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1// RUN: %clang_cc1 -verify -o - %s2 3__attribute__((objc_root_class))4@interface Root @end5 6// Test reference binding.7 8typedef struct {9 int f0;10 int f1;11} T;12 13@interface A : Root14@property (assign) T p0;15@property (assign) T& p1; 16@end17 18int f0(const T& t) {19 return t.f0;20}21 22int f1(A *a) {23 return f0(a.p0);24}25 26int f2(A *a) {27 return f0(a.p1); 28}29 30// PR774031@class NSString;32 33void f3(id);34void f4(NSString &tmpstr) {35 f3(&tmpstr);36}37 38// PR774139@protocol P1 @end40@protocol P2 @end41@protocol P3 @end42@interface foo<P1> {} @end43@interface bar : foo <P1, P2, P3> {} @end44typedef bar baz;45 46struct ToBar {47 operator bar&() const;48};49 50void f5(foo&);51void f5b(foo<P1>&);52void f5c(foo<P2>&);53void f5d(foo<P3>&);54void f6(baz* x) { 55 f5(*x); 56 f5b(*x); 57 f5c(*x); 58 f5d(*x);59 (void)((foo&)*x);60 f5(ToBar());61 f5b(ToBar());62 f5c(ToBar());63 f5d(ToBar());64 (void)((foo&)ToBar());65}66 67@interface B : Root @end68@implementation B {69 unsigned bf : 4; // expected-note {{declared here}}70}71 72- (void) foo {73 unsigned &i = bf; // expected-error {{non-const reference cannot bind to bit-field 'bf'}}74}75@end76