Hello!
I am developing a Qt frontend for the Debian configuration system DebConf. It
uses (as you might have guessed) the PerlQt bindings. After the frontend
finishes, i get messages like this:
"DESTROY created new reference to dead object ' Qt::VBoxLayout', <GEN1> line 5
during global destruction."
"DESTROY created new reference to dead object ' Qt::CheckBox', <GEN1> line 7
during global destruction."
Et cetera (varies with different code-paths).
If it is relevant, i run these debian packages related to PerlQt:
ii libqt-perl 3.008-1 Perl bindings for the Qt library
ii libqt3c102-mt 3.2.1-6 Qt GUI Library (Threaded runtime version)
ii perl 5.8.2-2 Larry Wall's Practical Extraction and Report
ii perl-base 5.8.2-2 The Pathologically Eclectic Rubbish Lister.
ii perl-modules 5.8.2-2 Core Perl modules.
Trying to valgrind the whole beast, i got only the following error (probably
unrelated and maybe harmless). I was doing this as it was segfaulting at me
(at the point where the app should have been exiting). However, this
behaviour disappeared (mysteriously). The backtraces mentioned QCheckBox
destructor. This made me believe the DESTROY messages and the crashes were
related. So, the question remains, whether the warnings indicate some bug on
my part or a bug on your (PerlQt's) part or are utterly harmless.
Thank for your help and cheers.
---------- here is the backtrace from valgrind: -----
==13798== Syscall param write(buf) contains uninitialised or unaddressable
byte(s)
==13798== at 0x40359908: __libc_write (in /lib/libc-2.3.2.so)
==13798== by 0x4460484F: (within /usr/X11R6/lib/libICE.so.6.3)
==13798== by 0x446055FE: _IceTransWrite (in /usr/X11R6/lib/libICE.so.6.3)
==13798== by 0x445FC3DA: _IceWrite (in /usr/X11R6/lib/libICE.so.6.3)
==13798== by 0x445FBFF1: IceFlush (in /usr/X11R6/lib/libICE.so.6.3)
==13798== by 0x445CAD04: SmcSetProperties (in /usr/X11R6/lib/libSM.so.6.0)
==13798== by 0x43604C73: (within /usr/lib/libqt-mt.so.3.2.1)
==13798== by 0x43604D0B: (within /usr/lib/libqt-mt.so.3.2.1)
==13798== by 0x43605092: (within /usr/lib/libqt-mt.so.3.2.1)
==13798== by 0x43604E61: (within /usr/lib/libqt-mt.so.3.2.1)
==13798== by 0x445CC458: _SmcProcessMessage (in /usr/X11R6/lib/
libSM.so.6.0)
==13798== by 0x445FCB05: IceProcessMessages (in /usr/X11R6/lib/
libICE.so.6.3)
==13798== by 0x436059C5: QSmSocketReceiver::socketActivated(int) (in /usr/
lib/libqt-mt.so.3.2.1)
==13798== by 0x43605C71: QSmSocketReceiver::qt_invoke(int, QUObject*) (in /
usr/lib/libqt-mt.so.3.2.1)
==13798== by 0x436C48CB: QObject::activate_signal(QConnectionList*,
QUObject*) (in /usr/lib/libqt-mt.so.3.2.1)
==13798== by 0x436C4A2C: QObject::activate_signal(int, int) (in /usr/lib/
libqt-mt.so.3.2.1)
==13798== Address 0x43043748 is 12 bytes inside a block of size 1024
alloc'd
==13798== at 0x40015F65: calloc (vg_replace_malloc.c:284)
==13798== by 0x445F94DF: IceOpenConnection (in /usr/X11R6/lib/
libICE.so.6.3)
==13798== by 0x445CA408: SmcOpenConnection (in /usr/X11R6/lib/libSM.so.6.0)
==13798== by 0x43606190: QSessionManager::QSessionManager(QApplication*,
QString&, QString&) (in /usr/lib/libqt-mt.so.3.2.1)
==13798== by 0x43664B74: QApplication::initialize(int, char**) (in /usr/
lib/libqt-mt.so.3.2.1)
==13798== by 0x436643CD: QApplication::construct(int&, char**,
QApplication::Type) (in /usr/lib/libqt-mt.so.3.2.1)
==13798== by 0x43663FE8: QApplication::QApplication(int&, char**) (in /usr/
lib/libqt-mt.so.3.2.1)
==13798== by 0x449E4845: xcall_QApplication(short, void*,
Smoke::StackItem*) (in /usr/lib/libsmokeqt.so.1.2.1)
==13798== by 0x433A2F86: MethodCall::next() (in /usr/lib/perl5/auto/Qt/
Qt.so)
==13798== by 0x433A868E: (within /usr/lib/perl5/auto/Qt/Qt.so)
==13798== by 0x433A2EFA: MethodCall::next() (in /usr/lib/perl5/auto/Qt/
Qt.so)
==13798== by 0x433A803B: (within /usr/lib/perl5/auto/Qt/Qt.so)
==13798== by 0x4339299C: XS_AUTOLOAD(interpreter*, cv*) (in /usr/lib/perl5/
auto/Qt/Qt.so)
==13798== by 0x80CD985: Perl_pp_entersub (in /usr/bin/perl)
==13798== by 0x80C7368: Perl_runops_standard (in /usr/bin/perl)
==13798== by 0x8063477: (within /usr/bin/perl)
--
Peter Rockai (mornfall), mornfall()logisys!dyndns!org, mornfall.homeip.net
---------------------------------------------------------------------------
He says gods like to see an atheist around. Gives them something to aim at.
-- (Terry Pratchett, Small Gods)
|
