1 // RUN: %clang_cc1 %s -verify -fsyntax-only
2
3 __attribute__((callback())) void no_callee(void (*callback)(void)); // expected-error {{'callback' attribute specifies no callback callee}}
4
too_many_args_1(void (* callback)(void))5 __attribute__((callback(1, 1))) void too_many_args_1(void (*callback)(void)) {} // expected-error {{'callback' attribute takes one argument}}
6 __attribute__((callback(1, -1))) void too_many_args_2(double (*callback)(void)); // expected-error {{'callback' attribute takes one argument}}
7 __attribute__((callback(1, 2, 2))) void too_many_args_3(void (*callback)(int), int); // expected-error {{'callback' attribute requires exactly 2 arguments}}
8
9 __attribute__((callback(1, 2))) void too_few_args_1(void (*callback)(int, int), int); // expected-error {{'callback' attribute takes one argument}}
10 __attribute__((callback(1))) void too_few_args_2(int (*callback)(int)); // expected-error {{'callback' attribute takes no arguments}}
too_few_args_3(void (* callback)(int,int))11 __attribute__((callback(1, -1))) void too_few_args_3(void (*callback)(int, int)) {} // expected-error {{'callback' attribute takes one argument}}
12
13 __attribute__((callback(-1))) void oob_args_1(void (*callback)(void)); // expected-error {{'callback' attribute specifies invalid callback callee}}
oob_args_2(int * (* callback)(void))14 __attribute__((callback(2))) void oob_args_2(int *(*callback)(void)) {} // expected-error {{'callback' attribute parameter 1 is out of bounds}}
15 __attribute__((callback(1, 3))) void oob_args_3(short (*callback)(int), int); // expected-error {{'callback' attribute parameter 2 is out of bounds}}
16 __attribute__((callback(-2, 2))) void oob_args_4(void *(*callback)(int), int); // expected-error {{'callback' attribute parameter 1 is out of bounds}}
17 __attribute__((callback(1, -2))) void oob_args_5(void *(*callback)(int), int); // expected-error {{'callback' attribute parameter 2 is out of bounds}}
18 __attribute__((callback(1, 2))) void oob_args_6(void *(*callback)(int), ...); // expected-error {{'callback' attribute parameter 2 is out of bounds}}
19
20 __attribute__((callback(1))) __attribute__((callback(1))) void multiple_cb_1(void (*callback)(void)); // expected-error {{multiple 'callback' attributes specified}}
21 __attribute__((callback(1))) __attribute__((callback(2))) void multiple_cb_2(void (*callback1)(void), void (*callback2)(void)); // expected-error {{multiple 'callback' attributes specified}}
22
23 #ifdef HAS_THIS
24 __attribute__((callback(0))) void oob_args_0(void (*callback)(void)); // expected-error {{'callback' attribute specifies invalid callback callee}}
25 #else
26 __attribute__((callback(0))) void oob_args_0(void (*callback)(void)); // expected-error {{'callback' argument at position 1 references unavailable implicit 'this'}}
27 __attribute__((callback(1, 0))) void no_this_1(void *(*callback)(void *)); // expected-error {{'callback' argument at position 2 references unavailable implicit 'this'}}
28 __attribute__((callback(1, 0))) void no_this_2(void *(*callback)(int, void *)); // expected-error {{'callback' argument at position 2 references unavailable implicit 'this'}}
29 #endif
30
31 // We could allow the following declarations if we at some point need to:
32
vararg_cb_1(void (* callback)(int,...))33 __attribute__((callback(1, -1))) void vararg_cb_1(void (*callback)(int, ...)) {} // expected-error {{'callback' attribute callee may not be variadic}}
34 __attribute__((callback(1, 1))) void vararg_cb_2(void (*callback)(int, ...), int a); // expected-error {{'callback' attribute callee may not be variadic}}
35
varargs_1(void (* callback)(int,...),int a,float b,double c)36 __attribute__((callback(1, -1, 1, 2, 3, 4, -1))) void varargs_1(void (*callback)(int, ...), int a, float b, double c) {} // expected-error {{'callback' attribute requires exactly 6 arguments}}
37 __attribute__((callback(1, -1, 4, 2, 3, 4, -1))) void varargs_2(void (*callback)(void *, double, int, ...), int a, float b, double c); // expected-error {{'callback' attribute requires exactly 6 arguments}}
38
self_arg_1(void (* callback)(int,...))39 __attribute__((callback(1, -1, 1))) void self_arg_1(void (*callback)(int, ...)) {} // expected-error {{'callback' attribute requires exactly 2 arguments}}
