gcc/testsuite/c-c++-common/builtin-arith-overflow-1.c

   1 /* { dg-do compile } */
   2
   3 int
   4 f1 (void)
   5 {
   6   int x = __builtin_add_overflow ();    /* { dg-error "not enough arguments to function" } */
   7   x += __builtin_sub_overflow ();       /* { dg-error "not enough arguments to function" } */
   8   x += __builtin_mul_overflow ();       /* { dg-error "not enough arguments to function" } */
   9   return x;
  10 }
  11
  12 int
  13 f2 (int a, int b, int *c, int d)
  14 {
  15   int x = __builtin_add_overflow (a, b, c, d);  /* { dg-error "too many arguments to function" } */
  16   x += __builtin_sub_overflow (a, b, c, d, d, d);       /* { dg-error "too many arguments to function" } */
  17   x += __builtin_mul_overflow (a, b, c, d);     /* { dg-error "too many arguments to function" } */
  18   return x;
  19 }
  20
  21 enum E { e0 = 0, e1 = 1 };
  22
  23 #ifndef __cplusplus
  24 #define bool _Bool
  25 #endif
  26
  27 int
  28 f3 (float fa, int a, _Complex long int ca, double fb, void *pb, int b, enum E eb, bool bb, int *c)
  29 {
  30   int x = __builtin_add_overflow (fa, b, c);    /* { dg-error "argument 1 in call to function\[^\n\r]*does not have integral type" } */
  31   x += __builtin_sub_overflow (ca, b, c);       /* { dg-error "argument 1 in call to function\[^\n\r]*does not have integral type" } */
  32   x += __builtin_mul_overflow (a, fb, c);       /* { dg-error "argument 2 in call to function\[^\n\r]*does not have integral type" } */
  33   x += __builtin_add_overflow (a, pb, c);       /* { dg-error "argument 2 in call to function\[^\n\r]*does not have integral type" } */
  34   x += __builtin_sub_overflow (a, eb, c);
  35   x += __builtin_mul_overflow (a, bb, c);
  36   return x;
  37 }
  38
  39 int
  40 f4 (float *fp, double *dp, _Complex int *cp, enum E *ep, bool *bp, long long int *llp)
  41 {
  42   int x = __builtin_add_overflow (1, 2, fp);    /* { dg-error "argument 3 in call to function\[^\n\r]*does not have pointer to integer type" } */
  43   x += __builtin_sub_overflow (1, 2, dp);       /* { dg-error "argument 3 in call to function\[^\n\r]*does not have pointer to integer type" } */
  44   x += __builtin_mul_overflow (1, 2, cp);       /* { dg-error "argument 3 in call to function\[^\n\r]*does not have pointer to integer type" } */
  45   x += __builtin_add_overflow (1, 2, ep);       /* { dg-error "argument 3 in call to function\[^\n\r]*does not have pointer to integer type" } */
  46   x += __builtin_sub_overflow (1, 2, bp);       /* { dg-error "argument 3 in call to function\[^\n\r]*does not have pointer to integer type" } */
  47   x += __builtin_mul_overflow (1, 2, llp);
  48   return x;
  49 }