/* for access to private vec members */
#include <petsc/private/viewerimpl.h>

/* forward declare */
void extractFunc(PetscViewer, void **);

void testOutOfLineReference(PetscViewer v, PetscViewer v2) {
  /* linter should be able to connect all of these to v */
  void  *foo  = v->data, *bar, *baz, *blop;
  void **blip = &v->data;

  bar  = v->data;
  blop = blip[0];
  extractFunc(v, &baz);

  /* incorrect */
  PetscValidPointer(foo, -1);
  PetscValidPointer(bar, -2);
  PetscValidPointer(baz, -3);
  PetscValidPointer((void *)v->data, -4);
  PetscValidPointer(*blip, -5);
  PetscValidPointer(blop, -6);

  /* correct */
  PetscValidPointer(foo, 1);
  PetscValidPointer(bar, 1);
  PetscValidPointer(baz, 1);
  PetscValidPointer((void *)v->data, 1);
  PetscValidPointer(*blip, 1);
  PetscValidPointer(blop, 1);
  return;
}