supporting clang memory management annotations

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@71742 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/include/wx/osx/core/private.h b/include/wx/osx/core/private.h
index e1b64182edeb282430fc4c9cbde0524cd3261835..9d819143dd626cdae19db7df44df138b284b52b4 100644 (file)
--- a/include/wx/osx/core/private.h
+++ b/include/wx/osx/core/private.h
@@ -32,6 +32,29 @@
     #define wxOSX_10_6_AND_LATER(x)
 #endif
 
+// common defs for clang analyzer support
+
+#ifndef __has_feature      // Optional.
+    #define __has_feature(x) 0 // Compatibility with non-clang compilers.
+#endif
+
+#ifndef NS_RETURNS_RETAINED
+    #if __has_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 __has_feature(attribute_cf_returns_retained)
+        #define CF_RETURNS_RETAINED __attribute__((cf_returns_retained))
+    #else
+        #define CF_RETURNS_RETAINED
+    #endif
+#endif
+
+
 #if ( !wxUSE_GUI && !wxOSX_USE_IPHONE ) || wxOSX_USE_COCOA_OR_CARBON
 
 // Carbon functions are currently still used in wxOSX/Cocoa too (including