bpo-42979: Enhance abstract.c assertions checking slot result (GH-24352)
* bpo-42979: Enhance abstract.c assertions checking slot result
Add _Py_CheckSlotResult() function which fails with a fatal error if
a slot function succeeded with an exception set or failed with no
exception set: write the slot name, the type name and the current
exception (if an exception is set).
diff --git a/Include/cpython/abstract.h b/Include/cpython/abstract.h
index 1083942..7a4219c 100644
--- a/Include/cpython/abstract.h
+++ b/Include/cpython/abstract.h
@@ -376,4 +376,4 @@ PyAPI_FUNC(void) _Py_add_one_to_index_C(int nd, Py_ssize_t *index,
PyAPI_FUNC(int) _Py_convert_optional_to_ssize_t(PyObject *, void *);
/* Same as PyNumber_Index but can return an instance of a subclass of int. */
-PyAPI_FUNC(PyObject *) _PyNumber_Index(PyObject *o);
\ No newline at end of file
+PyAPI_FUNC(PyObject *) _PyNumber_Index(PyObject *o);