bpo-35461: Document C API functions which suppress exceptions. (GH-11119)
diff --git a/Doc/c-api/buffer.rst b/Doc/c-api/buffer.rst
index 33abb5b..c7c1e3c 100644
--- a/Doc/c-api/buffer.rst
+++ b/Doc/c-api/buffer.rst
@@ -429,7 +429,7 @@
Return ``1`` if *obj* supports the buffer interface otherwise ``0``. When ``1`` is
returned, it doesn't guarantee that :c:func:`PyObject_GetBuffer` will
- succeed.
+ succeed. This function always succeeds.
.. c:function:: int PyObject_GetBuffer(PyObject *exporter, Py_buffer *view, int flags)
@@ -470,7 +470,7 @@
Return ``1`` if the memory defined by the *view* is C-style (*order* is
``'C'``) or Fortran-style (*order* is ``'F'``) :term:`contiguous` or either one
- (*order* is ``'A'``). Return ``0`` otherwise.
+ (*order* is ``'A'``). Return ``0`` otherwise. This function always succeeds.
.. c:function:: int PyBuffer_ToContiguous(void *buf, Py_buffer *src, Py_ssize_t len, char order)