gcc/testsuite/gcc.dg/c11-align-5.c

   1 /* Test C11 alignment support.  Test invalid code.  */
   2 /* { dg-do compile } */
   3 /* { dg-options "-std=c11 -pedantic-errors" } */
   4
   5 void foo (int []);
   6 void bar1 (int [_Alignas (double) 10]); /* { dg-error "expected expression before" } */
   7 void bar2 (int [static _Alignas (double) 10]); /* { dg-error "expected expression before" } */
   8 void bar3 (int [static const _Alignas (double) 10]); /* { dg-error "expected expression before" } */
   9 void bar4 (int [const _Alignas (double) 10]); /* { dg-error "expected expression before" } */
  10 void bar5 (int [_Alignas (0) *]); /* { dg-error "expected expression before" } */
  11
  12 void foo (int a[_Alignas (0) 10]) { } /* { dg-error "expected expression before" } */
  13
  14 void
  15 test (void)
  16 {
  17   int *_Alignas (long) p; /* { dg-error "expected" } */
  18   int *const _Alignas (long) *q; /* { dg-error "expected" } */
  19   struct s { int n; };
  20   __builtin_offsetof (struct s _Alignas (int), n); /* { dg-error "expected" } */
  21   __typeof (long double _Alignas (0)) e; /* { dg-error "expected" } */
  22   sizeof (int _Alignas (int)); /* { dg-error "specified for type name" } */
  23   _Alignas (int _Alignas (float)) int t; /* { dg-error "expected" } */
  24   __builtin_types_compatible_p (signed _Alignas (0), unsigned); /* { dg-error "expected" } */
  25   int a[_Alignas (int) 10]; /* { dg-error "expected expression before" } */
  26   int b[10];
  27   foo (b);
  28 }