github.com/zach-klippenstein/go@v0.0.0-20150108044943-fcfbeb3adf58/test/blank1.go (about)

     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  type T struct {
    17        _ []int
    18  }
    19  
    20  func main() {
    21  	_()	// ERROR "cannot use _ as value"
    22  	x := _+1	// ERROR "cannot use _ as value"
    23  	_ = x
    24  	_ = t._ // ERROR "cannot refer to blank field|invalid use of"
    25  
    26        var v1, v2 T
    27        _ = v1 == v2 // ERROR "cannot be compared|non-comparable"
    28  }