test for ticket #533: reference leak in 'continue' statement

tests/bugs.txt

@@ -9,6 +9,7 @@ missing_baseclass_in_predecl_T262
 cfunc_call_tuple_args_T408
 cascaded_list_unpacking_T467
 compile.cpp_operators
+for_in_break_continue_T533
 
 # CPython regression tests that don't current work:
 pyregr.test_threadsignals

tests/run/for_in_break_continue_T533.pyx

+
+def for_in():
+    """
+    >>> for_in()
+    6
+    """
+    i = -1
+    for L in [[], range(5), range(10)]:
+        for i in L:
+            if i > 5:
+                break
+        else:
+            continue
+        break
+    return i