[PATCH] libgcc: Use braces instead of macro's empty body to avoid xgcc warnings.

[Chen Gang S]

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);
                                                       ^

2015-01-31  Chen Gang  <gang.chen.5i5j@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