commit fe7dbb75f09acb2e980fda4bef274cfbc007fc68
author Christopher Kohlhoff <chris@kohlhoff.com> Thu Oct 01 08:47:25 2015 +1000
committer Christopher Kohlhoff <chris@kohlhoff.com> Thu Oct 01 08:47:25 2015 +1000
tree c78c29a592d121b37e790501bc6de6144ae140b3
parent 6c70257e20ef159c581298b54838361bb54bfce4

Suppress unused typedef warning when using clang.

asio/include/asio/detail/handler_type_requirements.hpp

diff --git a/asio/include/asio/detail/handler_type_requirements.hpp b/asio/include/asio/detail/handler_type_requirements.hpp
index 64b80a1..04bab88 100644
--- a/asio/include/asio/detail/handler_type_requirements.hpp
+++ b/asio/include/asio/detail/handler_type_requirements.hpp
@@ -53,8 +53,10 @@
 # include "asio/handler_type.hpp"
 #endif // defined(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 ASIO_UNUSED_TYPEDEF __attribute__((__unused__))
+#elif defined(__GNUC__)
 # if ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 8)) || (__GNUC__ > 4)
 #  define ASIO_UNUSED_TYPEDEF __attribute__((__unused__))
 # endif // ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 8)) || (__GNUC__ > 4)