Re: Program Crashes when Removing a Page

[dhk <dhkuhl optonline net>]

David NeÄas wrote:
> On Fri, Oct 30, 2009 at 06:09:16AM -0400, dhk wrote:
> > I have a notebook that crashes the program when
> > gtk_notebook_remove_page(GTK_NOTEBOOK(nb), page_num) is called.  Each
> > page of the notebook has a lot of stuff on it and the crash always
> > happens on the same page.  The source of gtk_notebook_remove_page()
> > looks like it recursively traverses the page and removes everything.  My
> > suspicion is that there is something on my page that causes the crash,
> > but I don't see what it could be.  The following error message is what I
> > get when gtk_notebook_remove_page() is called.
> > 1285   if(page_num>0) {
> > (gdb)
> > 1286     gtk_notebook_remove_page(GTK_NOTEBOOK(nb), page_num);
> > (gdb)
> >
> > Program received signal SIGSEGV, Segmentation fault.
> > 0x00007fffd8340790 in ?? ()
> >
> > How can I find out what's causing the crash?
>
> Run it under valgrind with G_SLICE=always-malloc
> http://library.gnome.org/devel/glib/stable/glib-running.html
> It will probably tell you that nb points to already-freed memory and
> where it was freed.  If it's so you need to figure out who does not own
> a reference while he should, see also
> http://library.gnome.org/devel/gobject/stable/tools-refdb.html
> that may help.  Or valgrind will tell you that nb is complete rubbish
> and why...
>
> Yeti

Valgrind, found the problem.  It was in a block of code the was not
finished and forgotten about a few weeks ago.  I commented it out and it
works as before.

Thanks,
dhk