| /* Test diagnostics for arithmetic on void and function pointers. |
| Test with -Wpointer-arith. */ |
| /* Origin: Joseph Myers <joseph@codesourcery.com> */ |
| /* { dg-do compile } */ |
| /* { dg-options "-Wpointer-arith" } */ |
| |
| void *p; |
| void (*f)(void); |
| |
| void |
| g (void) |
| { |
| p + 0; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */ |
| p + 1; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */ |
| 0 + p; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */ |
| 1 + p; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */ |
| p - 0; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */ |
| p - 1; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */ |
| p += 0; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */ |
| p += 1; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */ |
| p -= 0; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */ |
| p -= 1; /* { dg-warning "pointer of type 'void \\*' used in arithmetic" } */ |
| f + 0; /* { dg-warning "pointer to a function used in arithmetic" } */ |
| f + 1; /* { dg-warning "pointer to a function used in arithmetic" } */ |
| 0 + f; /* { dg-warning "pointer to a function used in arithmetic" } */ |
| 1 + f; /* { dg-warning "pointer to a function used in arithmetic" } */ |
| f - 0; /* { dg-warning "pointer to a function used in arithmetic" } */ |
| f - 1; /* { dg-warning "pointer to a function used in arithmetic" } */ |
| f += 0; /* { dg-warning "pointer to a function used in arithmetic" } */ |
| f += 1; /* { dg-warning "pointer to a function used in arithmetic" } */ |
| f -= 0; /* { dg-warning "pointer to a function used in arithmetic" } */ |
| f -= 1; /* { dg-warning "pointer to a function used in arithmetic" } */ |
| p[0]; /* { dg-warning "dereferencing 'void \\*' pointer" } */ |
| /* { dg-warning "pointer of type 'void \\*' used in arithmetic" "array 1" { target *-*-* } .-1 } */ |
| 0[p]; /* { dg-warning "dereferencing 'void \\*' pointer" } */ |
| /* { dg-warning "pointer of type 'void \\*' used in arithmetic" "array 1" { target *-*-* } .-1 } */ |
| f[0]; /* { dg-error "subscripted value is pointer to function" } */ |
| 0[f]; /* { dg-error "subscripted value is pointer to function" } */ |
| p - p; /* { dg-warning "pointer of type 'void \\*' used in subtraction" } */ |
| f - f; /* { dg-warning "pointer to a function used in subtraction" } */ |
| } |