Re: [Caml-list] problem creating .cma library

[Guillaume Yziquel <guillaume.yziquel@citycable.ch>]

Damien Doligez a écrit :
> 
> On 2009-12-31, at 00:30, Guillaume Yziquel wrote:
> 
>>> #include <stdio.h>
>>> #include <caml/mlvalues.h>
>>> #include "../mylib/mylib.h"
>>> CAMLprim value
>>> my_print_stub(value v) {
>>
>>      CAMLparam1(v);  /* is missing here, for garbage
>>                         collection purposes. */
>>
>>>    char* str = (char*)String_val( v );
>>
>>      /* You do not need the right-hand side (char*) casting. */
>>
>>>    my_print( str );
>>>    return Val_unit;
>>> }
> 
> If you use CAMLparam1, you must use CAMLreturn instead of return.

Yes. Indeed. Didn't see it.

However, I had a look at

	https://yquem.inria.fr/caml/svn/ocaml/version/3.09/byterun/sys.c

and more specifically at the function

> CAMLprim value caml_sys_exit(value retcode)
> {
> #ifndef NATIVE_CODE
>   caml_debugger(PROGRAM_EXIT);
> #endif
>   exit(Int_val(retcode));
>   return Val_unit;
> }

or the function

> CAMLprim value caml_sys_close(value fd)
> {
>   close(Int_val(fd));
>   return Val_unit;
> }

Why do these functions not follow the usual CAMLparam/CAMLreturn macro 
stuff?

-- 
      Guillaume Yziquel
http://yziquel.homelinux.org/