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/* 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 *-*-* } 33 } */
0[p]; /* { dg-warning "dereferencing 'void \\*' pointer" } */
/* { dg-warning "pointer of type 'void \\*' used in arithmetic" "array 1" { target *-*-* } 35 } */
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" } */
}
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