I just applied and pushed David's patch, the question remaining why it
showed up only in some environments and not others.
On 09/12/14 15:04, David B. Lamkins wrote:
I believe I've found the cause of this problem.
There's something special (I don't know what) about the exit behavior of
GTK+ in the case that there's something on the application's clipboard.
With nothing on the clipboard, application exit was fine. With something
on the clipboard, aplwrap's apl_exit() was called twice (?) which caused
a double-free of plot_pipe_name; that was almost certainly responsible
for the heap corruption I saw.
Also, it looked as if the GtkTextBuffer and associated objects got torn
down while APL was still alive; this was responsible for a lot of GTK+
assertion failures in my tests.
Both of these issues are fixed. I'll send Chris the patch.
On Fri, 2014-09-12 at 12:55 -0400, Chris Moller wrote:
Can you run it under valgrind? That should find memory problems.
On 09/12/14 12:51, David B. Lamkins wrote:
FWIW: commenting out the gtk_text_view_scroll_to_mark() call in
scroll_to_cursor() does not affect the crash that I'm seeing (which is
different in its details from the crash that Blake reported). I still
get a memory corruption report, though...
On Fri, 2014-09-12 at 09:46 -0700, David B. Lamkins wrote:
I reached similar conclusions. It seems that copy/paste tickles this
bug.
Copy, then paste, then evaluate, then click the close box: this is
enough to give me GTK+ errors and even stack dumps.
These are probably the important clues:
GLib-GObject-WARNING **: invalid unclassed pointer in cast to
'GtkTextView'
(aplwrap:29325): Gtk-CRITICAL **: gtk_text_view_scroll_to_mark:
assertion 'GTK_IS_TEXT_VIEW (text_view)' failed
gtk_text_view_scroll_to_mark() appears (in aplwrap code) only in
scroll_to_cursor(). Is the cast in that function incorrect?
On Fri, 2014-09-12 at 10:47 -0500, Blake McBride wrote:
Here are the steps that reproduce the problem:
1. Execute aplwrap
2. Type the following:
∇test
[1] abc
[2]
3. Highlight and COPY (^C) the 'abc'
4. Click on the end of the [2] line
5. PASTE (^V) the 'abc' (has no quotes)
6. Hit the backspace key 3 times
7. Hit the X in the upper corner to force aplwrap to exit. This
causes the error.
Does this give you errors too?
Thanks.
Blake
On Fri, Sep 12, 2014 at 9:05 AM, Chris Moller <mol...@mollerware.com>
wrote:
On 09/12/14 09:58, Blake McBride wrote:
> I am using vanilla LinuxMint 16. GTK comes with it.
> Upgrading to test is sort of a big job that messes up
> auto-update. Let me see if I can get an exact sequence to
> duplicate the problem instead. Is that okay?
Sure. And I might have a spare machine I can install 3.8.7 on
just to see what happens.
>
> On Fri, Sep 12, 2014 at 8:49 AM, Chris Moller
> <mol...@mollerware.com> wrote:
> Can you try putting in a newer version? 3.8.7 is
> from November of last year. They've done a lot of
> bug-fixing since then and it would be good to know
> if the bug is on my end or in GTK.
>
>
>
>
> On 09/12/14 09:40, Blake McBride wrote:
>
> > Looks like I am running 3.8.7
> >
> > On Fri, Sep 12, 2014 at 8:25 AM, Chris Moller
> > <mol...@mollerware.com> wrote:
> > What version of GTK are you using? I'm
> > running 3.10.9 though in configure.ac I'm
> > only checking for versions >= 3.0.12.
> > There may be some incompatibility.
> >
> >
> >
> > On 09/12/14 08:39, Blake McBride wrote:
> >
> > > Greetings,
> > >
> > >
> > > I was in the middle of editing a
> > > function using the regular del-editor, I
> > > copied and pasted a line, I then exited
> > > aplwrap by clicking on the x in the
> > > upper left hand corner of the screen
> > > without closing the function I was
> > > editing. Aplwrap gave me:
> > >
> > >
> > > (aplwrap:29325): Gtk-CRITICAL **:
> > > gtk_main_quit: assertion 'main_loops !=
> > > NULL' failed
> > >
> > >
> > > (aplwrap:29325): GLib-GObject-WARNING
> > > **: invalid unclassed pointer in cast to
> > > 'GtkTextView'
> > >
> > >
> > > (aplwrap:29325): Gtk-CRITICAL **:
> > > gtk_text_view_scroll_to_mark: assertion
> > > 'GTK_IS_TEXT_VIEW (text_view)' failed
> > > *** Error in `aplwrap': malloc():
> > > smallbin double linked list corrupted:
> > > 0x0000000001f88cc0 ***
> > >
> > >
> > >
> > >
> > > Thanks.
> > >
> > >
> > > Blake
> > >
> > >
> >
> >
> >
> >
>
>
>
>
