validation/constexpr-pointer-arith.c

   1 static int a = 1;
   2 static int b[2] = {1, 1};
   3
   4 static int *c = &b[1];                                  // OK
   5 static int *d = (int*)0 + 1;                            // OK
   6 static int *e = &b[1] + 1;                              // OK
   7 static int *f = b + 1;                                  // OK
   8 static int *g = d + 1;                                  // KO
   9 static int *h = &a + 1;                         // OK
  10 static int *i = &b[1] + 1;                              // OK
  11 static int *j = b + 1;                                  // OK
  12 static int *k = d + 1;                                  // KO
  13 static int *l = &*&b[1];                                // OK
  14 static int *m = &*(&a + 1);                             // OK
  15 static int *n = &*(&b[1] + 1);                          // OK
  16 static int *o = &*(b + 1);                              // OK
  17 static int *p = &*(d + 1);                              // KO
  18
  19 /*
  20  * check-name: pointer arithmetic constness verification.
  21  * check-command: sparse -Wconstexpr-not-const $file
  22  *
  23  * check-error-start
  24 constexpr-pointer-arith.c:8:19: warning: non-constant initializer for static object
  25 constexpr-pointer-arith.c:12:19: warning: non-constant initializer for static object
  26 constexpr-pointer-arith.c:17:22: warning: non-constant initializer for static object
  27  * check-error-end
  28  */