1 // RUN: %clang_cc1 -fsyntax-only -verify -Wc++11-compat -std=c++98 %s 2 3 int& a(); 4 f()5 void f() { 6 decltype(a()) c; // expected-warning {{'decltype' is a keyword in C++11}} expected-error {{use of undeclared identifier 'decltype'}} 7 } 8