You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
91 lines
1.5 KiB
91 lines
1.5 KiB
// RUN: %clang_cc1 -fsyntax-only -verify %s
|
|
// expected-no-diagnostics
|
|
@protocol P1
|
|
@end
|
|
|
|
@interface A <P1>
|
|
@end
|
|
|
|
@interface B : A
|
|
@end
|
|
|
|
@interface C : B
|
|
@end
|
|
|
|
template<typename T>
|
|
struct ConvertsTo {
|
|
operator T() const;
|
|
};
|
|
|
|
|
|
// conversion of C* to B* is better than conversion of C* to A*.
|
|
int &f0(A*);
|
|
float &f0(B*);
|
|
|
|
void test_f0(C *c) {
|
|
float &fr1 = f0(c);
|
|
}
|
|
|
|
// conversion of B* to A* is better than conversion of C* to A*
|
|
void f1(A*);
|
|
|
|
struct ConvertsToBoth {
|
|
private:
|
|
operator C*() const;
|
|
|
|
public:
|
|
operator B*() const;
|
|
};
|
|
|
|
void test_f1(ConvertsTo<B*> toB, ConvertsTo<C*> toC, ConvertsToBoth toBoth) {
|
|
f1(toB);
|
|
f1(toC);
|
|
f1(toBoth);
|
|
};
|
|
|
|
// A conversion to an a non-id object pointer type is better than a
|
|
// conversion to 'id'.
|
|
int &f2(A*);
|
|
float &f2(id);
|
|
|
|
void test_f2(B *b) {
|
|
int &ir = f2(b);
|
|
}
|
|
|
|
// A conversion to an a non-Class object pointer type is better than a
|
|
// conversion to 'Class'.
|
|
int &f3(A*);
|
|
float &f3(Class);
|
|
|
|
void test_f3(B *b) {
|
|
int &ir = f3(b);
|
|
}
|
|
|
|
// When both conversions convert to 'id' or 'Class', pick the most
|
|
// specific type to convert from.
|
|
void f4(id);
|
|
|
|
void test_f4(ConvertsTo<B*> toB, ConvertsTo<C*> toC, ConvertsToBoth toBoth) {
|
|
f4(toB);
|
|
f4(toC);
|
|
f4(toBoth);
|
|
}
|
|
|
|
void f5(id<P1>);
|
|
|
|
void test_f5(ConvertsTo<B*> toB, ConvertsTo<C*> toC, ConvertsToBoth toBoth) {
|
|
f5(toB);
|
|
f5(toC);
|
|
f5(toBoth);
|
|
}
|
|
|
|
|
|
// A conversion to an a non-id object pointer type is better than a
|
|
// conversion to qualified 'id'.
|
|
int &f6(A*);
|
|
float &f6(id<P1>);
|
|
|
|
void test_f6(B *b) {
|
|
int &ir = f6(b);
|
|
}
|