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Stack Overflow Detection
Mono supports converting a stack overflow into a
StackOverflowException that the user can use to
pinpoint problems in his software.
The detection works by:
* Setting up a number of guard pages below a certain
point in the thread stack and unprotect them if we get a
segv there.
* If a segv is caught on those pages, control is
transfered to the standard exception handling code.
* During the unwinding, the stack pages are protected
again.
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