1 // RUN: %clang_cc1 %s -fsyntax-only -verify -fblocks
2 
3 void take(void*);
4 
5 void test() {
6   take(^(int x){});
7   take(^(int x, int y){});
8   take(^(int x, int y){});
9   take(^(int x,      // expected-note {{previous declaration is here}}
10          int x){});  // expected-error {{redefinition of parameter 'x'}}
11 
12 
13   take(^(int x) { return x+1; });
14 
15   int (^CP)(int) = ^(int x) { return x*x; };
16   take(CP);
17 
18   int arg;
19   ^{return 1;}();
20   ^{return 2;}(arg); // expected-error {{too many arguments to block call}}
21   ^(void){return 3;}(1); // expected-error {{too many arguments to block call}}
22   ^(){return 4;}(arg); // expected-error {{too many arguments to block call}}
23   ^(int x, ...){return 5;}(arg, arg);   // Explicit varargs, ok.
24 }
25 
26 int main(int argc, char** argv) {
27   ^(int argCount) {
28     argCount = 3;
29   }(argc);
30 }
31 
32 // radar 7528255
33 void f0() {
34   ^(int, double d, char) {}(1, 1.34, 'a'); // expected-warning {{omitting the parameter name in a function definition is a C2x extension}} \
35                                            // expected-warning {{omitting the parameter name in a function definition is a C2x extension}}
36 }
37 
38 // rdar://problem/8962770
39 void test4() {
40   int (^f)() = ^((x)) { }; // expected-warning {{type specifier missing}} expected-error {{type-id cannot have a name}}
41 }
42 
43 // rdar://problem/9170609
44 void test5_helper(void (^)(int, int[*]));
45 void test5(void) {
46   test5_helper(^(int n, int array[n]) {});
47 }
48 
49 // Reduced from a problem on platforms where va_list is an array.
50 struct tag {
51   int x;
52 };
53 typedef struct tag array_ty[1];
54 void test6(void) {
55   void (^block)(array_ty) = ^(array_ty arr) { };
56   array_ty arr;
57   block(arr);
58 }
59