1 // RUN: %check_clang_tidy -std=c++17-or-later %s misc-unused-using-decls %t -- --fix-notes -- -fno-delayed-template-parsing -isystem %S/Inputs/
2
3 namespace ns {
4
5 template <typename T> class Foo {
6 public:
7 Foo(T);
8 };
9 // Deduction guide (CTAD)
10 template <typename T> Foo(T t) -> Foo<T>;
11
12 template <typename T> class Bar {
13 public:
14 Bar(T);
15 };
16
17 template <typename T> class Unused {};
18
19 } // namespace ns
20
21 using ns::Bar;
22 using ns::Foo;
23 using ns::Unused; // Unused
24 // CHECK-MESSAGES: :[[@LINE-1]]:11: warning: using decl 'Unused' is unused
25 // CHECK-FIXES: {{^}}// Unused
26
f()27 void f() {
28 Foo(123);
29 Bar(1);
30 }
31