RE: alloca in HP NonStop

[Joachim Schmitz]

> From: Paul Eggert [mailto:address@hidden
> Sent: Tuesday, July 03, 2012 10:45 AM
> To: Joachim Schmitz
> Cc: address@hidden
> Subject: Re: alloca in HP NonStop
> 
> On 07/02/2012 11:40 PM, Joachim Schmitz wrote:
> > I' don't quite understand, why not the entire alloca.in.h is bracketed by 
> > this.
> > At least now that it is used in 2 places?
> 
> We can't bracket the entire file, since (as far as I know) it's not safe to 
> put
> #include inside 'extern "C" { ... }'.
> How about the following patch instead?
> It tries to address your other comments.
> 
> diff --git a/ChangeLog b/ChangeLog
> index e7f7883..9dda6c7 100644
> --- a/ChangeLog
> +++ b/ChangeLog
> @@ -1,3 +1,10 @@
> +2012-07-03  Paul Eggert  <address@hidden>
> +
> +     alloca: add support for HP NonStop TNS/E native
> +     * lib/alloca.in.h (alloca): Support the new host.
> +     From a suggestion by Joachim Schmitz in
> +     <http://lists.gnu.org/archive/html/bug-gnulib/2012-
> 06/msg00355.html>.
> +
>  2012-07-02  Pádraig Brady  <address@hidden>
> 
>       fsusage: remove code not needed on non GNU/Linux systems.
> diff --git a/lib/alloca.in.h b/lib/alloca.in.h index 99be048..ed8aad3 100644
> --- a/lib/alloca.in.h
> +++ b/lib/alloca.in.h
> @@ -45,11 +45,18 @@
>  # elif defined __DECC && defined __VMS
>  #  define alloca __ALLOCA
>  # else
> -#  include <stddef.h>
> +#  if defined __TANDEM && defined _TNS_E_TARGET
> +#   pragma intrinsic (_alloca)
> +#   define alloca _alloca
> +typedef unsigned short _GL_ALLOCA_SIZE_T; #  else
> +#   include <stddef.h>
> +typedef size_t _GL_ALLOCA_SIZE_T;
> +#  endif
>  #  ifdef  __cplusplus
>  extern "C"
>  #  endif
> -void *alloca (size_t);
> +void *alloca (_GL_ALLOCA_SIZE_T);
>  # endif
>  #endif

Doesn't work, we need the prototype for _alloca() too.

Bye, Jojo