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clang/test/SemaObjCXX/comptypes-1.mm
- This file was added.
| // RUN: %clang_cc1 -fsyntax-only -verify -pedantic %s | |||||
| #define nil nullptr | |||||
| extern void foo(); | |||||
| @protocol MyProtocol | |||||
| - (void) foo; | |||||
| + (void) bar; | |||||
| @end | |||||
| @interface MyClass | |||||
| @end | |||||
| @interface MyOtherClass <MyProtocol> | |||||
| - (void) foo; | |||||
| @end | |||||
| int main() | |||||
| { | |||||
| id obj = nil; | |||||
| id<MyProtocol> obj_p = nil; | |||||
| MyClass *obj_c = nil; | |||||
| MyOtherClass *obj_cp = nil; | |||||
| Class obj_C = nil; | |||||
| Class<MyProtocol> obj_CP = nil; | |||||
| /* Assigning to an 'id' variable should never | |||||
| generate a warning. */ | |||||
| obj = obj_p; /* Ok */ | |||||
| obj = obj_c; /* Ok */ | |||||
| obj = obj_cp; /* Ok */ | |||||
| obj = obj_C; /* Ok */ | |||||
| obj = obj_CP; /* Ok */ | |||||
| /* Assigning to a 'MyClass *' variable should always generate a | |||||
| warning, unless done from an 'id'. */ | |||||
| obj_c = obj; /* Ok */ | |||||
| obj_c = obj_p; // expected-error {{assigning to 'MyClass *' from incompatible type 'id<MyProtocol>'}} | |||||
| obj_c = obj_cp; // expected-error {{assigning to 'MyClass *' from incompatible type 'MyOtherClass *'}} | |||||
| obj_c = obj_C; // FIXME -- should error {{assigning to 'MyClass *' from incompatible type 'Class'}} | |||||
| obj_c = obj_CP; // expected-error {{assigning to 'MyClass *' from incompatible type 'Class<MyProtocol>'}} | |||||
| /* Assigning to an 'id<MyProtocol>' variable should generate a | |||||
| warning if done from a 'MyClass *' (which doesn't implement | |||||
| MyProtocol), but not from an 'id' or from a 'MyOtherClass *' | |||||
| (which implements MyProtocol). */ | |||||
| obj_p = obj; /* Ok */ | |||||
| obj_p = obj_c; // expected-error {{assigning to 'id<MyProtocol>' from incompatible type 'MyClass *'}} | |||||
| obj_p = obj_cp; /* Ok */ | |||||
| obj_p = obj_C; // FIXME -- should error {{assigning to 'id<MyProtocol>' from incompatible type 'Class'}} | |||||
| obj_p = obj_CP; // FIXME -- should error {{assigning to 'id<MyProtocol>' from incompatible type 'Class<MyProtocol>'}} | |||||
| /* Assigning to a 'MyOtherClass *' variable should always generate | |||||
| a warning, unless done from an 'id' or an 'id<MyProtocol>' (since | |||||
| MyOtherClass implements MyProtocol). */ | |||||
| obj_cp = obj; /* Ok */ | |||||
| obj_cp = obj_c; // expected-error {{assigning to 'MyOtherClass *' from incompatible type 'MyClass *'}} | |||||
| obj_cp = obj_p; /* Ok */ | |||||
| obj_cp = obj_C; // FIXME -- should error {{assigning to 'MyOtherClass *' from incompatible type 'Class'}} | |||||
| obj_cp = obj_CP; // expected-error {{assigning to 'MyOtherClass *' from incompatible type 'Class<MyProtocol>'}} | |||||
| obj_C = obj; // Ok | |||||
| obj_C = obj_p; // FIXME -- should error {{assigning to 'Class' from incompatible type 'id<MyProtocol>'}} | |||||
| obj_C = obj_c; // FIXME -- should error {{assigning to 'Class' from incompatible type 'MyClass *'}} | |||||
| obj_C = obj_cp; // FIXME -- should error {{assigning to 'Class' from incompatible type 'MyOtherClass *'}} | |||||
| obj_C = obj_CP; // Ok | |||||
| obj_CP = obj; // Ok | |||||
| obj_CP = obj_p; // expected-warning {{incompatible pointer types assigning to 'Class<MyProtocol>' from 'id<MyProtocol>'}} FIXME -- should error {{assigning to 'Class<MyProtocol>' from incompatible type 'id<MyProtocol>'}} | |||||
