Debugging Tips

Hi- PHP 4.3.1 as APXS2 (2.0.44) on a fairly recent FreeBSD 4.8 RC I'm having a hell of a time with PHP segfaulting on me. I'm trying to whittle down the problematic code into a simple test case, but it only happens during use of a complex inherited class with overloading enabled. This class uses mysql, and in the ktrace it looks like it's just finished getting data from the mysql server before it chokes. I don't know apache internals at all. Is there a way to get a dump of just the PHP module? Are there any help documents on how to debug this kind of problem? (like a PHP equivalent to apache's http://httpd.apache.org/dev/debugging.html ?) Anyone have any suggestions? Thanks, Ben Burke -- Some details; The apache errors when the code is run are: [notice] child pid 49761 exit signal Segmentation fault (11) -and- httpd in free(): warning: chunk is already free Ktrace looks like this before the signal: 19575 httpd 1049374829.256094 CALL read(0xd,0x82d4000,0x1) 19575 httpd 1049374829.256099 GIO fd 13 read 1 byte "\M-~" 19575 httpd 1049374829.256102 RET read 1 19575 httpd 1049374829.256215 PSIG SIGSEGV caught handler=0x806168c mask=0x0 code=0x0