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gh-102471: Change PyLongWriter_Discard(NULL) to do nothing (#129339)

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It's convenient to be able to call PyLongWriter_Discard(NULL) in
error handling code.
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Victor Stinner 2025-01-27 11:51:16 +01:00 • committed by GitHub
parent 11148e91e3
commit 7ec17429d4
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2 changed files with 5 additions and 1 deletions
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2
Doc/c-api/long.rst
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@ -824,6 +824,6 @@ The :c:type:`PyLongWriter` API can be used to import an integer.
Discard a :c:type:`PyLongWriter` created by :c:func:`PyLongWriter_Create`.
*writer* must not be ``NULL``.
If *writer* is ``NULL``, no operation is performed.
The writer instance and the *digits* array are invalid after the call.

4
Objects/longobject.c
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@ -6953,6 +6953,10 @@ PyLongWriter_Create(int negative, Py_ssize_t ndigits, void **digits)
void
PyLongWriter_Discard(PyLongWriter *writer)
{
if (writer == NULL) {
return;
}
PyLongObject *obj = (PyLongObject *)writer;
assert(Py_REFCNT(obj) == 1);
Py_DECREF(obj);