1 files changed, 7 insertions, 5 deletions
diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp
index 82d28fa0827..13a77f15eb2 100644
--- a/clang/lib/Sema/SemaDecl.cpp
+++ b/clang/lib/Sema/SemaDecl.cpp
@@ -8897,11 +8897,13 @@ void Sema::ActOnUninitializedDecl(Decl *RealDecl,
     if (Var->isInvalidDecl())
       return;
 
-    if (RequireCompleteType(Var->getLocation(), 
-                            Context.getBaseElementType(Type),
-                            diag::err_typecheck_decl_incomplete_type)) {
-      Var->setInvalidDecl();
-      return;
+    if (!Var->hasAttr<AliasAttr>()) {
+      if (RequireCompleteType(Var->getLocation(),
+                              Context.getBaseElementType(Type),
+                              diag::err_typecheck_decl_incomplete_type)) {
+        Var->setInvalidDecl();
+        return;
+      }
     }
 
     // The variable can not have an abstract class type.