gcc/testsuite/c-c++-common/ubsan/null-11.c

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

struct S {
  int i;
};

int
main (void)
{
  struct S **s = 0;
  return (*s)->i;
}

/* { dg-output "load of null pointer of type 'struct S \\*'" } */