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Source file test/blank1.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.
  
  // Test that incorrect uses of the blank identifer are caught.
  // Does not compile.
  
  package _	// ERROR "invalid package name _"
  
  var t struct {
  	_ int
  }
  
  func (x int) _() { // ERROR "cannot define new methods on non-local type"
  	println(x)
  }
  
  type T struct {
        _ []int
  }
  
  func main() {
  	_()	// ERROR "cannot use _ as value"
  	x := _+1	// ERROR "cannot use _ as value"
  	_ = x
  	_ = t._ // ERROR "cannot refer to blank field|invalid use of"
  
        var v1, v2 T
        _ = v1 == v2 // ERROR "cannot be compared|non-comparable"
  }
  

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