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Date: Wed, 24 Mar 2010 23:24:16 -0700
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Subject: How to trace a crash bug?
From: thruska@cubiclesoft.com (Thomas Hruska)

PHP 5.2.13 on Windows XP SP3 w/ Apache (PHP as a module) is crashing for 
me.  I've tried to create a simple test case to reproduce but I'm not 
able to.  Any hints/tips or a guide on how to debug this would be highly 
appreciated.  I'm not adverse to debuggers and I have VS2008 
Professional on this machine.

The system I'm writing is quite complex so I'm not too surprised that I 
finally ran into a crash bug but tracing this one has me baffled.  I 
used my traditional "when all else fails start displaying junk on the 
screen" approach to trace the problem to a new function I just wrote 
today but it crashes somewhere before the function call itself (i.e. it 
never makes it into the function) - the caller of the function is also a 
function.  Both functions are in the global scope.


Apache log:

<A few zillion entries before this one exist that are identical except 
for the timestamp and child process ID.>
[Wed Mar 24 23:03:47 2010] [notice] Parent: child process exited with 
status 3221225477 -- Restarting.
[Wed Mar 24 23:03:47 2010] [notice] Apache/2.2.13 (Win32) PHP/5.2.13 
configured -- resuming normal operations
[Wed Mar 24 23:03:47 2010] [notice] Server built: Aug  6 2009 15:50:50
[Wed Mar 24 23:03:47 2010] [notice] Parent: Created child process 1556
[Wed Mar 24 23:03:47 2010] [notice] Child 1556: Child process is running
[Wed Mar 24 23:03:47 2010] [notice] Child 1556: Acquired the start mutex.
[Wed Mar 24 23:03:47 2010] [notice] Child 1556: Starting 64 worker threads.
[Wed Mar 24 23:03:47 2010] [notice] Child 1556: Starting thread to 
listen on port 80.


-- 
Thomas Hruska
CubicleSoft President
Ph: 517-803-4197

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