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unsafe: clarify when String bytes can be modified

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They can be modified when the string returned by String no longer exists.

Fixes #68300

Change-Id: I526a068151f7aad1ab6827504b51a84e7399cafe
Reviewed-on: https://go-review.googlesource.com/c/go/+/596955
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Commit-Queue: Ian Lance Taylor <iant@golang.org>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
This commit is contained in:
Ian Lance Taylor 2024-07-06 14:42:16 -07:00 committed by Gopher Robot
parent 5565462a86
commit 6d89b38ed8
1 changed files with 1 additions and 1 deletions
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2
src/unsafe/unsafe.go
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@ -260,7 +260,7 @@ func SliceData(slice []ArbitraryType) *ArbitraryType
// a run-time panic occurs.
//
// Since Go strings are immutable, the bytes passed to String
// must not be modified afterwards.
// must not be modified as long as the returned string value exists.
func String(ptr *byte, len IntegerType) string
// StringData returns a pointer to the underlying bytes of str.