Preserve invalidity of typeof operands in C++.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111999 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 8 insertions, 1 deletions

diff --git a/lib/Parse/ParseExpr.cpp b/lib/Parse/ParseExpr.cpp
index c42fdecd7e..7020fa412e 100644
--- a/lib/Parse/ParseExpr.cpp
+++ b/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());
     }
   }
 
diff --git a/test/Parser/cxx-typeof.cpp b/test/Parser/cxx-typeof.cpp
index 7e891013e9..4c598e9517 100644
--- a/test/Parser/cxx-typeof.cpp
+++ b/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'}}
+};