Re: [Bug-apl] Attention signal issues

[David B. Lamkins]

Thank you.

Confirmed not crashing in SVN 283. Tested in both Emacs and terminal,
both with and without readline.

Note that without readline, recognition of ^C is immediate.

On Mon, 2014-07-21 at 20:15 +0200, Juergen Sauermann wrote:
> Hi David,
> 
> good point, thanks. Maybe fixed in SVN 383.
> 
> /// Jürgen
> 
> 
> On 07/21/2014 07:40 PM, David B. Lamkins wrote:
> > Here's another data point:
> >
> > APL built without readline exhibits the same crash as APL run inside
> > Emacs.
> >
> > It seems that the absence of readline is the trigger for this crash.
> >
> >
> > On Mon, 2014-07-21 at 09:23 -0700, David B. Lamkins wrote:
> >> Thank you.
> >>
> >> I no longer see the APserver termination message upon an attention
> >> signal.
> >>
> >> However, the segfault and backtrace still happens when APL runs inside
> >> Emacs.
> >>
> >> Also, please note my other post regarding detection of the attention
> >> signal.
> >>
> >> On Mon, 2014-07-21 at 12:24 +0200, Juergen Sauermann wrote:
> >>> Hi David,
> >>>
> >>> thanks, should be fixed in SVN 381.
> >>>
> >>> /// Jürgen
> >>>
> >>>
> >>> On 07/20/2014 07:40 PM, David Lamkins wrote:
> >>>
> >>>> Jüergen and Elias, I think there might be something here for each of
> >>>> you.
> >>>>
> >>>>
> >>>> See comments in attached test case.
> >>>>
> >>>>
> >>>> There are two transcripts following:
> >>>>
> >>>>
> >>>>
> >>>> 1. From within gnu-apl-mode:
> >>>>
> >>>>        )load foo
> >>>> loading )DUMP file /home/dlamkins/APL/workspaces/foo.apl...
> >>>> WAS CLEAR WS
> >>>>        test
> >>>> test   C-c C-c
> >>>>
> >>>> =====
> >>>> APserver terminated by SIGINT===================================
> >>>> ============
> >>>> SEGMENTATION FAULT
> >>>>
> >>>> ----------------------------------------
> >>>> -- Stack trace at main.cc:133
> >>>> ----------------------------------------
> >>>> 0x7fa1346e2d65 __libc_start_main
> >>>> 0x43af15  main
> >>>> 0x53344d   Workspace::immediate_execution(bool)
> >>>> 0x473135    Command::process_line()
> >>>> 0x46d17a     Command::do_APL_expression(UCS_string&)
> >>>> 0x47c955      Executable::execute_body() const
> >>>> 0x4ed880       StateIndicator::run()
> >>>> 0x4a34f0        Prefix::reduce_statements()
> >>>> 0x4fe799         Symbol::resolve(Token&, bool)
> >>>> 0x5095fd          Quad_QUOTE::get_apl_value() const
> >>>> 0x487e4b           Input::get_quad_cr_line(UCS_string)
> >>>> 0x7fa13474761a            strlen
> >>>> 0x7fa1361a3750
> >>>> 0x48dada
> >>>> ========================================
> >>>> ====================================================
> >>>>
> >>>>
> >>>> Process apl exited abnormally with code 3
> >>>>
> >>>>
> >>>>
> >>>> 2. When run standalone in a terminal:
> >>>>
> >>>>        )load foo
> >>>> loading )DUMP file /home/dlamkins/APL/workspaces/foo.apl...
> >>>> WAS CLEAR WS
> >>>>        test
> >>>> test ^C
> >>>> APserver terminated by SIGINT
> >>>> ^C
> >>>> ATTENTION
> >>>> test[2]  →loop
> >>>>            ^
> >>>>
> >>>>
> >>>> -- 
> >>>> "The secret to creativity is knowing how to hide your sources."
> >>>>     Albert Einstein
> >>>>
> >>>>
> >>>> http://soundcloud.com/davidlamkins
> >>>> http://reverbnation.com/lamkins
> >>>> http://reverbnation.com/lcw
> >>>> http://lamkins-guitar.com/
> >>>> http://lamkins.net/
> >>>> http://successful-lisp.com/
> >
> >
>