clang/test/C/drs/dr411.c

   1 /* RUN: %clang_cc1 -std=c89 -fsyntax-only -verify -DC89 -Wno-c11-extensions %s
   2    RUN: %clang_cc1 -std=c99 -fsyntax-only -verify -DC99 -Wno-c11-extensions %s
   3    RUN: %clang_cc1 -std=c11 -fsyntax-only -verify -DC11 %s
   4    RUN: %clang_cc1 -std=c17 -fsyntax-only -verify -DC17 %s
   5    RUN: %clang_cc1 -std=c2x -fsyntax-only -verify -DC2X %s
   6  */
   7
   8 /* expected-no-diagnostics */
   9
  10 /* WG14 DR411: yes
  11  * Predefined macro values
  12  *
  13  * Note: the DR is about the C11 macro value, but we'll test all the standard
  14  * version macro values just to be sure. We do not need to test
  15  * __STDC_LIB_EXT1__ values because that requires an Annex K-compatible header.
  16  */
  17 #if defined(C89)
  18 #ifdef __STDC_VERSION__
  19 #error "C89 didn't have this macro!"
  20 #endif
  21 #elif defined(C99)
  22 _Static_assert(__STDC_VERSION__ == 199901L, "");
  23 #elif defined(C11)
  24 _Static_assert(__STDC_VERSION__ == 201112L, "");
  25 #elif defined(C17)
  26 _Static_assert(__STDC_VERSION__ == 201710L, "");
  27 #elif defined(C2X)
  28 /* FIXME: this value will change once WG14 picks the final value for C2x. */
  29 _Static_assert(__STDC_VERSION__ == 202000L, "");
  30 #else
  31 #error "unknown language standard version"
  32 #endif
  33