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1406ece446
Add block method to preserve loop depth when evaluating statements in a block, so escape analysis can handle looping label more precisely. Updates #22438 Change-Id: I39b306544a6c0ee3fcbebbe0d0ee735cb71773e6 Reviewed-on: https://go-review.googlesource.com/c/go/+/193517 Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
45 lines
674 B
Go
45 lines
674 B
Go
// errorcheck -0 -m -l
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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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// Test escape analysis for goto statements.
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package escape
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var x bool
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func _() {
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var p *int
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loop:
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if x {
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goto loop
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}
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// BAD: We should be able to recognize that there
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// aren't any more "goto loop" after here.
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p = new(int) // ERROR "escapes to heap"
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_ = p
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}
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func _() {
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var p *int
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if x {
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loop:
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goto loop
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} else {
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p = new(int) // ERROR "does not escape"
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}
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_ = p
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}
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func _() {
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var p *int
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if x {
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loop:
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goto loop
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}
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p = new(int) // ERROR "does not escape"
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_ = p
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}
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