Thread stack size (was: varbind management/construction problem)

[D. R. Evans]

On 28 Sep 2002 at 13:33, Jochen Katz wrote:

> Dave Mason wrote:
> > Woohoo!  That did it.  The stack size in threads.h was 10000.  I tried
> > 100000 and it ran fine.  Do you have any suggestion as to how to determine
> > the correct stack size?
> 
> Sorry, no. Does anybody on the list have an answer/link regarding this
> question?
> 

No, but I have another question. Why isn't the -fstack-check flag used in 
the g++ makefiles?

http://gcc.gnu.org/onlinedocs/gcc-2.95.3/gcc_2.html#SEC2 says:

>@gcctabopt{-fstack-check}
>Generate code to verify that you do not go beyond the boundary of the
>stack. You should specify this flag if you are running in an environment
>with multiple threads, but only rarely need to specify it in a
>single-threaded environment since stack overflow is automatically
>detected on nearly all systems if there is only one stack. Note that this
>switch does not actually cause checking to be done; the operating system
>must do that. The switch causes generation of code to ensure that the
>operating system sees the stack being extended.

This is pretty vague as to whether stack checking really gets done under 
any particular OS (it sure would be nice to see a list of OSes that really 
do the checking properly), but it isn't vague that the flag should be used.

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