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reflect: deprecate SliceHeader and StringHeader

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As discussed in CL 401434 there are substantial misuses of these in the
wild, and they are a potential source of unsafety even for code that
does not use them directly.

Since proposal #53003 has already been implemented, now is the right
time to deprecate reflect.{SliceHeader, StringHeader}.

For #53003.

Change-Id: I724cf46d4b22d2ed3cbf2b948e6aac5ee4bf0f6e
Reviewed-on: https://go-review.googlesource.com/c/go/+/428757
Run-TryBot: hopehook <hopehook@golangcn.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Matthew Dempsky <mdempsky@google.com>
This commit is contained in:
hopehook 2022-09-09 08:43:10 +08:00 committed by Gopher Robot
parent 76c94eb706
commit d734203e39
1 changed files with 4 additions and 0 deletions
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4
src/reflect/value.go
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@ -2742,6 +2742,8 @@ func (v Value) UnsafePointer() unsafe.Pointer {
// Moreover, the Data field is not sufficient to guarantee the data
// it references will not be garbage collected, so programs must keep
// a separate, correctly typed pointer to the underlying data.
//
// Deprecated: Use unsafe.String or unsafe.StringData instead.
type StringHeader struct {
Data uintptr
Len int
@ -2753,6 +2755,8 @@ type StringHeader struct {
// Moreover, the Data field is not sufficient to guarantee the data
// it references will not be garbage collected, so programs must keep
// a separate, correctly typed pointer to the underlying data.
//
// Deprecated: Use unsafe.Slice or unsafe.SliceData instead.
type SliceHeader struct {
Data uintptr
Len int