40 __attribute__((callback(1, -1, 1, -1, -1, 1))) void self_arg_2(void (*callback)(int, ...)); // expected-error {{'callback' attribute requires exactly 5 arguments}}
41
unknown_name1(void (* callback)(void))42 __attribute__((callback(cb))) void unknown_name1(void (*callback)(void)) {} // expected-error {{'callback' attribute argument 'cb' is not a known function parameter}}
unknown_name2(void (* cb)(int),int a)43 __attribute__((callback(cb, ab))) void unknown_name2(void (*cb)(int), int a) {} // expected-error {{'callback' attribute argument 'ab' is not a known function parameter}}
44
too_many_args_1b(void (* callback)(void))45 __attribute__((callback(callback, 1))) void too_many_args_1b(void (*callback)(void)) {} // expected-error {{'callback' attribute takes one argument}}
46 __attribute__((callback(callback, __))) void too_many_args_2b(double (*callback)(void)); // expected-error {{'callback' attribute takes one argument}}
47 __attribute__((callback(callback, 2, 2))) void too_many_args_3b(void (*callback)(int), int); // expected-error {{'callback' attribute requires exactly 2 arguments}}
48
49 __attribute__((callback(callback, a))) void too_few_args_1b(void (*callback)(int, int), int a); // expected-error {{'callback' attribute takes one argument}}
50 __attribute__((callback(callback))) void too_few_args_2b(int (*callback)(int)); // expected-error {{'callback' attribute takes no arguments}}
too_few_args_3b(void (* callback)(int,int))51 __attribute__((callback(callback, __))) void too_few_args_3b(void (*callback)(int, int)) {} // expected-error {{'callback' attribute takes one argument}}
52
53 __attribute__((callback(__))) void oob_args_1b(void (*callback)(void)); // expected-error {{'callback' attribute specifies invalid callback callee}}
54
55 __attribute__((callback(callback))) __attribute__((callback(callback))) void multiple_cb_1b(void (*callback)(void)); // expected-error {{multiple 'callback' attributes specified}}
56 __attribute__((callback(1))) __attribute__((callback(callback2))) void multiple_cb_2b(void (*callback1)(void), void (*callback2)(void)); // expected-error {{multiple 'callback' attributes specified}}
57
58 #ifdef HAS_THIS
59 __attribute__((callback(this))) void oob_args_0b(void (*callback)(void)); // expected-error {{'callback' attribute specifies invalid callback callee}}
60 #else
61 __attribute__((callback(this))) void oob_args_0b(void (*callback)(void)); // expected-error {{'callback' argument at position 1 references unavailable implicit 'this'}}
62 __attribute__((callback(1, this))) void no_this_1b(void *(*callback)(void *)); // expected-error {{'callback' argument at position 2 references unavailable implicit 'this'}}
63 __attribute__((callback(1, this))) void no_this_2b(void *(*callback)(int, void *)); // expected-error {{'callback' argument at position 2 references unavailable implicit 'this'}}
64 #endif
65
66 // We could allow the following declarations if we at some point need to:
67
vararg_cb_1b(void (* callback)(int,...))68 __attribute__((callback(callback, __))) void vararg_cb_1b(void (*callback)(int, ...)) {} // expected-error {{'callback' attribute callee may not be variadic}}
69 __attribute__((callback(1, a))) void vararg_cb_2b(void (*callback)(int, ...), int a); // expected-error {{'callback' attribute callee may not be variadic}}
70
varargs_1b(void (* callback)(int,...),int a,float b,double c)71 __attribute__((callback(callback, __, callback, a, b, c, __))) void varargs_1b(void (*callback)(int, ...), int a, float b, double c) {} // expected-error {{'callback' attribute requires exactly 6 arguments}}
72 __attribute__((callback(1, __, c, a, b, c, -1))) void varargs_2b(void (*callback)(void *, double, int, ...), int a, float b, double c); // expected-error {{'callback' attribute requires exactly 6 arguments}}
73
self_arg_1b(void (* callback)(int,...))74 __attribute__((callback(1, __, callback))) void self_arg_1b(void (*callback)(int, ...)) {} // expected-error {{'callback' attribute requires exactly 2 arguments}}
75 __attribute__((callback(callback, __, callback, __, __, callback))) void self_arg_2b(void (*callback)(int, ...)); // expected-error {{'callback' attribute requires exactly 5 arguments}}
76