a2d983cffb
We were previously telling the user how many arguments were passed to the attribute rather than saying how many arguments were expected to be passed to the callback function. This rewords the diagnostic to hopefully be a bit more clear. Fixes #47451
76 lines
9.8 KiB
C
76 lines
9.8 KiB
C
// RUN: %clang_cc1 %s -verify -fsyntax-only
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__attribute__((callback())) void no_callee(void (*callback)(void)); // expected-error {{'callback' attribute specifies no callback callee}}
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__attribute__((callback(1, 1))) void too_many_args_1(void (*callback)(void)) {} // expected-error-re {{'callback' attribute references function of type 'void ({{(void)?}})' which expects 0 arguments but attribute specifies 1 parameter index argument}}
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__attribute__((callback(1, -1))) void too_many_args_2(double (*callback)(void)); // expected-error-re {{'callback' attribute references function of type 'double ({{(void)?}})' which expects 0 arguments but attribute specifies 1 parameter index argument}}
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__attribute__((callback(1, 2, 2))) void too_many_args_3(void (*callback)(int), int); // expected-error {{'callback' attribute references function of type 'void (int)' which expects 1 argument but attribute specifies 2 parameter index arguments}}
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__attribute__((callback(1, 2))) void too_few_args_1(void (*callback)(int, int), int); // expected-error {{'callback' attribute references function of type 'void (int, int)' which expects 2 arguments but attribute specifies 1 parameter index argument}}
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__attribute__((callback(1))) void too_few_args_2(int (*callback)(int)); // expected-error {{'callback' attribute references function of type 'int (int)' which expects 1 argument but attribute specifies 0 parameter index arguments}}
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__attribute__((callback(1, -1))) void too_few_args_3(void (*callback)(int, int)) {} // expected-error {{'callback' attribute references function of type 'void (int, int)' which expects 2 arguments but attribute specifies 1 parameter index argument}}
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__attribute__((callback(-1))) void oob_args_1(void (*callback)(void)); // expected-error {{'callback' attribute specifies invalid callback callee}}
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__attribute__((callback(2))) void oob_args_2(int *(*callback)(void)) {} // expected-error {{'callback' attribute parameter 1 is out of bounds}}
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__attribute__((callback(1, 3))) void oob_args_3(short (*callback)(int), int); // expected-error {{'callback' attribute parameter 2 is out of bounds}}
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__attribute__((callback(-2, 2))) void oob_args_4(void *(*callback)(int), int); // expected-error {{'callback' attribute parameter 1 is out of bounds}}
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__attribute__((callback(1, -2))) void oob_args_5(void *(*callback)(int), int); // expected-error {{'callback' attribute parameter 2 is out of bounds}}
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__attribute__((callback(1, 2))) void oob_args_6(void *(*callback)(int), ...); // expected-error {{'callback' attribute parameter 2 is out of bounds}}
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__attribute__((callback(1))) __attribute__((callback(1))) void multiple_cb_1(void (*callback)(void)); // expected-error {{multiple 'callback' attributes specified}}
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__attribute__((callback(1))) __attribute__((callback(2))) void multiple_cb_2(void (*callback1)(void), void (*callback2)(void)); // expected-error {{multiple 'callback' attributes specified}}
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#ifdef HAS_THIS
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__attribute__((callback(0))) void oob_args_0(void (*callback)(void)); // expected-error {{'callback' attribute specifies invalid callback callee}}
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#else
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__attribute__((callback(0))) void oob_args_0(void (*callback)(void)); // expected-error {{'callback' argument at position 1 references unavailable implicit 'this'}}
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__attribute__((callback(1, 0))) void no_this_1(void *(*callback)(void *)); // expected-error {{'callback' argument at position 2 references unavailable implicit 'this'}}
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__attribute__((callback(1, 0))) void no_this_2(void *(*callback)(int, void *)); // expected-error {{'callback' argument at position 2 references unavailable implicit 'this'}}
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#endif
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// We could allow the following declarations if we at some point need to:
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__attribute__((callback(1, -1))) void vararg_cb_1(void (*callback)(int, ...)) {} // expected-error {{'callback' attribute callee may not be variadic}}
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__attribute__((callback(1, 1))) void vararg_cb_2(void (*callback)(int, ...), int a); // expected-error {{'callback' attribute callee may not be variadic}}
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__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 references function of type 'void (int, ...)' which expects 1 argument but attribute specifies 6 parameter index arguments}}
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__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 references function of type 'void (void *, double, int, ...)' which expects 3 arguments but attribute specifies 6 parameter index arguments}}
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__attribute__((callback(1, -1, 1))) void self_arg_1(void (*callback)(int, ...)) {} // expected-error {{'callback' attribute references function of type 'void (int, ...)' which expects 1 argument but attribute specifies 2 parameter index arguments}}
