Re: [Caml-list] Cannot execute "main" function

[Ivan Gotovchits <ivg@ieee.org>]

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Can you show the output of `ldd` on your main executable, e.g.,  `ldd
init.native`?

On Fri, Jul 17, 2015 at 3:07 PM, Shuai Wang <wangshuai901@gmail.com> wrote:

> Hello Ivan,
>
> Thank you for your reply! aha, it is not related to BAP ;)
>
> I didn't touch the code in init.ml for a long time, and I have tried to
> roll back
> to previous version which works fine. But it is still trapped in this way..
>
> By looking at the ltrace output, IMHO, is there any chance that some
> setting up code of runtime system does not work well? I am probably wrong.
>
> Sincerely,
> Shuai
>
>
>
>
>
>
> On Fri, Jul 17, 2015 at 2:51 PM, Ivan Gotovchits <ivg@ieee.org> wrote:
>
>> In OCaml all module level expressions are evaluated in order of their
>> appearance. If you have some function
>> that you designate as a "main" function*, then before this function is
>> entered all modules on which module,
>> containing "main" function, depends. So you need to find, whether you
>> added some code, that evaluates before
>> your main.
>>
>> * there is no such function as main function in OCaml. All modules are
>> evaluated in the order of their occurrence
>> on the compilation string. Usually, the order is defined by a build tool,
>> like `ocamlbuild`, that will put the entry module
>> in the last place, and topologically sort the preceding modules.
>>
>> P.S. I hope that this is not related to BAP? ;)
>>
>> On Fri, Jul 17, 2015 at 2:35 PM, Shuai Wang <wangshuai901@gmail.com>
>> wrote:
>>
>>> Dear list,
>>>
>>>
>>> I am working on some tools written in OCaml (compiled by OCaml version
>>> 4.01.0).
>>>
>>> This morning I changed some code, compiled it and let it processing some
>>> large data (~ 4G), it never stops after over 2 hours.
>>>
>>> I feed the tool with a tiny input which took less than 1 second to
>>> process before, and  I figured out that now it takes around 2.5 minutes
>>> before entering into "main" function!
>>>
>>> I tried to clean the whole codebase, and recompile it ( I use ocamlbuild
>>> 4.01.0), but the same wired situation still happens..
>>>
>>> I did this:
>>>
>>>     ltrace ./init.native input
>>>
>>> and I got this output flushing out for a very long time (sorry mail list
>>> blocks my large image.. ):
>>>
>>> http://i.stack.imgur.com/sEkKk.png
>>>
>>>
>>>
>>> Is anyone aware this kind of issue before..? Am I messed up something..?
>>> I have been working on OCaml for a relatively long time and I didn't
>>> encounter this kind of stuff before...
>>>
>>>
>>> Sincerely,
>>> Shuai
>>>
>>
>>
>

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