Add a new Q_GLOBAL_STATIC implementation

Unlike the previous implementation, this implementation is locked:
only one initialisation is ever run at the same time. It is
exception-safe, meaning that a throwing constructor will restart the
process.

Also, start using the thread-safe behaviour that GCC has offered for a
long time and C++11 requires.

Change-Id: I20db44f57d258923df64c0051358fd0d9a5ccd51
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: David Faure (KDE) <faure@kde.org>
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@digia.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/tests/auto/corelib/kernel/qobject/tst_qobject.cpp b/tests/auto/corelib/kernel/qobject/tst_qobject.cpp
index 581644b19f..d7add383e1 100644
--- a/tests/auto/corelib/kernel/qobject/tst_qobject.cpp
+++ b/tests/auto/corelib/kernel/qobject/tst_qobject.cpp
@@ -144,6 +144,16 @@ private slots:
     void disconnectDoesNotLeakFunctor();
 };
 
+struct QObjectCreatedOnShutdown
+{
+    QObjectCreatedOnShutdown() {}
+    ~QObjectCreatedOnShutdown()
+    {
+        QObject();
+    }
+};
+static QObjectCreatedOnShutdown s_qobjectCreatedOnShutdown;
+
 class SenderObject : public QObject
 {
     Q_OBJECT