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Source file test/label.go

Documentation: test

     1  // errorcheck
     2  
     3  // Copyright 2011 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  // Verify that erroneous labels are caught by the compiler.
     8  // This set is caught by pass 1.
     9  // Does not compile.
    10  
    11  package main
    12  
    13  var x int
    14  
    15  func f() {
    16  L1: // ERROR "label .*L1.* defined and not used"
    17  	for {
    18  	}
    19  L2: // ERROR "label .*L2.* defined and not used"
    20  	select {}
    21  L3: // ERROR "label .*L3.* defined and not used"
    22  	switch {
    23  	}
    24  L4: // ERROR "label .*L4.* defined and not used"
    25  	if true {
    26  	}
    27  L5: // ERROR "label .*L5.* defined and not used"
    28  	f()
    29  L6: // GCCGO_ERROR "previous"
    30  	f()
    31  L6: // ERROR "label .*L6.* already defined"
    32  	f()
    33  	if x == 20 {
    34  		goto L6
    35  	}
    36  
    37  L7:
    38  	for {
    39  		break L7
    40  	}
    41  
    42  L8:
    43  	for {
    44  		if x == 21 {
    45  			continue L8
    46  		}
    47  	}
    48  
    49  L9:
    50  	switch {
    51  	case true:
    52  		break L9
    53  	defalt: // ERROR "label .*defalt.* defined and not used"
    54  	}
    55  
    56  L10:
    57  	select {
    58  	default:
    59  		break L10
    60  	}
    61  
    62  	goto L10
    63  
    64  	goto go2 // ERROR "label go2 not defined"
    65  }
    66  

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