зеркало из https://github.com/CryptoPro/go.git
71 строка
1.0 KiB
Go
71 строка
1.0 KiB
Go
// errorcheck -0 -d=wb
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// Copyright 2019 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Make sure we don't introduce write barriers where we
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// don't need them. These cases are writing pointers to
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// globals to zeroed memory.
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package main
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func f1() []string {
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return []string{"a"}
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}
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func f2() []string {
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return []string{"a", "b"}
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}
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type T struct {
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a [6]*int
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}
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func f3() *T {
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t := new(T)
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t.a[0] = &g
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t.a[1] = &g
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t.a[2] = &g
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t.a[3] = &g
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t.a[4] = &g
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t.a[5] = &g
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return t
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}
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func f4() *T {
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t := new(T)
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t.a[5] = &g
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t.a[4] = &g
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t.a[3] = &g
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t.a[2] = &g
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t.a[1] = &g
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t.a[0] = &g
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return t
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}
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func f5() *T {
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t := new(T)
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t.a[4] = &g
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t.a[2] = &g
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t.a[0] = &g
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t.a[3] = &g
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t.a[1] = &g
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t.a[5] = &g
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return t
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}
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type U struct {
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a [65]*int
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}
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func f6() *U {
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u := new(U)
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u.a[63] = &g
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// This offset is too large: we only track the first 64 pointers for zeroness.
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u.a[64] = &g // ERROR "write barrier"
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return u
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}
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var g int
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