1// RUN: %clang_cc1 -fsyntax-only -verify -pedantic -Wno-objc-root-class %s
2@protocol NSObject
3@end
4
5@protocol DTOutputStreams <NSObject>
6@end
7
8@interface DTFilterOutputStream <DTOutputStreams>
9- nextOutputStream;
10@end
11
12@implementation DTFilterOutputStream
13- (id)initWithNextOutputStream:(id <DTOutputStreams>) outputStream {
14  id <DTOutputStreams> nextOutputStream = [self nextOutputStream];
15  self = nextOutputStream;
16  return nextOutputStream ? nextOutputStream : self;
17}
18- nextOutputStream {
19  return self;
20}
21@end
22
23@interface DTFilterOutputStream2
24- nextOutputStream; // expected-note {{method 'nextOutputStream' declared here}}
25@end
26
27@implementation DTFilterOutputStream2 // expected-warning {{method definition for 'nextOutputStream' not found}}
28- (id)initWithNextOutputStream:(id <DTOutputStreams>) outputStream {
29  id <DTOutputStreams> nextOutputStream = [self nextOutputStream];
30  self = nextOutputStream; // expected-warning {{assigning to 'DTFilterOutputStream2 *' from incompatible type 'id<DTOutputStreams>'}}
31  return nextOutputStream ? nextOutputStream : self; // expected-warning {{incompatible operand types ('id<DTOutputStreams>' and 'DTFilterOutputStream2 *')}}
32}
33@end
34
35// No @interface declaration for DTFilterOutputStream3
36@implementation DTFilterOutputStream3 // expected-warning {{cannot find interface declaration for 'DTFilterOutputStream3'}} \
37				      // expected-note {{receiver is instance of class declared here}}
38- (id)initWithNextOutputStream:(id <DTOutputStreams>) outputStream {
39  id <DTOutputStreams> nextOutputStream = [self nextOutputStream]; // expected-warning {{method '-nextOutputStream' not found (return type defaults to 'id')}}
40  self = nextOutputStream; // expected-warning {{assigning to 'DTFilterOutputStream3 *' from incompatible type 'id<DTOutputStreams>'}}
41  return nextOutputStream ? nextOutputStream : self; // expected-warning {{incompatible operand types ('id<DTOutputStreams>' and 'DTFilterOutputStream3 *')}}
42}
43@end
44
45//
46
47@protocol P0
48@property int intProp;
49@end
50@protocol P1
51@end
52@protocol P2
53@end
54@protocol P3 <P1>
55@end
56@protocol P4 <P1>
57@end
58
59@interface A <P0>
60@end
61
62@interface B : A
63@end
64
65@interface C
66@end
67
68@interface D
69@end
70
71@interface E : A
72@end
73
74void f0(id<P0> x) {
75  x.intProp = 1;
76}
77
78void f1(int cond, id<P0> x, id<P0> y) {
79  (cond ? x : y).intProp = 1;
80}
81
82void f2(int cond, id<P0> x, A *y) {
83  (cond ? x : y).intProp = 1;
84}
85
86void f3(int cond, id<P0> x, B *y) {
87  (cond ? x : y).intProp = 1;
88}
89
90void f4(int cond, id x, B *y) {
91  (cond ? x : y).intProp = 1; // expected-error {{property 'intProp' not found on object of type 'id'}}
92}
93
94void f5(int cond, id<P0> x, C *y) {
95  (cond ? x : y).intProp = 1; // expected-warning {{incompatible operand types ('id<P0>' and 'C *')}} expected-error {{property 'intProp' not found on object of type 'id'}}
96}
97
98void f6(int cond, C *x, D *y) {
99  (cond ? x : y).intProp = 1; // expected-warning {{incompatible operand types}}, expected-error {{property 'intProp' not found on object of type 'id'}}
100}
101
102id f7(int a, id<P0> x, A* p) {
103  return a ? x : p;
104}
105
106int f8(int a, A<P0> *x, A *y) {
107  return [ (a ? x : y ) intProp ];
108}
109
110void f9(int a, A<P0> *x, A<P1> *y) {
111  id l0 = (a ? x : y );     // Ok. y is of A<P1> object type and A is qualified by P0.
112  A<P0> *l1 = (a ? x : y ); // Ok. y is of A<P1> object type and A is qualified by P0.
113  A<P1> *l2 = (a ? x : y ); // expected-warning {{incompatible pointer types initializing 'A<P1> *' with an expression of type 'A<P0> *'}}
114  (void)[ (a ? x : y ) intProp ]; // Ok. Common type is A<P0> * and P0's property intProp is accessed.
115}
116
117void f10(int a, id<P0> x, id y) {
118  [ (a ? x : y ) intProp ];
119}
120
121void f11(int a, id<P0> x, id<P1> y) {
122  [ (a ? x : y ) intProp ]; // expected-warning {{incompatible operand types ('id<P0>' and 'id<P1>')}}
123}
124
125void f12(int a, A<P0> *x, A<P1> *y) {
126  A<P1>* l0 = (a ? x : y ); // expected-warning {{incompatible pointer types initializing 'A<P1> *' with an expression of type 'A<P0> *'}}
127}
128
129void f13(int a, B<P3, P0> *x, E<P0, P4> *y) {
130  int *ip = a ? x : y; // expected-warning{{expression of type 'A<P1> *'}}
131}
132