scc

 1/* minimum amount of required units */
 2#define NALLOC 16
 3
 4typedef union header Header;
 5union header {
 6	struct hdr {
 7		Header *next;
 8		size_t size;
 9	} h;
10	/* most restrictive type fixes the union size for alignment */
11	_ALIGNTYPE most;
12};
13
14void *_prevchunk(Header *);
15
16extern Header *_freep;