56 lines · c
1// RUN: %clang_cc1 %s -fsyntax-only -verify -fblocks2 3void take(void*);4 5void 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 26int main(int argc, char** argv) {27 ^(int argCount) {28 argCount = 3;29 }(argc);30}31 32void 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 37void test4(void) {38 int (^f)(void) = ^((x)) { }; // expected-error {{type specifier missing}} expected-error {{type-id cannot have a name}}39}40 41void test5_helper(void (^)(int, int[*]));42void 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.47struct tag {48 int x;49};50typedef struct tag array_ty[1];51void test6(void) {52 void (^block)(array_ty) = ^(array_ty arr) { };53 array_ty arr;54 block(arr);55}56