1 files changed, 22 insertions, 0 deletions
diff --git a/clang/lib/AST/ASTContext.cpp b/clang/lib/AST/ASTContext.cpp
index 94a5addff25..f488ef7995b 100644
--- a/clang/lib/AST/ASTContext.cpp
+++ b/clang/lib/AST/ASTContext.cpp
@@ -7949,6 +7949,28 @@ bool ASTContext::areCompatibleVectorTypes(QualType FirstVec,
   return false;
 }
 
+bool ASTContext::hasDirectOwnershipQualifier(QualType Ty) const {
+  while (true) {
+    // __strong id
+    if (const AttributedType *Attr = dyn_cast<AttributedType>(Ty)) {
+      if (Attr->getAttrKind() == attr::ObjCOwnership)
+        return true;
+
+      Ty = Attr->getModifiedType();
+
+    // X *__strong (...)
+    } else if (const ParenType *Paren = dyn_cast<ParenType>(Ty)) {
+      Ty = Paren->getInnerType();
+
+    // We do not want to look through typedefs, typeof(expr),
+    // typeof(type), or any other way that the type is somehow
+    // abstracted.
+    } else {
+      return false;
+    }
+  }
+}
+
 //===----------------------------------------------------------------------===//
 // ObjCQualifiedIdTypesAreCompatible - Compatibility testing for qualified id's.
 //===----------------------------------------------------------------------===//