Re^2: Segfault in Glib/Gtk2 script

Ouch! I'm really curious to know what your program does..

It's a telnet/MUD client. I'll be uploading the source code to CPAN as soon as this segfault is resolved.

in linux have you already tried to upgrade underlying libraries?

Yes, the problem on the Ubuntu forum you referenced does sound a lot like my issue. And replacing the 'exit' statement and using 'Gtk2->main_quit()' instead does indeed remove the segfault.

(I had tried using both ->main_quit and exit together, unsuccesfully; it hadn't occured to me to remove 'exit' and keep ->main_quit).

Comment on Re^2: Segfault in Glib/Gtk2 script

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Re^3: Segfault in Glib/Gtk2 script by zentara (Cardinal) on May 25, 2018 at 17:15 UTC
Hi, I'm a little rusty on the old Gtk stuff, but I just want to mention something that may help you further. You have to be careful with the return value of a delete_event, or any Gtk sub for that matter. Adding a 1 or 0 at the end of the sub can be needed sometimes. `#These are different in a very subtle manner. $window->signal_connect( 'destroy', sub { Gtk2->main_quit() } ); $window->signal_connect(delete_event => sub { Gtk2->main_quit(); 1;});` [download] See Gtk delete_event for more details. From a previous problem like yours on the gtk maillist: Returns: TRUE to stop other handlers from being invoked for the event. FALSE to propagate the event further." .... a return of TRUE from the delete-event handler means "i handled this event, stop propagation." I'm not really a human, but I play one on earth. ..... an animated JAPH	[reply] [d/l]

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Re^3: Segfault in Glib/Gtk2 script
by zentara (Cardinal) on May 25, 2018 at 17:15 UTC

You have to be careful with the return value of a delete_event, or any Gtk sub for that matter. Adding a 1 or 0 at the end of the sub can be needed sometimes.

#These are different in a very subtle manner.
$window->signal_connect( 'destroy', sub { Gtk2->main_quit() } );
$window->signal_connect(delete_event => sub { Gtk2->main_quit(); 1;});
[download]

See Gtk delete_event for more details.

From a previous problem like yours on the gtk maillist:

Returns: TRUE to stop other handlers from being invoked for the
event. FALSE to propagate the event further."

.... a return of TRUE from the delete-event
handler means "i handled this event, stop propagation."

I'm not really a human, but I play one on earth. ..... an animated JAPH

[reply]
[d/l]