Bug#476217: Bug#485597: psi vs Qt4.4.0-3 segmentation fault

[Jan Niehusmann <jan@gondor.com>]

This definitely looks like a qt bug: I just wrote a relatively simple
test program to reproduce it without using psi.

The attached files contain a simple application, which just opens a
window containing a single QTextEditor, and, from a timer, continously
adds '.' characters with the QTextCharFormat::SpellCheckUnderline style.

On my computer, it reproducibly crashes within less than a second.

I hope this helps debugging.

Jan

#include <QApplication>
#include <QLabel>
#include <QTextCharFormat>
#include <QTextDocument>
#include <QTextEdit>
#include <QTextCursor>
#include <QColor>
#include <QTimer>

#include "main.h"

App::App(int argc, char *argv[]) : QApplication(argc,argv) {
    tcf = new QTextCharFormat();
    tcf->setUnderlineColor(QColor(255,0,0));
    tcf->setUnderlineStyle(QTextCharFormat::SpellCheckUnderline);

    QTextDocument *document = new QTextDocument();

    QTextEdit *hello = new QTextEdit();

    hello->setDocument(document);
    hello->resize(100, 30);

    hello->show();

    cursor = new QTextCursor(document);

    QTimer *timer = new QTimer(this);
    connect(timer, SIGNAL(timeout()), this, SLOT(update()));
    timer->start(10);
}

void App::update() {
    cursor->insertText(".",*tcf);
}
	
int main(int argc, char *argv[])
{
    App app(argc, argv);

    return app.exec();
}

######################################################################
# Automatically generated by qmake (2.01a) Mon Jul 7 00:18:03 2008
######################################################################

TEMPLATE = app
TARGET = 
DEPENDPATH += .
INCLUDEPATH += .

# Input
SOURCES += main.cpp
HEADERS += main.h
CONFIG += qt debug

#include <QApplication>
#include <QLabel>
#include <QTextCharFormat>
#include <QTextDocument>
#include <QTextEdit>
#include <QTextCursor>
#include <QColor>
#include <QTimer>


class App : public QApplication
{
	Q_OBJECT
public:
	App(int argc, char *argv[]);
public slots:
	void update();
private:
    QTextCharFormat *tcf;
    QTextCursor *cursor;
};