[Uml-devel] [Bug 302384] New: umbrello hangs on import of qatomic_x86_64.h

Ralf Habacker ralf.habacker at gmail.com
Sat Jun 23 00:53:21 UTC 2012 

https://bugs.kde.org/show_bug.cgi?id=302384

            Bug ID: 302384
          Severity: major
           Version: unspecified
          Priority: NOR
          Assignee: umbrello-devel at kde.org
           Summary: umbrello hangs on import of qatomic_x86_64.h
    Classification: Unclassified
                OS: Linux
          Reporter: ralf.habacker at gmail.com
          Hardware: Other
            Status: NEW
         Component: general
           Product: umbrello

When importing /usr/include/QtCore/qatomic_x86_64.h from
libqt4-devel-4.7.1-8.17.1.x86_64 umbrello hangs 

Reproducible: Always

Steps to Reproduce:
1. start umbrello 
2. import qatomic_x86_64.h
3.
Actual Results:  
umbrello hangs

Expected Results:  
umbrello should finish the import

The call stack is: 

#0 PreprocessLexer::preprocess() at
/home/admin/src/kdesdk/umbrello/umbrello/codeimport/kdevcppparser/preprocesslexer.cpp:584
#1 Lexer::tokenize() at
/home/admin/src/kdesdk/umbrello/umbrello/codeimport/kdevcppparser/lexer.cpp:390
#2 Lexer::setSource() at
/home/admin/src/kdesdk/umbrello/umbrello/codeimport/kdevcppparser/lexer.cpp:321
#3 Driver::parseFile() at
/home/admin/src/kdesdk/umbrello/umbrello/codeimport/kdevcppparser/driver.cpp:237
#4 CppImport::parseFile() at
/home/admin/src/kdesdk/umbrello/umbrello/codeimport/cppimport.cpp:135
#5 ClassImport::importFile() at
/home/admin/src/kdesdk/umbrello/umbrello/codeimport/classimport.cpp:90
#6 CodeImpThread::run() at
/home/admin/src/kdesdk/umbrello/umbrello/codeimpwizard/codeimpthread.cpp:61
#7 CodeImpStatusPage::importCodeFile() at
/home/admin/src/kdesdk/umbrello/umbrello/codeimpwizard/codeimpstatuspage.cpp:163
#8 CodeImpStatusPage::importCode() at
/home/admin/src/kdesdk/umbrello/umbrello/codeimpwizard/codeimpstatuspage.cpp:136
#9 CodeImpStatusPage::qt_metacall() at
/home/admin/src/kdesdk/build/umbrello/umbrello/codeimpstatuspage.moc:86
#10 QMetaObject::activate(QObject*, QMetaObject const*, int, void**)() at
/usr/lib64/libQtCore.so.4:-1
#11 QAbstractButton::clicked(bool)() at /usr/lib64/libQtGui.so.4:-1
#12 ??() at /usr/lib64/libQtGui.so.4:-1
#13 ??() at /usr/lib64/libQtGui.so.4:-1
#14 QAbstractButton::mouseReleaseEvent(QMouseEvent*)() at
/usr/lib64/libQtGui.so.4:-1
#15 QWidget::event(QEvent*)() at /usr/lib64/libQtGui.so.4:-1
#16 QApplicationPrivate::notify_helper(QObject*, QEvent*)() at
/usr/lib64/libQtGui.so.4:-1
#17 QApplication::notify(QObject*, QEvent*)() at /usr/lib64/libQtGui.so.4:-1
#18 KApplication::notify(QObject*, QEvent*)() at /usr/lib64/libkdeui.so.5:-1
#19 QCoreApplication::notifyInternal(QObject*, QEvent*)() at
/usr/lib64/libQtCore.so.4:-1
#20 QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*,
QWidget*, QWidget**, QPointer<QWidget>&, bool)() at /usr/lib64/libQtGui.so.4:-1
#21 ??() at /usr/lib64/libQtGui.so.4:-1
#22 QApplication::x11ProcessEvent(_XEvent*)() at /usr/lib64/libQtGui.so.4:-1
#23 ??() at /usr/lib64/libQtGui.so.4:-1
#24 g_main_context_dispatch() at /lib64/libglib-2.0.so.0:-1
#25 ??() at /lib64/libglib-2.0.so.0:-1
