Do not crash on Symbian

The qml debugging enabler in QtDeclarative made any Qt app crash
which used QDeclarative. Reason was that QtDeclarative.dll tried
to directly access (private) writable static data from QtGui.dll.

This patch adds an accessor function for the data to QtGui, and
the crash is gone.

Done-by: Kai Koehne
Reviewed-by: Kai Koehne
(cherry picked from commit 2362d8b1e9fa86da1d3cc5dbb7d4467ec12311e1)

Conflicts:

	src/declarative/debugger/qdeclarativedebugservice.cpp

5 files changed, 23 insertions, 13 deletions

diff --git a/src/declarative/debugger/qdeclarativedebugservice.cpp b/src/declarative/debugger/qdeclarativedebugservice.cpp
index bdbc8bf4dd..66009f6a34 100644
--- a/src/declarative/debugger/qdeclarativedebugservice.cpp
+++ b/src/declarative/debugger/qdeclarativedebugservice.cpp
@@ -204,13 +204,13 @@ QDeclarativeDebugServer *QDeclarativeDebugServer::instance()
         bool ok = false;
 
         // format: qmljsdebugger=port:3768[,block]
-        if (!appD->qmljsDebugArguments.isEmpty()) {
+        if (!appD->qmljsDebugArgumentsString().isEmpty()) {
 
-            if (appD->qmljsDebugArguments.indexOf(QLatin1String("port:")) == 0) {
-                int separatorIndex = appD->qmljsDebugArguments.indexOf(QLatin1Char(','));
-                port = appD->qmljsDebugArguments.mid(5, separatorIndex - 5).toInt(&ok);
+            if (appD->qmljsDebugArgumentsString().indexOf(QLatin1String("port:")) == 0) {
+                int separatorIndex = appD->qmljsDebugArgumentsString().indexOf(QLatin1Char(','));
+                port = appD->qmljsDebugArgumentsString().mid(5, separatorIndex - 5).toInt(&ok);
             }
-            block = appD->qmljsDebugArguments.contains(QLatin1String("block"));
+            block = appD->qmljsDebugArgumentsString().contains(QLatin1String("block"));
 
             if (ok) {
                 server = new QDeclarativeDebugServer(port);
@@ -219,9 +219,9 @@ QDeclarativeDebugServer *QDeclarativeDebugServer::instance()
                     server->waitForConnection();
                 }
             } else {
-                qWarning(QString("QDeclarativeDebugServer: Ignoring \"-qmljsdebugger=%1\". "
-                                 "Format is -qmljsdebugger=port:<port>[,block]").arg(
-                             appD->qmljsDebugArguments).toAscii().constData());
+                qWarning(QString::fromAscii("QDeclarativeDebugServer: Ignoring \"-qmljsdebugger=%1\". "
+                                            "Format is -qmljsdebugger=port:<port>[,block]").arg(
+                             appD->qmljsDebugArgumentsString()).toAscii().constData());
             }
         }
 #endif
diff --git a/src/gui/kernel/qapplication.cpp b/src/gui/kernel/qapplication.cpp
index 745cd2e906..64237abcef 100644
--- a/src/gui/kernel/qapplication.cpp
+++ b/src/gui/kernel/qapplication.cpp
@@ -494,7 +494,7 @@ bool QApplicationPrivate::fade_tooltip = false;
 bool QApplicationPrivate::animate_toolbox = false;
 bool QApplicationPrivate::widgetCount = false;
 bool QApplicationPrivate::load_testability = false;
-QString QApplicationPrivate::qmljsDebugArguments;
+QString QApplicationPrivate::qmljs_debug_arguments;
 #ifdef QT_KEYPAD_NAVIGATION
 #  ifdef Q_OS_SYMBIAN
 Qt::NavigationMode QApplicationPrivate::navigationMode = Qt::NavigationModeKeypadDirectional;
@@ -567,7 +567,7 @@ void QApplicationPrivate::process_cmdline()
         if (arg == "-qdevel" || arg == "-qdebug") {
             // obsolete argument
         } else if (arg.indexOf("-qmljsdebugger=", 0) != -1) {
-            qmljsDebugArguments = QString::fromLocal8Bit(arg.right(arg.length() - 15));
+            qmljs_debug_arguments = QString::fromLocal8Bit(arg.right(arg.length() - 15));
         } else if (arg.indexOf("-style=", 0) != -1) {
             s = QString::fromLocal8Bit(arg.right(arg.length() - 7).toLower());
         } else if (arg == "-style" && i < argc-1) {
@@ -6077,6 +6077,11 @@ QPixmap QApplicationPrivate::getPixmapCursor(Qt::CursorShape cshape)
     return QPixmap();
 }
 
+QString QApplicationPrivate::qmljsDebugArgumentsString()
+{
+    return qmljs_debug_arguments;
+}
+
 QT_END_NAMESPACE
 
