[Kde-perl] reproducible core dump in Qt::Table
Germain Garand
germain at ebooksfrance.org
Thu Mar 25 23:49:15 CET 2004
Le Mardi 23 Mars 2004 02:02, Marc Horowitz a écrit :
> System: Debian/x86
>
> Package versions:
>
> ii libperl5.8 5.8.3-2 Shared Perl library.
> ii libqt-perl 3.008-1 Perl bindings for the Qt library
>
> The simplest way to reproduce this is to use pqtsh. When I run the
> following commands:
>
> use Qt::attributes qw(table);
> table = Qt::Table();
> table->show;
> table->setNumRows(1);
> table->setNumCols(1);
> table->setText(0,0,"hello");
> table->removeRow(0);
>
> the final command causes a segmentation fault. valgrind strongly
> indicates that this is a double-free bug (logs appended).
> Interestingly, if I keep running (which is possible only under
> valgrind), I don't see the problem again.
OK, I can reproduce with CVS as well. No wonder.
Could you please file a report on sourceforge with the same content?
>
> Is there any other way for me to remove rows from a table using
> PerlQt?
yes but it's more convoluted.
You need to table->takeItem( table->item(x,y) )
Obviouly, the garbage collection model for *Items is unsatisfying. Qt isn't
sound enough in that respect to come up with something reliable.
That needs to be worked out,
but I'm concerned about backward compatibility ;-/
G.
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