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Bug #41843 Set text on cloned GtkLabel gives segmentation fault
Submitted: 2007-06-28 16:56 UTC Modified: 2008-03-10 19:44 UTC
From: john dot navratil at sbcglobal dot net Assigned:
Status: Closed Package: PHP-GTK related
PHP Version: 5.2.3 OS: Fedora 7
Private report: No CVE-ID: None
View Developer Edit
 [2007-06-28 16:56 UTC] john dot navratil at sbcglobal dot net 
Description:
------------
There is an apparent failure in cloning a GtkLabel (and perhaps other objects).  I tried to clone an existing label in order to capture all its properties but got a segmentation fault when reseting the text.

Reproduce code:
---------------
<?php
if (!extension_loaded('php-gtk'))
        dl('php_gtk2.so');

echo "Start\n";
$lbl = new GtkLabel('nada');
echo "Label created\n";
$lbl->set_text('Text');
echo "Text set\n";
$lbl2 = clone $lbl;
echo "Label cloned\n";
$lbl2->set_text('New text'); // <-- Fails here
echo "Text reset\n";
?>


Expected result:
----------------
Start
Label created
Text set
Label cloned
Text reset


Actual result:
--------------
Start
Label created
Text set
Label cloned
Segmentation fault

Patches

Pull Requests

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 [2007-06-28 17:54 UTC] anant@php.net 
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to report
a bug at http://bugs.php.net/how-to-report.php

Cloning is not supported in PHP-GTK yet. We\'re hoping to resolve this 
soon.
 [2007-06-29 00:27 UTC] john dot navratil at sbcglobal dot net 
Fair enough!  I assumed as much and will look forward to object cloning in the future.

Meanwhile, we might wish to review the docs at "language.oop5.cloning.php" which refers to cloning GTK (not +) windows.  It might also be a reasonable idea to implement the clone methods to throw an Exception("Cloning not supported") in the meantime.  A segmentation fault is a bit of a foul, don't you think?

I know it's beta software and I'm sure there is plenty to do.  Many thanks for what has been provided to date.
 [2007-06-29 01:13 UTC] sfox@php.net 
John has a point. Putting it onto the docs folk. (Sorry docs folk.)
 [2007-08-16 13:19 UTC] vrana@php.net 
Please document this in PHP-GTK documentation.
 [2007-08-16 19:03 UTC] m dot quinton at gmail dot com 
clone operation is not supported by actual php-gtk.
 [2008-03-10 19:44 UTC] auroraeosrose@php.net 
This bug has been fixed in CVS.

Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.
 
Thank you for the report, and for helping us make PHP better.

an attempted clone operation will now produce a fatal error instead of segfaulting - don't clone gtk objects ;)
 
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