Index: include/clang/AST/Attr.h
===================================================================
--- include/clang/AST/Attr.h	(revision 214340)
+++ include/clang/AST/Attr.h	(working copy)
@@ -16,6 +16,7 @@
 
 #include "clang/AST/AttrIterator.h"
 #include "clang/AST/Decl.h"
+#include "clang/AST/Expr.h"
 #include "clang/AST/Type.h"
 #include "clang/Basic/AttrKinds.h"
 #include "clang/Basic/LLVM.h"