llvm-project/clang/test/SemaObjCXX/protocol-lookup.mm

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// RUN: %clang_cc1 -fsyntax-only -verify %s
@protocol NSObject
- retain;
- release;
@end
@interface NSObject
- init;
- dealloc;
@end
@protocol Foo <NSObject>
@end
@protocol Bar <Foo>
@end
@interface Baz : NSObject {
id <Foo> _foo;
id <Bar> _bar;
}
- (id)initWithFoo:(id <Foo>)foo bar:(id <Bar>)bar;
@end
@implementation Baz
- (id)init
{
return [self initWithFoo:0 bar:0];
}
- (id)initWithFoo:(id <Foo>)foo bar:(id <Bar>)bar
{
self = [super init];
if (self != 0) {
_foo = [foo retain];
_bar = [bar retain];
}
return self;
}
- dealloc
{
[_foo release];
[_bar release];
[super dealloc];
return 0;
}
@end
void rdar8575095(id a) {
[id<NSObject>(a) retain];
id<NSObject> x(id<NSObject>(0));
id<NSObject> x2(id<NSObject>(y)); // expected-warning{{disambiguated as a function declaration}} expected-note{{add a pair of parentheses}}
}