X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=hacks%2Fepicycle.c;h=65a468162ef9fe5dcbfb7974600652edbd337e31;hb=6a1da724858673ac40aa13a9612340d8bed8c7b9;hp=3732cb8e2ff49644b10223968880b67fa60f91d4;hpb=0ed85ca0e4b0eae40a4f50a51d63f2f41e45373a;p=xscreensaver

diff --git a/hacks/epicycle.c b/hacks/epicycle.c
index 3732cb8e..65a46816 100644
--- a/hacks/epicycle.c
+++ b/hacks/epicycle.c
@@ -266,7 +266,10 @@ new_circle_chain(void)
   
   /* There are between minCircles and maxCircles in each figure.
    */
-  n = minCircles + random() % (maxCircles - minCircles);
+  if (maxCircles == minCircles)
+    n = minCircles;            /* Avoid division by zero. */
+  else
+    n = minCircles + random() % (maxCircles - minCircles);
   
   head = NULL;
   while (n--)
@@ -584,7 +587,6 @@ setup(void)
     }
   else
     {
-      XWindowAttributes xgwa;
       XGetWindowAttributes (dpy, window, &xgwa);
       XSelectInput (dpy, window,
                     xgwa.your_event_mask | ExposureMask |