+// platform specific Clang analyzer support
+#ifndef NS_RETURNS_RETAINED
+# if WX_HAS_CLANG_FEATURE(attribute_ns_returns_retained)
+# define NS_RETURNS_RETAINED __attribute__((ns_returns_retained))
+# else
+# define NS_RETURNS_RETAINED
+# endif
+#endif
+
+#ifndef CF_RETURNS_RETAINED
+# if WX_HAS_CLANG_FEATURE(attribute_cf_returns_retained)
+# define CF_RETURNS_RETAINED __attribute__((cf_returns_retained))
+# else
+# define CF_RETURNS_RETAINED
+# endif
+#endif
+