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<  Erlang bugs mailing list  ~  erl crash on call to http_base_64
datacompboy
Posted: Fri Oct 06, 2006 10:14 pm Reply with quote
User Joined: 21 Sep 2006 Posts: 69 Location: Novosibirsk, Russia
On
Code:
http_base_64:decode("dGVzda==\a").

erl dies with "Instruction at ... referenced memory at .... The memory could not be written"

_________________
--- suicide proc near\n call death\n suicide endp
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datacompboy
Posted: Sun Oct 08, 2006 7:36 am Reply with quote
User Joined: 21 Sep 2006 Posts: 69 Location: Novosibirsk, Russia
datacompboy wrote:
http_base_64:decode("dGVzda==\a").


Intresting info: if start debugger and parse module http_base_64 from inets, we got
=ERROR REPORT==== 8-Oct-2006::14:15:27 ===
Error in process <0.129.0> with exit value: {badarith,[{http_base_64,decode_base64_list,[{[29,26,pad,pad],"\n"},"set"]}]}

** exited: {badarith,[{http_base_64,decode_base64_list,[{[29,26,pad,pad],"\n"},"set"]}]} **

so, looks like that are core bug in runtime system!

... but for http_base_64 fix are simple:
change
Code:
decode_base64_list({[Sixtet1,Sixtet2,pad,pad], []}, Acc) ->

to
Code:
decode_base64_list({[Sixtet1,Sixtet2,pad,pad], _}, Acc) ->


and
Code:
decode_base64_list({[Sixtet1,Sixtet2,Sixtet3,pad], []}, Acc) ->

to
Code:
decode_base64_list({[Sixtet1,Sixtet2,Sixtet3,pad], _}, Acc) ->

_________________
--- suicide proc near\n call death\n suicide endp
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Guest
Posted: Thu Oct 12, 2006 3:44 pm Reply with quote
Guest
Small example of segmentation-failing code:

test() ->
[A,B,C] = [1,a,b],
(A bsl 2) bor (B bsl 3) bor C.


datacompboy wrote:
>
> datacompboy wrote:
> http_base_64:decode("dGVzda==a").
> (end of quote)
>
>
> Intresting info: if start debugger and parse module http_base_64 from inets, we got
> =ERROR REPORT==== 8-Oct-2006::14:15:27 ===
> Error in process <0.129.0> with exit value: {badarith,[{http_base_64,decode_base64_list,[{[29,26,pad,pad],"n"},"set"]}]}
>
> ** exited: {badarith,[{http_base_64,decode_base64_list,[{[29,26,pad,pad],"n"},"set"]}]} **
>
> so, looks like that are core bug in runtime system!
>
> ... but for http_base_64 fix are simple:
> change
> decode_base64_list({[Sixtet1,Sixtet2,pad,pad], []}, Acc) ->
> to
> decode_base64_list({[Sixtet1,Sixtet2,pad,pad], _}, Acc) ->
>
> and
> decode_base64_list({[Sixtet1,Sixtet2,Sixtet3,pad], []}, Acc) ->
> to
> decode_base64_list({[Sixtet1,Sixtet2,Sixtet3,pad], _}, Acc) ->
> --
> --- suicide proc near\n call death\n suicide endp
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> Post sent from http://www.trapexit.org
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wailian
Posted: Tue Mar 20, 2012 2:13 am Reply with quote
Guest
i/p transducer requires a standard input and is for use with linear pneumatic actuators and has high air capacity. It can be easy change of the output signal from. electro pneumatic transducer is used, for example, in the biomedical field for the pneumatic control of a cardiac module, or artificial heart.
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