text: // RUN: %clang_cc1 -Wdate-time -Wno-builtin-macro-redefined %s -verify -E
  // RUN: %clang_cc1 -Wdate-time -Wno-builtin-macro-redefined %s -DIS_SYSHEADER -verify -E
  // RUN: not %clang_cc1 -Werror=date-time -Wno-builtin-macro-redefined %s -DIS_SYSHEADER -E 2>&1 | grep 'error: expansion' | count 3
  
  
  #ifdef IS_HEADER
  
  #ifdef IS_SYSHEADER
  #pragma clang system_header
  #endif
  
  __TIME__ // expected-warning {{expansion of date or time macro is not reproducible}}
  __DATE__  // expected-warning {{expansion of date or time macro is not reproducible}}
  __TIMESTAMP__ // expected-warning {{expansion of date or time macro is not reproducible}}
  
  #define __TIME__
  __TIME__
  
  #else
  
  #define IS_HEADER
  #include __FILE__
  #endif
  