Suppress unused typedef warning when using clang.

boostorg · Dec 10, 2015 · 073b294 · 073b294
1 parent dd28aed
commit 073b294
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/include/boost/asio/detail/handler_type_requirements.hpp b/include/boost/asio/detail/handler_type_requirements.hpp
@@ -53,8 +53,10 @@
 # include <boost/asio/handler_type.hpp>
 #endif // defined(BOOST_ASIO_ENABLE_HANDLER_TYPE_REQUIREMENTS)
 
-// Newer gcc needs special treatment to suppress unused typedef warnings.
-#if defined(__GNUC__)
+// Newer gcc, clang need special treatment to suppress unused typedef warnings.
+#if defined(__clang__) && (__clang_major__ >= 7)
+# define BOOST_ASIO_UNUSED_TYPEDEF __attribute__((__unused__))
+#elif defined(__GNUC__)
 # if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 8)) || (__GNUC__ > 4)
 #  define BOOST_ASIO_UNUSED_TYPEDEF __attribute__((__unused__))
 # endif // ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 8)) || (__GNUC__ > 4)