From f6ab135517d9c45b711d732bc02f107c2ee8ca1e Mon Sep 17 00:00:00 2001
From: dt <qtc-committer@nokia.com>
Date: Thu, 3 Sep 2009 17:45:55 +0200
Subject: [PATCH] Fix potential crash. (cherry picked from commit
 778db1bf2df839b9cbe969333d22a65083ab74f6)

---
 src/plugins/qt4projectmanager/makestep.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/plugins/qt4projectmanager/makestep.cpp b/src/plugins/qt4projectmanager/makestep.cpp
index e22eea26d68..acc1db3a8fc 100644
--- a/src/plugins/qt4projectmanager/makestep.cpp
+++ b/src/plugins/qt4projectmanager/makestep.cpp
@@ -220,7 +220,10 @@ void MakeStepConfigWidget::updateDetails()
     // so we only do it for unix and if the user didn't override the make command
     // but for now this is the least invasive change
     QStringList args = m_makeStep->value(m_buildConfiguration, "makeargs").toStringList();
-    ProjectExplorer::ToolChain::ToolChainType t = qobject_cast<Qt4Project *>(pro)->toolChain(m_buildConfiguration)->type();
+    ProjectExplorer::ToolChain::ToolChainType t = ProjectExplorer::ToolChain::UNKNOWN;
+    ProjectExplorer::ToolChain *toolChain = qobject_cast<Qt4Project *>(pro)->toolChain(m_buildConfiguration);
+    if (toolChain)
+        t = toolChain->type();
     if (t != ProjectExplorer::ToolChain::MSVC && t != ProjectExplorer::ToolChain::WINCE) {
         if (m_makeStep->value(m_buildConfiguration, "makeCmd").toString().isEmpty())
             args << "-w";