From: ThorstenB <brehmt@gmail.com>
Date: Sat, 22 Sep 2012 12:00:05 +0000 (+0200)
Subject: Fix NavDisplay segfault
X-Git-Url: https://git.mxchange.org/?a=commitdiff_plain;h=0f3fecf0c6a17b2327054928d7ae660bb65a5e49;p=flightgear.git

Fix NavDisplay segfault
When "addSymbolInstance" returns NULL, we cannot update "ins->endPos".
---

diff --git a/src/Instrumentation/NavDisplay.cxx b/src/Instrumentation/NavDisplay.cxx
index 862d00f26..ecf9bdfc5 100644
--- a/src/Instrumentation/NavDisplay.cxx
+++ b/src/Instrumentation/NavDisplay.cxx
@@ -1172,7 +1172,7 @@ void NavDisplay::foundPositionedItem(FGPositioned* pos)
     
     BOOST_FOREACH(SymbolRule* r, rules) {
         SymbolInstance* ins = addSymbolInstance(projected, heading, r->getDefinition(), vars);
-        if (pos->type() == FGPositioned::RUNWAY) {
+        if ((ins)&&(pos->type() == FGPositioned::RUNWAY)) {
             FGRunway* rwy = (FGRunway*) pos;
             ins->endPos = projectGeod(rwy->end());
         }