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Differential D67982 Diff 225439 clang/test/SemaObjC/comptypes-1.m

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clang/test/SemaObjC/comptypes-1.m

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