shouldn't alloca be a macro? about orangec

[LADSoft]

Hi Lionfaith,

I too am unsure whether to classify it as a 'bug' since alloca isn't
part of the C standard :). However, as there is a precedent for how it
is handled I've adjusted Orange C to do it the same way. Now, if you
want alloca or _alloca to be supported include "malloc.h" and it will
define them as macros.

David
lionfaith wrote:

Hello!
I'm not sure about this one. But I discovered that SDL 1.2.12, in
SDL_stdinc.h, tests the presence of alloca function with |#if
defined(HAVE_ALLOCA) && !defined(alloca)| as if alloca were a macro.
But it doesn't work with occ which doesn't see it that way. I had to
hack the header to specifically manage OrangeC case. I'm not sure if
it is really a bug though.

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[lionfaith]

As I can read it in SDL_stdinc.h, it is the way msvc, borland and watcom does it. (but Gnu has __builtin_alloca, digital mars puts alloca in stdlib.h, AIX asks for a #pragma alloca and MRC asks for declaration void *alloca (unsigned);). Too bad it is not standardised, at least with a standardised way of knowing if alloca is there and how to "activate" it.
Thanks for your work!

[LADSoft]

you're welcome. mingw/gnu actually has alloca defined as macros in malloc.h, they reference the __builtin_alloca function. I chose to do it the same way :)