1 // RUN: %clang_cc1 -verify -fblocks -cl-std=CL2.0 %s
5 // All blocks declarations must be const qualified and initialized.
7 int (^bl1)() = ^() {return 1;}; // expected-error{{invalid block variable declaration - must be const qualified}}
8 int (^const bl2)(); // expected-error{{invalid block variable declaration - must be initialized}}
9 int (^const bl3)() = ^(){return 1;};
12 // A block with extern storage class is not allowed.
13 extern int (^const bl)() = ^(){return 1;}; // expected-error{{invalid block variable declaration - using 'extern' storage class is disallowed}}
15 extern int (^const bl)() = ^(){return 1;}; // expected-error{{invalid block variable declaration - using 'extern' storage class is disallowed}}
18 // A block cannot be the return value of a function.
19 typedef int (^const bl_t)(void);
20 bl_t f3(bl_t bl); // expected-error{{declaring function return value of type 'bl_t' (aka 'int (^const)(void)') is not allowed}}
23 int (^const bl)(void); // expected-error {{the 'int (^const)(void)' type cannot be used to declare a structure or union field}}
27 __block int a = 10; // expected-error {{the __block storage type is not permitted}}
30 // A block with variadic argument is not allowed.
31 int (^const bl)(int, ...) = ^int(int I, ...) { // expected-error {{invalid block prototype, variadic arguments are not allowed in OpenCL}}
35 // A block can't be used to declare an array
36 typedef int (^const bl1_t)(int);
38 bl1_t bl1 = ^(int i) {return 1;};
39 bl1_t bl2 = ^(int i) {return 2;};
40 bl1_t arr[] = {bl1, bl2}; // expected-error {{array of 'bl1_t' (aka 'int (^const)(int)') type is invalid in OpenCL}}
41 int tmp = i ? bl1(i) // expected-error {{block type cannot be used as expression in ternary expression in OpenCL}}
42 : bl2(i); // expected-error {{block type cannot be used as expression in ternary expression in OpenCL}}
45 void f6(bl1_t * bl_ptr) {
46 bl1_t bl = ^(int i) {return 1;};
47 bl1_t *p = &bl; // expected-error {{invalid argument type 'bl1_t' (aka 'int (^const)(int)') to unary expression}}
48 bl = *bl_ptr; // expected-error {{dereferencing pointer of type '__generic bl1_t *' (aka 'int (^const __generic *)(int)') is not allowed in OpenCL}}