Make functional-style casts emit correct messages, and fix a crash-on-invalid.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@77451 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/Sema.h b/lib/Sema/Sema.h
index 6737175..79ea3e1 100644
--- a/lib/Sema/Sema.h
+++ b/lib/Sema/Sema.h
@@ -3171,8 +3171,9 @@
                           bool ForceRValue = false);
 
   /// CheckCastTypes - Check type constraints for casting between types under
-  /// C semantics.
-  bool CheckCastTypes(SourceRange TyRange, QualType CastTy, Expr *&CastExpr);
+  /// C semantics, or forward to CXXCheckCStyleCast in C++.
+  bool CheckCastTypes(SourceRange TyRange, QualType CastTy, Expr *&CastExpr,
+                      bool FunctionalStyle = false);
 
   // CheckVectorCast - check type constraints for vectors. 
   // Since vectors are an extension, there are no C standard reference for this.
@@ -3189,7 +3190,8 @@
 
   /// CXXCheckCStyleCast - Check constraints of a C-style or function-style
   /// cast under C++ semantics.
-  bool CXXCheckCStyleCast(SourceRange R, QualType CastTy, Expr *&CastExpr);
+  bool CXXCheckCStyleCast(SourceRange R, QualType CastTy, Expr *&CastExpr,
+                          bool FunctionalStyle);
 
   /// CheckMessageArgumentTypes - Check types in an Obj-C message send. 
   /// \param Method - May be null.