clang/test/Lexer/char8_t.cpp

   1 // RUN: %clang_cc1 -std=c++20 -verify %s -DCHAR8_T
   2 // RUN: %clang_cc1 -std=c++20 -verify %s -fchar8_t -DCHAR8_T
   3 // RUN: %clang_cc1 -std=c++17 -verify %s -fchar8_t -DCHAR8_T
   4
   5 // RUN: %clang_cc1 -std=c++17 -verify %s
   6 // RUN: %clang_cc1 -std=c++17 -verify %s -fno-char8_t
   7 // RUN: %clang_cc1 -std=c++20 -verify %s -fno-char8_t
   8
   9 #if defined(__cpp_char8_t) != defined(CHAR8_T)
  10 #error wrong setting for __cpp_char_t
  11 #endif
  12
  13 #if defined(__cpp_char8_t) && __is_identifier(char8_t)
  14 #error char8_t is an identifier under -fchar8_t
  15 #endif
  16
  17 #if !defined(__cpp_char8_t) && !__is_identifier(char8_t)
  18 #error char8_t is a keyword under -fno-char8_t
  19 #endif
  20
  21 char8_t c8t;
  22 #ifndef __cpp_char8_t
  23 // expected-error@-2 {{unknown type}}
  24 #else
  25 // expected-no-diagnostics
  26 #endif