#endif
bdescr *allocBlock_sync(void);
+void freeChain_sync(bdescr *bd);
void push_scan_block (bdescr *bd, step_workspace *ws);
bdescr *grab_todo_block (step_workspace *ws);
-bdescr *gc_alloc_todo_block (step_workspace *ws);
+StgPtr gc_alloc_todo_block (step_workspace *ws);
bdescr *gc_alloc_scavd_block (step_workspace *ws);
// Returns true if a block is 3/4 full. This predicate is used to try