gcc/testsuite/gcc.dg/c11-static-assert-3.c

   1 /* Test C11 static assertions.  Invalid assertions.  */
   2 /* { dg-do compile } */
   3 /* { dg-options "-std=c11 -pedantic-errors" } */
   4
   5 _Static_assert (__INT_MAX__ * 2, "overflow"); /* { dg-warning "integer overflow in expression" } */
   6 /* { dg-error "overflow in constant expression" "error" { target *-*-* } .-1 } */
   7
   8 _Static_assert ((void *)(__SIZE_TYPE__)16, "non-integer"); /* { dg-error "not an integer" } */
   9
  10 _Static_assert (1.0, "non-integer"); /* { dg-error "not an integer" } */
  11
  12 _Static_assert ((int)(1.0 + 1.0), "non-constant-expression"); /* { dg-error "not an integer constant expression" } */
  13
  14 int i;
  15
  16 _Static_assert (i, "non-constant"); /* { dg-error "not constant" } */
  17
  18 void
  19 f (void)
  20 {
  21   int j = 0;
  22   for (_Static_assert (sizeof (struct s { int k; }), ""); j < 10; j++) /* { dg-error "loop initial declaration" } */
  23     ;
  24 }
  25
  26 _Static_assert (1, 1); /* { dg-error "expected" } */
  27
  28 _Static_assert (1, ("")); /* { dg-error "expected" } */