90 lines
1.5 KiB
Text
90 lines
1.5 KiB
Text
// RUN: %clang_cc1 -fsyntax-only -verify %s
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// expected-no-diagnostics
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@protocol P1
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@end
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@interface A <P1>
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@end
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@interface B : A
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@end
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@interface C : B
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@end
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template<typename T>
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struct ConvertsTo {
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operator T() const;
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};
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// conversion of C* to B* is better than conversion of C* to A*.
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int &f0(A*);
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float &f0(B*);
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void test_f0(C *c) {
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float &fr1 = f0(c);
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}
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// conversion of B* to A* is better than conversion of C* to A*
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void f1(A*);
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struct ConvertsToBoth {
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private:
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operator C*() const;
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public:
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operator B*() const;
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};
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void test_f1(ConvertsTo<B*> toB, ConvertsTo<C*> toC, ConvertsToBoth toBoth) {
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f1(toB);
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f1(toC);
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f1(toBoth);
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};
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// A conversion to an a non-id object pointer type is better than a
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// conversion to 'id'.
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int &f2(A*);
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float &f2(id);
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void test_f2(B *b) {
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int &ir = f2(b);
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}
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// A conversion to an a non-Class object pointer type is better than a
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// conversion to 'Class'.
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int &f3(A*);
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float &f3(Class);
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void test_f3(B *b) {
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int &ir = f3(b);
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}
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// When both conversions convert to 'id' or 'Class', pick the most
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// specific type to convert from.
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void f4(id);
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void test_f4(ConvertsTo<B*> toB, ConvertsTo<C*> toC, ConvertsToBoth toBoth) {
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f4(toB);
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f4(toC);
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f4(toBoth);
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}
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void f5(id<P1>);
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void test_f5(ConvertsTo<B*> toB, ConvertsTo<C*> toC, ConvertsToBoth toBoth) {
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f5(toB);
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f5(toC);
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f5(toBoth);
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}
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// A conversion to an a non-id object pointer type is better than a
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// conversion to qualified 'id'.
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int &f6(A*);
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float &f6(id<P1>);
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void test_f6(B *b) {
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int &ir = f6(b);
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}
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