--- a/mercurial/cext/revlog.c	Fri Mar 06 16:49:46 2020 +0100
+++ b/mercurial/cext/revlog.c	Sun Mar 08 16:40:39 2020 +0100
@@ -208,7 +208,7 @@
  *
  * Returns 0 on success or -1 on failure.
  */
-int HgRevlogIndex_GetParents(PyObject *op, int rev, int *ps)
+static int HgRevlogIndex_GetParents(PyObject *op, int rev, int *ps)
 {
 	int tiprev;
 	if (!op || !HgRevlogIndex_Check(op) || !ps) {