/* Test diagnostics for arithmetic on void and function pointers. Test with -pedantic. */ /* Origin: Joseph Myers <joseph@codesourcery.com> */ /* { dg-do compile } */ /* { dg-options "-pedantic" } */ void *p; void (*f)(void); void g (void) { p + 0; /* { dg-warning "warning: pointer of type 'void \\*' used in arithmetic" } */ p + 1; /* { dg-warning "warning: pointer of type 'void \\*' used in arithmetic" } */ 0 + p; /* { dg-warning "warning: pointer of type 'void \\*' used in arithmetic" } */ 1 + p; /* { dg-warning "warning: pointer of type 'void \\*' used in arithmetic" } */ p - 0; /* { dg-warning "warning: pointer of type 'void \\*' used in arithmetic" } */ p - 1; /* { dg-warning "warning: pointer of type 'void \\*' used in arithmetic" } */ p += 0; /* { dg-warning "warning: pointer of type 'void \\*' used in arithmetic" } */ p += 1; /* { dg-warning "warning: pointer of type 'void \\*' used in arithmetic" } */ p -= 0; /* { dg-warning "warning: pointer of type 'void \\*' used in arithmetic" } */ p -= 1; /* { dg-warning "warning: pointer of type 'void \\*' used in arithmetic" } */ f + 0; /* { dg-warning "warning: pointer to a function used in arithmetic" } */ f + 1; /* { dg-warning "warning: pointer to a function used in arithmetic" } */ 0 + f; /* { dg-warning "warning: pointer to a function used in arithmetic" } */ 1 + f; /* { dg-warning "warning: pointer to a function used in arithmetic" } */ f - 0; /* { dg-warning "warning: pointer to a function used in arithmetic" } */ f - 1; /* { dg-warning "warning: pointer to a function used in arithmetic" } */ f += 0; /* { dg-warning "warning: pointer to a function used in arithmetic" } */ f += 1; /* { dg-warning "warning: pointer to a function used in arithmetic" } */ f -= 0; /* { dg-warning "warning: pointer to a function used in arithmetic" } */ f -= 1; /* { dg-warning "warning: pointer to a function used in arithmetic" } */ p[0]; /* { dg-warning "warning: dereferencing 'void \\*' pointer" } */ /* { dg-warning "warning: pointer of type 'void \\*' used in arithmetic" "array 1" { target *-*-* } 33 } */ 0[p]; /* { dg-warning "warning: dereferencing 'void \\*' pointer" } */ /* { dg-warning "warning: pointer of type 'void \\*' used in arithmetic" "array 1" { target *-*-* } 35 } */ f[0]; /* { dg-error "error: subscripted value is pointer to function" } */ 0[f]; /* { dg-error "error: subscripted value is pointer to function" } */ p - p; /* { dg-warning "warning: pointer of type 'void \\*' used in subtraction" } */ f - f; /* { dg-warning "warning: pointer to a function used in subtraction" } */ }