#include <config.h>
#include <stdlib.h>
-#include <libpspp/alloc.h>
#include <libpspp/compiler.h>
#include <libpspp/hash.h>
#include "group.h"
#include <data/variable.h>
#include <libpspp/misc.h>
+#include "xalloc.h"
/* Return -1 if the id of a is less than b; +1 if greater than and
0 if equal */