Works for me now without errors.  Thanks to all!!

On Fri, Sep 12, 2014 at 2:30 PM, Chris Moller <mol...@mollerware.com> wrote:

>  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> 
> <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> <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> <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
>         >         >         >
>         >         >         >
>         >         >
>         >         >
>         >         >
>         >         >
>         >
>         >
>         >
>         >
>
>
>
>
>
>
>
>
>
>

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