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__attribute__((callback(1, -1, 1, -1, -1, 1))) void self_arg_2(void (*callback)(int, ...)); // expected-error {{'callback' attribute references function of type 'void (int, ...)' which expects 1 argument but attribute specifies 5 parameter index arguments}}
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__attribute__((callback(cb))) void unknown_name1(void (*callback)(void)) {} // expected-error {{'callback' attribute argument 'cb' is not a known function parameter}}
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__attribute__((callback(cb, ab))) void unknown_name2(void (*cb)(int), int a) {} // expected-error {{'callback' attribute argument 'ab' is not a known function parameter}}
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__attribute__((callback(callback, 1))) void too_many_args_1b(void (*callback)(void)) {} // expected-error-re {{'callback' attribute references function of type 'void ({{(void)?}})' which expects 0 arguments but attribute specifies 1 parameter index argument}}
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__attribute__((callback(callback, __))) void too_many_args_2b(double (*callback)(void)); // expected-error-re {{'callback' attribute references function of type 'double ({{(void)?}})' which expects 0 arguments but attribute specifies 1 parameter index argument}}
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__attribute__((callback(callback, 2, 2))) void too_many_args_3b(void (*callback)(int), int); // expected-error {{'callback' attribute references function of type 'void (int)' which expects 1 argument but attribute specifies 2 parameter index arguments}}
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__attribute__((callback(callback, a))) void too_few_args_1b(void (*callback)(int, int), int a); // expected-error {{'callback' attribute references function of type 'void (int, int)' which expects 2 arguments but attribute specifies 1 parameter index argument}}
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__attribute__((callback(callback))) void too_few_args_2b(int (*callback)(int)); // expected-error {{'callback' attribute references function of type 'int (int)' which expects 1 argument but attribute specifies 0 parameter index arguments}}
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__attribute__((callback(callback, __))) void too_few_args_3b(void (*callback)(int, int)) {} // expected-error {{'callback' attribute references function of type 'void (int, int)' which expects 2 arguments but attribute specifies 1 parameter index argument}}
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__attribute__((callback(__))) void oob_args_1b(void (*callback)(void)); // expected-error {{'callback' attribute specifies invalid callback callee}}
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__attribute__((callback(callback))) __attribute__((callback(callback))) void multiple_cb_1b(void (*callback)(void)); // expected-error {{multiple 'callback' attributes specified}}
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__attribute__((callback(1))) __attribute__((callback(callback2))) void multiple_cb_2b(void (*callback1)(void), void (*callback2)(void)); // expected-error {{multiple 'callback' attributes specified}}
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#ifdef HAS_THIS
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__attribute__((callback(this))) void oob_args_0b(void (*callback)(void)); // expected-error {{'callback' attribute specifies invalid callback callee}}
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#else
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__attribute__((callback(this))) void oob_args_0b(void (*callback)(void)); // expected-error {{'callback' argument at position 1 references unavailable implicit 'this'}}
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__attribute__((callback(1, this))) void no_this_1b(void *(*callback)(void *)); // expected-error {{'callback' argument at position 2 references unavailable implicit 'this'}}
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__attribute__((callback(1, this))) void no_this_2b(void *(*callback)(int, void *)); // expected-error {{'callback' argument at position 2 references unavailable implicit 'this'}}
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#endif
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// We could allow the following declarations if we at some point need to:
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__attribute__((callback(callback, __))) void vararg_cb_1b(void (*callback)(int, ...)) {} // expected-error {{'callback' attribute callee may not be variadic}}
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__attribute__((callback(1, a))) void vararg_cb_2b(void (*callback)(int, ...), int a); // expected-error {{'callback' attribute callee may not be variadic}}
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__attribute__((callback(callback, __, callback, a, b, c, __))) void varargs_1b(void (*callback)(int, ...), int a, float b, double c) {} // expected-error {{'callback' attribute references function of type 'void (int, ...)' which expects 1 argument but attribute specifies 6 parameter index arguments}}
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__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 references function of type 'void (void *, double, int, ...)' which expects 3 arguments but attribute specifies 6 parameter index arguments}}
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__attribute__((callback(1, __, callback))) void self_arg_1b(void (*callback)(int, ...)) {} // expected-error {{'callback' attribute references function of type 'void (int, ...)' which expects 1 argument but attribute specifies 2 parameter index arguments}}
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__attribute__((callback(callback, __, callback, __, __, callback))) void self_arg_2b(void (*callback)(int, ...)); // expected-error {{'callback' attribute references function of type 'void (int, ...)' which expects 1 argument but attribute specifies 5 parameter index arguments}}
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