[erlang-questions] Erlang and wxWidgets: how to help to improve the stability of wx (on Ubuntu)?!?!

[Olivier Girondel]

On Thu, Jan 27, 2011 at 10:28 PM, Boris Mühmer
<boris.muehmer@REDACTED> wrote:
> After some time of other work I wanted to do some tests with Erlang
> and wxWidgets again on my linux box at home, but my system failed on
> "wx:demo()" with a core dump.
>
> === output: begin ===
>
> $ /opt/erlang-otp/bin/erl
> Erlang R14B01 (erts-5.8.2) [source] [64-bit] [smp:2:2] [rq:2]
> [async-threads:0] [hipe] [kernel-poll:false]
>
> Eshell V5.8.2  (abort with ^G)
> 1> wx:demo().
> beam.smp: malloc.c:3096: sYSMALLOc: Assertion `(old_top == (((mbinptr)
> (((char *) &((av)->bins[((1) - 1) * 2])) - __builtin_offsetof (struct
> malloc_chunk, fd)))) && old_size == 0) || ((unsigned long) (old_size)
>>= (unsigned long)((((__builtin_offsetof (struct malloc_chunk,
> fd_nextsize))+((2 * (sizeof(size_t))) - 1)) & ~((2 * (sizeof(size_t)))
> - 1))) && ((old_top)->size & 0x1) && ((unsigned long)old_end &
> pagemask) == 0)' failed.
>
>             Aborted
> === output: end ===
>
> This sort of behaviour (with erl core dumping) was already discussed
> two or three months ago ("Debugger fault at startup." and "wx and the
> problem that won't go away." by Michael Richter, end of September
> 2010).
>
> I had a brief look with gdb at the core dump, but it didn't give me a
> clue what went wrong. I even recompiled my erlang installation from
> the official tarball (R14B01) and the git repository, but all my
> builds core dumped on my home system.
>
> When I tried this at work, I could not reproduce this error.
>
> The main difference between those systems is the Ubuntu version installed:
> - home: 10.10
> - work: 10.04
>
> But I believe "wx:demo/()" worked with Ubuntu 10.10 last year, but I
> am not 100% sure, because reading "Erlang and OTP in Action" (for the
> last weeks) didn't involve any UI/wx programming.
>
> So what can I (or we) do to improve the stability of the wx
> environment? Is this just a problem with Ubuntu or do other (Linux,
> *BSD, Windows, etc.) systems/environments have the same or similar
> problem(s)? Is anyone interested in the core dump?
>
>   - boris

Hi,

I had the same problem on various platforms, this one is on
Debian/squeeze, R13B04

So it might not be related to Ubuntu but rather to wx ?
=> ii  libwxgtk2.8-dev                      2.8.10.1-3+b1

=============================================================================
$ erl
Erlang R13B04 (erts-5.7.5) [source] [64-bit] [smp:2:2] [rq:2]
[async-threads:0] [hipe] [kernel-poll:false]

Eshell V5.7.5  (abort with ^G)
1> wx:demo().
beam.smp: malloc.c:3097: sYSMALLOc: Assertion `(old_top == (((mbinptr)
(((char *) &((av)->bins[((1) - 1) * 2])) - __builtin_offsetof (struct
malloc_chunk, fd)))) && old_size == 0) || ((unsigned long) (old_size)
>= (unsigned long)((((__builtin_offsetof (struct malloc_chunk,
fd_nextsize))+((2 * (sizeof(size_t))) - 1)) & ~((2 * (sizeof(size_t)))
- 1))) && ((old_top)->size & 0x1) && ((unsigned long)old_end &
pagemask) == 0)' failed.
                                Aborted
=============================================================================

-- 
Olivier