ref: a48827d1fd9dc95d033554b8d7da9f70b00fc892
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;