| // RUN: cd %S | 
 |  | 
 | // RUN: %clang_cc1 -emit-pch -x objective-c-header %s -o %t_c00.pch -fno-pch-timestamp | 
 | // RUN: %clang_cc1 -emit-pch -x objective-c-header %s -o %t_c00_1.pch -fno-pch-timestamp | 
 | // RUN: diff %t_c00.pch %t_c00_1.pch | 
 |  | 
 | // RUN: %clang_cc1 -emit-pch -x objective-c-header %s -o %t_c00_2.pch -fno-pch-timestamp | 
 | // RUN: diff %t_c00.pch %t_c00_2.pch | 
 |  | 
 | // RUN: %clang_cc1 -emit-pch -x objective-c-header %s -o %t_c00_3.pch -fno-pch-timestamp | 
 | // RUN: diff %t_c00.pch %t_c00_3.pch | 
 |  | 
 | // RUN: %clang_cc1 -emit-pch -x objective-c-header %s -o %t_c00_4.pch -fno-pch-timestamp | 
 | // RUN: diff %t_c00.pch %t_c00_4.pch | 
 |  | 
 | // RUN: %clang_cc1 -emit-pch -x objective-c-header %s -o %t_c00_5.pch -fno-pch-timestamp | 
 | // RUN: diff %t_c00.pch %t_c00_5.pch | 
 |  | 
 | @protocol NSObject | 
 | - (void)doesNotRecognizeSelector:(SEL)aSelector; | 
 | - (id)forwardingTargetForSelector:(SEL)aSelector; | 
 | @end |