20 lines · cpp
1// RUN: %clang_cc1 -verify -Wunused -Wused-but-marked-unused -fsyntax-only %s2 3namespace ns_unused { typedef int Int_unused __attribute__((unused)); }4namespace ns_not_unused { typedef int Int_not_unused; }5 6template <typename T> class C;7template <> class __attribute__((unused)) C<int> {};8 9void 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