diff --git a/lib/Sema/Sema.h b/lib/Sema/Sema.h
index 743c46b..736a496 100644
--- a/lib/Sema/Sema.h
+++ b/lib/Sema/Sema.h
@@ -2451,12 +2451,12 @@
                                  SourceLocation LParenLoc,
                                  SourceLocation RParenLoc);
 
-  /// ActOnPragmaPack - Called on well formed #pragma weak ident.
+  /// ActOnPragmaWeakID - Called on well formed #pragma weak ident.
   virtual void ActOnPragmaWeakID(IdentifierInfo* WeakName,
                                  SourceLocation PragmaLoc,
                                  SourceLocation WeakNameLoc);
 
-  /// ActOnPragmaPack - Called on well formed #pragma weak ident = ident.
+  /// ActOnPragmaWeakAlias - Called on well formed #pragma weak ident = ident.
   virtual void ActOnPragmaWeakAlias(IdentifierInfo* WeakName,
                                     IdentifierInfo* AliasName,
                                     SourceLocation PragmaLoc,
diff --git a/lib/Sema/SemaDecl.cpp b/lib/Sema/SemaDecl.cpp
index 18636a4..51b5449 100644
--- a/lib/Sema/SemaDecl.cpp
+++ b/lib/Sema/SemaDecl.cpp
@@ -4439,6 +4439,7 @@
   // FIXME: This implementation is an ugly hack!
   if (PrevDecl) {
     PrevDecl->addAttr(::new (Context) AliasAttr(AliasName->getName()));
+    PrevDecl->addAttr(::new (Context) WeakAttr());
     return;
   }
   Diag(PragmaLoc, diag::err_unsupported_pragma_weak);