CrashHandler: Allow to deactivate the Crash Handler

...by adding QTC_NO_CRASH_HANDLER=1 to the run environment.

This is important for nightly tests since these should be able to create
a core dump file.

Change-Id: Id858b64f00315def6b4f32de972b167a293be245
Reviewed-by: Christian Kandeler <christian.kandeler@digia.com>
Reviewed-by: hjk <hjk121@nokiamail.com>

src/tools/qtcreatorcrashhandler/crashhandlerdialog.cpp

@@ -127,8 +127,10 @@ void CrashHandlerDialog::setApplicationInfo(const QString &signalName)
     const QString title = tr("%1 has closed unexpectedly (Signal \"%2\")").arg(ideName, signalName);
     const QString introLabelContents = tr(
         "<p><b>%1.</b></p>"
-        "<p>Please file a <a href='%2'>bug report</a> with the debug information provided below.</p>")
-        .arg(title, QLatin1String(URL_BUGTRACKER));
+        "<p>Please file a <a href='%2'>bug report</a> with the debug information provided below.</p>"
+        "<p>Hint: Deactivate this Crash Handler by adding QTC_NO_CRASH_HANDLER=1<br/>"
+        "to the environment (evaluated on startup of %3).</p>")
+        .arg(title, QLatin1String(URL_BUGTRACKER), ideName);
     m_ui->introLabel->setText(introLabelContents);
     setWindowTitle(title);
 

src/tools/qtcreatorcrashhandler/crashhandlerdialog.ui

@@ -37,6 +37,9 @@
        <property name="text">
         <string>Some useful information here...</string>
        </property>
+       <property name="textInteractionFlags">
+        <set>Qt::LinksAccessibleByMouse|Qt::TextSelectableByMouse</set>
+       </property>
       </widget>
      </item>
      <item>

src/tools/qtcreatorcrashhandler/crashhandlersetup.cpp

@@ -83,6 +83,9 @@ extern "C" void signalHandler(int signal)
 void setupCrashHandler()
 {
 #ifdef BUILD_CRASH_HANDLER
+    if (!qgetenv("QTC_NO_CRASH_HANDLER").isEmpty())
+        return;
+
     const QString crashHandlerPath = qApp->applicationDirPath()
         + QLatin1String("/qtcreator_crash_handler");
     crashHandlerPathC = qstrdup(qPrintable(crashHandlerPath));