- StgNat32 gen; /* generation */
- StgNat32 step; /* step */
- StgNat32 blocks; /* no. of blocks (if grp head, 0 otherwise) */
+ struct _generation *gen; /* generation */
+ struct _step *step; /* step */
+ StgWord32 blocks; /* no. of blocks (if grp head, 0 otherwise) */
+ StgWord32 evacuated; /* block is in to-space */