block-args.c revision 9808b711aa2153e4fe9a627a2721fa5c3bbbdc97 
1// RUN: %clang_cc1 %s -fsyntax-only -verify -fblocks
2
3void take(void*);
4
5void 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
26int main(int argc, char** argv) {
27  ^(int argCount) {
28    argCount = 3;
29  }(argc);
30}
31
32// radar 7528255
33void f0() {
34  ^(int, double d, char) {}(1, 1.34, 'a'); // expected-error {{parameter name omitted}} \
35				 	   // expected-error {{parameter name omitted}}
36}
37
38// rdar://problem/8962770
39void test4() {
40  int (^f)() = ^((x)) { }; // expected-error {{expected ')'}} expected-warning {{type specifier missing}} expected-note {{to match this}}
41}
42
43// rdar://problem/9170609
44void test5_helper(void (^)(int, int[*]));
45void 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.
50struct tag {
51  int x;
52};
53typedef struct tag array_ty[1];
54void test6(void) {
55  void (^block)(array_ty) = ^(array_ty arr) { };
56  array_ty arr;
57  block(arr);
58}
59