gcc/testsuite/gcc.dg/Wc99-c11-compat-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-std=gnu90 -pedantic -Wc99-c11-compat" } */
   3
   4 struct S { int i; struct { int a; }; }; /* { dg-warning "ISO C90 doesn.t support unnamed structs/unions" } */
   5 _Noreturn void foo (void); /* { dg-warning "ISO C90 does not support ._Noreturn." } */
   6 typedef int A;
   7 typedef int A; /* { dg-warning "redefinition of typedef .A." } */
   8 _Thread_local int i; /* { dg-warning "ISO C90 does not support ._Thread_local." } */
   9 _Static_assert (1, "foo"); /* { dg-warning "ISO C90 does not support ._Static_assert." } */
  10 _Atomic int a; /* { dg-warning "ISO C90 does not support the ._Atomic. qualifier" } */
  11 _Alignas (int) int aa; /* { dg-warning "ISO C90 does not support ._Alignas." } */
  12 enum e { E = _Alignof (double) }; /* { dg-warning "ISO C90 does not support ._Alignof." } */
  13
  14 void
  15 fn (int n)
  16 {
  17   _Generic (n, int: 0); /* { dg-warning "ISO C90 does not support ._Generic." } */
  18 }