69 lines · c
1// RUN: %clang_cc1 -fsyntax-only -verify %s -triple x86_64-linux-gnu -Wincompatible-pointer-types2//3// Tests for the pass_object_size attribute4// Non-failure cases are covered in test/CodeGen/pass-object-size.c5 6void a(void *p __attribute__((pass_object_size))); //expected-error{{'pass_object_size' attribute takes one argument}}7void b(void *p __attribute__((pass_object_size(1.0)))); //expected-error{{'pass_object_size' attribute requires parameter 1 to be an integer constant}}8 9void c(void *p __attribute__((pass_object_size(4)))); //expected-error{{'pass_object_size' attribute requires integer constant between 0 and 3 inclusive}}10void d(void *p __attribute__((pass_object_size(-1)))); //expected-error{{'pass_object_size' attribute requires integer constant between 0 and 3 inclusive}}11 12void 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 14void f(char p __attribute__((pass_object_size(0)))); //expected-error{{'pass_object_size' attribute only applies to constant pointer arguments}}15void g(const char p __attribute__((pass_object_size(0)))); //expected-error{{'pass_object_size' attribute only applies to constant pointer arguments}}16void h(char *p __attribute__((pass_object_size(0)))) {} //expected-error{{pass_object_size attribute only applies to constant pointer arguments}}17void i(char *p __attribute__((pass_object_size(0)))); // OK -- const is only necessary on definitions, not decls.18void 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 20void k(char *p __attribute__((pass_dynamic_object_size))); // expected-error {{'pass_dynamic_object_size' attribute takes one argument}}21void 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))25void Overloaded(void *p PS(0)) overloaded; //expected-note{{previous declaration is here}}26void Overloaded(void *p PS(1)) overloaded; //expected-error{{conflicting pass_object_size attributes on parameters}}27void Overloaded2(void *p PS(1), void *p2 PS(0)) overloaded; //expected-note{{previous declaration is here}}28void Overloaded2(void *p PS(0), void *p2 PS(1)) overloaded; //expected-error{{conflicting pass_object_size attributes on parameters}}29 30void Overloaded3(void *p PS(0), void *p2) overloaded; //expected-note{{previous declaration is here}}31void Overloaded3(void *p, void *p2 PS(0)) overloaded; //expected-error{{conflicting pass_object_size attributes on parameters}}32 33void TakeFn(void (*)(void *));34void TakeFnOvl(void (*)(void *)) overloaded;35void TakeFnOvl(void (*)(int *)) overloaded;36 37void NotOverloaded(void *p PS(0));38void 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 intentional41void IsOverloaded(char *p) overloaded; // expected-note{{passing argument to parameter 'p' here}} expected-note 2 {{type mismatch}}42 43void FunctionPtrs(void) {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-error{{incompatible function pointer types initializing 'void (*)(void *)' with an expression of type '<overloaded function type>'}}48 void (*p4)(void *) = &IsOverloaded; //expected-error{{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-error{{incompatible pointer types passing 'int *' to parameter of type 'char *'}}62}63 64void mismatch(void *p __attribute__((pass_object_size(0)))); // expected-note {{previous declaration is here}}65void mismatch(void *p __attribute__((pass_dynamic_object_size(0)))); // expected-error {{conflicting pass_object_size attributes on parameters}}66 67void mismatch2(void *p __attribute__((pass_dynamic_object_size(0)))); // expected-note {{previous declaration is here}}68void mismatch2(void *p __attribute__((pass_dynamic_object_size(1)))); // expected-error {{conflicting pass_object_size attributes on parameters}}69