geo_distance function needs to be marked strict.

tglsfdc · tglsfdc · commit a61e15a56645 · 2001-08-16T22:24:43.000Z
From Mark Stosberg.
diff --git a/contrib/earthdistance/earthdistance.sql.in b/contrib/earthdistance/earthdistance.sql.in
@@ -3,7 +3,8 @@
 
 DROP FUNCTION geo_distance (point, point);
 CREATE FUNCTION geo_distance (point, point) RETURNS float8
-  AS 'MODULE_PATHNAME' LANGUAGE 'c';
+  AS 'MODULE_PATHNAME' LANGUAGE 'c'
+  WITH (isstrict);
 
 SELECT geo_distance ('(1,2)'::point, '(3,4)'::point);
 
