implement rdar://6780761, making sema reject some code that otherwise
crashes codegen.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68891 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/Sema.h b/lib/Sema/Sema.h
index 8138379..5018833 100644
--- a/lib/Sema/Sema.h
+++ b/lib/Sema/Sema.h
@@ -2210,7 +2210,7 @@
   
   // DefaultVariadicArgumentPromotion - Like DefaultArgumentPromotion, but
   // will warn if the resulting type is not a POD type.
-  void DefaultVariadicArgumentPromotion(Expr *&Expr, VariadicCallType CT);
+  bool DefaultVariadicArgumentPromotion(Expr *&Expr, VariadicCallType CT);
   
   // UsualArithmeticConversions - performs the UsualUnaryConversions on it's
   // operands and then handles various conversions that are common to binary