Preserve invalidity of typeof operands in C++.

llvm-svn: 111999

clang/lib/Parse/ParseExpr.cpp

@@ -1166,7 +1166,8 @@ Parser::ParseExprAfterTypeofSizeofAlignof(const Token &OpTok,
       // sizeof/alignof or in C++. Therefore, the parenthesized expression is
       // the start of a unary-expression, but doesn't include any postfix 
       // pieces. Parse these now if present.
-      Operand = ParsePostfixExpressionSuffix(Operand.take());
+      if (!Operand.isInvalid())
+        Operand = ParsePostfixExpressionSuffix(Operand.get());
     }
   }
 

clang/test/Parser/cxx-typeof.cpp

@@ -5,3 +5,9 @@ static void test() {
   int x;
   typeof pi[x] y; 
 }
+
+// Part of rdar://problem/8347416;  from the gcc test suite.
+struct S {
+  int i;
+  __typeof(S::i) foo(); // expected-error {{invalid use of nonstatic data member 'i'}}
+};