[plt-scheme] Segfault in web server (due to missing library??)

On Thu, Oct 29, 2009 at 3:26 PM, David Storrs <david.storrs at gmail.com> wrote:
>
>
> On Thu, Oct 29, 2009 at 5:17 PM, Jay McCarthy <jay.mccarthy at gmail.com>
> wrote:
>>
>> On Thu, Oct 29, 2009 at 3:08 PM, David Storrs <david.storrs at gmail.com>
>> wrote:
>> >
>> >
>> > On Thu, Oct 29, 2009 at 5:02 PM, Jay McCarthy <jay.mccarthy at gmail.com>
>> > wrote:
>> >>
>> >> It doesn't segfault for me...
>> >
>> > Yeah, it doesn't segfault on my local machine either...it must be
>> > something
>> > that we simply haven't installed yet.  Like I said, VERY bare bones.  I
>> > even
>> > had to install locate, which I thought was part of the core system.
>>
>> You need openssl... I don't know what parts there are, so I don't know
>> what the smallest part you need is.
>
>   sudo apt-get install openssl
>   [...stuff...]
>   openssl is already the newest version.

Try openssl-dev

>
>>
>> Can you send the stack trace from gdb?
>
> I'm actually having a little trouble turning the core file into a stack
> trace.
>
>   gdb core
>   "[long path]/core": not in executable format: File format not recognized"
>
> I tried compiling server.ss with mzc and doing gdb and running gdb
> compiles/server.zo core but that failed the same way.  What is the right way
> to do this?

I don't know about the core file, but you want to run mzscheme it gdb:

$ gdb mzscheme
...
> run -t hmac-sha1-user.ss
... error
> bt

>
>
>
>>
>> >> HMAC-SHA1/raw
>> > #<procedure:...ers/hmac-sha1.ss:26:19>
>> >> EVP_SHA1
>> > #<procedure:ffi:proc>
>>
>> Can you call these two and report the results?
>>
>
>  > (EVP_SHA1)
> #<cpointer>
>
>  > (HMAC-SHA1/raw (string->bytes/utf-8 "key") (string->bytes/utf-8 "data"))
> SIGSEGV fault on 0xe00000000
> Aborted
>
>
> Thanks for the fast feedback on this, Jay.  No rush on it for now,
> though...I'm walking out the door and won't be around until this evening.
>
> Dave
>



-- 
Jay McCarthy <jay at cs.byu.edu>
Assistant Professor / Brigham Young University
http://teammccarthy.org/jay

"The glory of God is Intelligence" - D&C 93