clang/test/Parser/c11-keywords.c

   1 // RUN: %clang_cc1 %s -std=c11 -fsyntax-only -verify=compat -Wpre-c11-compat
   2 // RUN: %clang_cc1 %s -std=c99 -fsyntax-only -verify=ext -pedantic
   3 // RUN: %clang_cc1 %s -std=c11 -fsyntax-only -verify=good
   4 // RUN: %clang_cc1 -x c++ %s -fsyntax-only -verify=ext -pedantic
   5
   6 // good-no-diagnostics
   7
   8 extern _Noreturn void exit(int); /* compat-warning {{'_Noreturn' is incompatible with C standards before C11}}
   9                                     ext-warning {{'_Noreturn' is a C11 extension}}
  10                                   */
  11
  12 void func(void) {
  13   static _Thread_local int tl;   /* compat-warning {{'_Thread_local' is incompatible with C standards before C11}}
  14                                     ext-warning {{'_Thread_local' is a C11 extension}}
  15                                   */
  16   _Alignas(8) char c;            /* compat-warning {{'_Alignas' is incompatible with C standards before C11}}
  17                                     ext-warning {{'_Alignas' is a C11 extension}}
  18                                   */
  19   _Atomic int i1;                /* compat-warning {{'_Atomic' is incompatible with C standards before C11}}
  20                                     ext-warning {{'_Atomic' is a C11 extension}}
  21                                   */
  22   _Atomic(int) i2;               /* compat-warning {{'_Atomic' is incompatible with C standards before C11}}
  23                                     ext-warning {{'_Atomic' is a C11 extension}}
  24                                   */
  25
  26   _Static_assert(1, "");         /* compat-warning {{'_Static_assert' is incompatible with C standards before C11}}
  27                                     ext-warning {{'_Static_assert' is a C11 extension}}
  28                                   */
  29
  30   (void)_Generic(1, int : 1);    /* compat-warning {{'_Generic' is incompatible with C standards before C11}}
  31                                     ext-warning {{'_Generic' is a C11 extension}}
  32                                   */
  33   (void)_Alignof(int);           /* compat-warning {{'_Alignof' is incompatible with C standards before C11}}
  34                                     ext-warning {{'_Alignof' is a C11 extension}}
  35                                   */
  36 }
  37