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f346a4c44c
This commit just adds a regress test for a few of the important corner cases that I identified in #27557, which turn out to not be tested anywhere. While here, annotate a few of the existing test cases where we could improve escape analysis. Updates #27557. Change-Id: Ie57792a538f7899bb17915485fabc86100f469a3 Reviewed-on: https://go-review.googlesource.com/c/go/+/197137 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com>
40 lines
829 B
Go
40 lines
829 B
Go
// errorcheck -0 -l -m
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// Copyright 2017 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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// Issue 21709: range expression overly escapes.
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package p
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type S struct{}
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func (s *S) Inc() {} // ERROR "s does not escape"
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var N int
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func F1() {
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// BAD: s should not escape
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var s S // ERROR "moved to heap: s"
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for i := 0; i < N; i++ {
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fs := []func(){ // ERROR "\[\]func\(\) literal does not escape"
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s.Inc, // ERROR "s.Inc does not escape"
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}
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for _, f := range fs {
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f()
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}
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}
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}
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func F2() {
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// BAD: s should not escape
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var s S // ERROR "moved to heap: s"
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for i := 0; i < N; i++ {
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for _, f := range []func(){ // ERROR "\[\]func\(\) literal does not escape"
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s.Inc, // ERROR "s.Inc does not escape"
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} {
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f()
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}
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}
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}
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