1// RUN: %clang_cc1 -fsyntax-only -Wused-but-marked-unused -Wunused-function -Wunneeded-internal-declaration -verify %s
2// RUN: %clang_cc1 -fsyntax-only -verify -Wunused %s
3// RUN: %clang_cc1 -fsyntax-only -verify -Wall %s
4
5void foo() {}
6static void f2() {}
7static void f1() {f2();} // expected-warning{{unused}}
8
9static int f0() { return 17; } // expected-warning{{not needed and will not be emitted}}
10int x = sizeof(f0());
11
12static void f3();
13extern void f3() { } // expected-warning{{unused}}
14
15inline static void f4();
16void f4() { } // expected-warning{{unused}}
17
18static void __attribute__((used)) f5() {}
19static void f6();
20static void __attribute__((used)) f6();
21static void f6() {};
22
23static void f7(void);
24void f8(void(*a0)(void));
25void f9(void) { f8(f7); }
26static void f7(void) {}
27
28__attribute__((unused)) static void bar(void);
29void bar(void) { }
30
31__attribute__((constructor)) static void bar2(void);
32void bar2(void) { }
33
34__attribute__((destructor)) static void bar3(void);
35void bar3(void) { }
36
37static void f10(void); // expected-warning{{unused}}
38static void f10(void);
39
40static void f11(void);
41static void f11(void) { }  // expected-warning{{unused}}
42
43static void f12(void) { }  // expected-warning{{unused}}
44static void f12(void);
45
46// PR7923
47static void unused(void) { unused(); }  // expected-warning{{not needed and will not be emitted}}
48
49// rdar://8728293
50static void cleanupMalloc(char * const * const allocation) { }
51void f13(void) {
52  char * const __attribute__((cleanup(cleanupMalloc))) a;
53  (void)a;
54}
55
56// rdar://12233989
57extern void a(void) __attribute__((unused));
58extern void b(void) __attribute__((unused));
59
60void b(void)
61{
62}
63void a(void)
64{
65  b();
66}
67