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--- nodeop.c.orig Tue Mar 15 18:15:58 1994
+++ nodeop.c Wed Jun 6 15:03:28 2001
@@ -142,7 +142,8 @@
/* for each child */
for(np = nodep->child; NODE_NULL != np; np = np->peer){
- double height = h * np->size / nodep->size;
+ /* When nodep->size is 0, 'divided by zero' will be raised */
+ double height = (nodep->size != 0 ? h * np->size / nodep->size : 0);
drawrect(np, y, height, depth);
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