From: NHOrus <jy6x2b32pie9@yahoo.com>
Date: Thu, 24 Aug 2017 11:24:13 +0000 (+0300)
Subject: Prevent division by zero
X-Git-Tag: 1.5~25
X-Git-Url: https://jxself.org/git/?p=open-adventure.git;a=commitdiff_plain;h=17d94c46cd7b0691cee6f244f7d569870cdc57cf

Prevent division by zero
---

diff --git a/saveresume.c b/saveresume.c
index 4378324..fdb9ffb 100644
--- a/saveresume.c
+++ b/saveresume.c
@@ -134,8 +134,12 @@ bool is_valid(struct game_t valgame)
      *  valid: no states are outside minimal or maximal value
      */
 
-    /*  Bounds check for locations
-     */
+    /* Prevent division by zero */
+    if (valgame.abbnum == 0) {
+        return false;
+    }
+
+    /*  Bounds check for locations */
     if ( valgame.chloc < -1  || valgame.chloc > NLOCATIONS  ||
          valgame.chloc < -1  || valgame.chloc > NLOCATIONS  ||
          valgame.loc < -1    || valgame.loc > NLOCATIONS    ||
@@ -144,8 +148,7 @@ bool is_valid(struct game_t valgame)
          valgame.oldloc < -1 || valgame.oldloc > NLOCATIONS) {
         return false;
     }
-    /*  Bounds check for location arrays
-     */
+    /*  Bounds check for location arrays */
     for (int i = 0; i <= NDWARVES; i++) {
         if (valgame.dloc[i]  < -1 || valgame.dloc[i]  > NLOCATIONS  ||
             valgame.odloc[i] < -1 || valgame.odloc[i] > NLOCATIONS) {