modernc.org/gc@v1.0.1-0.20240304020402-f0dba7c97c2b/testdata/errchk/test/undef.go (about)

     1  // errorcheck
     2  
     3  // Copyright 2010 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 line numbers in error messages.
     8  // Does not compile.
     9  
    10  package main
    11  
    12  var (
    13  	_ = x	// ERROR "undefined.*x"
    14  	_ = x	// ERROR "undefined.*x"
    15  	_ = x	// ERROR "undefined.*x"
    16  )
    17  
    18  type T struct {
    19  	y int
    20  }
    21  
    22  func foo() *T { return &T{y: 99} }
    23  func bar() int { return y }	// ERROR "undefined.*y"
    24  
    25  type T1 struct {
    26  	y1 int
    27  }
    28  
    29  func foo1() *T1 { return &T1{y1: 99} }
    30  var y1 = 2
    31  func bar1() int { return y1 }
    32  
    33  func f1(val interface{}) {
    34  	switch v := val.(type) {
    35  	default:
    36  		println(v)
    37  	}
    38  }
    39  
    40  func f2(val interface{}) {
    41  	switch val.(type) {
    42  	default:
    43  		println(v)	// ERROR "undefined.*v"
    44  	}
    45  }