[postgis-tickets] r17358 - Catch un-defaulted final parameter

[Paul Ramsey]

Author: pramsey
Date: 2019-03-25 11:20:10 -0700 (Mon, 25 Mar 2019)
New Revision: 17358

Modified:
   trunk/postgis/lwgeom_geos.c
Log:
Catch un-defaulted final parameter
References #4353


Modified: trunk/postgis/lwgeom_geos.c
===================================================================
--- trunk/postgis/lwgeom_geos.c	2019-03-25 17:39:09 UTC (rev 17357)
+++ trunk/postgis/lwgeom_geos.c	2019-03-25 18:20:10 UTC (rev 17358)
@@ -806,8 +806,18 @@
 
 	GSERIALIZED	*geom1 = PG_GETARG_GSERIALIZED_P(0);
 	double size = PG_GETARG_FLOAT8(1);
-	text *params_text = PG_GETARG_TEXT_P(2);
+	text *params_text;
 
+	if (PG_NARGS() > 2)
+	{
+		params_text = PG_GETARG_TEXT_P(2);
+	}
+	else
+	{
+		params_text = palloc(VARHDRSZ);
+		SET_VARSIZE(params_text, 0);
+	}
+
 	/* Empty.Buffer() == Empty[polygon] */
 	if ( gserialized_is_empty(geom1) )
 	{