From: H.G. Muller <h.g.muller@hccnet.nl>
Date: Thu, 19 Apr 2012 08:48:41 +0000 (+0200)
Subject: Fix crash on time forfeit with -st option
X-Git-Url: http://winboard.nl/cgi-bin?a=commitdiff_plain;h=25a2de7c48d693f8dd3ecc8dd9b794b140f2bdaf;hp=7c9ee0544821f7981792be03e90ba15e9a8aeada;p=xboard.git

Fix crash on time forfeit with -st option

When fixed time per move was set from the command line, the time-control
strings were not set. This let to a crash when an engine forfeited.
The GetTimeQuota function is now made resistant to a NULL pointer here.
---

diff --git a/backend.c b/backend.c
index af2b247..634b710 100644
--- a/backend.c
+++ b/backend.c
@@ -1252,7 +1252,7 @@ GetTimeQuota (int movenr, int lastUsed, char *tcString)
     long time, increment;
     char *s = tcString;
 
-    if(!*s) return 0; // empty TC string means we ran out of the last sudden-death version
+    if(!s || !*s) return 0; // empty TC string means we ran out of the last sudden-death version
     do {
         if(moves) NextSessionFromString(&s, &moves, &time, &increment, &incType);
         nextSession = s; suddenDeath = moves == 0 && increment == 0;