1*67e74705SXin Li// RUN: %clang_cc1 -fsyntax-only -verify -Wno-objc-root-class %s 2*67e74705SXin Li// expected-no-diagnostics 3*67e74705SXin Li 4*67e74705SXin Litypedef union { 5*67e74705SXin Li struct xx_object_s *_do; 6*67e74705SXin Li struct xx_continuation_s *_dc; 7*67e74705SXin Li struct xx_queue_s *_dq; 8*67e74705SXin Li struct xx_queue_attr_s *_dqa; 9*67e74705SXin Li struct xx_group_s *_dg; 10*67e74705SXin Li struct xx_source_s *_ds; 11*67e74705SXin Li struct xx_source_attr_s *_dsa; 12*67e74705SXin Li struct xx_semaphore_s *_dsema; 13*67e74705SXin Li} xx_object_t __attribute__((transparent_union)); 14*67e74705SXin Li 15*67e74705SXin Li@interface INTF 16*67e74705SXin Li- (void) doSomething : (xx_object_t) xxObject; 17*67e74705SXin Li- (void)testMeth; 18*67e74705SXin Li@end 19*67e74705SXin Li 20*67e74705SXin Li@implementation INTF 21*67e74705SXin Li- (void) doSomething : (xx_object_t) xxObject {} 22*67e74705SXin Li- (void)testMeth { struct xx_queue_s *sq; [self doSomething:sq ]; } 23*67e74705SXin Li@end 24