how to force constants into hconst

I am having a bit of a problem with constant arrays on the ds80c400 i.e. char y[] = {1,2,3,4};

Note: the ds80c400 has a 16M contiguous memory map.

example 1:
in the following code the array is placed in segment CONST.

#include <stdio.h>
char foo (int x)
{
  char y[] = { 1,2,3,4};
  return(y[x]);
}

#include <stdio.h>
char foo (int x)
{
  char y[] = { 1,2,3,4};
  printf("1234%d",1);
  return(y[x]);
}