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Date: -- (:)
From: Alain Frisch <Alain.Frisch@i...>
Subject: Re: [Caml-list] cywgin stack overflow
Igor Peshansky wrote:
> On Wed, 13 Jun 2007, Alain Frisch wrote:
>> FYI, OCaml does not implement stack detection under Cygwin in native
>> code (contrary to MSVC and Mingw ports), so the difference of behavior
>> between ocamlopt and ocamlopt.opt is not suprising.  (I guess you get
>> the equivalent of a segfault with ocamlopt.opt, but maybe nothing is
>> printed.)
> 
> In that case there should be a ocamlopt.opt.exe.stackdump somewhere...
> 
> On a different note, why doesn't it?  Is there a special Cygwin flag that
> disables that code?  Is the mechanism any different than on Linux?

The technique to catch stack overflow is specific to the system. For
Win32, it is implemented in byterun/win32.c (for unices, stack detection
is implemented in asmrun/signals_asm.c). As far as I understand, win32.c
is not used by the Cygwin port (which is considered as a Unix for the
build process). I don't know whether the stack detection code in win32.c
would work for Cygwin, but I don't see any reason why I wouldn't.

-- Alain