Bug in Qt or Qt Designer or my mistake?

[[maTa]]

Try:

void Form2::dodaj()
{
    Form3 *forma3 = new Form3( 0, 0, Qt::WDestructiveClose );
    // ...
}

void Form2::dodaj()
{
    Form3 *forma3 = new Form3( 0, 0, Qt::WDestructiveClose );
    // ...
}

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i got:

Program received signal SIGSEGV, Segmentation fault.
0x02593023 in QGListIterator:perator++ () from /usr/lib/qt-3.3/lib/libqt-mt.so.3
(gdb)
Single stepping until exit from function _ZN14QGListIteratorppEv,
which has no line number information.
Couldn't get registers: No such process.
(gdb)
Single stepping until exit from function _ZN14QGListIteratorppEv,
which has no line number information.
Cannot fetch general-purpose registers for thread -1208314176: generic error
(gdb) backtrace
#0 0x02593023 in QGListIterator:perator++ () from /usr/lib/qt-3.3/lib/libqt-mt.so.3
Error accessing memory address 0xbf8d2868: No such process.
(gdb)


hmm...
btw. posted from diff. comp

[jacek]

i got:

Program received signal SIGSEGV, Segmentation fault.
0x02593023 in QGListIterator:perator++ () from /usr/lib/qt-3.3/lib/libqt-mt.so.3
(gdb)
Single stepping until exit from function _ZN14QGListIteratorppEv,
which has no line number information.
Couldn't get registers: No such process.

Then try (make sure you have "debug" instead of "release" in CONFIG in your .pro file):

(gdb) run
...
Program received signal SIGSEGV, Segmentation fault.
...
(gdb) bt
<post this part>
(gdb) quit

(gdb) run
...
Program received signal SIGSEGV, Segmentation fault.
...
(gdb) bt
<post this part>
(gdb) quit

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[[maTa]]

here you go:


Program received signal SIGSEGV, Segmentation fault.
0x02593023 in QGListIterator:perator++ ()
from /usr/lib/qt-3.3/lib/libqt-mt.so.3
(gdb) bt
#0 0x02593023 in QGListIterator:perator++ ()
from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#1 0x02243761 in QApplication::sendPostedEvents ()
from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#2 0x022e418f in QWidget::show () from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#3 0x02446556 in QDialog::show () from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#4 0x0805b651 in Form2::qt_invoke (this=0x9207000, _id=47, _o=0xbffa5aa8)
at .moc/moc_form2.cpp:102
#5 0x022a6d17 in QObject::activate_signal ()
from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#6 0x022a7274 in QObject::activate_signal ()
from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#7 0x0262312e in QButton::clicked () from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#8 0x02346a03 in QButton::mouseReleaseEvent ()
from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#9 0x022e5127 in QWidget::event () from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#10 0x0224208d in QApplication::internalNotify ()
from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#11 0x02242fef in QApplication::notify ()
from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#12 0x021d9706 in QETWidget::translateMouseEvent ()
from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#13 0x021d7eb3 in QApplication::x11ProcessEvent ()
---Type <return> to continue, or q <return> to quit---
from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#14 0x021ebfc8 in QEventLoop:rocessEvents ()
from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#15 0x0225a74b in QEventLoop::enterLoop ()
from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#16 0x0225a656 in QEventLoop::exec () from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#17 0x02241a59 in QApplication::exec () from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#18 0x080507cb in main (argc=1, argv=0x79) at .ui/../form1.ui.h:41
(gdb)

[jacek]

#2 0x022e418f in QWidget::show () from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#3 0x02446556 in QDialog::show () from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#4 0x0805b651 in Form2::qt_invoke (this=0x9207000, _id=47, _o=0xbffa5aa8)
at .moc/moc_form2.cpp:102

It looks like it crashes when you try to show Form3 in Form2::dodaj(). I just wonder why it doesn't crash on my system (I use Qt 3.3.5).

Did you try to run "make clean && qmake && make"? Does it still crash?

Does it crash with this code?

void Form2::dodaj()
{
}

void Form2::dodaj()
{
}

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