--- a\srcglcontrols\iup_gldraw.c	Thu Aug 04 14:58:16 2016
+++ b\srcglcontrols\iup_gldraw.c	Tue Jan 16 22:41:14 2018
@@ -327,8 +327,7 @@
 
 void iupGLDrawArrow(Ihandle *ih, int x, int y, int size, const char* color, int active, int dir)
 {
-  int points[6];
-
+  int points[6] = {0};
   int off1 = iupRound((double)size * 0.13);
   int off2   = iupRound((double)size * 0.87);
   int half = size / 2;