llvm-for-llvmta/tools/clang/test/SemaObjCXX/objc-weak.mm

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2022-04-25 13:02:35 +02:00
// RUN: %clang_cc1 -fsyntax-only -fobjc-runtime-has-weak -fobjc-weak -fblocks -Wno-objc-root-class -std=c++98 -Wno-c++0x-extensions -verify %s
@interface AnObject
@property(weak) id value;
@end
__attribute__((objc_arc_weak_reference_unavailable))
@interface NOWEAK : AnObject // expected-note 2 {{class is declared here}}
@end
struct S {
__weak id a; // expected-note {{because type 'S' has a member with __weak ownership}}
};
union U {
__weak id a;
S b; // expected-error {{union member 'b' has a non-trivial copy constructor}}
};
void testCast(AnObject *o) {
__weak id a = reinterpret_cast<__weak NOWEAK *>(o); // expected-error {{class is incompatible with __weak references}} \
// expected-error {{explicit ownership qualifier on cast result has no effect}} \
// expected-error {{assignment of a weak-unavailable object to a __weak object}}
__weak id b = static_cast<__weak NOWEAK *>(o); // expected-error {{class is incompatible with __weak references}} \
// expected-error {{explicit ownership qualifier on cast result has no effect}} \
// expected-error {{assignment of a weak-unavailable object to a __weak object}}
}