[PATCH] libgcc: Don't use "unused" in gthr-single.h

[Jack Howarth]

This change has already been proposed as part of a more extensive fix
in https://gcc.gnu.org/ml/gcc-patches/2015-02/msg00775.html.

On Sun, Feb 22, 2015 at 9:28 PM, Segher Boessenkool
<segher@kernel.crashing.org> wrote:
> Header files shouldn't use identifiers in the application namespace.
> gth-single.h does however; this makes the libstdc++ testsuite
> all_attributes.cc fail for targets without software threads.
>
> Is this okay for mainline?  And 4.9, 4.8?
>
>
> Segher
>
>
> 2015-02-22  Segher Boessenkool  <segher@kernel.crashing.org>
>
> libgcc/
>         * gthr-single.h: Use __unused__ instead of unused.
>
> ---
>  libgcc/gthr-single.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/libgcc/gthr-single.h b/libgcc/gthr-single.h
> index f084fe2..bddded4 100644
> --- a/libgcc/gthr-single.h
> +++ b/libgcc/gthr-single.h
> @@ -38,7 +38,7 @@ typedef int __gthread_recursive_mutex_t;
>  #define __GTHREAD_MUTEX_INIT_FUNCTION(mx)
>  #define __GTHREAD_RECURSIVE_MUTEX_INIT 0
>
> -#define UNUSED __attribute__((unused))
> +#define UNUSED __attribute__((__unused__))
>
>  #ifdef _LIBOBJC
>
> --
> 1.8.1.4
>