6e50991d2a
Unquote implements unescaping a "single-quoted, doubled-quoted, or backquoted Go string literal". Therefore, it should reject anything that the Go specification explicitly forbids. The section on "Rune literals" explicitly rejects rune values "above 0x10FFFF and surrogate halves". We properly checked for the previous condition, but were failing to check for the latter. In general, "r > utf8.MaxRune" is probably the wrong check, while !utf8.ValidRune(r) is the more correct check. We make changes to both UnquoteChar and appendEscapedRune to use the correct check. The change to appendEscapedRune is technically a noop since callers of that function already guarantee that the provided rune is valid. Fixes #47853 Change-Id: Ib8977e56b91943ec8ada821b8d217b5e9a66f950 Reviewed-on: https://go-review.googlesource.com/c/go/+/343877 Trust: Joe Tsai <joetsai@digital-static.net> Run-TryBot: Joe Tsai <joetsai@digital-static.net> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Rob Pike <r@golang.org> |
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SECURITY.md |
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