1// RUN: %clang_cc1 -fsyntax-only -verify -Wno-objc-root-class %s 2 3@interface PBXTrackableTaskManager @end 4 5@implementation PBXTrackableTaskManager 6- (id) init { return 0; } 7- (void) unregisterTask:(id) task { 8 @synchronized (self) { 9 id taskID = [task taskIdentifier]; // expected-warning {{method '-taskIdentifier' not found (return type defaults to 'id')}} 10 } 11} 12@end 13 14 15struct x { int a; } b; 16 17void test1() { 18 @synchronized (b) { // expected-error {{@synchronized requires an Objective-C object type ('struct x' invalid)}} 19 } 20 21 @synchronized (42) { // expected-error {{@synchronized requires an Objective-C object type ('int' invalid)}} 22 } 23} 24