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reflect: deprecate SliceHeader and StringHeader
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>
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@ -2742,6 +2742,8 @@ func (v Value) UnsafePointer() unsafe.Pointer {
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// Moreover, the Data field is not sufficient to guarantee the data
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// it references will not be garbage collected, so programs must keep
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// a separate, correctly typed pointer to the underlying data.
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//
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// Deprecated: Use unsafe.String or unsafe.StringData instead.
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type StringHeader struct {
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Data uintptr
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Len int
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@ -2753,6 +2755,8 @@ type StringHeader struct {
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// Moreover, the Data field is not sufficient to guarantee the data
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// it references will not be garbage collected, so programs must keep
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// a separate, correctly typed pointer to the underlying data.
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//
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// Deprecated: Use unsafe.Slice or unsafe.SliceData instead.
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type SliceHeader struct {
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Data uintptr
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Len int
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