So I got apache to run under gdb, but I still am somewhat non-the-wiser. It appears to happen the second time that the handler is used to process the request, so I guess one workaround would be to call my script as a plain cgi.
I'm not really how to interpret the gdb backtrace: Program received signal SIGSEGV, Segmentation fault. [Switching to Thread -1214974272 (LWP 20348)] 0xb76a9628 in XS_Apache2__RequestRec_send_cgi_header () from /usr/lib/perl5/auto/Apache2/Response/Response.so (gdb) bt #0 0xb76a9628 in XS_Apache2__RequestRec_send_cgi_header () from /usr/lib/perl5/auto/Apache2/Response/Response.so #1 0xb787a3b9 in Perl_pp_entersub () from /usr/lib/libperl.so.5.8 #2 0xb7872917 in Perl_runops_standard () from /usr/lib/libperl.so.5.8 #3 0xb7811ef0 in Perl_get_cv () from /usr/lib/libperl.so.5.8 #4 0xb7815cf1 in Perl_call_sv () from /usr/lib/libperl.so.5.8 #5 0xb7931b7f in modperl_callback () from /usr/lib/apache2/modules/mod_perl.so #6 0xb7932451 in modperl_callback_run_handlers () from /usr/lib/apache2/modules/mod_perl.so #7 0xb79326ff in modperl_callback_per_dir () from /usr/lib/apache2/modules/mod_perl.so #8 0xb792cf61 in modperl_response_finish () from /usr/lib/apache2/modules/mod_perl.so #9 0xb792d1e2 in modperl_response_handler_cgi () from /usr/lib/apache2/modules/mod_perl.so #10 0x08077e38 in ap_run_handler () #11 0x080781bc in ap_invoke_handler () #12 0x08069c7f in ap_process_request () #13 0x08064c52 in _start () > -----Original Message----- > From: William A. Rowe, Jr. [mailto:[EMAIL PROTECTED] > Sent: Wednesday, September 05, 2007 12:00 AM > To: Manoj Bist > Cc: Matt Williamson; [EMAIL PROTECTED]; modperl@perl.apache.org > Subject: Re: seg faults when running modperl and GD::Graph > > Manoj Bist wrote: > > One option would to be run apache under single threaded mode(option > > -X) under gdb and see where it is crashing. Once you identify the > > .so where it is crashing, you can try reproducing the crash outside > > apache context. > > See also http://httpd.apache.org/dev/debugging.html
