Merge remote branch 'origin/4.7' into qt-master-from-4.7

Conflicts:
	configure
	doc/src/snippets/code/doc_src_qmake-manual.qdoc
	mkspecs/features/symbian/application_icon.prf
	mkspecs/features/symbian/default_post.prf
	mkspecs/features/symbian/symbian_building.prf
	qmake/generators/symbian/initprojectdeploy_symbian.cpp
	src/multimedia/audio/audio.pri
	src/network/access/qnetworkaccessmanager.cpp
	src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp
	src/opengl/qgl_p.h
	src/plugins/bearer/corewlan/qcorewlanengine.mm
	src/plugins/phonon/mmf/mmf.pro
	tests/auto/qscriptvalue/tst_qscriptvalue.cpp
	tests/auto/qscriptvalue/tst_qscriptvalue.h
	tools/qdoc3/doc/qdoc-manual.qdocconf

1 files changed, 12 insertions, 0 deletions

diff --git a/src/script/bridge/qscriptclassobject.cpp b/src/script/bridge/qscriptclassobject.cpp
index 28f7bd1..51c0976 100644
--- a/src/script/bridge/qscriptclassobject.cpp
+++ b/src/script/bridge/qscriptclassobject.cpp
@@ -78,6 +78,12 @@ bool ClassObjectDelegate::getOwnPropertySlot(QScriptObject* object,
         scriptObject, scriptName, QScriptClass::HandlesReadAccess, &id);
     if (flags & QScriptClass::HandlesReadAccess) {
         QScriptValue value = m_scriptClass->property(scriptObject, scriptName, id);
+        if (!value.isValid()) {
+            // The class claims to have the property, but returned an invalid
+            // value. Silently convert to undefined to avoid the invalid value
+            // "escaping" into JS.
+            value = QScriptValue(QScriptValue::UndefinedValue);
+        }
         slot.setValue(engine->scriptValueToJSCValue(value));
         return true;
     }
@@ -119,6 +125,12 @@ bool ClassObjectDelegate::getOwnPropertyDescriptor(QScriptObject *object,
         attribs |= pflags & QScriptValue::UserRange;
         // Rather than calling the getter, we could return an access descriptor here.
         QScriptValue value = m_scriptClass->property(scriptObject, scriptName, id);
+        if (!value.isValid()) {
+            // The class claims to have the property, but returned an invalid
+            // value. Silently convert to undefined to avoid the invalid value
+            // "escaping" into JS.
+            value = QScriptValue(QScriptValue::UndefinedValue);
+        }
         descriptor.setDescriptor(engine->scriptValueToJSCValue(value), attribs);
         return true;
     }