* file.c (rmext): no extension to strip if empty string.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@34374 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,4 +1,6 @@
-Wed Jan 25 11:32:03 2012  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+Wed Jan 25 11:40:26 2012  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* file.c (rmext): no extension to strip if empty string.
 
 	* file.c (rb_enc_path_next, rb_enc_path_skip_prefix)
 	  (rb_enc_path_last_separator, rb_enc_path_end)

file.c

@@ -3535,7 +3535,7 @@ rmext(const char *p, long l0, long l1, const char *e, long l2, rb_encoding *enc)
     unsigned int c;
     const char *s, *last;
 
-    if (!e) return 0;
+    if (!e || !l2) return 0;
 
     c = rb_enc_codepoint_len(e, e + l2, &len1, enc);
     if (rb_enc_ascget(e + len1, e + l2, &len2, enc) == '*' && len1 + len2 == l2) {