Re: [Caml-list] Potential OCaml-ZMQ memory management problems

[Kenneth Adam Miller <kennethadammiller@gmail.com>]

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Well I am just no thorough and you are correct.

The sending of data over a zmq socket and the conversion of that data from
string to protobuf encoded string all occurred in one line. One I added a
print statement and then segregated them more cleanly, I can see that it is
most certainly the line that converts to protobuf.

The exact function that fails (on my end, could be deeper within this) is
to_pb from here:

https://github.com/argp/bap/blob/master/ocaml/piqi/ast_piqi.ml#L186

In any case, I did a test, and in my first function when to_pb gets called
the first time and succeeds, I added an additional call to it... which also
succeeded. But then in a subsequent unit test, the one that has been
failing, still segfaults.

If I turn off the tests prior to the segfaulting test, to_pb works in this
particular run. But if the tests run before hand, something goes awry
between the tests. Is it possible that to_pb is using some shared state
between calls?


On Thu, Dec 4, 2014 at 2:36 PM, Anders Peter Fugmann <anders@fugmann.net>
wrote:

> Sending data over a zmq socket should not cause a segfault.
>
> I suggest that you open an issue on
> https://github.com/issuu/ocaml-zmq
> with exact details of the segfault and we can take a stab at it.
>
> /Anders
>
>
> On 04/12/14 17:45, Kenneth Adam Miller wrote:
>
>> Actually, I literally just found the location of the error... I'm trying
>> to send some data from ocaml that is causing ZMQ to segfault...
>>
>
>
>

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