mirror of
https://github.com/golang/go
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b7b4c60585
Prevent conversions between Pointer types,
like we do for sync/atomic.Pointer.
Fixes #71583
Change-Id: I20e83106d8a27996f221e6cd9d52637b0442cea4
Reviewed-on: https://go-review.googlesource.com/c/go/+/647195
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
(cherry picked from commit 8163ea1458)
Reviewed-on: https://go-review.googlesource.com/c/go/+/647435
Reviewed-by: Carlos Amedee <carlos@golang.org>
TryBot-Bypass: Cherry Mui <cherryyz@google.com>
25 lines
584 B
Go
25 lines
584 B
Go
// errorcheck
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// Copyright 2025 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 weak pointers.
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package p
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import (
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"runtime"
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"weak"
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)
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// Adapted from example in https://github.com/golang/go/issues/67552#issuecomment-2639661220
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func conversion() {
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p := "hello"
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a := weak.Make(&p)
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b := (weak.Pointer[*byte])(a) // ERROR "cannot convert a \(variable of struct type weak\.Pointer\[string\]\) to type weak.Pointer\[\*byte\]"
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c := b.Value()
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println(**c)
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runtime.KeepAlive(p)
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}
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