#26 g_main_context_iteration() at /lib64/libglib-2.0.so.0:-1
#27
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)() at
/usr/lib64/libQtCore.so.4:-1
#28 ??() at /usr/lib64/libQtGui.so.4:-1
#29 QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)() at
/usr/lib64/libQtCore.so.4:-1
#30 QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)() at
/usr/lib64/libQtCore.so.4:-1
#31 QDialog::exec()() at /usr/lib64/libQtGui.so.4:-1
#32 UMLApp::slotImportingWizard() at
/home/admin/src/kdesdk/umbrello/umbrello/uml.cpp:2447
#33 UMLApp::qt_metacall() at
/home/admin/src/kdesdk/build/umbrello/umbrello/moc_uml.cpp:223
#34 QMetaObject::activate(QObject*, QMetaObject const*, int, void**)() at
/usr/lib64/libQtCore.so.4:-1
#35 QAction::triggered(bool)() at /usr/lib64/libQtGui.so.4:-1
#36 QAction::activate(QAction::ActionEvent)() at /usr/lib64/libQtGui.so.4:-1
#37 ??() at /usr/lib64/libQtGui.so.4:-1
#38 ??() at /usr/lib64/libQtGui.so.4:-1
#39 KMenu::mouseReleaseEvent(QMouseEvent*)() at /usr/lib64/libkdeui.so.5:-1
#40 QWidget::event(QEvent*)() at /usr/lib64/libQtGui.so.4:-1
#41 QMenu::event(QEvent*)() at /usr/lib64/libQtGui.so.4:-1
#42 QApplicationPrivate::notify_helper(QObject*, QEvent*)() at
/usr/lib64/libQtGui.so.4:-1
#43 QApplication::notify(QObject*, QEvent*)() at /usr/lib64/libQtGui.so.4:-1
#44 KApplication::notify(QObject*, QEvent*)() at /usr/lib64/libkdeui.so.5:-1
#45 QCoreApplication::notifyInternal(QObject*, QEvent*)() at
/usr/lib64/libQtCore.so.4:-1
#46 QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*,
QWidget*, QWidget**, QPointer<QWidget>&, bool)() at /usr/lib64/libQtGui.so.4:-1
#47 ??() at /usr/lib64/libQtGui.so.4:-1
#48 QApplication::x11ProcessEvent(_XEvent*)() at /usr/lib64/libQtGui.so.4:-1
#49 ??() at /usr/lib64/libQtGui.so.4:-1
#50 g_main_context_dispatch() at /lib64/libglib-2.0.so.0:-1
#51 ??() at /lib64/libglib-2.0.so.0:-1
#52 g_main_context_iteration() at /lib64/libglib-2.0.so.0:-1
#53
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)() at
/usr/lib64/libQtCore.so.4:-1
#54 ??() at /usr/lib64/libQtGui.so.4:-1
#55 QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)() at
/usr/lib64/libQtCore.so.4:-1
#56 QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)() at
/usr/lib64/libQtCore.so.4:-1
#57 QCoreApplication::exec()() at /usr/lib64/libQtCore.so.4:-1
#58 main() at /home/admin/src/kdesdk/umbrello/umbrello/main.cpp:110

at frame #0 the following for loop is located: 

582: void PreprocessLexer::preprocess()
583: {
584:    for (;;) {
        nextLine();
        if (m_source.currentChar().isNull())
            break;
    }

    Token tk = m_source.createToken(Token_eof, m_source.get_ptr());
    m_preprocessedString += tk.text();
}

Umbrello hangs in parsing line 116 of qatomic_x86_64.h:

113:inline bool QBasicAtomicInt::ref()
114:{
115:   unsigned char ret;
116:    asm volatile("lock\n"
117:           "incl %0\n"
118:           "setne %1"
119:           : "=m" (_q_value), "=qm" (ret)
120:           : "m" (_q_value)
121:           : "memory");
122:    return ret != 0;
123:}

at character 23 - the backslash 

116:    asm volatile("lock\n"

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