1 // RUN: %clang_cc1 -verify -fblocks -cl-std=CL2.0 %s 2 3 // OpenCL v2.0 s6.12.5 4 void f0(int (^const bl)()); 5 // All blocks declarations must be const qualified and initialized. 6 void f1() { 7 int (^bl1)() = ^() {return 1;}; 8 int (^const bl2)() = ^(){return 1;}; 9 f0(bl1); 10 f0(bl2); 11 bl1 = bl2; // expected-error{{invalid operands to binary expression ('int (^const)()' and 'int (^const)()')}} 12 int (^const bl3)(); // expected-error{{invalid block variable declaration - must be initialized}} 13 } 14 15 // A block with extern storage class is not allowed. 16 extern int (^bl)() = ^(){return 1;}; // expected-error{{invalid block variable declaration - using 'extern' storage class is disallowed}} 17 void f2() { 18 extern int (^bl)() = ^(){return 1;}; // expected-error{{invalid block variable declaration - using 'extern' storage class is disallowed}} 19 } 20 21 // A block cannot be the return value of a function. 22 typedef int (^bl_t)(void); 23 bl_t f3(bl_t bl); // expected-error{{declaring function return value of type 'bl_t' (aka 'int (^const)(void)') is not allowed}} 24 25 struct bl_s { 26 int (^bl)(void); // expected-error {{the 'int (^const)(void)' type cannot be used to declare a structure or union field}} 27 }; 28 29 void f4() { 30 __block int a = 10; // expected-error {{the __block storage type is not permitted}} 31 } 32 33 // A block with variadic argument is not allowed. 34 int (^bl)(int, ...) = ^int(int I, ...) { // expected-error {{invalid block prototype, variadic arguments are not allowed in OpenCL}} 35 return 0; 36 }; 37 38 // A block can't be used to declare an array 39 typedef int (^bl1_t)(int); 40 void f5(int i) { 41 bl1_t bl1 = ^(int i) {return 1;}; 42 bl1_t bl2 = ^(int i) {return 2;}; 43 bl1_t arr[] = {bl1, bl2}; // expected-error {{array of 'bl1_t' (aka 'int (^const)(int)') type is invalid in OpenCL}} 44 int tmp = i ? bl1(i) // expected-error {{block type cannot be used as expression in ternary expression in OpenCL}} 45 : bl2(i); // expected-error {{block type cannot be used as expression in ternary expression in OpenCL}} 46 } 47 // A block pointer type and all pointer operations are disallowed 48 void f6(bl1_t * bl_ptr) { // expected-error{{pointer to type '__generic bl1_t' (aka 'int (^const __generic)(int)') is invalid in OpenCL}} 49 bl1_t bl = ^(int i) {return 1;}; 50 bl1_t *p; // expected-error {{pointer to type '__generic bl1_t' (aka 'int (^const __generic)(int)') is invalid in OpenCL}} 51 *bl; // expected-error {{invalid argument type 'bl1_t' (aka 'int (^const)(int)') to unary expression}} 52 &bl; // expected-error {{invalid argument type 'bl1_t' (aka 'int (^const)(int)') to unary expression}} 53 } 54
