* array.c: don't recycle shared-array while sort!.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19825 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Sat Oct 18 00:47:51 2008  wanabe  <s.wanabe@gmail.com>
+
+	* array.c: don't recycle shared-array while sort!.
+
 Fri Oct 17 22:04:38 2008  wanabe  <s.wanabe@gmail.com>
 
 	* array.c: recycle shared-array when it isn't referenced.

array.c

@@ -177,7 +177,7 @@ rb_ary_decrement_share(VALUE shared)
 {
     if (shared) {
 	int num = ARY_SHARED_NUM(shared) - 1;
-	if (num == 0) {
+	if (num == 0 && RBASIC(shared)->klass) {
 	    rb_ary_free(shared);
 	    rb_gc_force_recycle(shared);
 	}