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

[Shuai Wang <wangshuai901@gmail.com>]

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☁  src [master] ⚡ ldd init.native
linux-vdso.so.1 =>  (0x00007fff55dfe000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0
(0x00007fa4fc9c0000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007fa4fc6c4000)
libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007fa4fc4bf000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fa4fc101000)
/lib64/ld-linux-x86-64.so.2 (0x00007fa4fcbfe000)

On Fri, Jul 17, 2015 at 3:11 PM, Ivan Gotovchits <ivg@ieee.org> wrote:

> 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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