[GRASS-SVN] r54090 - grass/trunk/lib/vector/diglib

[svn_grass at osgeo.org]

Author: martinl
Date: 2012-11-28 08:34:03 -0800 (Wed, 28 Nov 2012)
New Revision: 54090

Modified:
   grass/trunk/lib/vector/diglib/plus_area.c
Log:
dig_angle_next_line(): avoid segfault on dead line


Modified: grass/trunk/lib/vector/diglib/plus_area.c
===================================================================
--- grass/trunk/lib/vector/diglib/plus_area.c	2012-11-28 16:24:22 UTC (rev 54089)
+++ grass/trunk/lib/vector/diglib/plus_area.c	2012-11-28 16:34:03 UTC (rev 54090)
@@ -570,7 +570,12 @@
 
 	line = abs(Node->lines[next]);
 	Line = plus->Line[line];
-
+        if (!Line) {
+            G_warning(_("Unable to find next line for %d. Dead line found."),
+                      current_line);
+            return 0;
+        }
+        
 	if (Line->type & type) {	/* line found */
 	    G_debug(3, "  this one");
 	    if (angle)