changeset:   106218:ee6e1b1151a8
user:        Victor Stinner <victor.stinner@gmail.com>
date:        Wed Jan 18 14:06:38 2017 +0100
files:       Objects/abstract.c
description:
_PyObject_FastCallKeywords() now checks !PyErr_Occurred()

Issue #29259. All other functions calling functions start with the similar
assertion.


diff -r a8d35309dcc0 -r ee6e1b1151a8 Objects/abstract.c
--- a/Objects/abstract.c	Wed Jan 18 14:04:37 2017 +0100
+++ b/Objects/abstract.c	Wed Jan 18 14:06:38 2017 +0100
@@ -2482,6 +2482,11 @@
 _PyObject_FastCallKeywords(PyObject *callable, PyObject **stack, Py_ssize_t nargs,
                            PyObject *kwnames)
 {
+    /* _PyObject_FastCallKeywords() must not be called with an exception set,
+       because it can clear it (directly or indirectly) and so the
+       caller loses its exception */
+    assert(!PyErr_Occurred());
+
     assert(nargs >= 0);
     assert(kwnames == NULL || PyTuple_CheckExact(kwnames));