Fix a stack level bug

Author: Fidget-Spinner

Lib/test/test_capi/test_opt.py

@@ -474,20 +474,6 @@ def testfunc(n, m):
         uops = get_opnames(ex)
         self.assertIn("_FOR_ITER_TIER_TWO", uops)
 
-    def test_for_iter_dict_items(self):
-
-        def testfunc(n):
-            dct = dict(zip(range(n), range(n, -1, - 1))).items()
-            for k, v in dct:
-                pass
-
-        testfunc(TIER2_THRESHOLD)
-        ex = get_first_executor(testfunc)
-        self.assertIsNotNone(ex)
-        uops = get_opnames(ex)
-
-        self.assertIn("_GUARD_NOT_EXHAUSTED_DICT_ITEMS", uops)
-
 
 
 @requires_specialization

Python/optimizer_bytecodes.c

@@ -1065,6 +1065,13 @@ dummy_func(void) {
             REPLACE_OP((this_instr + 2), _NOP, 0, 0);
             REPLACE_OP((this_instr + 3), _NOP, 0, 0);
             REPLACE_OP((this_instr + 4), _NOP, 0, 0);
+            // We need to move forward to the state of _UNPACK_SEQUENCE_TWO_TUPLE
+            CHECK_STACK_BOUNDS(2);
+            stack_pointer[0] = sym_new_not_null(ctx);
+            stack_pointer[1] = sym_new_not_null(ctx);
+            stack_pointer += 2;
+            ASSERT_WITHIN_STACK_BOUNDS(__FILE__, __LINE__);
+            break;
         }
         next = sym_new_not_null(ctx);
     }