ref: 640caa73c7b211720c1ffa5cd81aba2ea63cb130
dir: /lib/c/malloc.h/
#include <stdlib.h>
/* minimum amount of required units */
#define NALLOC 10000
typedef union header Header;
union header {
struct hdr {
Header *next;
size_t size;
} h;
/* most restrictive type fixes the union size for alignment */
_ALIGNTYPE most;
};
extern void *_prevchunk(Header *hp);