| 1 |
689 |
jeremybenn |
/* Test diagnostics for arithmetic on void and function pointers.
|
| 2 |
|
|
Test with -Wpointer-arith. */
|
| 3 |
|
|
/* Origin: Joseph Myers <joseph@codesourcery.com> */
|
| 4 |
|
|
/* { dg-do compile } */
|
| 5 |
|
|
/* { dg-options "-Wpointer-arith" } */
|
| 6 |
|
|
|
| 7 |
|
|
void *p;
|
| 8 |
|
|
void (*f)(void);
|
| 9 |
|
|
|
| 10 |
|
|
void
|
| 11 |
|
|
g (void)
|
| 12 |
|
|
{
|
| 13 |
|
|
p + 0; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */
|
| 14 |
|
|
p + 1; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */
|
| 15 |
|
|
|
| 16 |
|
|
1 + p; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */
|
| 17 |
|
|
p - 0; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */
|
| 18 |
|
|
p - 1; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */
|
| 19 |
|
|
p += 0; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */
|
| 20 |
|
|
p += 1; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */
|
| 21 |
|
|
p -= 0; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */
|
| 22 |
|
|
p -= 1; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */
|
| 23 |
|
|
f + 0; /* { dg-warning "pointer to a function used in arithmetic" } */
|
| 24 |
|
|
f + 1; /* { dg-warning "pointer to a function used in arithmetic" } */
|
| 25 |
|
|
|
| 26 |
|
|
1 + f; /* { dg-warning "pointer to a function used in arithmetic" } */
|
| 27 |
|
|
f - 0; /* { dg-warning "pointer to a function used in arithmetic" } */
|
| 28 |
|
|
f - 1; /* { dg-warning "pointer to a function used in arithmetic" } */
|
| 29 |
|
|
f += 0; /* { dg-warning "pointer to a function used in arithmetic" } */
|
| 30 |
|
|
f += 1; /* { dg-warning "pointer to a function used in arithmetic" } */
|
| 31 |
|
|
f -= 0; /* { dg-warning "pointer to a function used in arithmetic" } */
|
| 32 |
|
|
f -= 1; /* { dg-warning "pointer to a function used in arithmetic" } */
|
| 33 |
|
|
p[0]; /* { dg-warning "dereferencing 'void \\*' pointer" } */
|
| 34 |
|
|
/* { dg-warning "pointer of type 'void \\*' used in arithmetic" "array 1" { target *-*-* } 33 } */
|
| 35 |
|
|
0[p]; /* { dg-warning "dereferencing 'void \\*' pointer" } */
|
| 36 |
|
|
/* { dg-warning "pointer of type 'void \\*' used in arithmetic" "array 1" { target *-*-* } 35 } */
|
| 37 |
|
|
f[0]; /* { dg-error "subscripted value is pointer to function" } */
|
| 38 |
|
|
0[f]; /* { dg-error "subscripted value is pointer to function" } */
|
| 39 |
|
|
p - p; /* { dg-warning "pointer of type 'void \\*' used in subtraction" } */
|
| 40 |
|
|
f - f; /* { dg-warning "pointer to a function used in subtraction" } */
|
| 41 |
|
|
}
|
