[Gambas-user] Bug affecting to ShowModal

[Benoît Minisini]

> Because of messiness, that program could do anything weird
> (clarification is not ready yet).
> Problem occurs when program is closing.
> Here:
> 
> ==4946== Memcheck, a memory error detector
> ==4946== Copyright (C) 2002-2009, and GNU GPL'd, by Julian Seward et al.
> ==4946== Using Valgrind-3.6.0.SVN-Debian and LibVEX; rerun with -h for
> copyright info
> ==4946== Command: gbx3
> ==4946==
> ==4946== Conditional jump or move depends on uninitialised value(s)
> ==4946==    at 0x405178: my_free (gb_alloc_temp.h:324)
> ==4946==    by 0x42B6EE: EXTERN_exit (gbx_extern.c:438)
> ==4946==    by 0x4216AD: main_exit (gbx.c:135)
> ==4946==    by 0x421E0E: main (gbx.c:391)
> ==4946==  Uninitialised value was created by a heap allocation
> ==4946==    at 0x4C284A8: malloc (vg_replace_malloc.c:236)
> ==4946==    by 0x405295: my_malloc (gb_alloc_temp.h:308)
> ==4946==    by 0x42B25C: get_function (gbx_extern.c:184)
> ==4946==    by 0x42B7A3: EXTERN_call (gbx_extern.c:243)
> ==4946==    by 0x42FA1F: EXEC_loop (gbx_exec_loop.c:1056)
> ==4946==    by 0x409DB5: EXEC_function_loop (gbx_exec.c:858)
> ==4946==    by 0x40A808: EXEC_function_real (gbx_exec.c:845)
> ==4946==    by 0x41C20B: raise_event (gbx_api.c:483)
> ==4946==    by 0x41C9E6: GB_Raise (gbx_api.c:583)
> ==4946==    by 0x60C6024: CButton::clicked() (CButton.cpp:690)
> ==4946==    by 0x60C5D09: CButton::qt_metacall(QMetaObject::Call, int,
> void**) (CButton_moc.cpp:173)
> ==4946==    by 0x7E0CE3E: QMetaObject::activate(QObject*, QMetaObject
> const*, int, void**) (in /usr/lib/libQtCore.so.4.6.2)
> ==4946==    by 0x784E5F1: QAbstractButton::clicked(bool) (in
> /usr/lib/libQtGui.so.4.6.2)
> ==4946==    by 0x756886A: ??? (in /usr/lib/libQtGui.so.4.6.2)
> ==4946==    by 0x756970A: ??? (in /usr/lib/libQtGui.so.4.6.2)
> ==4946==    by 0x756997B:
> QAbstractButton::mouseReleaseEvent(QMouseEvent*) (in
> /usr/lib/libQtGui.so.4.6.2)
> ==4946==    by 0x7209581: QWidget::event(QEvent*) (in
> /usr/lib/libQtGui.so.4.6.2)
> ==4946==    by 0x71B322B: QApplicationPrivate::notify_helper(QObject*,
> QEvent*) (in /usr/lib/libQtGui.so.4.6.2)
> ==4946==    by 0x71B9ECA: QApplication::notify(QObject*, QEvent*) (in
> /usr/lib/libQtGui.so.4.6.2)
> ==4946==    by 0x7DFA06B: QCoreApplication::notifyInternal(QObject*,
> QEvent*) (in /usr/lib/libQtCore.so.4.6.2)
> ==4946==    by 0x71B90AD:
> QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*,
> QWidget*, QWidget**, QPointer<QWidget>&, bool) (in
> /usr/lib/libQtGui.so.4.6.2)
> ==4946==    by 0x7238F64: ??? (in /usr/lib/libQtGui.so.4.6.2)
> ==4946==    by 0x72378AB: QApplication::x11ProcessEvent(_XEvent*) (in
> /usr/lib/libQtGui.so.4.6.2)
> ==4946==    by 0x7264198: ??? (in /usr/lib/libQtGui.so.4.6.2)
> ==4946==    by 0x7DF8991:
> QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (in
> /usr/lib/libQtCore.so.4.6.2)
> ==4946==    by 0x7DF8D6B:
> QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (in
> /usr/lib/libQtCore.so.4.6.2)
> ==4946==    by 0x60C32DD: MyMainWindow::showModal() (CWindow.cpp:1790)
> ==4946==    by 0x60C3353: CWINDOW_show_modal(void*, void*)
> (CWindow.cpp:698) ==4946==    by 0x408C93: EXEC_native_quick
> (gbx_exec.c:1084)
> ==4946==    by 0x42F808: EXEC_loop (gbx_exec_loop.c:970)
> ==4946==    by 0x409DB5: EXEC_function_loop (gbx_exec.c:858)
> ==4946==    by 0x40A808: EXEC_function_real (gbx_exec.c:845)
> ==4946==    by 0x421D2D: main (gbx.c:359)
> ==4946==
> ==4946==
> ==4946== HEAP SUMMARY:
> ==4946==     in use at exit: 6,599,259 bytes in 36,597 blocks
> ==4946==   total heap usage: 317,322 allocs, 280,725 frees,
> 552,830,515 bytes allocated
> ==4946==
> ==4946== LEAK SUMMARY:
> ==4946==    definitely lost: 15,304 bytes in 28 blocks
> ==4946==    indirectly lost: 57,616 bytes in 1,797 blocks
> ==4946==      possibly lost: 5,124,760 bytes in 27,867 blocks
> ==4946==    still reachable: 1,371,899 bytes in 6,622 blocks
> ==4946==         suppressed: 29,680 bytes in 283 blocks
> ==4946== Rerun with --leak-check=full to see details of leaked memory
> ==4946==
> ==4946== For counts of detected and suppressed errors, rerun with: -v
> ==4946== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 20 from 8)
> 
> Jussi
> 

OK. The bug should be fixed in revision #3119.

Regards,

-- 
Benoît Minisini