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

Conflicts:
	doc/src/development/qmake-manual.qdoc
	mkspecs/symbian-gcce/qmake.conf
	qmake/project.cpp
	src/corelib/global/qnamespace.qdoc
	src/declarative/graphicsitems/qdeclarativetext.cpp
	src/gui/text/qtextdocumentlayout.cpp
	src/gui/text/qtextdocumentlayout_p.h
	tests/auto/declarative/qdeclarativetext/tst_qdeclarativetext.cpp
	tests/auto/networkselftest/networkselftest.pro
	tests/auto/qscriptengine/tst_qscriptengine.cpp
	tools/designer/src/components/signalsloteditor/signalslot_utils.cpp
	tools/designer/src/components/signalsloteditor/signalsloteditorwindow.cpp
	tools/qdoc3/test/qt-build-docs.qdocconf
	tools/qdoc3/test/qt-html-templates.qdocconf
	tools/qdoc3/test/qt-html-templates_zh_CN.qdocconf
	tools/qdoc3/test/qt.qdocconf
	tools/qdoc3/test/qt_ja_JP.qdocconf
	tools/qdoc3/test/qt_zh_CN.qdocconf

1 files changed, 8 insertions, 1 deletions

diff --git a/src/script/api/qscriptcontext.cpp b/src/script/api/qscriptcontext.cpp
index 59ea52d..2468a46 100644
--- a/src/script/api/qscriptcontext.cpp
+++ b/src/script/api/qscriptcontext.cpp
@@ -299,6 +299,12 @@ QScriptValue QScriptContext::argumentsObject() const
 
     //for a js function
     if (frame->codeBlock() && frame->callee()) {
+        if (!QScriptEnginePrivate::hasValidCodeBlockRegister(frame)) {
+            // We have a built-in JS host call.
+            // codeBlock is needed by retrieveArguments(), but since it
+            // contains junk, we would crash. Return an invalid value for now.
+            return QScriptValue();
+        }
         JSC::JSValue result = frame->interpreter()->retrieveArguments(frame, JSC::asFunction(frame->callee()));
         return QScript::scriptEngineFromExec(frame)->scriptValueFromJSCValue(result);
     }
@@ -309,7 +315,8 @@ QScriptValue QScriptContext::argumentsObject() const
     }
 
     //for a native function
-    if (!frame->optionalCalleeArguments()) {
+    if (!frame->optionalCalleeArguments()
+        && QScriptEnginePrivate::hasValidCodeBlockRegister(frame)) { // Make sure we don't go here for host JSFunctions
         Q_ASSERT(frame->argumentCount() > 0); //we need at least 'this' otherwise we'll crash later
         JSC::Arguments* arguments = new (&frame->globalData())JSC::Arguments(frame, JSC::Arguments::NoParameters);
         frame->setCalleeArguments(arguments);