Index: lib/AST/ASTImporter.cpp
===================================================================
--- lib/AST/ASTImporter.cpp
+++ lib/AST/ASTImporter.cpp
@@ -7199,8 +7199,11 @@
 
 Decl *ASTImporter::Imported(Decl *From, Decl *To) {
   if (From->hasAttrs()) {
-    for (auto *FromAttr : From->getAttrs())
-      To->addAttr(FromAttr->clone(To->getASTContext()));
+    for (auto *FromAttr : From->getAttrs()) {
+      Attr *ToAttr = FromAttr->clone(To->getASTContext());
+      ToAttr->setRange(Import(FromAttr->getRange()));
+      To->addAttr(ToAttr);
+    }
   }
   if (From->isUsed()) {
     To->setIsUsed();