[GRASS-SVN] r74387 - grass/trunk/vector/v.buffer

[svn_grass at osgeo.org]

Author: mmetz
Date: 2019-04-17 00:51:30 -0700 (Wed, 17 Apr 2019)
New Revision: 74387

Modified:
   grass/trunk/vector/v.buffer/main.c
Log:
v.buffer: +test for zero distance, see #3814

Modified: grass/trunk/vector/v.buffer/main.c
===================================================================
--- grass/trunk/vector/v.buffer/main.c	2019-04-16 16:14:06 UTC (rev 74386)
+++ grass/trunk/vector/v.buffer/main.c	2019-04-17 07:51:30 UTC (rev 74387)
@@ -666,6 +666,11 @@
 		G_debug(2, _("The tolerance in map units: %g"),
 			unit_tolerance);
 	    }
+
+	    if (da <= 0) {
+		G_warning(_("Distances must be positive, ignoring distance %g"), da);
+		continue;
+	    }
 	    
 	    Vect_line_prune(Points);
 	    if (ltype & GV_POINTS || Points->n_points == 1) {