[erlang-questions] What does this mean?

Rudolph van Graan <>
Mon Oct 23 16:16:41 CEST 2006


Hey,

The only code in the system that has a binary_to_term:

./mnesia/src/mnesia_lib.erl:    Core = binary_to_term(Bin),
./mnesia/src/mnesia_tm.erl:    Commit = binary_to_term(Bin),
./mnesia/src/mnesia_tm.erl:    do_abort(Tid, binary_to_term(Bin));
./mnesia/src/mnesia_tm.erl:    do_commit(Tid, binary_to_term(Bin));
./mnesia/src/mnesia_tm.erl:    do_commit(Tid, binary_to_term(Bin),  
DumperMode);
./mnesia/src/mnesia_tm.erl:         binary(Commit0) -> binary_to_term 
(Commit0);
./mnesia/src/mnesia_tm.erl:                 binary(Commit0) ->  
binary_to_term(Commit0);

That is why I wondered about mnesia and corrupt tables.

Rudolph van Graan

Software Architect
Pattern Matched Technologies

E-Mail:  
Tel:     086 1000 700 (SA Only)
Mobile:  +27 83 390 7767
Fax:     +27 12 665 9566
Web:     www.patternmatched.com


On Oct 23, 2006, at 4:06 PM, Valentin Micic wrote:

> Similar things were happening (more violently though -- core dump)  
> before, when attempting to use binary_to_term for selected binary  
> values.
> Could it be that you have a bunch of binary data that you're trying  
> to convert back to erlang terms?
>
> V.
>
> ----- Original Message ----- From: "Mikael Pettersson"  
> <>
> To: "Rudolph van Graan" <>
> Cc: "Erlang List" <>
> Sent: Monday, October 23, 2006 3:42 PM
> Subject: Re: [erlang-questions] What does this mean?
>
>
>> Rudolph van Graan writes:
>> > Hey again,
>> >
>> > Is it possible for a corrupt mnesia table to trigger this error?
>> >
>> > Rudolph van Graan
>> >
>> > Software Architect
>> > Pattern Matched Technologies
>> >
>> > E-Mail:  
>> > Tel:     086 1000 700 (SA Only)
>> > Mobile:  +27 83 390 7767
>> > Fax:     +27 12 665 9566
>> > Web:     www.patternmatched.com
>> >
>> >
>> > On Oct 23, 2006, at 2:24 PM, Mikael Pettersson wrote:
>> >
>> > > Rudolph van Graan writes:
>> > >> 1> TYPE ASSERTION FAILED, file beam/erl_term.c, line 105:
>> > >> tag_val_def: 0x18
>> > >
>> > > It means that you should immediately prepare a bug report
>> > > containing at least the version of OTP you're using, the
>> > > environment in which it is being run (OS version), the
>> > > tools used to compile it (compiler and version), and a
>> > > recipe for reproducing the error.
>> > >
>> > > This message is potentially serious and must be investigated.
>>
>> The message can be triggered by two different kinds of error:
>> 1. A logic error in the BEAM runtime system causing it to access
>>   data using type-incorrect accessors.
>> 2. Corrupt data that no longer matches the runtime system's
>>   expectations.
>>
>> I don't know enough about mnesia to comment on whether it
>> could be the culprit here.
>>
>> /Mikael
>> _______________________________________________
>> erlang-questions mailing list
>> 
>> http://www.erlang.org/mailman/listinfo/erlang-questions
>
>




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