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authorKeith Randall <khr@golang.org>2024-10-28 14:15:13 -0700
committerKeith Randall <khr@golang.org>2024-10-29 16:47:05 +0000
commit4b30a40d8856cc3f6c8f629a9f825feeaf9848af (patch)
tree696fe852c91504a49caa1705b7f5db53d751cd9c /src/bytes/buffer.go
parent4dcbb00be200bc1f88b534c311ed4289eb2fbdd5 (diff)
downloadgo-4b30a40d8856cc3f6c8f629a9f825feeaf9848af.tar.xz
strings,bytes: use result of copy in subsequent slicing
This can get rid of a bounds check. Followup to CL 622240. Change-Id: I9d0a2c0408b8d274c46136d32d7a5fb09b4aad1c Reviewed-on: https://go-review.googlesource.com/c/go/+/622955 Reviewed-by: David Chase <drchase@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
Diffstat (limited to 'src/bytes/buffer.go')
-rw-r--r--src/bytes/buffer.go4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/bytes/buffer.go b/src/bytes/buffer.go
index 4176d670ec..f90d9eca0f 100644
--- a/src/bytes/buffer.go
+++ b/src/bytes/buffer.go
@@ -247,8 +247,8 @@ func growSlice(b []byte, n int) []byte {
c = 2 * cap(b)
}
b2 := append([]byte(nil), make([]byte, c)...)
- copy(b2, b)
- return b2[:len(b)]
+ i := copy(b2, b)
+ return b2[:i]
}
// WriteTo writes data to w until the buffer is drained or an error occurs.