forked from OSchip/llvm-project
127 lines
3.1 KiB
Plaintext
127 lines
3.1 KiB
Plaintext
// RUN: %clang_cc1 -fsyntax-only -verify %s
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@interface Foo
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@end
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@implementation Foo
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void func(id);
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+ zone {
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func(self);
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return self;
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}
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@end
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@protocol P0
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@end
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@protocol P1
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@end
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@interface A <P0>
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@end
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@interface B : A
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@end
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@interface C <P1>
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@end
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int& f(A*); // expected-note {{candidate}}
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float& f(B*); // expected-note {{candidate}}
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void g(A*);
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int& h(A*);
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float& h(id);
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void test0(A* a, B* b, id val) {
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int& i1 = f(a);
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float& f1 = f(b);
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// GCC succeeds here, which is clearly ridiculous.
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float& f2 = f(val); // expected-error {{ambiguous}}
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g(a);
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g(b);
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g(val);
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int& i2 = h(a);
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float& f3 = h(val);
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// int& i3 = h(b); FIXME: we match GCC here, but shouldn't this work?
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}
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// We make these errors instead of warnings. Is that okay?
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void test1(A* a) {
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B* b = a; // expected-error{{cannot initialize a variable of type 'B *' with an lvalue of type 'A *'}}
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B *c; c = a; // expected-error{{assigning to 'B *' from incompatible type 'A *'}}
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}
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void test2(A** ap) {
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B** bp = ap; // expected-warning{{incompatible pointer types converting 'A **' to type 'B **'}}
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bp = ap; // expected-warning{{incompatible pointer types assigning to 'A **' from 'B **'}}
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}
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// FIXME: we should either allow overloading here or give a better diagnostic
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int& cv(A*); // expected-note {{previous declaration}} expected-note 2 {{not viable}}
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float& cv(const A*); // expected-error {{cannot be overloaded}}
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int& cv2(void*); // expected-note 2 {{candidate}}
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float& cv2(const void*); // expected-note 2 {{candidate}}
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void cv_test(A* a, B* b, const A* ac, const B* bc) {
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int &i1 = cv(a);
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int &i2 = cv(b);
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float &f1 = cv(ac); // expected-error {{no matching function}}
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float &f2 = cv(bc); // expected-error {{no matching function}}
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// FIXME: these should not be ambiguous
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int& i3 = cv2(a); // expected-error {{ambiguous}}
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float& f3 = cv2(ac); // expected-error {{ambiguous}}
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}
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// We agree with GCC that these can't be overloaded.
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int& qualid(id<P0>); // expected-note {{previous declaration}} expected-note {{not viable}}
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float& qualid(id<P1>); // expected-error {{cannot be overloaded}}
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void qualid_test(A *a, B *b, C *c) {
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int& i1 = qualid(a);
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int& i2 = qualid(b);
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// This doesn't work only because the overload was rejected above.
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float& f1 = qualid(c); // expected-error {{no matching function}}
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id<P0> p1 = 0;
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p1 = 0;
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}
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@class NSException;
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typedef struct {
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void (*throw_exc)(id);
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}
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objc_exception_functions_t;
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void (*_NSExceptionRaiser(void))(NSException *) {
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objc_exception_functions_t exc_funcs;
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return exc_funcs.throw_exc; // expected-warning{{incompatible pointer types converting 'void (*)(id)' to type 'void (*)(NSException *)'}}
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}
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namespace test5 {
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void foo(bool);
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void foo(void *);
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void test(id p) {
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foo(p);
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}
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}
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// rdar://problem/8592139
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// FIXME: this should resolve to the unavailable candidate
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namespace test6 {
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void foo(id); // expected-note {{candidate}}
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void foo(A*) __attribute__((unavailable)); // expected-note {{explicitly made unavailable}}
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void test(B *b) {
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foo(b); // expected-error {{call to 'foo' is ambiguous}}
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}
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}
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