decltype-pr66548.C: Reinstate correct version.

2019-05-22  Paolo Carlini  <paolo.carlini@oracle.com>

      * g++.dg/cpp0x/decltype-pr66548.C: Reinstate correct version.

From-SVN: r271507

gcc/testsuite/g++.dg/cpp0x/decltype-pr66548.C

+// PR c++/66548 - Invalid class member access expression in decltype
+//                sometimes accepted
+// { dg-do compile }
+// { dg-options "-ftrack-macro-expansion=0" }
+
+#if __cplusplus < 201103L
+# define decltype __typeof__
+#endif
+
+struct Meow {};
+
+void f ()
+{
+  decltype (Meow.purr ()) d;   // { dg-error "expected primary-expression" "pr89875" { xfail c++98_only } }
+  (void)&d;
+}
+
+void g ()
+{
+  decltype (Meow.purr);        // { dg-error "expected primary-expression" }
+}