diff --git a/mercurial/cext/revlog.c b/mercurial/cext/revlog.c index b54727f825118b79ee5ca0a367c0c02bdbd7c3f2_bWVyY3VyaWFsL2NleHQvcmV2bG9nLmM=..c6939b353ebd2b5b6fe383bd009a5315d52717c6_bWVyY3VyaWFsL2NleHQvcmV2bG9nLmM= 100644 --- a/mercurial/cext/revlog.c +++ b/mercurial/cext/revlog.c @@ -261,6 +261,9 @@ static inline int index_get_length(indexObject *self, Py_ssize_t rev) { + if (rev == nullrev) { + return 0; + } if (rev >= self->length) { PyObject *tuple; PyObject *pylong;