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Date:      Sat, 19 Jun 2004 16:04:22 +0200
From:      Michael Nottebrock <michaelnottebrock@gmx.net>
To:        freebsd-threads@freebsd.org
Cc:        eti@erata.net
Subject:   Fwd: [kde-freebsd] Problem with qt on freebsd
Message-ID:  <200406191604.26550.michaelnottebrock@gmx.net>
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I and others have been able to reproduce the problem on -STABLE and 5.2.1-R=
,=20
but not on -CURRENT (my guess is it's probably reproducable on -CURRENT as=
=20
well if qt is linked against libc_r instead of libpthread).

Backtraces yield nothing despite full debugging enabled in QT and KDE (you =
can=20
enable debugging in the QT port by compiling with -DWANT_QT_DEBUG):
(gdb) run
Starting program: /usr/home/lofi/./qt-test

Program received signal SIGSEGV, Segmentation fault.
0x28de44f8 in __tcf_0 () at kstyle.cpp:295

Could this be some libc_r bug? It's a little heisenbug-ish, not all QT styl=
es=20
seem to trigger this reliably, perhaps it's even necessary to have some KDE=
=20
styles (i.e. kdelibs) installed, I couldn't check yet.

=2D-=20
   ,_,   | Michael Nottebrock               | lofi@freebsd.org
 (/^ ^\) | FreeBSD - The Power to Serve     | http://www.freebsd.org
   \u/   | K Desktop Environment on FreeBSD | http://freebsd.kde.org

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	with qt on freebsd
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	Sat, 19 Jun 2004 02:11:42 PDT
Date: Sat, 19 Jun 2004 02:11:42 -0700 (PDT)
From: etila rootila <etishor@yahoo.com>
To: kde@freebsd.org
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Subject: [kde-freebsd] Problem with qt on freebsd
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hi,

There seems to be a problem with QListView widgtet
when compiling & runing on freebsd. I found a report
of a similar problema on the mailing lists from
trolltech:
http://lists.trolltech.com/qt-interest/
2004-04/thread00962-0.html

The problema is that the application containing a
QListView witch has been populated with items
segfaults on exit. 

example:

#include <qapplication.h>
#include <qlistview.h>

int main( int argc, char ** argv )
{
QApplication a( argc, argv );
QListView w;
w.addColumn("column");
QListViewItem *item;
item=new QListViewItem(&w);
item->setText(0,"a");
item=new QListViewItem(item);
item->setText(0,"b");
a.setMainWidget(&w);
w.show();
return a.exec();
}

if you compile and run the application, and if you
close the main window without opening the first item
nothing happens. The problem is if you close the
application after opening the first item then it
segfaults. 

I'm using freebsd 4.10-stable with:

qt-3.3.2_2

bash-2.05b$ gcc -v
Using builtin specs.
gcc version 2.95.4 20020320 [FreeBSD]

ai've tryed compiling with gcc33 but the results are
the same.

bash-2.05b$ gcc33 -v
Reading specs from
/usr/local/lib/gcc-lib/i386-portbld-freebsd4.9/3.3.4/specs
Configured with: ./..//gcc-3.3-20040505/configure
--disable-nls --with-system-zlib --program-suffix=33
--with-gxx-include-dir=/usr/local/lib/gcc-lib/i386-portbld-freebsd4.9/3.3.4/include/c++/
--disable-shared --prefix=/usr/local
i386-portbld-freebsd4.9
Thread model: posix
gcc version 3.3.4 20040505 (prerelease) [FreeBSD]


The problem does not apear on linux or windows ... so
i guess it's freebsd specific. (i'm not 100% sure but
i think the problem exists on 5.X too)

Also i'm not sure if it's a qt problem or a libc
problem.


If you answer please cc to eti@erata.net (i can't
email from there cos the smtp servre does not have a
reverse and freebsd's MX does not accept mail from
there.


thanks.

Regards,
Iulian margarintescu





		
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