1 | // RUN: %clang_cc1 -fsyntax-only -verify -fblocks -Wno-objc-root-class -std=c++14 %s |
2 | @protocol NSObject; |
3 | |
4 | void bar(id(^)(void)); |
5 | void foo(id <NSObject>(^objectCreationBlock)(void)) { |
6 | return bar(objectCreationBlock); // OK |
7 | } |
8 | |
9 | void bar2(id(*)(void)); |
10 | void foo2(id <NSObject>(*objectCreationBlock)(void)) { |
11 | return bar2(objectCreationBlock); // expected-warning{{incompatible pointer types passing 'id<NSObject> (*)()' to parameter of type 'id (*)()'}} |
12 | } |
13 | |
14 | void bar3(id(*)()); // expected-note{{candidate function}} |
15 | void foo3(id (*objectCreationBlock)(int)) { |
16 | return bar3(objectCreationBlock); // expected-error{{no matching}} |
17 | } |
18 | |
19 | void bar4(id(^)()); // expected-note{{candidate function}} |
20 | void foo4(id (^objectCreationBlock)(int)) { |
21 | return bar4(objectCreationBlock); // expected-error{{no matching}} |
22 | } |
23 | |
24 | void foo5(id (^x)(int)) { |
25 | if (x) { } |
26 | } |
27 | |
28 | // <rdar://problem/6590445> |
29 | @interface Foo { |
30 | @private |
31 | void (^_block)(void); |
32 | } |
33 | - (void)bar; |
34 | @end |
35 | |
36 | namespace N { |
37 | class X { }; |
38 | void foo(X); |
39 | } |
40 | |
41 | @implementation Foo |
42 | - (void)bar { |
43 | _block(); |
44 | foo(N::X()); // okay |
45 | } |
46 | @end |
47 | |
48 | typedef signed char BOOL; |
49 | void foo6(void *block) { |
50 | void (^vb)(id obj, int idx, BOOL *stop) = (void (^)(id, int, BOOL *))block; |
51 | BOOL (^bb)(id obj, int idx, BOOL *stop) = (BOOL (^)(id, int, BOOL *))block; |
52 | } |
53 | |
54 | // <rdar://problem/8600419>: Require that the types of block |
55 | // parameters are complete. |
56 | namespace N1 { |
57 | template<class _T> class ptr; // expected-note{{template is declared here}} |
58 | |
59 | template<class _T> |
60 | class foo { |
61 | public: |
62 | void bar(void (^)(ptr<_T>)); |
63 | }; |
64 | |
65 | class X; |
66 | |
67 | void test2(); |
68 | |
69 | void test() |
70 | { |
71 | foo<X> f; |
72 | f.bar(^(ptr<X> _f) { // expected-error{{implicit instantiation of undefined template 'N1::ptr<N1::X>'}} |
73 | test2(); |
74 | }); |
75 | } |
76 | } |
77 | |
78 | // Make sure we successfully instantiate the copy constructor of a |
79 | // __block variable's type when the variable is captured by an escaping block. |
80 | namespace N2 { |
81 | template <int n> struct A { |
82 | A() {} |
83 | A(const A &other) { |
84 | int invalid[-n]; // expected-error 2 {{array with a negative size}} |
85 | } |
86 | void m() {} |
87 | }; |
88 | |
89 | typedef void (^BlockFnTy)(); |
90 | void func(BlockFnTy); |
91 | |
92 | void test1() { |
93 | __block A<1> x; // expected-note {{requested here}} |
94 | func(^{ x.m(); }); |
95 | } |
96 | |
97 | template <int n> void test2() { |
98 | __block A<n> x; // expected-note {{requested here}} |
99 | func(^{ x.m(); }); |
100 | } |
101 | template void test2<2>(); |
102 | } |
103 | |
104 | // Handle value-dependent block declaration references. |
105 | namespace N3 { |
106 | template<int N> struct X { }; |
107 | |
108 | template<int N> |
109 | void f() { |
110 | X<N> xN = ^() { return X<N>(); }(); |
111 | } |
112 | } |
113 | |
114 | // rdar://8979379 |
115 | |
116 | @interface A |
117 | @end |
118 | |
119 | @interface B : A |
120 | @end |
121 | |
122 | void f(int (^bl)(A* a)); // expected-note {{candidate function not viable: no known conversion from 'int (^)(B *)' to 'int (^)(A *)' for 1st argument}} |
123 | |
124 | void g() { |
125 | f(^(B* b) { return 0; }); // expected-error {{no matching function for call to 'f'}} |
126 | } |
127 | |
128 | namespace DependentReturn { |
129 | template<typename T> |
130 | void f(T t) { |
131 | (void)^(T u) { |
132 | if (t != u) |
133 | return t + u; |
134 | else |
135 | return; |
136 | }; |
137 | |
138 | (void)^(T u) { |
139 | if (t == u) |
140 | return; |
141 | else |
142 | return t + u; |
143 | }; |
144 | } |
145 | |
146 | struct X { }; |
147 | void operator+(X, X); |
148 | bool operator==(X, X); |
149 | bool operator!=(X, X); |
150 | |
151 | template void f<X>(X); |
152 | } |
153 | |
154 | namespace GenericLambdaCapture { |
155 | int test(int outerp) { |
156 | auto lambda =[&](auto p) { |
157 | return ^{ |
158 | return p + outerp; |
159 | }(); |
160 | }; |
161 | return lambda(1); |
162 | } |
163 | } |
164 | |
165 | namespace MoveBlockVariable { |
166 | struct B0 { |
167 | }; |
168 | |
169 | struct B1 { // expected-note 2 {{candidate constructor (the implicit}} |
170 | B1(B0&&); // expected-note {{candidate constructor not viable}} |
171 | }; |
172 | |
173 | B1 test_move() { |
174 | __block B0 b; |
175 | return b; // expected-error {{no viable conversion from returned value of type 'MoveBlockVariable::B0' to function return type 'MoveBlockVariable::B1'}} |
176 | } |
177 | } |
178 | |