From: Paul Ramsey <pramsey@cleverelephant.ca>
Date: Mon, 23 Feb 2015 14:39:22 +0000 (+0000)
Subject: #3053: possible bug in geometry_geometrytype (strncat overlap)
X-Git-Tag: 2.2.0rc1~642
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=084497f37c5fe3879a253cb6a0bab1076ecb9170;p=postgis

#3053: possible bug in geometry_geometrytype (strncat overlap)


git-svn-id: http://svn.osgeo.org/postgis/trunk@13269 b70326c6-7e19-0410-871a-916f4a2858ee
---

diff --git a/postgis/lwgeom_ogc.c b/postgis/lwgeom_ogc.c
index 33fed1f41..e753215a4 100644
--- a/postgis/lwgeom_ogc.c
+++ b/postgis/lwgeom_ogc.c
@@ -180,7 +180,7 @@ Datum geometry_geometrytype(PG_FUNCTION_ARGS)
 
 	/* Build up the output string */
 	strncat(type_str, "ST_", type_str_len);
-	strncat(type_str, lwtype_name(gserialized_get_type(gser)), type_str_len);
+	strncat(type_str, lwtype_name(gserialized_get_type(gser)), type_str_len - 3);
 	
 	/* Build a text type to store things in */
 	type_text = cstring2text(type_str);