2 files changed, 5 insertions, 1 deletions
diff --git a/Python/optimizer_bytecodes.c b/Python/optimizer_bytecodes.c
index ff2830d3003..040e54479b7 100644
--- a/Python/optimizer_bytecodes.c
+++ b/Python/optimizer_bytecodes.c
@@ -1055,6 +1055,10 @@ dummy_func(void) {
         sym_set_const(callable, (PyObject *)&PyUnicode_Type);
     }
 
+    op(_CALL_LEN, (callable[1], self_or_null[1], args[oparg] -- res)) {
+        res = sym_new_type(ctx, &PyLong_Type);
+    }
+
 // END BYTECODES //
 
 }
diff --git a/Python/optimizer_cases.c.h b/Python/optimizer_cases.c.h
index 303e402b759..9a5a362ec19 100644
--- a/Python/optimizer_cases.c.h
+++ b/Python/optimizer_cases.c.h
@@ -2014,7 +2014,7 @@
 
         case _CALL_LEN: {
             JitOptSymbol *res;
-            res = sym_new_not_null(ctx);
+            res = sym_new_type(ctx, &PyLong_Type);
             stack_pointer[-2 - oparg] = res;
             stack_pointer += -1 - oparg;
             assert(WITHIN_STACK_BOUNDS());