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00e14afa0d
Updates #35518. Change-Id: Icd052c8c68aae32696b5831a29e04cc4cb224b06 Reviewed-on: https://go-review.googlesource.com/c/go/+/206820 Run-TryBot: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
44 lines
847 B
Go
44 lines
847 B
Go
// errorcheck -0 -l -m=2
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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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// This test makes sure that -m=2's escape analysis diagnostics don't
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// go into an infinite loop when handling negative dereference
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// cycles. The critical thing being tested here is that compilation
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// succeeds ("errorcheck -0"), not any particular diagnostic output,
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// hence the very lax ERROR patterns below.
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package p
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type Node struct {
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Orig *Node
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}
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var sink *Node
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func f1() {
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var n Node // ERROR "."
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n.Orig = &n
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m := n // ERROR "."
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sink = &m
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}
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func f2() {
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var n1, n2 Node // ERROR "."
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n1.Orig = &n2
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n2 = n1
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m := n2 // ERROR "."
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sink = &m
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}
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func f3() {
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var n1, n2 Node // ERROR "."
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n1.Orig = &n1
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n1.Orig = &n2
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sink = n1.Orig.Orig
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}
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