QDebug: reduce template bloat

When streaming non-Q_FLAG QFlags, factor the common code
into a helper function only templated on QFlags<T>::Int
and pass what varies as parameters.

Then overload the helper function for the most common int
type (int) as an out-of-line function, implemented via the
primary template to avoid the two going out of sync.

That leaves the primary helper template only for special
cases (such as future extensions).

Change-Id: I70e0001bcfacab9f8765c9b1075fe80b596223f1
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/src/corelib/io/qdebug.cpp b/src/corelib/io/qdebug.cpp
index 002c9bcda2..4f85ceb084 100644
--- a/src/corelib/io/qdebug.cpp
+++ b/src/corelib/io/qdebug.cpp
@@ -867,6 +867,19 @@ QDebugStateSaver::~QDebugStateSaver()
     d->restoreState();
 }
 
+/*!
+    \internal
+
+    Specialization of the primary template in qdebug.h to out-of-line
+    the common case of QFlags<T>::Int being int.
+
+    Just call the generic version so the two don't get out of sync.
+*/
+void qt_QMetaEnum_flagDebugOperator(QDebug &debug, size_t sizeofT, int value)
+{
+    qt_QMetaEnum_flagDebugOperator<int>(debug, sizeofT, value);
+}
+
 #ifndef QT_NO_QOBJECT
 /*!
     \internal