    = make(chan int)
  32                 m    = make(Map)
  33         )
  34
  35         asBool(b)
  36         asBool(!b)
  37         asBool(true)
  38         asBool(*&b)
  39         asBool(Bool(true))
  40         asBool(1 != 2) // ERROR "cannot use.*type bool.*as type Bool"
  41         asBool(i < j)  // ERROR "cannot use.*type bool.*as type Bool"
  42
  43         _, b = m[2] // ERROR "cannot .* bool.*type Bool"
  44         m[2] = 1, b // ERROR "cannot use.*type Bool.*as type bool"
  45
  46         b = c <- 1 // ERROR "cannot use.*type bool.*type Bool"
  47         _ = b
  48         asBool(c <- 1) // ERROR "cannot use.*type bool.*as type Bool"
  49
  50         _, b = <-c // ERROR "cannot .* bool.*type Bool"
  51         _ = b
  52
  53         var inter interface{}
  54         _, b = inter.(Map) // ERROR "cannot .* bool.*type Bool"
  55         _ = b
  56
  57         var minter interface {
  58                 M()
  59         }
  60         _, b = minter.(Map) // ERROR "cannot .* bool.*type Bool"
  61         _ = b
  62
  63         asBool(closed(c)) // ERROR "cannot use.*type bool.*as type Bool"
  64         b = closed(c)     // ERROR "cannot use.*type bool.*type Bool"
  65         _ = b
  66
  67         asString(String(slice)) // ERROR "cannot .*type Slice.*type String"
  68 }