I'm trying to get Qt 4.1.1. to work in coLinux/debian. I've compiled a static version of Qt and I can run non-graphical applications. However, as soon as I try to run something graphical such as designer or assistant I get segfaults. To debug, I started out with this minimal application:

Qt Code: 
  1. #include <QApplication>
  2. #include <QMessageBox>
  3.  
  4. int main( int argc, char **argv )
  5. {
  6. 	QApplication a( argc, argv );
  7.  
  8. 	QMessageBox::information( 0, "", "Now it works!" );
  9.  
  10. 	return 0;
  11. }
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The application builds and work with the message box line commented out, but when I try to run it in the shape that it is above, I get the follow backtrace from gdb:

Qt Code: 
  1. (gdb) run
  2. Starting program: /home/johan/coding/testall/testall
  3. [Thread debugging using libthread_db enabled]
  4. [New Thread -1220707488 (LWP 481)]
  5. Qt: gdb: -nograb added to command-line options.
  6.         Use the -dograb option to enforce grabbing.
  7.  
  8. Program received signal SIGSEGV, Segmentation fault.
  9. [Switching to Thread -1220707488 (LWP 481)]
  10. 0xb7be83c5 in QFontDatabase::loadXlfd (screen=0, script=0,
  11.    request=@0xbfffc890, force_encoding_id=-1) at qfontdatabase_x11.cpp:1678
  12. 1678    qfontdatabase_x11.cpp: No such file or directory.
  13.        in qfontdatabase_x11.cpp
  14. (gdb) bt
  15. #0  0xb7be83c5 in QFontDatabase::loadXlfd (screen=0, script=0,
  16.    request=@0xbfffc890, force_encoding_id=-1) at qfontdatabase_x11.cpp:1678
  17. #1  0xb7be884a in QFontDatabase::load (d=0x806f968, script=0)
  18.    at qfontdatabase_x11.cpp:1751
  19. #2  0xb7b71fae in QFontPrivate::engineForScript (this=0x806f968, script=0)
  20.    at qfont_p.h:155
  21. #3  0xb7be3787 in QFontMetricsF::leading (this=0xbffff370)
  22.    at text/qfontmetrics.cpp:1047
  23. #4  0xb7b6e8c6 in qt_format_text (fnt=@0xbffff420, _r=@0xbffff430,
  24.    tf=134236177, str=@0xbffff570, brect=0xbffff450, tabstops=0,
  25.    tabarraylen=0, painter=0x0) at painting/qpainter.cpp:5527
  26. #5  0xb7be2f57 in QFontMetrics::boundingRect (this=0xbffff550, r=@0xbffff4b0,
  27.    flgs=2048, str=@0xbffff570, tabstops=0, tabarray=0x0)
  28.    at text/qfontmetrics.cpp:688
  29. #6  0xb7be301b in QFontMetrics::size (this=0xbffff550, flgs=2048,
  30.    text=@0xbffff570, tabstops=0, tabarray=0x0) at text/qfontmetrics.cpp:720
  31. #7  0xb7d95494 in QPushButton::sizeHint (this=0x8077778)
  32.    at widgets/qpushbutton.cpp:379
  33. #8  0xb7e29e77 in QMessageBox::resizeEvent (this=0xbffff830)
  34.    at dialogs/qmessagebox.cpp:922
  35. #9  0xb7ab54d8 in QWidget::event (this=0xbffff830, event=0xbffff7a0)
  36.    at kernel/qwidget.cpp:5140
  37. #10 0xb7e299c2 in QMessageBox::setButtonText (this=0xbffff830, button=1,
  38. ---Type <return> to continue, or q <return> to quit---
  39.    text=@0xbffff820) at dialogs/qmessagebox.cpp:840
  40. #11 0xb7e2ac63 in textBox (parent=0x0, severity=Information,
  41.    caption=@0xbffff8f0, text=@0xbffff900, button0Text=@0xbffff910,
  42.    button1Text=@0xbffff920, button2Text=@0xbffff930, defaultButtonNumber=0,
  43.    escapeButtonNumber=-1) at dialogs/qmessagebox.cpp:1311
  44. #12 0xb7e2adbe in QMessageBox::information (parent=0x0, caption=@0xbffff8f0,
  45.    text=@0xbffff900, button0Text=@0xbffff910, button1Text=@0xbffff920,
  46.    button2Text=@0xbffff930, defaultButtonNumber=0, escapeButtonNumber=-1)
  47.    at dialogs/qmessagebox.cpp:1367
  48. #13 0x08048abf in main (argc=1, argv=0xbffff9e4) at main.cpp:8
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To me, it looks like it is desc.size->count that fails somehow:
Qt Code: 
  1. ...
  2.        QList<int> encodings;
  3.        if (desc.encoding)
  4.            encodings.append(int(desc.encoding->encoding));
  5.  
  6.        // append all other encodings for the matched font
  7.        for (int i = 0; i < desc.size->count; ++i) {
  8.            QtFontEncoding *e = desc.size->encodings + i;
  9.            if (e == desc.encoding)
  10.                continue;
  11.            encodings.append(int(e->encoding));
  12. ...
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