1 // RUN: %clang_cc1 -fsyntax-only -verify %s -triple x86_64-linux-gnu -Wincompatible-pointer-types 2 // 3 // Tests for the pass_object_size attribute 4 // Non-failure cases are covered in test/CodeGen/pass-object-size.c 5 6 void a(void *p __attribute__((pass_object_size))); //expected-error{{'pass_object_size' attribute takes one argument}} 7 void b(void *p __attribute__((pass_object_size(1.0)))); //expected-error{{'pass_object_size' attribute requires parameter 1 to be an integer constant}} 8 9 void c(void *p __attribute__((pass_object_size(4)))); //expected-error{{'pass_object_size' attribute requires integer constant between 0 and 3 inclusive}} 10 void d(void *p __attribute__((pass_object_size(-1)))); //expected-error{{'pass_object_size' attribute requires integer constant between 0 and 3 inclusive}} 11 12 void e(void *p __attribute__((pass_object_size(1ULL<<32)))); //expected-error{{integer constant expression evaluates to value 4294967296 that cannot be represented in a 32-bit unsigned integer type}} 13 14 void f(char p __attribute__((pass_object_size(0)))); //expected-error{{'pass_object_size' attribute only applies to constant pointer arguments}} 15 void g(const char p __attribute__((pass_object_size(0)))); //expected-error{{'pass_object_size' attribute only applies to constant pointer arguments}} h(char * p)16void h(char *p __attribute__((pass_object_size(0)))) {} //expected-error{{pass_object_size attribute only applies to constant pointer arguments}} 17 void i(char *p __attribute__((pass_object_size(0)))); // OK -- const is only necessary on definitions, not decls. 18 void j(char *p __attribute__((pass_object_size(0), pass_object_size(1)))); //expected-error{{'pass_object_size' attribute can only be applied once per parameter}} 19 20 void k(char *p __attribute__((pass_dynamic_object_size))); // expected-error {{'pass_dynamic_object_size' attribute takes one argument}} 21 void l(int p __attribute__((pass_dynamic_object_size(0)))); // expected-error {{'pass_dynamic_object_size' attribute only applies to constant pointer arguments}} 22 23 #define PS(N) __attribute__((pass_object_size(N))) 24 #define overloaded __attribute__((overloadable)) 25 void Overloaded(void *p PS(0)) overloaded; //expected-note{{previous declaration is here}} 26 void Overloaded(void *p PS(1)) overloaded; //expected-error{{conflicting pass_object_size attributes on parameters}} 27 void Overloaded2(void *p PS(1), void *p2 PS(0)) overloaded; //expected-note{{previous declaration is here}} 28 void Overloaded2(void *p PS(0), void *p2 PS(1)) overloaded; //expected-error{{conflicting pass_object_size attributes on parameters}} 29 30 void Overloaded3(void *p PS(0), void *p2) overloaded; //expected-note{{previous declaration is here}} 31 void Overloaded3(void *p, void *p2 PS(0)) overloaded; //expected-error{{conflicting pass_object_size attributes on parameters}} 32 33 void TakeFn(void (*)(void *)); 34 void TakeFnOvl(void (*)(void *)) overloaded; 35 void TakeFnOvl(void (*)(int *)) overloaded; 36 37 void NotOverloaded(void *p PS(0)); 38 void IsOverloaded(void *p PS(0)) overloaded; // expected-note 2 {{candidate address cannot be taken because parameter 1 has pass_object_size attribute}} 39 40 // char* inestead of void* is intentional 41 void IsOverloaded(char *p) overloaded; // expected-note{{passing argument to parameter 'p' here}} expected-note 2 {{type mismatch}} 42 FunctionPtrs()43void FunctionPtrs() { 44 void (*p)(void *) = NotOverloaded; //expected-error{{cannot take address of function 'NotOverloaded' because parameter 1 has pass_object_size attribute}} 45 void (*p2)(void *) = &NotOverloaded; //expected-error{{cannot take address of function 'NotOverloaded' because parameter 1 has pass_object_size attribute}} 46 47 void (*p3)(void *) = IsOverloaded; //expected-warning{{incompatible function pointer types initializing 'void (*)(void *)' with an expression of type '<overloaded function type>'}} 48 void (*p4)(void *) = &IsOverloaded; //expected-warning{{incompatible function pointer types initializing 'void (*)(void *)' with an expression of type '<overloaded function type>'}} 49 50 void (*p5)(char *) = IsOverloaded; 51 void (*p6)(char *) = &IsOverloaded; 52 53 TakeFn(NotOverloaded); //expected-error{{cannot take address of function 'NotOverloaded' because parameter 1 has pass_object_size attribute}} 54 TakeFn(&NotOverloaded); //expected-error{{cannot take address of function 'NotOverloaded' because parameter 1 has pass_object_size attribute}} 55 56 TakeFnOvl(NotOverloaded); //expected-error{{cannot take address of function 'NotOverloaded' because parameter 1 has pass_object_size attribute}} 57 TakeFnOvl(&NotOverloaded); //expected-error{{cannot take address of function 'NotOverloaded' because parameter 1 has pass_object_size attribute}} 58 59 int P; 60 (&NotOverloaded)(&P); //expected-error{{cannot take address of function 'NotOverloaded' because parameter 1 has pass_object_size attribute}} 61 (&IsOverloaded)(&P); //expected-warning{{incompatible pointer types passing 'int *' to parameter of type 'char *'}} 62 } 63 64 void mismatch(void *p __attribute__((pass_object_size(0)))); // expected-note {{previous declaration is here}} 65 void mismatch(void *p __attribute__((pass_dynamic_object_size(0)))); // expected-error {{conflicting pass_object_size attributes on parameters}} 66 67 void mismatch2(void *p __attribute__((pass_dynamic_object_size(0)))); // expected-note {{previous declaration is here}} 68 void mismatch2(void *p __attribute__((pass_dynamic_object_size(1)))); // expected-error {{conflicting pass_object_size attributes on parameters}} 69