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;