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List:       gcc-patches
Subject:    [PATCH v3] libgcc: Use braces instead of macro's empty body to avoid xgcc warnings.
From:       Chen Gang S <gang.chen () sunrus ! com ! cn>
Date:       2015-01-31 12:42:13
Message-ID: 54CCCDA5.2010600 () sunrus ! com ! cn
[Download RAW message or body]

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 empty do-
	while loop as macro body.
---
 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..01366f53 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) do {} while (0)
 #define __GTHREAD_RECURSIVE_MUTEX_INIT 0
 
 #define UNUSED __attribute__((unused))
-- 
1.9.3


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