gcc/testsuite/gcc.dg/pr65345-3.c

   1 /* PR c/65345 */
   2 /* { dg-options "" } */
   3
   4 _Atomic float i = 3.0f;
   5
   6 float a1 = sizeof (i + 1.2);
   7 float a2 = sizeof (i = 0);
   8 float a3 = sizeof (i++);
   9 float a4 = sizeof (i--);
  10 float a5 = sizeof (-i);
  11
  12 float b1 = _Alignof (i + 1);
  13 float b2 = _Alignof (i = 0);
  14 float b3 = _Alignof (i++);
  15 float b4 = _Alignof (i--);
  16 float b5 = _Alignof (-i);
  17
  18 float c1 = i; /* { dg-error "initializer element is not constant" } */
  19 float c2 = (i ? 1 : 2); /* { dg-error "initializer element is not constant" } */
  20 float c3[(int) i]; /* { dg-error "variably modified" } */
  21 float c4 = 0 || i; /* { dg-error "initializer element is not constant" } */
  22 float c5 = (i += 10); /* { dg-error "initializer element is not constant" } */
  23
  24 _Static_assert (_Generic (i, float: 1, default: 0) == 1, "1");
  25 _Static_assert (_Generic (i + 1, float: 1, default: 0) == 1, "2");
  26 _Static_assert (_Generic (i = 0, float: 1, default: 0) == 1, "3");
  27 _Static_assert (_Generic (i++, float: 1, default: 0) == 1, "4");
  28 _Static_assert (_Generic (i--, float: 1, default: 0) == 1, "5");
  29
  30 _Atomic int sz = 2;
  31 void fn1 (float a[sz + 1]);
  32 void fn2 (float a[sz = 0]);
  33 void fn3 (float a[sz++]);
  34 void fn4 (float a[sz--]);
  35 void fn5 (float a[-sz]);