text: // RUN: %clang_cc1 -DSTDCPP11 -std=c++11 -verify -fsyntax-only %s
  // RUN: %clang_cc1 -DSTDGNU11 -std=gnu++11 -verify -fsyntax-only %s
  // RUN: %clang_cc1 -DSTDGNU11TRI -ftrigraphs -std=gnu++11 -verify -fsyntax-only %s
  // RUN: %clang_cc1 -DSTDCPP17 -std=c++1z -verify -fsyntax-only %s
  // RUN: %clang_cc1 -DSTDCPP17TRI -ftrigraphs -std=c++1z -verify -fsyntax-only %s
  // RUN: %clang_cc1 -DMSCOMPAT -fms-compatibility -std=c++11 -verify -fsyntax-only %s
  
  void foo() {
  #if defined(NOFLAGS) || defined(STDCPP11) || defined(STDGNU11TRI) || \
      defined(STDCPP17TRI)
    const char c[] = "??/n"; // expected-warning{{trigraph converted to '\' character}}
  #elif defined(STDGNU11) || defined(STDCPP17) || defined(MSCOMPAT)
    const char c[] = "??/n"; // expected-warning{{trigraph ignored}}
  #else
  #error Not handled.
  #endif
  }
  