From: Tobias Klauser <tklauser@distanz.ch>
Date: Fri, 18 Mar 2022 10:49:40 +0000 (+0100)
Subject: syscall: use bytealg.IndexByte in clen
X-Git-Tag: go1.19beta1~1020
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=12eca21f1c1c0f048b985a2a8545fb304b4383f6;p=gostls13.git

syscall: use bytealg.IndexByte in clen

Change-Id: Ib3f92ea8371a13471acf9304dc9db66c0aae9bf4
Reviewed-on: https://go-review.googlesource.com/c/go/+/393756
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Trust: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gopher Robot <gobot@golang.org>
---

diff --git a/src/syscall/syscall_unix.go b/src/syscall/syscall_unix.go
index c35df430aa..61ae09de4e 100644
--- a/src/syscall/syscall_unix.go
+++ b/src/syscall/syscall_unix.go
@@ -7,6 +7,7 @@
 package syscall
 
 import (
+	"internal/bytealg"
 	"internal/itoa"
 	"internal/oserror"
 	"internal/race"
@@ -34,10 +35,8 @@ func RawSyscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errn
 
 // clen returns the index of the first NULL byte in n or len(n) if n contains no NULL byte.
 func clen(n []byte) int {
-	for i := 0; i < len(n); i++ {
-		if n[i] == 0 {
-			return i
-		}
+	if i := bytealg.IndexByte(n, 0); i != -1 {
+		return i
 	}
 	return len(n)
 }