Details
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Bug
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Resolution: Done
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P0: Blocker
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Qt Creator 2.4.0
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None
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Ubuntu 11.10 64 bit. Qtcreator based on 4.8.0-rc1 I'm seen a similar crash on window, and mac as well.
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2e724095c146b9f8bfe5f4594a6250b3cfb2bf11
Description
I currently have a project with c++ and qml. When I open qml file in the editor, qtcreator will crash. I think it do with importing my custom c++ module in qml? Anyways, the dynamic_cast in readModule() fails, returns null, and cause qtcreator to crash. I'm guessing member isn't a UiObjectDefinition, instead it appears to be a it's a UiScriptBinding. See below:
I hope this is fixed before 2.4 release, because this bug is current preventing me from using 2.4.
Backtrace
0 QmlJS::TypeDescriptionReader::readModule qmljstypedescriptionreader.cpp 148 0x7fffe1302b9f 1 QmlJS::TypeDescriptionReader::readDocument qmljstypedescriptionreader.cpp 140 0x7fffe13029b4 2 QmlJS::TypeDescriptionReader::operator() qmljstypedescriptionreader.cpp 79 0x7fffe130227a 3 QmlJS::CppQmlTypesLoader::parseQmlTypeDescriptions qmljsinterpreter.cpp 1244 0x7fffe12cc1dd 4 parseHelper qmljsplugindumper.cpp 267 0x7fffd9e3fdf4 5 QmlJSTools::Internal::PluginDumper::qmlPluginTypeDumpDone qmljsplugindumper.cpp 298 0x7fffd9e40095 6 QmlJSTools::Internal::PluginDumper::qt_static_metacall moc_qmljsplugindumper.cpp 71 0x7fffd9e58287 7 QMetaObject::activate(QObject*, QMetaObject const*, int, void**) /usr/local/Trolltech/Qt-4.8.0/lib/libQtCore.so.4 0 0x7ffff67f8ef1 8 QProcess::finished(int) /usr/local/Trolltech/Qt-4.8.0/lib/libQtCore.so.4 0 0x7ffff677aa01 9 ?? /usr/local/Trolltech/Qt-4.8.0/lib/libQtCore.so.4 0 0x7ffff67820b2 10 ?? /usr/local/Trolltech/Qt-4.8.0/lib/libQtCore.so.4 0 0x7ffff678214e 11 QMetaObject::activate(QObject*, QMetaObject const*, int, void**) /usr/local/Trolltech/Qt-4.8.0/lib/libQtCore.so.4 0 0x7ffff67f8ef1 12 QSocketNotifier::activated(int) /usr/local/Trolltech/Qt-4.8.0/lib/libQtCore.so.4 0 0x7ffff6845e3e 13 QSocketNotifier::event(QEvent*) /usr/local/Trolltech/Qt-4.8.0/lib/libQtCore.so.4 0 0x7ffff680225b 14 QApplicationPrivate::notify_helper(QObject*, QEvent*) /usr/local/Trolltech/Qt-4.8.0/lib/libQtGui.so.4 0 0x7ffff7095a74 15 QApplication::notify(QObject*, QEvent*) /usr/local/Trolltech/Qt-4.8.0/lib/libQtGui.so.4 0 0x7ffff709a8f3 16 QCoreApplication::notifyInternal(QObject*, QEvent*) /usr/local/Trolltech/Qt-4.8.0/lib/libQtCore.so.4 0 0x7ffff67e505c 17 ?? /usr/local/Trolltech/Qt-4.8.0/lib/libQtCore.so.4 0 0x7ffff68136d7 18 g_main_context_dispatch /lib/x86_64-linux-gnu/libglib-2.0.so.0 0 0x7ffff58cfa5d 19 ?? /lib/x86_64-linux-gnu/libglib-2.0.so.0 0 0x7ffff58d0258 20 g_main_context_iteration /lib/x86_64-linux-gnu/libglib-2.0.so.0 0 0x7ffff58d0429 21 QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) /usr/local/Trolltech/Qt-4.8.0/lib/libQtCore.so.4 0 0x7ffff68140e6 22 ?? /usr/local/Trolltech/Qt-4.8.0/lib/libQtGui.so.4 0 0x7ffff7138ffe 23 QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) /usr/local/Trolltech/Qt-4.8.0/lib/libQtCore.so.4 0 0x7ffff67e3e42 24 QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) /usr/local/Trolltech/Qt-4.8.0/lib/libQtCore.so.4 0 0x7ffff67e4097 25 QCoreApplication::exec() /usr/local/Trolltech/Qt-4.8.0/lib/libQtCore.so.4 0 0x7ffff67e8bf5 26 main main.cpp 398 0x40a5c3
Failing code - readModule
void TypeDescriptionReader::readModule(UiObjectDefinition *ast)
{
for (UiObjectMemberList *it = ast->initializer->members; it; it = it->next) {
UiObjectMember *member = it->member;
UiObjectDefinition *component = dynamic_cast<UiObjectDefinition *>(member);
const QString typeName = Bind::toString(component->qualifiedTypeNameId);
if (!component || (typeName != "Component" && typeName != "ModuleApi")) {
addWarning(member->firstSourceLocation(), "Expected only 'Component' and 'ModuleApi' object definitions");
continue;
}
if (typeName == QLatin1String("Component"))
readComponent(component);
}
}
Data in readModule during crash
ast @0x1bc36c8 QmlJS::AST::UiObjectDefinition
component 0x0 QmlJS::AST::UiObjectDefinition *
it @0x1bc3370 QmlJS::AST::UiObjectMemberList
member @0x1bc3340 QmlJS::AST::UiScriptBinding
QmlJS::AST::UiObjectMember QmlJS::AST::UiObjectMember
QmlJS::AST::Node QmlJS::AST::Node
colonToken QmlJS::AST::SourceLocation
qualifiedId @0x1bc32b0 QmlJS::AST::UiQualifiedId
statement @0x1bc3318 QmlJS::AST::ExpressionStatement
this @0x7fffffffd110 QmlJS::TypeDescriptionReader
typeName <not accessible> QString