-Ct causes exception with fpc apache module

[toby]

Hi

I just updated my httpd server and then alway recompile all my fpc cgi and fpc apache modules

i coupled this with wanting to play with some fpc.cfg option to see about speed vs size of executables etc (-XX is wonderful)

i get no compiler errors when i compile any cgi or apache modules

but when i use -Ct  (which i thought caught stack problems in compiling) and restart my server i get
Set default codegeneration checks for stack

An unhandled exception occurred at $B74C5C04:
EStackOverflow: Stack overflow
  $B74C5C04
  $0809203D

when i access any web page or cgi or apache module the first TWO accesses of the server - then all seems okay

i traced it to the apache module (by commenting out the module loading in the httpd.conf)

but the cause is really using the -Ct option when compiling just the apache module (-Ct has no effect on the cgi programs)

i'd love to know what is really going on with -Ct and is there a way to use (it if it actually makes better code) doing some linux system or fpc code fix?

i tried increasing ulimit -s   but it had no effect unless i made it to small and then the httpd worker threads could be made

[lucamar]

but when i use -Ct  (which i thought caught stack problems in compiling) [...]

I have no idea what your problem might be* but according to the manual (the User Reference actually):

-Ct   Generate stack checking code. If your program performs a faulty stack operation, a run-rime error will be generated.

*Since you're getting a Stack overflow, maybe you need to use option -Cs?

-Csxxx   Set stack size to xxx.

But this is just a shot in the dark, just looking for stack related options

[lucamar]

I don't have much free-time at the moment but I'll give it a look when/if I can (it implies installing Apache in some machine or other, so be patient)

In the meantime, please read this wiki page, at least the first two sections: "Use code tags" and "Sharing large pieces of code". It may seem nitpicking but it's actually important