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Source file test/initializerr.go

Documentation: test

  // errorcheck
  
  // Copyright 2009 The Go Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style
  // license that can be found in the LICENSE file.
  
  // Verify that erroneous initialization expressions are caught by the compiler
  // Does not compile.
  
  package main
  
  type S struct {
  	A, B, C, X, Y, Z int
  }
  
  type T struct {
  	S
  }
  
  var x = 1
  var a1 = S { 0, X: 1 }	// ERROR "mixture|undefined"
  var a2 = S { Y: 3, Z: 2, Y: 3 } // ERROR "duplicate"
  var a3 = T { S{}, 2, 3, 4, 5, 6 }	// ERROR "convert|too many"
  var a4 = [5]byte{ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 }	// ERROR "index|too many"
  var a5 = []byte { x: 2 }	// ERROR "index"
  var a6 = []byte{1: 1, 2: 2, 1: 3}	// ERROR "duplicate index"
  
  var ok1 = S { }	// should be ok
  var ok2 = T { S: ok1 }	// should be ok
  
  // These keys can be computed at compile time but they are
  // not constants as defined by the spec, so they do not trigger
  // compile-time errors about duplicate key values.
  // See issue 4555.
  
  type Key struct {X, Y int}
  
  var _ = map[Key]string{
  	Key{1,2}: "hello",
  	Key{1,2}: "world",
  }
  

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