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encoding/base32, encoding/base64: document Decode to short buffer

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Document that if one of the Decode methods in these packages is given
a short buffer, it panics.

Fixes #69024

Change-Id: I1c0e4c74274965c1cfa0422cc8f86af4fefb1d00
Reviewed-on: https://go-review.googlesource.com/c/go/+/607499
Auto-Submit: Ian Lance Taylor <iant@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
This commit is contained in:
Ian Lance Taylor 2024-08-22 13:47:13 -07:00 committed by Gopher Robot
parent d0baac37e6
commit 7b0fdd1323
2 changed files with 4 additions and 2 deletions
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3
src/encoding/base32/base32.go
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@ -387,7 +387,8 @@ func (enc *Encoding) decode(dst, src []byte) (n int, end bool, err error) {
// Decode decodes src using the encoding enc. It writes at most
// [Encoding.DecodedLen](len(src)) bytes to dst and returns the number of bytes
// written. If src contains invalid base32 data, it will return the
// written. The caller must ensure that dst is large enough to hold all
// the decoded data. If src contains invalid base32 data, it will return the
// number of bytes successfully written and [CorruptInputError].
// Newline characters (\r and \n) are ignored.
func (enc *Encoding) Decode(dst, src []byte) (n int, err error) {

3
src/encoding/base64/base64.go
View File

@ -508,7 +508,8 @@ func (d *decoder) Read(p []byte) (n int, err error) {
// Decode decodes src using the encoding enc. It writes at most
// [Encoding.DecodedLen](len(src)) bytes to dst and returns the number of bytes
// written. If src contains invalid base64 data, it will return the
// written. The caller must ensure that dst is large enough to hold all
// the decoded data. If src contains invalid base64 data, it will return the
// number of bytes successfully written and [CorruptInputError].
// New line characters (\r and \n) are ignored.
func (enc *Encoding) Decode(dst, src []byte) (n int, err error) {