1 // RUN: %check_clang_tidy -std=c++20-or-later %s bugprone-forwarding-reference-overload %t
2 
3 template <typename T> constexpr bool just_true = true;
4 
5 class Test {
6 public:
7   template <typename T> Test(T &&n);
8   // CHECK-NOTES: :[[@LINE-1]]:25: warning: constructor accepting a forwarding reference can hide the copy and move constructors
9 
10   Test(const Test &rhs);
11   // CHECK-NOTES: :[[@LINE-1]]:3: note: copy constructor declared here
12 };
13 
14 class Test1 {
15 public:
16   // Guarded with requires expression.
17   template <typename T>
18   requires requires { just_true<T>; }
19   Test1(T &&n);
20 };
21 
22 template<typename T>
23 concept JustTrueConcept = requires { just_true<T>; };
24 
25 class Test2 {
26 public:
27   // Guarded with concept requirement.
28   template <JustTrueConcept T> Test2(T &&n);
29 };
30