regression - jsoniter crash with interface type in struct as against std json

[sreekanth-cb]

This is a regression and was not observed until fdfe0b9 19 Sep, But some changes went after that caused this regression. Please check the sample program.

package main

import (
	"encoding/json"
	"fmt"
	jsoniter "github.com/json-iterator/go"
)

func jsoniterMarshal(input Result) {
	bb, err := jsoniter.ConfigCompatibleWithStandardLibrary.Marshal(&input)
	if err != nil {
		fmt.Printf("JSONITER Error %v \n", err)
		return
	}
	fmt.Printf("JSONITER Res %s  \n", bb)
}

func jsonMarshal(input Result) {
	bb, err := json.Marshal(&input)
	if err != nil {
		fmt.Printf("JSON Error %v \n", err)
		return
	}
	fmt.Printf("JSON Res %s  \n", bb)
}

type ErrMap map[string]error

type Status struct {
	Total   int    `json:"total"`
	ErrMaps ErrMap `json:"errMaps,omitempty"`
}

type Request interface {

}

type Result struct {
	Name string `json:"name"`
	Reqs Request `json:"Reqs"`
	ResultStatus Status `json:"resultStatus"`
}
 
func (iem ErrMap) MarshalJSON() ([]byte, error) {
	tmp := make(map[string]string, len(iem))
	for k, v := range iem {
		tmp[k] = v.Error()
	}
	return json.Marshal(tmp)
}



func main() {
	eMap := make(ErrMap, 2)
	eMap["first"] = fmt.Errorf("First Error")
	eMap["second"] = fmt.Errorf("Second Error")
	s := Status{Total: 100,
		ErrMaps: eMap}

	res := Result{ Name : "testing", ResultStatus: s, Reqs: string("{\"query\":\"what is this\"}")}
	jsonMarshal(res)
	jsoniterMarshal(res)
}

[taowen]

found the place causing the crash, on the road, do not have the time to fix it today