ref: ae2384b1273840d7633812d793895dace0d79683
dir: /include/u.h/
#pragma once
#define nil ((void*)0x0)
typedef int size_t;
typedef unsigned char uint8;
typedef char int8;
typedef unsigned short uint16;
typedef short int16;
typedef unsigned long uint32;
typedef long int32;
typedef struct
{
void *val;
void *next;
}ll_t;