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List:       kde-core-devel
Subject:    reads/writes in deleted QWidget by KAction::unplug (??)
From:       Julian Seward <Julian_Seward () muraroa ! demon ! co ! uk>
Date:       2002-01-31 23:44:57
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Following Waldo's fix yesterday for reads/writes in deleted
KFileMetaInfoItem, I can now shut down kate cleanly, using File->Quit.
However, if I instead shut it down by clicking on the "X" in the
top-right hand corner of the window (the usual "make this window go
away button"), I consistently get the following 3 complaints 
(they occur in the order shown).

Knowing nothing about KDE internals (I am a compiler writer) I have no
idea if this is a Qt problem or a KDE problem.  Once again this is
with qt-copy, kdelibs and kdebase from CVS as of 20:00 GMT on 31 Jan
(thursday evening).

I hope someone can make sense of it from the trace below.
(31878 is the pid of the traced process; no other significance).

J



Kate (View): >>>> saveAllDocsAtCloseDown() DONE
kio (KDirLister): -KDirLister
kio (KDirLister): [void KDirLister::stop()] 
kio (KDirListerCache): [void KDirListerCache::stop(KDirLister *)] 0x4496c958
kio (KDirListerCache): [void KDirListerCache::forgetDirs(KDirLister *)] 0x4496c958
kio (KDirListerCache): removing from kdirwatch 0x4497204c /home/kdebuilder
kio (KDirWatch): Cancelled FAMReq 4
kio (KDirWatch): Removed Dir /home/kdebuilder [KDirWatch-1]
kio (KDirListerCache): [void KDirListerCache::forgetDirs(KDirLister *)] 0x4496c958 \
item moved into cache: file:/home/kdebuilder

==31878== Invalid write of size 4
==31878==    at 0x4159B5E7: QPopupMenu::menuDelPopup(QPopupMenu *)   
                               (widgets/qpopupmenu.cpp:382)
==31878==    by 0x41598F06: QMenuData::removeItemAt(int) (widgets/qmenudata.cpp:757)
==31878==    by 0x40F0E0EE: KAction::unplug(QWidget *) (kaction.cpp:569)
==31878==    by 0x40F10BA8: KAction::unplugAll() (kaction.cpp:945)
==31878==    Address 0x45A6278C is 156 bytes inside a block of size 208 free'd
==31878==    at 0x4004E2D7: __builtin_delete (ri_clientmalloc.c:620)
==31878==    by 0x414CE5F4: QObject::~QObject(..) (kernel/qobject.cpp:438)
==31878==    by 0x414F7B11: QWidget::~QWidget(..) (kernel/qwidget.cpp:854)
==31878==    by 0x4181CCCB: ??? (.moc/debug-mt/moc_qframe.cpp:29)



==31878== Invalid read of size 4
==31878==    at 0x414D0290: QObject::disconnect(const QObject *, const char *, 
                               const QObject *, const char *)
                               (kernel/qobject.cpp:1724)
==31878==    by 0x41819192: ??? (.moc/debug-mt/../../kernel/qobject.h:216)
==31878==    by 0x4159B60A: QPopupMenu::menuDelPopup(QPopupMenu *) 
                               (widgets/qpopupmenu.cpp:384)
==31878==    by 0x41598F06: QMenuData::removeItemAt(int) (widgets/qmenudata.cpp:757)
==31878==    Address 0x45A62700 is 16 bytes inside a block of size 208 free'd
==31878==    at 0x4004E2D7: __builtin_delete (ri_clientmalloc.c:620)
==31878==    by 0x414CE5F4: QObject::~QObject(..) (kernel/qobject.cpp:438)
==31878==    by 0x414F7B11: QWidget::~QWidget(..) (kernel/qwidget.cpp:854)
==31878==    by 0x4181CCCB: ??? (.moc/debug-mt/moc_qframe.cpp:29)



==31878== Invalid read of size 4
==31878==    at 0x414D0290: QObject::disconnect(const QObject *, const char *, 
                               const QObject *, const char *) \
(kernel/qobject.cpp:1724) ==31878==    by 0x41819192: ??? \
(.moc/debug-mt/../../kernel/qobject.h:216) ==31878==    by 0x4159B629: \
QPopupMenu::menuDelPopup(QPopupMenu *)   (widgets/qpopupmenu.cpp:386)
==31878==    by 0x41598F06: QMenuData::removeItemAt(int) (widgets/qmenudata.cpp:757)
==31878==    Address 0x45A62700 is 16 bytes inside a block of size 208 free'd
==31878==    at 0x4004E2D7: __builtin_delete (ri_clientmalloc.c:620)
==31878==    by 0x414CE5F4: QObject::~QObject(..) (kernel/qobject.cpp:438)
==31878==    by 0x414F7B11: QWidget::~QWidget(..) (kernel/qwidget.cpp:854)
==31878==    by 0x4181CCCB: ??? (.moc/debug-mt/moc_qframe.cpp:29)

kio (KDirListerCache): -KDirListerCache
kdecore (KLibLoader): The KLibLoader contains the library libkatepart (0x4473ff48)
kdecore (KLibLoader): Factory still has object 0x45bbaef8 unnamed Library = \
                libkatepart
kparts: Part::~Part 0x45bbaef8


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