From: Jes Cok <xigua67damn@gmail.com>
Date: Wed, 13 Sep 2023 13:07:09 +0000 (+0000)
Subject: regexp: use built-in clear to clear b.visited in *bitState.reset
X-Git-Tag: go1.22rc1~836
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=02561981291600d901db7d4886147480cf3de332;p=gostls13.git

regexp: use built-in clear to clear b.visited in *bitState.reset

Change-Id: I1a723124f7050aeb971377db8c3cd04ebf9f7a16
GitHub-Last-Rev: 465da88feb20b4a3ebea3c3e36560f6c82f7fa2e
GitHub-Pull-Request: golang/go#62611
Reviewed-on: https://go-review.googlesource.com/c/go/+/527975
Reviewed-by: qiulaidongfeng <2645477756@qq.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
---

diff --git a/src/regexp/backtrack.go b/src/regexp/backtrack.go
index 0739f5ff58..7c37c66a80 100644
--- a/src/regexp/backtrack.go
+++ b/src/regexp/backtrack.go
@@ -91,9 +91,7 @@ func (b *bitState) reset(prog *syntax.Prog, end int, ncap int) {
 		b.visited = make([]uint32, visitedSize, maxBacktrackVector/visitedBits)
 	} else {
 		b.visited = b.visited[:visitedSize]
-		for i := range b.visited {
-			b.visited[i] = 0
-		}
+		clear(b.visited) // set to 0
 	}
 
 	if cap(b.cap) < ncap {