gcc/testsuite/c-c++-common/ubsan/null-7.c

/* { dg-do run } */
/* { dg-options "-fsanitize=null -w" } */
/* { dg-shouldfail "ubsan" } */

int *
gao (void)
{
  return 0;
}

int
main (void)
{
  return *gao ();
}

/* { dg-output "load of null pointer of type 'int'" } */