1 | // RUN: %clang_cc1 -fsyntax-only -verify %s -Wmissing-noreturn -Wreturn-type |
2 | void f() __attribute__((noreturn)); |
3 | |
4 | template<typename T> void g(T) { |
5 | f(); |
6 | } |
7 | |
8 | template void g<int>(int); |
9 | |
10 | template<typename T> struct A { |
11 | void g() { |
12 | f(); |
13 | } |
14 | }; |
15 | |
16 | template struct A<int>; |
17 | |
18 | struct B { |
19 | template<typename T> void g(T) { |
20 | f(); |
21 | } |
22 | }; |
23 | |
24 | template void B::g<int>(int); |
25 | |
26 | // We don't want a warning here. |
27 | struct X { |
28 | virtual void g() { f(); } |
29 | }; |
30 | |
31 | namespace test1 { |
32 | bool condition(); |
33 | |
34 | // We don't want a warning here. |
35 | void foo() { |
36 | while (condition()) {} |
37 | } |
38 | } |
39 | |
40 | |
41 | // <rdar://problem/7880658> - This test case previously had a false "missing return" |
42 | // warning. |
43 | struct R7880658 { |
44 | R7880658 &operator++(); |
45 | bool operator==(const R7880658 &) const; |
46 | bool operator!=(const R7880658 &) const; |
47 | }; |
48 | |
49 | void f_R7880658(R7880658 f, R7880658 l) { // no-warning |
50 | for (; f != l; ++f) { |
51 | } |
52 | } |
53 | |
54 | namespace test2 { |
55 | |
56 | bool g(); |
57 | void *h() __attribute__((noreturn)); |
58 | void *j(); |
59 | |
60 | struct A { |
61 | void *f; |
62 | |
63 | A() : f(0) { } |
64 | A(int) : f(h()) { } // expected-warning {{function 'A' could be declared with attribute 'noreturn'}} |
65 | A(char) : f(j()) { } |
66 | A(bool b) : f(b ? h() : j()) { } |
67 | }; |
68 | } |
69 | |
70 | namespace test3 { |
71 | struct A { |
72 | ~A(); |
73 | }; |
74 | |
75 | struct B { |
76 | ~B() { } |
77 | |
78 | A a; |
79 | }; |
80 | |
81 | struct C : A { |
82 | ~C() { } |
83 | }; |
84 | } |
85 | |
86 | // <rdar://problem/8875247> - Properly handle CFGs with destructors. |
87 | struct rdar8875247 { |
88 | ~rdar8875247 (); |
89 | }; |
90 | void rdar8875247_aux(); |
91 | |
92 | int rdar8875247_test() { |
93 | rdar8875247 f; |
94 | } // expected-warning{{control reaches end of non-void function}} |
95 | |
96 | struct rdar8875247_B { |
97 | rdar8875247_B(); |
98 | ~rdar8875247_B(); |
99 | }; |
100 | |
101 | rdar8875247_B test_rdar8875247_B() { |
102 | rdar8875247_B f; |
103 | return f; |
104 | } // no-warning |
105 | |
106 | namespace PR10801 { |
107 | struct Foo { |
108 | void wibble() __attribute((__noreturn__)); |
109 | }; |
110 | |
111 | struct Bar { |
112 | void wibble(); |
113 | }; |
114 | |
115 | template <typename T> void thingy(T thing) { |
116 | thing.wibble(); |
117 | } |
118 | |
119 | void test() { |
120 | Foo f; |
121 | Bar b; |
122 | thingy(f); |
123 | thingy(b); |
124 | } |
125 | } |
126 | |