From: Russ Cox <rsc@golang.org>
Date: Tue, 31 Jan 2012 23:38:33 +0000 (-0500)
Subject: fmt: fix caching bug in Scan
X-Git-Tag: weekly.2012-02-07~163
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=d7c04517a031547ec0e66d3b4e619cbd26d77fcf;p=gostls13.git

fmt: fix caching bug in Scan

Black box test is too time-consuming, as the bug
does not appear until Scan has processed 2 GB of
input in total across multiple calls, so no test.

Thanks to Frederick Mayle for the diagnosis and fix.

Fixes #2809.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/5611043
---

diff --git a/src/pkg/fmt/scan.go b/src/pkg/fmt/scan.go
index 281525112e..36c6aebad0 100644
--- a/src/pkg/fmt/scan.go
+++ b/src/pkg/fmt/scan.go
@@ -366,6 +366,7 @@ func newScanState(r io.Reader, nlIsSpace, nlIsEnd bool) (s *ss, old ssave) {
 	s.fieldLimit = hugeWid
 	s.maxWid = hugeWid
 	s.validSave = true
+	s.count = 0
 	return
 }