Re: mac port not really working

[John Velman]

For the record, I'm running OS X 10.5.6 on iMac with 2.4GHz Intel Core 2 Duo, 
and Gnu prolog 1.3.0 compiled from source gprolog-1.3.0.tar.gz on my machine 
with no problem.

When I ran  running's example, copied and pasted into a terminal it works fine, 
viz:

---
jrv:~ jr$  gprolog --init-goal 'write(before), nl' --entry-goal 'write(inside),
> nl' --query-goal 'append([a,b],[c,d],X)'
before
GNU Prolog 1.3.0
By Daniel Diaz
Copyright (C) 1999-2007 Daniel Diaz
inside
| ?- append([a,b],[c,d],X).

X = [a,b,c,d]

yes
| ?-         
-----

I find that with Mac's excellent developers package, I do best by compiling 
from source rather than using a package.  I also installed both macports and 
fink when I first transitioned to Mac from Linux, but found that (for me, at 
least) I was better off without them.  

(I haven't tried (gprolog 1.3.1 yet -- too many irons in the fire to keep up to 
date on everything).  

By the way, Daniel, thanks for the fine prolog!

Best,

John Velman

Daniel Diaz <address@hidden> writes:
> Hi Karel & Paulo
>
> Thanks for the bug report. I try to fix it as soon as possible.
>
> Daniel
>
>
> Paulo Moura a écrit :
>>
>> On 2009/03/09, at 21:52, running wrote:
>>
>>> I want to use mac port of gprolog and it's not really working.
>>>
>>> My problem is this - I can run the "gnuprolog" program, without
>>> parameters, just fine - but after I use the --entry-goal or
>>> --query-goal , it just falls down with:
>>> "Fatal Error: Segmentation Violation"
>>> error message.
>>>
>>> So, if I run the example from the manual:
>>>
>>> " gprolog --init-goal 'write(before), nl' --entry-goal 'write(inside),
>>> nl' --query-goal 'append([a,b],[c,d],X)' "
>>>
>>> I have "before" and "Fatal Error: Segmentation Violation" on shell.
>>> Even if I run only
>>>
>>> "gprolog --query-goal 'something(else)'" or "gprolog --entry-goal
>>> 'something(else)'", I have the same fatal error. If I run gprolog and
>>> THEN enter, manually, the same query into gprolog, it works just fine.
>>>
>>> Well, more about my computer - I use Mac OS X 10.5.6 build 9G55, 1.66
>>> GHz Intel Core Duo processor. I tried to install gprolog both through
>>> macports (with "port install gprolog") and the package on your site,
>>> both with the same effect. I am clueless what's going on.
>>
>>
>> I'm able to reproduce the problem in my MacBook Pro. I only use
>> "--init-goal" in my applications, which works as expected. Follows a
>> gdb back-trace:
>>
>> pmmbp:~ pmoura$ gdb gprolog
>> GNU gdb 6.3.50-20050815 (Apple version gdb-962) (Sat Jul 26 08:14:40
>> UTC 2008)
>> Copyright 2004 Free Software Foundation, Inc.
>> GDB is free software, covered by the GNU General Public License, and
>> you are
>> welcome to change it and/or distribute copies of it under certain
>> conditions.
>> Type "show copying" to see the conditions.
>> There is absolutely no warranty for GDB.  Type "show warranty" for
>> details.
>> This GDB was configured as "i386-apple-darwin"...Reading symbols for
>> shared libraries ... done
>>
>> (gdb) run --init-goal 'write(before), nl' --entry-goal
>> write(inside), nl' --query-goal 'append([a,b],[c,d],X)'
>> Starting program: /opt/local/bin/gprolog --init-goal 'write(before),
>> nl' --entry-goal 'write(inside), nl' --query-goal
>> append([a,b],[c,d],X)'
>> Reading symbols for shared libraries ++. done
>> before
>>
>> Program received signal EXC_BAD_ACCESS, Could not access memory.
>> Reason: KERN_PROTECTION_FAILURE at address: 0x00000004
>> 0x0007ad12 in G_Assign_Element ()
>> (gdb) bt
>> #0  0x0007ad12 in G_Assign_Element ()
>> #1  0x000a83ba in Call_Next ()
>> Cannot access memory at address 0x80000007
>> (gdb)
>>
>> Daniel, is the information above helpful for diagnosing the problem?
>>
>> Cheers,
>>
>> Paulo
>>
>>
>> -----------------------------------------------------------------
>> Paulo Jorge Lopes de Moura, PhD
>> Assistant Professor
>> Dep. of Computer Science, University of Beira Interior
>> 6201-001 Covilhã, Portugal
>>
>> Office 4.3  Ext. 3257
>> Phone: +351 275319891 Fax: +351 275319899
>> Email: <mailto:address@hidden>
>>
>> Home page: <http://www.di.ubi.pt/~pmoura>
>> Research:  <http://logtalk.org/>
>> -----------------------------------------------------------------
>>
>>
>>
>>
>>
>>
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