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Source file test/live2.go

Documentation: test

     1  // errorcheck -0 -live -wb=0
     2  
     3  // Copyright 2014 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  // liveness tests with inlining ENABLED
     8  // see also live.go.
     9  
    10  package main
    11  
    12  // issue 8142: lost 'addrtaken' bit on inlined variables.
    13  // no inlining in this test, so just checking that non-inlined works.
    14  
    15  func printnl()
    16  
    17  //go:noescape
    18  func useT40(*T40)
    19  
    20  type T40 struct {
    21  	m map[int]int
    22  }
    23  
    24  func newT40() *T40 {
    25  	ret := T40{}
    26  	ret.m = make(map[int]int, 42) // ERROR "live at call to makemap: &ret$"
    27  	return &ret
    28  }
    29  
    30  func bad40() {
    31  	t := newT40() // ERROR "live at call to makemap: .autotmp_[0-9]+ ret$"
    32  	printnl()     // ERROR "live at call to printnl: .autotmp_[0-9]+ ret$"
    33  	useT40(t)     // ERROR "live at call to useT40: .autotmp_[0-9]+ ret$"
    34  }
    35  
    36  func good40() {
    37  	ret := T40{}
    38  	ret.m = make(map[int]int, 42) // ERROR "live at call to makemap: .autotmp_[0-9]+ ret$"
    39  	t := &ret
    40  	printnl() // ERROR "live at call to printnl: .autotmp_[0-9]+ ret$"
    41  	useT40(t) // ERROR "live at call to useT40: .autotmp_[0-9]+ ret$"
    42  }
    43  

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