diff --git a/lib/CodeGen/CodeGenModule.cpp b/lib/CodeGen/CodeGenModule.cpp
index d237598..2ce22d8 100644
--- a/lib/CodeGen/CodeGenModule.cpp
+++ b/lib/CodeGen/CodeGenModule.cpp
@@ -240,7 +240,7 @@
   }
                              
   if (!Features.Exceptions)
-    F->addAttribute(0, llvm::Attribute::NoUnwind);  
+    F->addAttribute(~0, llvm::Attribute::NoUnwind);  
 }
 
 void CodeGenModule::SetMethodAttributes(const ObjCMethodDecl *MD,