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Source file test/blank1.go

Documentation: test

     1  // errorcheck
     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 incorrect uses of the blank identifer are caught.
     8  // Does not compile.
     9  
    10  package _	// ERROR "invalid package name _"
    11  
    12  var t struct {
    13  	_ int
    14  }
    15  
    16  func (x int) _() { // ERROR "cannot define new methods on non-local type"
    17  	println(x)
    18  }
    19  
    20  type T struct {
    21        _ []int
    22  }
    23  
    24  func main() {
    25  	_()	// ERROR "cannot use _ as value"
    26  	x := _+1	// ERROR "cannot use _ as value"
    27  	_ = x
    28  	_ = t._ // ERROR "cannot refer to blank field|invalid use of"
    29  
    30        var v1, v2 T
    31        _ = v1 == v2 // ERROR "cannot be compared|non-comparable"
    32  }
    33  

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