1 | // RUN: %clang_cc1 -fsyntax-only -verify -Wno-objc-root-class %s |
2 | @interface Foo |
3 | @end |
4 | |
5 | @implementation Foo |
6 | |
7 | void func(id); |
8 | |
9 | + zone { |
10 | func(self); |
11 | return self; |
12 | } |
13 | @end |
14 | |
15 | @protocol P0 |
16 | @end |
17 | |
18 | @protocol P1 |
19 | @end |
20 | |
21 | @interface A <P0> |
22 | @end |
23 | |
24 | @interface B : A |
25 | @end |
26 | |
27 | @interface C <P1> |
28 | @end |
29 | |
30 | int& f(A*); // expected-note {{candidate}} |
31 | float& f(B*); // expected-note {{candidate}} |
32 | void g(A*); |
33 | |
34 | int& h(A*); |
35 | float& h(id); |
36 | |
37 | void test0(A* a, B* b, id val) { |
38 | int& i1 = f(a); |
39 | float& f1 = f(b); |
40 | |
41 | // GCC succeeds here, which is clearly ridiculous. |
42 | float& f2 = f(val); // expected-error {{ambiguous}} |
43 | |
44 | g(a); |
45 | g(b); |
46 | g(val); |
47 | int& i2 = h(a); |
48 | float& f3 = h(val); |
49 | |
50 | int& i3 = h(b); |
51 | } |
52 | |
53 | void test1(A* a) { |
54 | B* b = a; // expected-warning{{incompatible pointer types initializing 'B *' with an expression of type 'A *'}} |
55 | B *c; c = a; // expected-warning{{incompatible pointer types assigning to 'B *' from 'A *'}} |
56 | } |
57 | |
58 | void test2(A** ap) { |
59 | B** bp = ap; // expected-warning{{incompatible pointer types initializing 'B **' with an expression of type 'A **'}} |
60 | bp = ap; // expected-warning{{incompatible pointer types assigning to 'B **' from 'A **'}} |
61 | } |
62 | |
63 | int& cv(A*); |
64 | float& cv(const A*); |
65 | |
66 | int& cv2(void*); |
67 | float& cv2(const void*); |
68 | |
69 | void cv_test(A* a, B* b, const A* ac, const B* bc) { |
70 | int &i1 = cv(a); |
71 | int &i2 = cv(b); |
72 | float &f1 = cv(ac); |
73 | float &f2 = cv(bc); |
74 | int& i3 = cv2(a); |
75 | float& f3 = cv2(ac); |
76 | } |
77 | |
78 | int& qualid(id<P0>); |
79 | float& qualid(id<P1>); |
80 | |
81 | void qualid_test(A *a, B *b, C *c) { |
82 | int& i1 = qualid(a); |
83 | int& i2 = qualid(b); |
84 | |
85 | float& f1 = qualid(c); |
86 | |
87 | id<P0> p1 = 0; |
88 | p1 = 0; |
89 | } |
90 | |
91 | |
92 | @class NSException; |
93 | typedef struct { |
94 | void (*throw_exc)(id); |
95 | } |
96 | objc_exception_functions_t; |
97 | |
98 | void (*_NSExceptionRaiser(void))(NSException *) { |
99 | objc_exception_functions_t exc_funcs; |
100 | return exc_funcs.throw_exc; // expected-warning{{incompatible pointer types returning 'void (*)(id)' from a function with result type 'void (*)(NSException *)'}} |
101 | } |
102 | |
103 | namespace test5 { |
104 | void foo(bool); |
105 | void foo(void *); |
106 | |
107 | void test(id p) { |
108 | foo(p); |
109 | } |
110 | } |
111 | |
112 | // rdar://problem/8592139 |
113 | namespace test6 { |
114 | void foo(id); |
115 | void foo(A*) __attribute__((unavailable)); // expected-note {{marked unavailable here}} |
116 | |
117 | void test(B *b) { |
118 | foo(b); // expected-error {{'foo' is unavailable}} |
119 | } |
120 | } |
121 | |
122 | namespace rdar8714395 { |
123 | int &f(const void*); |
124 | float &f(const Foo*); |
125 | |
126 | int &f2(const void*); |
127 | float &f2(Foo const* const *); |
128 | |
129 | int &f3(const void*); |
130 | float &f3(Foo const**); |
131 | |
132 | void g(Foo *p) { |
133 | float &fr = f(p); |
134 | float &fr2 = f2(&p); |
135 | int &ir = f3(&p); |
136 | } |
137 | |
138 | |
139 | } |
140 | |
141 | namespace rdar8734046 { |
142 | void f1(id); |
143 | void f2(id<P0>); |
144 | void g(const A *a) { |
145 | f1(a); |
146 | f2(a); |
147 | } |
148 | } |
149 | |
150 | namespace PR9735 { |
151 | int &f3(const A*); |
152 | float &f3(const void*); |
153 | |
154 | void test_f(B* b, const B* bc) { |
155 | int &ir1 = f3(b); |
156 | int &ir2 = f3(bc); |
157 | } |
158 | } |
159 | |
160 | @interface D : B |
161 | @end |
162 | |
163 | namespace rdar9327203 { |
164 | int &f(void* const&, int); |
165 | float &f(void* const&, long); |
166 | |
167 | void g(id x) { |
168 | int &fr = (f)(x, 0); |
169 | } |
170 | } |
171 | |
172 | namespace class_id { |
173 | // it's okay to overload Class with id. |
174 | void f(Class) { } |
175 | void f(id) { } |
176 | } |
177 | |
178 | @interface NSDictionary<__covariant KeyType, __covariant ObjectType> : A |
179 | @end |
180 | |
181 | @interface NSMutableDictionary<KeyType, ObjectType> : NSDictionary<KeyType, ObjectType> |
182 | @end |
183 | |
184 | namespace rdar20124827 { |
185 | |
186 | int overload(NSDictionary *) { return 1; } |
187 | |
188 | __attribute__((deprecated)) // expected-note {{'overload' has been explicitly marked deprecated here}} |
189 | int overload(NSMutableDictionary *) { return 0; } |
190 | |
191 | __attribute__((deprecated)) |
192 | void overload2(NSDictionary *); // expected-note {{candidate function}} |
193 | void overload2(NSDictionary<A *, A *> *); // expected-note {{candidate function}} |
194 | |
195 | void test(NSDictionary *d1, NSDictionary<A *, A *> *d2, NSMutableDictionary<A *, A *> *m1) { |
196 | overload(d1); |
197 | overload(d2); // no warning |
198 | overload(m1); // expected-warning {{'overload' is deprecated}} |
199 | overload2(d2); // no warning |
200 | overload2(m1); // expected-error {{call to 'overload2' is ambiguous}} |
201 | } |
202 | |
203 | } |
204 | |