extern unsigned int RTS_VAR(alloc_blocks_lim);
extern StgWord RTS_VAR(weak_ptr_list);
extern StgWord RTS_VAR(atomic_modify_mutvar_mutex);
extern unsigned int RTS_VAR(alloc_blocks_lim);
extern StgWord RTS_VAR(weak_ptr_list);
extern StgWord RTS_VAR(atomic_modify_mutvar_mutex);