Give string literals const element typesin C++, and cope with the deprecated C++ conversion from a string literal to a pointer-to-non-const-character

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@56137 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/Sema.h b/lib/Sema/Sema.h
index f45e49f..e562547 100644
--- a/lib/Sema/Sema.h
+++ b/lib/Sema/Sema.h
@@ -890,6 +890,8 @@
   // blcok pointer types.
   AssignConvertType CheckBlockPointerTypesForAssignment(QualType lhsType, 
                                                         QualType rhsType);
+
+  bool IsStringLiteralToNonConstPointerConversion(Expr *From, QualType ToType);
   
   /// the following "Check" methods will return a valid/converted QualType
   /// or a null QualType (indicating an error diagnostic was issued).