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https://github.com/golang/go
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3ff6ff7f84
When creating the temporary for map functions, if the key contains pointer, we need to create pointer-typed temporary. So if the temporary is live across a function call, the pointer is live. Change-Id: Id6e14ec9def8bc7987f0f8ce8423caf1e3754fcb Reviewed-on: https://go-review.googlesource.com/c/go/+/311379 Trust: Cherry Zhang <cherryyz@google.com> Reviewed-by: Than McIntosh <thanm@google.com>
35 lines
557 B
Go
35 lines
557 B
Go
// run
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// Copyright 2021 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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package main
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import "runtime"
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type T [10]int
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var m map[*T]int
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//go:noinline
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func F() {
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m = map[*T]int{
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K(): V(), // the key temp should be live across call to V
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}
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}
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//go:noinline
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func V() int { runtime.GC(); runtime.GC(); runtime.GC(); return 123 }
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//go:noinline
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func K() *T {
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p := new(T)
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runtime.SetFinalizer(p, func(*T) { println("FAIL") })
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return p
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}
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func main() {
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F()
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}
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