* util.c (mblen): fix overrun. [ruby-dev:22672]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@5587 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 6 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 5d44a9d305..1a9b1a443b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Thu Jan 29 23:56:00 2004  WATANABE Hirofumi  <eban@ruby-lang.org>
+
+	* util.c (mblen): fix overrun.  [ruby-dev:22672]
+
 Thu Jan 29 15:33:23 2004  GOTOU Yuuzou  <gotoyuzo@notwork.org>
 
 	* ext/openssl/ossl_x509hame.c (ossl_x509name_initialize): change
diff --git a/util.c b/util.c
index cb0b4912f4..437632861e 100644
--- a/util.c
+++ b/util.c
@@ -296,6 +296,8 @@ mblen(const char *s, size_t n)
     if (s) {
 	if (n == 0 || *s == 0)
 	    return 0;
+	else if (!s[1])
+	    return 1;
 	return dbcs_table[(unsigned char)*s] + 1;
     }
     else