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bytes: fix panic in bytes.Buffer.Peek

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This change fixed the overlooked offset in bytes.Buffer.Peek.
Otherwise, it will either return wrong result or panic with
"runtime error: slice bounds out of range".

Change-Id: Ic42fd8a27fb9703c51430f298933b91cf0d45451
GitHub-Last-Rev: fb97ebc3b1
GitHub-Pull-Request: golang/go#76165
Reviewed-on: https://go-review.googlesource.com/c/go/+/717640
Reviewed-by: Michael Pratt <mpratt@google.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Junyang Shao <shaojunyang@google.com>
This commit is contained in:
Aaron Chen 2025-11-13 01:43:03 +00:00 • committed by Gopher Robot
parent 0a569528ea
commit b57962b7c7
2 changed files with 13 additions and 7 deletions
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2
src/bytes/buffer.go
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@ -86,7 +86,7 @@ func (b *Buffer) Peek(n int) ([]byte, error) {
if b.Len() < n {
return b.buf[b.off:], io.EOF
}
return b.buf[b.off:n], nil
return b.buf[b.off : b.off+n], nil
}
// empty reports whether the unread portion of the buffer is empty.