diff --git a/Lib/test/test_unicode.py b/Lib/test/test_unicode.py
@@ -1448,6 +1448,15 @@ def test_formatting_huge_precision(self):
        with self.assertRaises(ValueError):
            result = format_string % 2.34

    @support.cpython_only
    def test_formatting_huge_precision_c_limits(self):
        from _testcapi import INT_MAX

diff --git a/Misc/NEWS b/Misc/NEWS
@@ -10,6 +10,9 @@ What's New in Python 3.6.1 release candidate 1?
Core and Builtins
-----------------

- bpo-29607: Fix stack_effect computation for CALL_FUNCTION_EX.
  Patch by Matthieu Dartiailh.


diff --git a/Python/ceval.c b/Python/ceval.c
@@ -1409,9 +1409,15 @@ _PyEval_EvalFrameDefault(PyFrameObject *f, int throwflag)
        TARGET(BINARY_MODULO) {
            PyObject *divisor = POP();
            PyObject *dividend = TOP();
-            PyObject *res = PyUnicode_CheckExact(dividend) ?
-                PyUnicode_Format(dividend, divisor) :
-                PyNumber_Remainder(dividend, divisor);
            Py_DECREF(divisor);
            Py_DECREF(dividend);
            SET_TOP(res);
-Original file line number
+Diff line change
@@ @@ -10,6 +10,9 @@ What's New in Python 3.6.1 release candidate 1? @@
     Core and Builtins
     -----------------
     - bpo-29607: Fix stack_effect computation for CALL_FUNCTION_EX.
       Patch by Matthieu Dartiailh.
@@ Expand Down @@