1 // RUN: %clang_cc1 %s -fsyntax-only -verify -fblocks
2
3 void take(void*);
4
test(void)5 void test(void) {
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
main(int argc,char ** argv)26 int main(int argc, char** argv) {
27 ^(int argCount) {
28 argCount = 3;
29 }(argc);
30 }
31
f0(void)32 void f0(void) {
33 ^(int, double d, char) {}(1, 1.34, 'a'); // expected-warning {{omitting the parameter name in a function definition is a C23 extension}} \
34 // expected-warning {{omitting the parameter name in a function definition is a C23 extension}}
35 }
36
test4(void)37 void test4(void) {
38 int (^f)(void) = ^((x)) { }; // expected-error {{type specifier missing}} expected-error {{type-id cannot have a name}}
39 }
40
41 void test5_helper(void (^)(int, int[*]));
test5(void)42 void test5(void) {
43 test5_helper(^(int n, int array[n]) {});
44 }
45
46 // Reduced from a problem on platforms where va_list is an array.
47 struct tag {
48 int x;
49 };
50 typedef struct tag array_ty[1];
test6(void)51 void test6(void) {
52 void (^block)(array_ty) = ^(array_ty arr) { };
53 array_ty arr;
54 block(arr);
55 }
56