VIRTUAL char* savepvn _((char* sv, I32 len));
VIRTUAL void savestack_grow _((void));
VIRTUAL void save_aelem _((AV* av, I32 idx, SV **sptr));
+VIRTUAL I32 save_alloc _((I32 size, I32 pad));
VIRTUAL void save_aptr _((AV** aptr));
VIRTUAL AV* save_ary _((GV* gv));
VIRTUAL void save_clearsv _((SV** svp));