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This queue is for tickets about the Language-Prolog-Yaswi CPAN distribution.

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The Basics
Id: 36168
Status: resolved
Worked: 5 min
Priority: 0/
Queue: Language-Prolog-Yaswi

People
Owner: salva [...] cpan.org
Requestors: esia168 [...] yahoo.com
Cc:
AdminCc:

Bug Information
Severity: Critical
Broken in: 0.14
Fixed in: (no value)



Subject: child pid 13466 exit signal Segmentation fault in mod_perl
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Platforms Distributor ID: Ubuntu Description: Ubuntu 8.04 Release: 8.04 Codename: hardy Linux william-pc 2.6.24-16-generic #1 SMP Thu Apr 10 13:23:42 UTC 2008 i686 GNU/Linux Server version: Apache/2.2.8 (Ubuntu) SWI-Prolog version 5.6.55 for i686-linux mod_perl 2.0 Language-Prolog-Yaswi-0.14 Apache config <VirtualHost *> ServerAdmin webmaster@localhost ServerName localhost DocumentRoot /var/www/ <Directory /var/www/> Options Indexes FollowSymLinks MultiViews AllowOverride None Order allow,deny allow from all </Directory> Alias /modperl/ /var/www/modperl/ #PerlSetEnv PERLDB_OPTS "NonStop=1 LineInfo=/tmp/db.out AutoTrace=1 frame=2" #PerlModule Apache::DB PerlModule ModPerl::RegistryPrefork <Location /modperl/> # PerlFixupHandler Apache::DB SetHandler perl-script PerlResponseHandler ModPerl::RegistryPrefork PerlOptions +ParseHeaders Options +ExecCGI Order allow,deny Allow from all </Location> # ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/ # <Directory "/usr/lib/cgi-bin"> # AllowOverride None # Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch # Order allow,deny # Allow from all # </Directory> ErrorLog /var/log/apache2/error.log # Possible values include: debug, info, notice, warn, error, crit, # alert, emerg. LogLevel warn CustomLog /var/log/apache2/access.log combined ServerSignature On Alias /doc/ "/usr/share/doc/" <Directory "/usr/share/doc/"> Options Indexes MultiViews FollowSymLinks AllowOverride None Order deny,allow Deny from all Allow from 127.0.0.0/255.0.0.0 ::1/128 </Directory> </VirtualHost> #When running use CGI qw(:standard); print header; use Language::Prolog::Yaswi qw(:query :run); use Language::Prolog::Types::overload; use Language::Prolog::Sugar functors => { equal => '=', is => 'is' }, chains => { orn => ';', andn => ',', add => '+' }, vars => [qw (X Y Z)]; swi_set_query( equal(X, Y), orn( equal(X, 27), equal(Y, 'hello'))); while (swi_next) { printf "Query=".swi_query()."\n"; printf " X=%_, Y=%_\n\n", swi_var(X), swi_var(Y); } #error [PROLOG SYSTEM ERROR: Thread 1 Recursively received fatal signal 11 PROLOG STACK: ] #When the nosignals is added swi_init('-nosignals'); [Thu May 22 17:07:48 2008] [notice] child pid 13466 exit signal Segmentation fault (11) [Thu May 22 17:07:48 2008] [notice] child pid 13492 exit signal Segmentation fault (11) [Thu May 22 17:07:48 2008] [notice] child pid 13493 exit signal Segmentation fault (11) [Thu May 22 17:07:48 2008] [notice] child pid 13494 exit signal Segmentation fault (11) [Thu May 22 17:07:48 2008] [notice] child pid 13495 exit signal Segmentation fault (11) I found the potential solution might be at http://gollem.science.uva.nl/SWI-Prolog/Manual/foreigninclude.html#sec:9.6.20.1 9.6.20.1 Threading, Signals and embedded Prolog But when I uninstall and install the swi-prolog from source, also using sh configure --disable-segv-handling Now I got the new error of pl: Usage: 1) pl --help Display this message (also -h) 2) pl --version Display version information (also -v) 3) pl --arch Display architecture 4) pl --dump-runtime-variables[=format] Dump link info in sh(1) format 5) pl [options] 6) pl [options] [-o output] -c file ... 7) pl [options] [-o output] -b bootfile -c file ... Options: -x state Start from state (must be first) -[LGTA]size[KMG] Specify {Local,Global,Trail,Argument} limits -t toplevel Toplevel goal -g goal Initialisation goal -f file User initialisation file -F file System initialisation file -s file Script source file [+/-]tty Allow tty control -O Optimised compilation --nosignals Do not modify any signal handling --nodebug Omit generation of debug info --quiet Quiet operation (also -q) --home=DIR Use DIR as SWI-Prolog home [Sun May 25 16:50:40 2008] [error] unable to start prolog engine at /usr/local/lib/perl/5.8.8/Language/Prolog/Yaswi/Low.pm line 63.\n Seems like the wrong command argument has been passed by Yaswi. Thanks.
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update Show quoted text
> Yes, the Yaswi-0.14 works fine under perl-5.8.8 and mod_perl, not more > segmentation fault after I recompiled my swi-prolog with > --disable-segv-handling . >


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