llvm-project/clang/test/SemaObjC/method-undefined-warn-1.m

// RUN: %clang_cc1 -fsyntax-only -verify %s

@interface INTF
- (void) meth;
- (void) meth : (int) arg1;
- (int)  int_meth;  // expected-note {{method definition for 'int_meth' not found}}
+ (int) cls_meth;  // expected-note {{method definition for 'cls_meth' not found}}
+ (void) cls_meth1 : (int) arg1;  // expected-note {{method definition for 'cls_meth1:' not found}}
@end

@implementation INTF 	// expected-warning {{incomplete implementation}}
- (void) meth {}
- (void) meth : (int) arg2{}
- (void) cls_meth1 : (int) arg2{}
@end

@interface INTF1
- (void) meth;
- (void) meth : (int) arg1;
- (int)  int_meth;       // expected-note {{method definition for 'int_meth' not found}}
+ (int) cls_meth;        // expected-note {{method definition for 'cls_meth' not found}}
+ (void) cls_meth1 : (int) arg1;  // expected-note {{method definition for 'cls_meth1:' not found}}
@end

@implementation INTF1 // expected-warning {{incomplete implementation}}
- (void) meth {}
- (void) meth : (int) arg2{}
- (void) cls_meth1 : (int) arg2{}
@end

@interface INTF2
- (void) meth;
- (void) meth : (int) arg1;
- (void) cls_meth1 : (int) arg1; 
@end

@implementation INTF2
- (void) meth {}
- (void) meth : (int) arg2{}
- (void) cls_meth1 : (int) arg2{}
@end


// rdar://8850818
@interface Root @end

@interface Foo : Root @end

@implementation Foo

- (void)someFunction { return; }

+ (void)anotherFunction {
    [self someFunction]; // expected-warning {{method '+someFunction' not found (return type defaults to 'id')}}
}
@end