2 files changed, 15 insertions, 12 deletions
diff --git a/src/corelib/io/qdebug.cpp b/src/corelib/io/qdebug.cpp
index 79038e9138..44d0a788ff 100644
--- a/src/corelib/io/qdebug.cpp
+++ b/src/corelib/io/qdebug.cpp
@@ -128,6 +128,20 @@ QT_BEGIN_NAMESPACE
 
     Flushes any pending data to be written and destroys the debug stream.
 */
+// Has been defined in the header / inlined before Qt 5.4
+QDebug::~QDebug()
+{
+    if (!--stream->ref) {
+        if (stream->space && stream->buffer.endsWith(QLatin1Char(' ')))
+            stream->buffer.chop(1);
+        if (stream->message_output) {
+            qt_message_output(stream->type,
+                              stream->context,
+                              stream->buffer);
+        }
+        delete stream;
+    }
+}
 
 /*!
     \fn QDebug::swap(QDebug &other)
diff --git a/src/corelib/io/qdebug.h b/src/corelib/io/qdebug.h
index a1294d0b40..94b19f9cab 100644
--- a/src/corelib/io/qdebug.h
+++ b/src/corelib/io/qdebug.h
@@ -78,18 +78,7 @@ public:
     inline QDebug(QtMsgType t) : stream(new Stream(t)) {}
     inline QDebug(const QDebug &o):stream(o.stream) { ++stream->ref; }
     inline QDebug &operator=(const QDebug &other);
-    inline ~QDebug() {
-        if (!--stream->ref) {
-            if (stream->space && stream->buffer.endsWith(QLatin1Char(' ')))
-                stream->buffer.chop(1);
-            if (stream->message_output) {
-                qt_message_output(stream->type,
-                                  stream->context,
-                                  stream->buffer);
-            }
-            delete stream;
-        }
-    }
+    ~QDebug();
     inline void swap(QDebug &other) { qSwap(stream, other.stream); }
 
     inline QDebug &space() { stream->space = true; stream->ts << ' '; return *this; }