llvm-project/clang/test/SemaObjC/property-expression-error.m

// RUN: %clang_cc1  -fsyntax-only -verify -Wno-objc-root-class %s

@interface AddressMyProperties 
{
  unsigned index;
}
@property unsigned index;
@end

@implementation AddressMyProperties
@synthesize index;
@end

int main() {
	AddressMyProperties *object;
	&object.index; // expected-error {{address of property expression requested}}
	return 0;
}

typedef int Foo;
void test() {
  Foo.x;	// expected-error {{expected identifier or '('}}
}