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reflect: document that InterfaceData is a low-entropy RNG

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Change-Id: Ie26b9060630e2e774ac23d8492eaaf785bfca6b7
Reviewed-on: https://go-review.googlesource.com/c/go/+/330709
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Matthew Dempsky <mdempsky@google.com>
This commit is contained in:
Matthew Dempsky 2021-06-24 10:44:39 -07:00
parent cce621431a
commit c309c89db5
1 changed files with 8 additions and 2 deletions
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10
src/reflect/value.go
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@ -1381,10 +1381,16 @@ func valueInterface(v Value, safe bool) interface{} {
return packEface(v)
}
// InterfaceData returns the interface v's value as a uintptr pair.
// InterfaceData returns a pair of unspecified uintptr values.
// It panics if v's Kind is not Interface.
//
// In earlier versions of Go, this function returned the interface's
// value as a uintptr pair. As of Go 1.4, the implementation of
// interface values precludes any defined use of InterfaceData.
//
// Deprecated: The memory representation of interface values is not
// compatible with InterfaceData.
func (v Value) InterfaceData() [2]uintptr {
// TODO: deprecate this
v.mustBe(Interface)
// We treat this as a read operation, so we allow
// it even for unexported data, because the caller