 #include "moc_qapplication.cpp"
diff --git a/src/gui/kernel/qapplication_p.h b/src/gui/kernel/qapplication_p.h
index e0ef8b3d7a..b98f562c9a 100644
--- a/src/gui/kernel/qapplication_p.h
+++ b/src/gui/kernel/qapplication_p.h
@@ -446,7 +446,8 @@ public:
     static bool animate_toolbox;
     static bool widgetCount; // Coupled with -widgetcount switch
     static bool load_testability; // Coupled with -testability switch
-    static QString qmljsDebugArguments; // a string containing arguments for js/qml debugging.
+    static QString qmljs_debug_arguments; // a string containing arguments for js/qml debugging.
+    static QString qmljsDebugArgumentsString(); // access string from other libraries
 
 #ifdef Q_WS_MAC
     static bool native_modal_dialog_active;
diff --git a/src/s60installs/bwins/QtGuiu.def b/src/s60installs/bwins/QtGuiu.def
index aacc03a349..afc89ae6bc 100644
--- a/src/s60installs/bwins/QtGuiu.def
+++ b/src/s60installs/bwins/QtGuiu.def
@@ -12890,8 +12890,10 @@ EXPORTS
 	?lastRightBearing@QFontEngine@@IAE?AUQFixed@@ABUQGlyphLayout@@_N@Z @ 12889 NONAME ; struct QFixed QFontEngine::lastRightBearing(struct QGlyphLayout const &, bool)
 	?childrenBoundingRectHelper@QGraphicsItemPrivate@@QAEXPAVQTransform@@PAVQRectF@@PAVQGraphicsItem@@@Z @ 12890 NONAME ; void QGraphicsItemPrivate::childrenBoundingRectHelper(class QTransform *, class QRectF *, class QGraphicsItem *)
 	?setTimeout@QTapAndHoldGesture@@SAXH@Z @ 12891 NONAME ; void QTapAndHoldGesture::setTimeout(int)
-	?qmljsDebugArguments@QApplicationPrivate@@2VQString@@A @ 12892 NONAME ; class QString QApplicationPrivate::qmljsDebugArguments
+	?qmljsDebugArguments@QApplicationPrivate@@2VQString@@A @ 12892 NONAME ABSENT ; class QString QApplicationPrivate::qmljsDebugArguments
 	?effectiveBoundingRect@QGraphicsItemPrivate@@QBE?AVQRectF@@PAVQGraphicsItem@@@Z @ 12893 NONAME ; class QRectF QGraphicsItemPrivate::effectiveBoundingRect(class QGraphicsItem *) const
 	?maxTextureHeight@QTextureGlyphCache@@UBEHXZ @ 12894 NONAME ; int QTextureGlyphCache::maxTextureHeight(void) const
 	?maxTextureWidth@QTextureGlyphCache@@UBEHXZ @ 12895 NONAME ; int QTextureGlyphCache::maxTextureWidth(void) const
+	?qmljs_debug_arguments@QApplicationPrivate@@2VQString@@A @ 12896 NONAME ; class QString QApplicationPrivate::qmljs_debug_arguments
+	?qmljsDebugArgumentsString@QApplicationPrivate@@SA?AVQString@@XZ @ 12897 NONAME ; class QString QApplicationPrivate::qmljsDebugArgumentsString(void)
 
diff --git a/src/s60installs/eabi/QtGuiu.def b/src/s60installs/eabi/QtGuiu.def
index 4442d3385f..aa050f9936 100644
--- a/src/s60installs/eabi/QtGuiu.def
+++ b/src/s60installs/eabi/QtGuiu.def
@@ -12094,7 +12094,9 @@ EXPORTS
 	_ZN18QTapAndHoldGesture7timeoutEv @ 12093 NONAME
 	_ZN20QGraphicsItemPrivate26childrenBoundingRectHelperEP10QTransformP6QRectFb @ 12094 NONAME ABSENT
 	_ZN20QGraphicsItemPrivate14children_clearEP24QDeclarativeListPropertyI15QGraphicsObjectE @ 12095 NONAME
-	_ZN19QApplicationPrivate19qmljsDebugArgumentsE @ 12096 NONAME DATA 4
+	_ZN19QApplicationPrivate19qmljsDebugArgumentsE @ 12096 NONAME DATA 4 ABSENT
 	_ZN20QGraphicsItemPrivate26childrenBoundingRectHelperEP10QTransformP6QRectFP13QGraphicsItem @ 12097 NONAME
 	_ZNK20QGraphicsItemPrivate21effectiveBoundingRectEP13QGraphicsItem @ 12098 NONAME
+	_ZN19QApplicationPrivate21qmljs_debug_argumentsE @ 12099 NONAME DATA 4
+	_ZN19QApplicationPrivate25qmljsDebugArgumentsStringEv @ 12100 NONAME