Asp Forum - Re: Ruby-dl problem: calling func with param

J.Hawkesworth

9/8/2003 10:31:00 AM

Hello Robert,

I think maybe there is a problem with your installation of ruby or gcc?

I just built ruby from sources on RedHat 8.0, gcc version 3.2 20020903 then copy and pasted your code.

I had to change test.rb
dlload 'test.so'
to
dlload '/home/machine/test/test.so'

but once I'd done that it compiled and ran fine:

[user@machine test]$ ruby test.rb
Hello!
1
3
[user@machine test]$ echo $?
0
[user@machine test]$

I have just noticed that you are using cygwin - maybe the problem is there?

Hope this helps,

Jon

-----Original Message-----
From: Robert Feldt [mailto:feldt@ce.chalmers.se]
Sent: 08 September 2003 09:50
To: ruby-talk ML
Subject: Ruby-dl problem: calling func with param

Hi,

I'm trying out ruby-dl and it looks great. However,
I get a seg fault when calling funcs that take parameters.
Anyone can spot the problem?

Here's a transcript showing what I did:

$ cat test.c
#include <stdio.h>

extern void hello()
{
printf("Hello!\n");
}

extern int one()
{
return 1;
}

extern int inc(int n)
{
return (n+1);
}

feldt@novomundo1 /tmp/using_ruby_dl/test
$ gcc -shared -o test.so test.c

feldt@novomundo1 /tmp/using_ruby_dl/test
$ cat test.rb
require 'dl/import'
module Test
extend DL::Importable
dlload 'test.so'

extern "void hello()"
extern "int one()"
extern "int inc(int)"
end
Test.hello
p Test.one
p Test.inc(2)

feldt@novomundo1 /tmp/using_ruby_dl/test
$ ruby test.rb
Hello!
1
(eval):5: [BUG] Segmentation fault
ruby 1.8.0 (2003-09-06) [i386-cygwin]

Segmentation fault (core dumped)

Regards,

Robert Feldt

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5 Answers

Robert Feldt

9/8/2003 10:46:00 AM

J.Hawkesworth <J.Hawkesworth@talis.com> skrev den Mon, 8 Sep 2003 19:31:26 +0900:

> Hello Robert,
>
Hi,

> I think maybe there is a problem with your installation of ruby or gcc?
>
> I just built ruby from sources on RedHat 8.0, gcc version 3.2 20020903 then copy and pasted your code.
>
> <snip>
> I have just noticed that you are using cygwin - maybe the problem is there?
>
Yeah, you''re probably right. It works on my linux machine here also.
Problem is I have a recent cygwin and fresh Ruby build.

$ gcc --version
gcc (GCC) 3.2 20020927 (prerelease)

$ ruby -v
ruby 1.8.0 (2003-09-06) [i386-cygwin]

Any ideas welcome.

Regards,

Robert

WATANABE Hirofumi

9/8/2003 11:08:00 AM

???????

Robert Feldt <feldt@ce.chalmers.se> writes:

> $ gcc --version
> gcc (GCC) 3.2 20020927 (prerelease)
>
> $ ruby -v
> ruby 1.8.0 (2003-09-06) [i386-cygwin]
>
> Any ideas welcome.

I can''t reproduce it.

porter:~/0309 % ruby -v
ruby 1.8.0 (2003-09-08) [i386-cygwin]
porter:~/0309 % ruby test.rb
Hello!
1
3

But Cygwin''s ruby has the same problem.

porter:~/0309 % /usr/bin/ruby test.rb
Hello!
1
(eval):5: [BUG] Segmentation fault
ruby 1.8.0 (2003-08-04) [i386-cygwin]

zsh: segmentation fault (core dumped) /usr/bin/ruby test.rb

--
eban

Robert Feldt

9/8/2003 11:21:00 AM

WATANABE Hirofumi <eban@os.rim.or.jp> skrev den Mon, 8 Sep 2003 20:07:48 +0900:

> I can''t reproduce it.
>
Thanks for trying it out.

> porter:~/0309 % ruby -v
> ruby 1.8.0 (2003-09-08) [i386-cygwin]
> porter:~/0309 % ruby test.rb
> Hello!
> 1
> 3
>
> But Cygwin''s ruby has the same problem.
>
> porter:~/0309 % /usr/bin/ruby test.rb
> Hello!
> 1
> (eval):5: [BUG] Segmentation fault
> ruby 1.8.0 (2003-08-04) [i386-cygwin]
>
> zsh: segmentation fault (core dumped) /usr/bin/ruby test.rb
>
Which Ruby version is the working one above? It says its also
a cygwin ruby. Sorry I don''t understand what you mean here.

I rebuilt from cvs sources but still get the same problem:

$ ruby -v
ruby 1.8.0 (2003-09-08) [i386-cygwin]

$ ruby test.rb
Hello!
1
(eval):5: [BUG] Segmentation fault
ruby 1.8.0 (2003-09-08) [i386-cygwin]

Regards,

--
Robert Feldt

WATANABE Hirofumi

9/8/2003 11:31:00 AM

Hi,

Robert Feldt <feldt@ce.chalmers.se> writes:

> Which Ruby version is the working one above? It says its also
> a cygwin ruby. Sorry I don''t understand what you mean
> here.

Sorry for confusing you.
I mean:

% /usr/local/bin/ruby -v
ruby 1.8.0 (2003-09-08) [i386-cygwin]
% /usr/bin/ruby -v
ruby 1.8.0 (2003-08-04) [i386-cygwin]

> I rebuilt from cvs sources but still get the same problem:
>
> $ ruby -v
> ruby 1.8.0 (2003-09-08) [i386-cygwin]
>
> $ ruby test.rb
> Hello!
> 1
> (eval):5: [BUG] Segmentation fault
> ruby 1.8.0 (2003-09-08) [i386-cygwin]

Hmm, dl.so is updated?

--
eban

Robert Feldt

9/8/2003 11:55:00 AM

WATANABE Hirofumi <eban@os.rim.or.jp> skrev den Mon, 8 Sep 2003 20:31:15 +0900:

>> I rebuilt from cvs sources but still get the same problem:
>>
>> $ ruby -v
>> ruby 1.8.0 (2003-09-08) [i386-cygwin]
>>
>> $ ruby test.rb
>> Hello!
>> 1
>> (eval):5: [BUG] Segmentation fault
>> ruby 1.8.0 (2003-09-08) [i386-cygwin]
>
> Hmm, dl.so is updated?
>
Yes, as far as I can see:

$ ls -al /usr/local/lib/ruby/1.8/i386-cygwin/dl.so
-rwxr-xr-x 1 root mkpasswd 80384 Sep 8 13:17 /usr/local/lib/ruby/1.8/
i386-cygwin/dl.so

$ md5sum /tmp/ruby/ext/dl/dl.so
7bd746620e49bdf3aed77bc86669e8c7 */tmp/ruby/ext/dl/dl.so

$ md5sum /usr/local/lib/ruby/1.8/i386-cygwin/dl.so
7bd746620e49bdf3aed77bc86669e8c7 */usr/local/lib/ruby/1.8/i386-cygwin/dl.so

and I rebooted just to be sure. The problem remains.

Regards,

Robert

comp.lang.ruby

Re: Ruby-dl problem: calling func with param

J.Hawkesworth

Robert Feldt

WATANABE Hirofumi

Robert Feldt

WATANABE Hirofumi

Robert Feldt

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