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/* Test diagnostics for arithmetic on void and function pointers.

   Test with no special options.  */

/* Origin: Joseph Myers <joseph@codesourcery.com> */

/* { dg-do compile } */

/* { dg-options "" } */

void *p;

void (*f)(void);

void

g (void)

{

  p + 0;

  p + 1;

  1 + p;

  p - 0;

  p - 1;

  p += 0;

  p += 1;

  p -= 0;

  p -= 1;

  f + 0;

  f + 1;

  1 + f;

  f - 0;

  f - 1;

  f += 0;

  f += 1;

  f -= 0;

  f -= 1;

  p[0]; /* { dg-warning "warning: dereferencing 'void \\*' pointer" } */

  0[p]; /* { dg-warning "warning: dereferencing 'void \\*' pointer" } */

  f[0]; /* { dg-error "error: subscripted value is pointer to function" } */

  0[f]; /* { dg-error "error: subscripted value is pointer to function" } */

  p - p;

  f - f;

}