# HG changeset patch
# User Martin von Zweigbergk <martinvonz@google.com>
# Date 1533448105 25200
# Node ID 4c0fd3f0a15d08fbe2951fd19813a8e7ec430415
# Parent  aa33988ad8ab4497e656d184ff322dddb506b0fc
index: drop support for nullid at position len(index) in index_node

I think no callers exist since at least a3dacabd476b (index: don't
allow index[len(index)] to mean nullid, 2018-07-20).

Differential Revision: https://phab.mercurial-scm.org/D4105

diff -r aa33988ad8ab -r 4c0fd3f0a15d mercurial/cext/revlog.c
--- a/mercurial/cext/revlog.c	Sat Aug 04 23:15:03 2018 -0700
+++ b/mercurial/cext/revlog.c	Sat Aug 04 22:48:25 2018 -0700
@@ -228,10 +228,10 @@
 	Py_ssize_t length = index_length(self) + 1;
 	const char *data;
 
-	if (pos == length - 1 || pos == -1)
+	if (pos == -1)
 		return nullid;
 
-	if (pos >= length)
+	if (pos >= length - 1)
 		return NULL;
 
 	if (pos >= self->length - 1) {