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

Dan Gudmundsson <>
Fri Jan 28 07:41:26 CET 2011


I upgraded to Ubuntu-10.10 yesterday on my personal linux, and didn't
have any problems.
But I have a 32bit system.

I will try to get hold of a Ubuntu 64 machine next week, but we run
Sles-10 on most
of our machines.

You can email me (privatly?) the backtrace of the R14B01 crash?

/Dan

On Fri, Jan 28, 2011 at 7:09 AM, Olivier Girondel
<> wrote:
> On Thu, Jan 27, 2011 at 10:28 PM, Boris Mühmer
> <> 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
>
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