1 files changed, 7 insertions, 0 deletions
diff --git a/src/dbus/qdbusextratypes.cpp b/src/dbus/qdbusextratypes.cpp
index 61f2075443..355a764e9c 100644
--- a/src/dbus/qdbusextratypes.cpp
+++ b/src/dbus/qdbusextratypes.cpp
@@ -13,6 +13,11 @@ QT_IMPL_METATYPE_EXTERN(QDBusObjectPath)
 QT_IMPL_METATYPE_EXTERN(QDBusSignature)
 
 #ifndef QT_NO_DEBUG_STREAM
+/*!
+    \fn QDebug QDBusObjectPath::operator<<(QDebug dbg, const QDBusObjectPath &path)
+    \since 6.8
+    Writes the contents of \a path to \a dbg.
+*/
 QDebug operator<<(QDebug dbg, const QDBusObjectPath &path)
 {
     QDebugStateSaver saver(dbg);
@@ -34,6 +39,8 @@ void QDBusSignature::doCheck()
     if (!QDBusUtil::isValidSignature(m_signature)) {
         qWarning("QDBusSignature: invalid signature \"%s\"", qPrintable(m_signature));
         m_signature.clear();
+    } else if (m_signature.isEmpty()) {
+        m_signature.detach();       // we need it to not be null
     }
 }