Description:
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Using mpm_winnt, if the child process dies, some of the php_apache_sapi_* functions seem to be called with SG(server_context) == NULL.
This (sometimes??) results in crashing the parent process.
I added a check for SG(server_context) == NULL to each function and the problem went away, but perhaps you could think of a better solution.

Reproduce code:
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Write a script that crashes the child process. E.g. disable memory_limit and do

for ($b = 'x'; ; $b .= $b);

I also once inserted an exit(1) into apache's child.c with the same results, but doing it via PHP seems more realistic.
Try to load the page a few times.

Expected result:
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Apache restarts the child process.


Actual result:
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Sometimes it does, sometimes it crashes... ratio is about 2/3.
When it crashes, the cause is an access to memory at address 0x0 or 0x4, in php4apache2.dll. Looking at the local variables, it appears that SG(server_context) is NULL.
I was not able to reproduce a crash after I added checks for SG(server_context) == NULL to sapi_apache2.c.