Make Qt exception safer.

Squashed commit of the branch haralds-haralds-qt-s60-topics/topic/exceptions,
which also contains the full history.

Rev-By: Harald Fernengel
Rev-By: Ralf Engels

3 files changed, 9 insertions, 4 deletions

diff --git a/src/network/socket/qlocalsocket_unix.cpp b/src/network/socket/qlocalsocket_unix.cpp
index 9e3cbde..03723cf 100644
--- a/src/network/socket/qlocalsocket_unix.cpp
+++ b/src/network/socket/qlocalsocket_unix.cpp
@@ -305,7 +305,7 @@ void QLocalSocketPrivate::_q_connectToSocket()
         case EAGAIN:
             // Try again later, all of the sockets listening are full
             if (!delayConnect) {
-                delayConnect = new QSocketNotifier(connectingSocket, QSocketNotifier::Write);
+                delayConnect = new QSocketNotifier(connectingSocket, QSocketNotifier::Write, q);
                 q->connect(delayConnect, SIGNAL(activated(int)), q, SLOT(_q_connectToSocket()));
             }
             if (!connectTimer) {
diff --git a/src/network/socket/qsocks5socketengine.cpp b/src/network/socket/qsocks5socketengine.cpp
index b6b0e89..98666c2 100644
--- a/src/network/socket/qsocks5socketengine.cpp
+++ b/src/network/socket/qsocks5socketengine.cpp
@@ -1834,9 +1834,9 @@ QSocks5SocketEngineHandler::createSocketEngine(QAbstractSocket::SocketType socke
         QSOCKS5_DEBUG << "not proxying";
         return 0;
     }
-    QSocks5SocketEngine *engine = new QSocks5SocketEngine(parent);
+    QScopedPointer<QSocks5SocketEngine> engine(new QSocks5SocketEngine(parent));
     engine->setProxy(proxy);
-    return engine;
+    return engine.take();
 }
 
 QAbstractSocketEngine *QSocks5SocketEngineHandler::createSocketEngine(int socketDescriptor, QObject *parent)
diff --git a/src/network/socket/qtcpserver.cpp b/src/network/socket/qtcpserver.cpp
index c1fedc3..1978ee2 100644
--- a/src/network/socket/qtcpserver.cpp
+++ b/src/network/socket/qtcpserver.cpp
@@ -354,7 +354,12 @@ void QTcpServer::close()
 
     if (d->socketEngine) {
         d->socketEngine->close();
-        d->socketEngine->deleteLater();
+        QT_TRY {
+            d->socketEngine->deleteLater();
+        } QT_CATCH(const std::bad_alloc &) {
+            // in out of memory situations, the socketEngine
+            // will be deleted in ~QTcpServer (it's a child-object of this)
+        }
         d->socketEngine = 0;
     }