1 // RUN: %clang_cc1 -fsyntax-only -verify -Wunused -Wunused-member-function %s
2
3 static void f1(); // expected-warning{{unused}}
4
5 namespace {
6 void f2(); // expected-warning{{unused}}
7
f3()8 void f3() { } // expected-warning{{unused}}
9
10 struct S {
m1__anon927bfc570111::S11 void m1() { } // expected-warning{{unused}}
12 void m2(); // expected-warning{{unused}}
13 void m3();
14 S(const S&);
15 void operator=(const S&);
16 };
17
18 template <typename T>
19 struct TS {
20 void m();
21 };
m()22 template <> void TS<int>::m() { } // expected-warning{{unused}}
23
24 template <typename T>
tf()25 void tf() { }
tf()26 template <> void tf<int>() { } // expected-warning{{unused}}
27
28 struct VS {
vm__anon927bfc570111::VS29 virtual void vm() { }
30 };
31
32 struct SVS : public VS {
vm__anon927bfc570111::SVS33 void vm() { }
34 };
35 }
36
m3()37 void S::m3() { } // expected-warning{{unused}}
38
f4()39 static inline void f4() { }
40 const unsigned int cx = 0;
41
42 static int x1; // expected-warning{{unused}}
43
44 namespace {
45 int x2; // expected-warning{{unused}}
46
47 struct S2 {
48 static int x; // expected-warning{{unused}}
49 };
50
51 template <typename T>
52 struct TS2 {
53 static int x;
54 };
55 template <> int TS2<int>::x; // expected-warning{{unused}}
56 }
57
58 namespace PR8841 {
59 // Ensure that friends of class templates are considered to have a dependent
60 // context and not marked unused.
61 namespace {
62 template <typename T> struct X {
operator ==(const X &,const X &)63 friend bool operator==(const X&, const X&) { return false; }
64 };
65 }
template_test(X<T> x)66 template <typename T> void template_test(X<T> x) {
67 (void)(x == x);
68 }
test()69 void test() {
70 X<int> x;
71 template_test(x);
72 }
73 }
74
75 namespace test4 {
76 namespace { struct A {}; }
77
78 void test(A a); // expected-warning {{unused function}}
79 extern "C" void test4(A a);
80 }
81
82 namespace rdar8733476 {
foo()83 static void foo() { } // expected-warning {{not needed and will not be emitted}}
84
85 template <int>
bar()86 void bar() {
87 foo();
88 }
89 }
90