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// RUN: %clang_cc1 -fsyntax-only -verify -pedantic %s
#define nil (void *)0;
extern void foo(void);
@protocol MyProtocol
- (void) method;
@end
@interface MyClass
@end
int main(void)
{
id obj = nil;
id <MyProtocol> obj_p = nil;
MyClass *obj_c = nil;
Class obj_C = nil;
int i = 0;
int *j = nil;
/* The incompatible pointer types should all generate warnings, while the
incompatible integer to/from pointer conversions default to an error. */
obj = i; // expected-error {{incompatible integer to pointer conversion assigning to 'id' from 'int'}}
obj = j; // expected-warning {{incompatible pointer types assigning to 'id' from 'int *'}}
obj_p = i; // expected-error {{incompatible integer to pointer conversion assigning to 'id<MyProtocol>' from 'int'}}
obj_p = j; // expected-warning {{incompatible pointer types assigning to 'id<MyProtocol>' from 'int *'}}
obj_c = i; // expected-error {{incompatible integer to pointer conversion assigning to 'MyClass *' from 'int'}}
obj_c = j; // expected-warning {{incompatible pointer types assigning to 'MyClass *' from 'int *'}}
obj_C = i; // expected-error {{incompatible integer to pointer conversion assigning to 'Class' from 'int'}}
obj_C = j; // expected-warning {{incompatible pointer types assigning to 'Class' from 'int *'}}
i = obj; // expected-error {{incompatible pointer to integer conversion assigning to 'int' from 'id'}}
i = obj_p; // expected-error {{incompatible pointer to integer conversion assigning to 'int' from 'id<MyProtocol>'}}
i = obj_c; // expected-error {{incompatible pointer to integer conversion assigning to 'int' from 'MyClass *'}}
i = obj_C; // expected-error {{incompatible pointer to integer conversion assigning to 'int' from 'Class'}}
j = obj; // expected-warning {{incompatible pointer types assigning to 'int *' from 'id'}}
j = obj_p; // expected-warning {{incompatible pointer types assigning to 'int *' from 'id<MyProtocol>'}}
j = obj_c; // expected-warning {{incompatible pointer types assigning to 'int *' from 'MyClass *'}}
j = obj_C; // expected-warning {{incompatible pointer types assigning to 'int *' from 'Class'}}
if (obj == i) foo() ; // expected-warning {{comparison between pointer and integer ('id' and 'int')}}
if (i == obj) foo() ; // expected-warning {{comparison between pointer and integer ('int' and 'id')}}
if (obj == j) foo() ; // expected-warning {{comparison of distinct pointer types ('id' and 'int *')}}
if (j == obj) foo() ; // expected-warning {{comparison of distinct pointer types ('int *' and 'id')}}
if (obj_c == i) foo() ; // expected-warning {{comparison between pointer and integer ('MyClass *' and 'int')}}
if (i == obj_c) foo() ; // expected-warning {{comparison between pointer and integer ('int' and 'MyClass *')}}
if (obj_c == j) foo() ; // expected-warning {{comparison of distinct pointer types ('MyClass *' and 'int *')}}
if (j == obj_c) foo() ; // expected-warning {{comparison of distinct pointer types ('int *' and 'MyClass *')}}
if (obj_p == i) foo() ; // expected-warning {{comparison between pointer and integer ('id<MyProtocol>' and 'int')}}
if (i == obj_p) foo() ; // expected-warning {{comparison between pointer and integer ('int' and 'id<MyProtocol>')}}
if (obj_p == j) foo() ; // expected-warning {{comparison of distinct pointer types ('id<MyProtocol>' and 'int *')}}
if (j == obj_p) foo() ; // expected-warning {{comparison of distinct pointer types ('int *' and 'id<MyProtocol>')}}
if (obj_C == i) foo() ; // expected-warning {{comparison between pointer and integer ('Class' and 'int')}}
if (i == obj_C) foo() ; // expected-warning {{comparison between pointer and integer ('int' and 'Class')}}
if (obj_C == j) foo() ; // expected-warning {{comparison of distinct pointer types ('Class' and 'int *')}}
if (j == obj_C) foo() ; // expected-warning {{comparison of distinct pointer types ('int *' and 'Class')}}
Class bar1 = nil;
Class <MyProtocol> bar = nil;
bar = bar1;
bar1 = bar;
return 0;
}
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