On Sat, Jan 31, 2015 at 06:37:30AM +0800, Chen Gang S wrote:
> The related warning (cross compile tile with --disable-threads):
>
> ../../../../gcc-tile-new/libgcc/libgcov-interface.c: In function
> '__gcov_fork':
> ../../../../gcc-tile-new/libgcc/libgcov-interface.c:182:53: warning:
> suggest braces around empty body in an 'if' statement [-Wempty-body]
> __GTHREAD_MUTEX_INIT_FUNCTION (&__gcov_flush_mx);
> ^
Then you should use do {} while (0) instead of {} . Also, braces not breaces.
> 2015-01-31 Chen Gang <gang.chen.5...@gmail.com>
>
> * gthr-single.h (__GTHREAD_MUTEX_INIT_FUNCTION): Use breaces
> instead of macro's empty body to avoid xgcc warnings.
> ---
> 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..586fec5 100644
> --- a/libgcc/gthr-single.h
> +++ b/libgcc/gthr-single.h
> @@ -35,7 +35,7 @@ typedef int __gthread_recursive_mutex_t;
>
> #define __GTHREAD_ONCE_INIT 0
> #define __GTHREAD_MUTEX_INIT 0
> -#define __GTHREAD_MUTEX_INIT_FUNCTION(mx)
> +#define __GTHREAD_MUTEX_INIT_FUNCTION(mx) {}
> #define __GTHREAD_RECURSIVE_MUTEX_INIT 0
>
> #define UNUSED __attribute__((unused))
> --
> 1.9.3
Jakub
