1 // RUN: %clang_cc1 -verify -Wunused -Wused-but-marked-unused -fsyntax-only %s
2 
3 namespace ns_unused { typedef int Int_unused __attribute__((unused)); }
4 namespace ns_not_unused { typedef int Int_not_unused; }
5 
6 template <typename T> class C;
7 template <> class __attribute__((unused)) C<int> {};
8 
f()9 void f() {
10   ns_not_unused::Int_not_unused i1; // expected-warning {{unused variable}}
11   ns_unused::Int_unused i0; // expected-warning {{'Int_unused' was marked unused but was used}}
12 
13   union __attribute__((unused)) { // expected-warning {{'' was marked unused but was used}}
14     int i;
15   };
16   (void) i;
17 
18   C<int>(); // expected-warning {{'C<int>' was marked unused but was used}}
19 }
20