1 files changed, 10 insertions, 0 deletions
diff --git a/clang/lib/AST/DeclBase.cpp b/clang/lib/AST/DeclBase.cpp
index e46d671682f..e4d4e77942d 100644
--- a/clang/lib/AST/DeclBase.cpp
+++ b/clang/lib/AST/DeclBase.cpp
@@ -291,6 +291,16 @@ bool Decl::isUsed(bool CheckUsedAttr) const {
   return false; 
 }
 
+void Decl::markUsed(ASTContext &C) {
+  if (Used)
+    return;
+
+  if (C.getASTMutationListener())
+    C.getASTMutationListener()->DeclarationMarkedUsed(this);
+
+  Used = true;
+}
+
 bool Decl::isReferenced() const { 
   if (Referenced)
     return true;