| obj_CP = obj_c; // expected-error {{assigning to 'Class<MyProtocol>' from incompatible type 'MyClass *}} | |||||
| obj_CP = obj_cp; // expected-error {{assigning to 'Class<MyProtocol>' from incompatible type 'MyOtherClass *'}} | |||||
| obj_CP = obj_C; // Ok | |||||
| /* Any comparison involving an 'id' must be without warnings. */ | |||||
| if (obj == obj_p) foo(); /* Ok */ /*Bogus warning here in 2.95.4*/ | |||||
| if (obj_p == obj) foo(); /* Ok */ | |||||
| if (obj == obj_c) foo(); /* Ok */ | |||||
| if (obj_c == obj) foo(); /* Ok */ | |||||
| if (obj == obj_cp) foo(); /* Ok */ | |||||
| if (obj_cp == obj) foo(); /* Ok */ | |||||
| if (obj == obj_C) foo(); /* Ok */ | |||||
| if (obj_C == obj) foo(); /* Ok */ | |||||
| if (obj == obj_CP) foo(); /* Ok */ | |||||
| if (obj_CP == obj) foo(); /* Ok */ | |||||
| /* Any comparison between 'MyClass *' and anything which is not an 'id' | |||||
| must generate a warning. */ | |||||
| if (obj_c == obj_p) foo(); // expected-warning {{comparison of distinct pointer types ('MyClass *' and 'id<MyProtocol>')}} | |||||
| if (obj_p == obj_c) foo(); // expected-warning {{comparison of distinct pointer types ('id<MyProtocol>' and 'MyClass *')}} | |||||
| if (obj_c == obj_cp) foo(); // expected-warning {{comparison of distinct pointer types ('MyClass *' and 'MyOtherClass *')}} | |||||
| if (obj_cp == obj_c) foo(); // expected-warning {{comparison of distinct pointer types ('MyOtherClass *' and 'MyClass *')}} | |||||
| if (obj_c == obj_C) foo(); // FIXME -- should warn {{comparison of distinct pointer types ('MyClass *' and 'Class')}} | |||||
| if (obj_C == obj_c) foo(); // FIXME -- should warn {{comparison of distinct pointer types ('Class' and 'MyClass *')}} | |||||
| if (obj_c == obj_CP) foo(); // expected-warning {{comparison of distinct pointer types ('MyClass *' and 'Class<MyProtocol>')}} | |||||
| if (obj_CP == obj_c) foo(); // expected-warning {{comparison of distinct pointer types ('Class<MyProtocol>' and 'MyClass *')}} | |||||
| /* Any comparison between 'MyOtherClass *' (which implements | |||||
| MyProtocol) and an 'id' implementing MyProtocol are Ok. */ | |||||
| if (obj_p == obj_cp) foo(); /* Ok */ | |||||
| if (obj_cp == obj_p) foo(); /* Ok */ | |||||
| if (obj_p == obj_C) foo(); // FIXME -- should warn {{comparison of distinct pointer types ('id<MyProtocol>' and 'Class')}} | |||||
| if (obj_C == obj_p) foo(); // FIXME -- should warn {{comparison of distinct pointer types ('Class' and 'id<MyProtocol>')}} | |||||
| if (obj_p == obj_CP) foo(); // FIXME -- should warn {{comparison of distinct pointer types ('id<MyProtocol>' and 'Class<MyProtocol>')}} | |||||
| if (obj_CP == obj_p) foo(); // FIXME -- should warn {{comparison of distinct pointer types ('Class<MyProtocol>' and 'id<MyProtocol>')}} | |||||
| /* Comparisons between MyOtherClass * and Class types is a warning */ | |||||
| if (obj_cp == obj_C) foo(); // FIXME -- should warn {{comparison of distinct pointer types ('MyOtherClass *' and 'Class')}} | |||||
| if (obj_C == obj_cp) foo(); // FIXME -- should warn {{comparison of distinct pointer types ('Class' and 'MyOtherClass *')}} | |||||
| if (obj_cp == obj_CP) foo(); // expected-warning {{comparison of distinct pointer types ('MyOtherClass *' and 'Class<MyProtocol>')}} | |||||
| if (obj_CP == obj_cp) foo(); // expected-warning {{comparison of distinct pointer types ('Class<MyProtocol>' and 'MyOtherClass *')}} | |||||
| /* Comparisons between a Class and a Class<MyProtocol> are ok */ | |||||
| if (obj_C == obj_CP) foo(); /* Ok */ | |||||
| if (obj_CP == obj_C) foo(); /* Ok */ | |||||
| return 0; | |||||
| } | |||||