Modified: MacRuby/trunk/objc.m (3475 => 3476)

--- MacRuby/trunk/objc.m	2010-02-10 09:21:54 UTC (rev 3475)
+++ MacRuby/trunk/objc.m	2010-02-10 22:52:08 UTC (rev 3476)
@@ -261,7 +261,8 @@
 	if (!RCLASS_RUBY(k)) {
 	    long v = RCLASS_VERSION(k);
 	    if (!(v & RCLASS_IS_HASH_SUBCLASS)
-		    && !(v & RCLASS_IS_ARRAY_SUBCLASS)) {
+		    && !(v & RCLASS_IS_ARRAY_SUBCLASS)
+		    && !(v & RCLASS_IS_STRING_SUBCLASS)) {
 		Class k2 = k;
 		while (k2 != NULL) {
 		    if (k2 == (Class)rb_cNSHash) {
@@ -274,6 +275,11 @@
 			RCLASS_SET_VERSION(k, v);
 			break;
 		    }
+		    else if (k2 == (Class)rb_cNSString) {
+			v |= RCLASS_IS_STRING_SUBCLASS;
+			RCLASS_SET_VERSION(k, v);
+			break;
+		    }
 		    k2 = class_getSuperclass(k2);
 		}
 	    }