* Fix missing return after error message is set.

* Add a test case that would have caught it.

Lib/test/test_builtin.py

@@ -281,6 +281,7 @@ class BuiltinTest(unittest.TestCase):
         self.assertEqual(eval('dir()', g, m), list('xyz'))
         self.assertEqual(eval('globals()', g, m), g)
         self.assertEqual(eval('locals()', g, m), m)
+        self.assertRaises(TypeError, eval, 'a', m)
 
         # Verify that dict subclasses work as well
         class D(dict):

Python/bltinmodule.c

@@ -465,6 +465,7 @@ builtin_eval(PyObject *self, PyObject *args)
 		PyErr_SetString(PyExc_TypeError, PyMapping_Check(globals) ? 
 			"globals must be a real dict; try eval(expr, {}, mapping)"
 			: "globals must be a dict");
+		return NULL;
 	}
 	if (globals == Py_None) {
 		globals = PyEval_GetGlobals();