dir.c: check boundary

* dir.c (glob_make_pattern): check boundary before accessing.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45957 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 1 deletions

diff --git a/dir.c b/dir.c
index 777fa55b63..35e9aa71d2 100644
--- a/dir.c
+++ b/dir.c
@@ -1200,7 +1200,7 @@ glob_make_pattern(const char *p, const char *e, int flags, rb_encoding *enc)
     while (p < e && *p) {
 	tmp = GLOB_ALLOC(struct glob_pattern);
 	if (!tmp) goto error;
-	if (p[0] == '*' && p[1] == '*' && p[2] == '/') {
+	if (p + 2 < e && p[0] == '*' && p[1] == '*' && p[2] == '/') {
 	    /* fold continuous RECURSIVEs (needed in glob_helper) */
 	    do { p += 3; while (*p == '/') p++; } while (p[0] == '*' && p[1] == '*' && p[2] == '/');
 	    tmp->type = RECURSIVE;