llvm-project/clang/test/SemaObjCXX/is-base-of.mm

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// RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s
@interface NSObj
@end
@interface NSChild : NSObj
@end
static_assert(__is_base_of(NSObj, NSChild), "");
static_assert(!__is_base_of(NSChild, NSObj), "");
static_assert(__is_base_of(NSObj, NSObj), "");
static_assert(!__is_base_of(NSObj *, NSChild *), "");
static_assert(!__is_base_of(NSChild *, NSObj *), "");
static_assert(__is_base_of(const volatile NSObj, NSChild), "");
static_assert(__is_base_of(NSObj, const volatile NSChild), "");
@class NSForward; // expected-note{{forward declaration of class}}
static_assert(!__is_base_of(NSForward, NSObj), "");
static_assert(!__is_base_of(NSObj, NSForward), ""); // expected-error{{incomplete type 'NSForward'}}
static_assert(!__is_base_of(id, NSObj), "");