gcc/testsuite/gcc.dg/Wc99-c11-compat-5.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-std=gnu11 -Wc99-c11-compat" } */
   3
   4 __extension__ struct S { int i; struct { int a; }; };
   5 __extension__ _Noreturn void foo (void);
   6 typedef int A;
   7 __extension__ typedef int A;
   8 __extension__ _Thread_local int i;
   9 __extension__ _Static_assert (1, "foo");
  10 __extension__ _Atomic int a;
  11 __extension__ _Alignas (int) int aa;
  12 enum e { E = __extension__ _Alignof (double) };
  13
  14 void
  15 fn (int n)
  16 {
  17   __extension__ _Generic (n, int: 0);
  18 }