1 // RUN: %clang_cc1 -fsyntax-only %s -verify -fblocks
2 
3 void I( void (^)(void));
4 void (^noop)(void);
5 
6 void nothing();
7 int printf(const char*, ...);
8 
9 typedef void (^T) (void);
10 
11 void takeblock(T);
12 int takeintint(int (^C)(int)) { return C(4); }
13 
14 T somefunction() {
15   if (^{ })
16     nothing();
17 
18   noop = ^{};
19 
20   noop = ^{printf("\nClosure\n"); };
21 
22   I(^{ });
23 
24   return ^{printf("\nClosure\n"); };
25 }
26 void test2() {
27   int x = 4;
28 
29   takeblock(^{ printf("%d\n", x); });
30 
31   while (1) {
32     takeblock(^{
33         break;  // expected-error {{'break' statement not in loop or switch statement}}
34         continue; // expected-error {{'continue' statement not in loop statement}}
next_j<T: Rng>(mut j: usize, rng: &mut T, window: &Window) -> usize35         while(1) break;  // ok
36         goto foo; // expected-error {{use of undeclared label 'foo'}}
37         a: goto a;       // ok
38       });
39     break;
40   }
41 
42   foo:
43   takeblock(^{ x = 4; });  // expected-error {{variable is not assignable (missing __block type specifier)}}
44   __block y = 7;    // expected-warning {{type specifier missing, defaults to 'int'}}
45   takeblock(^{ y = 8; });
46 }
47 
48 
49 void (^test3())(void) {
50   return ^{};
51 }
52 
53 void test4() {
54   void (^noop)(void) = ^{};
55   void (*noop2)() = 0;
main()56 }
57 
58 void myfunc(int (^block)(int)) {}
59 
60 void myfunc3(const int *x);
61 
62 void test5() {
63   int a;
64 
65   myfunc(^(int abcd) {
66       myfunc3(&a);
67       return 1;
68     });
69 }
70 
71 void *X;
72 
73 void test_arguments() {
74   int y;
75   int (^c)(char);
76   (1 ? c : 0)('x');
77   (1 ? 0 : c)('x');
78 
79   (1 ? c : c)('x');
80 }
81 
82 static int global_x = 10;
83 void (^global_block)(void) = ^{ printf("global x is %d\n", global_x); };
84 
85 typedef void (^void_block_t)(void);
86 
87 static const void_block_t myBlock = ^{ };
88 
89 static const void_block_t myBlock2 = ^ void(void) { };
90