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// RUN: %clang_cc1 -fsyntax-only -verify -Wno-objc-root-class %s
@interface Foo
@end
@implementation Foo
void func(id);
+ zone {
func(self);
return self;
}
@end
@protocol P0
@end
@protocol P1
@end
@interface A <P0>
@end
@interface B : A
@end
@interface C <P1>
@end
int& f(A*); // expected-note {{candidate}}
float& f(B*); // expected-note {{candidate}}
void g(A*);
int& h(A*);
float& h(id);
void test0(A* a, B* b, id val) {
int& i1 = f(a);
float& f1 = f(b);
// GCC succeeds here, which is clearly ridiculous.
float& f2 = f(val); // expected-error {{ambiguous}}
g(a);
g(b);
g(val);
int& i2 = h(a);
float& f3 = h(val);
int& i3 = h(b);
}
void test1(A* a) {
B* b = a; // expected-warning{{incompatible pointer types initializing 'B *' with an expression of type 'A *'}}
B *c; c = a; // expected-warning{{incompatible pointer types assigning to 'B *' from 'A *'}}
}
void test2(A** ap) {
B** bp = ap; // expected-warning{{incompatible pointer types initializing 'B **' with an expression of type 'A **'}}
bp = ap; // expected-warning{{incompatible pointer types assigning to 'B **' from 'A **'}}
}
// FIXME: we should either allow overloading here or give a better diagnostic
int& cv(A*); // expected-note {{previous declaration}} expected-note 2 {{not viable}}
float& cv(const A*); // expected-error {{cannot be overloaded}}
int& cv2(void*);
float& cv2(const void*);
void cv_test(A* a, B* b, const A* ac, const B* bc) {
int &i1 = cv(a);
int &i2 = cv(b);
float &f1 = cv(ac); // expected-error {{no matching function}}
float &f2 = cv(bc); // expected-error {{no matching function}}
int& i3 = cv2(a);
float& f3 = cv2(ac);
}
// We agree with GCC that these can't be overloaded.
int& qualid(id<P0>); // expected-note {{previous declaration}} expected-note {{not viable}}
float& qualid(id<P1>); // expected-error {{cannot be overloaded}}
void qualid_test(A *a, B *b, C *c) {
int& i1 = qualid(a);
int& i2 = qualid(b);
// This doesn't work only because the overload was rejected above.
float& f1 = qualid(c); // expected-error {{no matching function}}
id<P0> p1 = 0;
p1 = 0;
}
@class NSException;
typedef struct {
void (*throw_exc)(id);
}
objc_exception_functions_t;
void (*_NSExceptionRaiser(void))(NSException *) {
objc_exception_functions_t exc_funcs;
return exc_funcs.throw_exc; // expected-warning{{incompatible pointer types returning 'void (*)(id)' from a function with result type 'void (*)(NSException *)'}}
}
namespace test5 {
void foo(bool);
void foo(void *);
void test(id p) {
foo(p);
}
}
// rdar://problem/8592139
namespace test6 {
void foo(id); // expected-note{{candidate function}}
void foo(A*) __attribute__((unavailable)); // expected-note {{explicitly made unavailable}}
void test(B *b) {
foo(b); // expected-error {{call to unavailable function 'foo'}}
}
}
namespace rdar8714395 {
int &f(const void*);
float &f(const Foo*);
int &f2(const void*);
float &f2(Foo const* const *);
int &f3(const void*);
float &f3(Foo const**);
void g(Foo *p) {
float &fr = f(p);
float &fr2 = f2(&p);
int &ir = f3(&p);
}
}
namespace rdar8734046 {
void f1(id);
void f2(id<P0>);
void g(const A *a) {
f1(a);
f2(a);
}
}
namespace PR9735 {
int &f3(const A*);
float &f3(const void*);
void test_f(B* b, const B* bc) {
int &ir1 = f3(b);
int &ir2 = f3(bc);
}
}
@interface D : B
@end
namespace rdar9327203 {
int &f(void* const&, int);
float &f(void* const&, long);
void g(id x) {
int &fr = (f)(x, 0);
}
}
namespace class_id {
// it's okay to overload Class with id.
void f(Class) { }
void f(id) { }
}
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