Re: [Bug-apl] Attempting to )load a )dump file causes segfault

[Juergen Sauermann]

Hi David,

I tried to reproduce the problem on my machine but couldn't.
I looped around an empty file (outside emacs mode) several 10000 times 
without
the problem happening.

Some more context like the Backtrace shown after SEGMENTATION FAULT (if any)
or loading the core dump into gdb and doing 'bt" would help.

/// Jürgen


On 04/20/2014 11:25 PM, David B. Lamkins wrote:
> Sigh: Or maybe not... The crash happens less often from the command
> line, but it can still happen.
>
> Uninitialized pointer...?
>
> OK... I'm gonna stop reporting these crashes. Let me know if there's
> anything I can do to help isolate the cause.
>
> On Sun, 2014-04-20 at 14:20 -0700, David B. Lamkins wrote:
> > Apologies: This problem only appears within an Emacs session using
> > gnu-apl-mode. It's not an APL bug; the problem does not manifest when
> > apl is run from the command-line.
> >
> > Let me try to resynchronize gnu-apl and gnu-apl-mode; if there's still a
> > problem I'll report back.
> >
> > On Sun, 2014-04-20 at 14:09 -0700, David B. Lamkins wrote:
> > > Here's another )load crash, this time with dump files. I'm running svn
> > > 218, clean build with a default ./configure.
> > >
> > > This crash is trivial to reproduce. Create a dump file with only the
> > > header line, i.e.:
> > >
> > > -- begin test.apl --
> > > #!/usr/local/bin/apl --script --
> > > --  end  test.apl --
> > >
> > > ... then:
> > >        )load test.apl
> > > loading )DUMP file /home/dlamkins/workspaces/test.apl...
> > >
> > >
> > > ====================================================
> > > SEGMENTATION FAULT
> > >
> > > Process apl segmentation fault (core dumped)
> > >
> > > The problem seems to occur at the end of the file; any APL expressions
> > > after the header seem to be executed correctly.