zerosize_ptr       54 gnulib-tests/test-memchr.c   ASSERT (MEMCHR (zerosize_ptr (), 'a', 0) == NULL);
zerosize_ptr       98 gnulib-tests/test-memchr.c     char *page_boundary = (char *) zerosize_ptr ();
zerosize_ptr       36 gnulib-tests/test-strnlen.c   char *page_boundary = (char *) zerosize_ptr ();