From: H.G. Muller <h.g.muller@hccnet.nl>
Date: Sat, 14 Apr 2012 13:43:30 +0000 (+0200)
Subject: Fix crash due to empty PV
X-Git-Url: http://winboard.nl/cgi-bin?p=xboard.git;a=commitdiff_plain;h=27ad2c2fd3659574b7e7e44ba061b9daba4bf320

Fix crash due to empty PV

Reception of a stat01 command before the first PV could cause a crash,
as apparently the parser cannot handle this.
---

diff --git a/engineoutput.c b/engineoutput.c
index 94f2a87..157cabf 100644
--- a/engineoutput.c
+++ b/engineoutput.c
@@ -238,7 +238,7 @@ SetProgramStats (FrontEndProgramStats * stats) // now directly called by back-en
         }
     }
 
-    if(ParseOneMove(ed.pv, currentMove, &moveType, &ff, &rf, &ft, &rt, &pc))
+    if(ed.pv && ed.pv[0] && ParseOneMove(ed.pv, currentMove, &moveType, &ff, &rf, &ft, &rt, &pc))
 	ed.moveKey = (ff<<24 | rf << 16 | ft << 8 | rt) ^ pc*87161;
     else ed.moveKey = ed.nodes; // kludge to get unique key unlikely to match any move