Provide an Objective C mangling for wchar_t. Patch by Nico Weber!

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@105818 91177308-0d34-0410-b5e6-96231b3b80d8

lib/AST/ASTContext.cpp

@@ -3477,6 +3477,7 @@ static char ObjCEncodingForPrimitiveKind(const ASTContext *C, QualType T) {
     case BuiltinType::Char_S:
     case BuiltinType::SChar:      return 'c';
     case BuiltinType::Short:      return 's';
+    case BuiltinType::WChar:
     case BuiltinType::Int:        return 'i';
     case BuiltinType::Long:
       return

test/SemaTemplate/instantiate-objc-1.mm

@@ -45,3 +45,4 @@ template <typename T> struct EncodeTest {
 
 template struct EncodeTest<int>;
 template struct EncodeTest<double>;
+template struct EncodeTest<wchar_t>;