2 files changed, 5 insertions, 1 deletions
diff --git a/ChangeLog b/ChangeLog
index 5986b240f8..acf758a695 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sun Oct 18 19:14:21 2009  Tanaka Akira  <akr@fsij.org>
+
+	* parse.y (is_special_global_name): add boundary check.
+
 Sun Oct 18 18:31:58 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* ruby.c (ruby_init_loadpath_safe): should not dup tmp string.  a
diff --git a/parse.y b/parse.y
index 507ff06a4a..18b440331a 100644
--- a/parse.y
+++ b/parse.y
@@ -9278,7 +9278,7 @@ is_special_global_name(const char *m, const char *e, rb_encoding *enc)
 	do {
 	    if (!ISASCII(*m)) mb = 1;
 	    ++m;
-	} while (rb_enc_isdigit(*m, enc));
+	} while (m < e && rb_enc_isdigit(*m, enc));
     }
     return m == e ? mb + 1 : 0;
 }