1 files changed, 13 insertions, 0 deletions
diff --git a/src/backend/utils/adt/tsquery_gist.c b/src/backend/utils/adt/tsquery_gist.c
index 02693bd0ee8..5eebf216c07 100644
--- a/src/backend/utils/adt/tsquery_gist.c
+++ b/src/backend/utils/adt/tsquery_gist.c
@@ -262,3 +262,16 @@ gtsquery_picksplit(PG_FUNCTION_ARGS)
 
 	PG_RETURN_POINTER(v);
 }
+
+/*
+ * Formerly, gtsquery_consistent was declared in pg_proc.h with arguments
+ * that did not match the documented conventions for GiST support functions.
+ * We fixed that, but we still need a pg_proc entry with the old signature
+ * to support reloading pre-9.6 contrib/tsearch2 opclass declarations.
+ * This compatibility function should go away eventually.
+ */
+Datum
+gtsquery_consistent_oldsig(PG_FUNCTION_ARGS)
+{
+	return gtsquery_consistent(fcinfo);
+}