package main

import (
    `fmt`

    `github.com/bytedance/sonic`
)

var V int

var Obj map[string]string

func init() {
    if err := sonic.UnmarshalString(`{"a":"b"}`, &Obj); err != nil {
        panic(err)
    }
}

func F() { fmt.Printf("Hello, number %d\n", V) }

func Unmarshal(json string, val interface{}) error {
    return sonic.UnmarshalString(json, val)
}