issue: nil pointer of struct which has supported-type-fields returns error

[AsterDY]

reason

• *http.Request has unsupported type fields like GetBody func() (io.ReadCloser, error), but the passed obj is nil, thus std think it is a nil pointer and encode it as nothing, while sonic report error when compiling the ptr type

codes

import (
	"encoding/json"
	"net/http"
	"testing"

	"github.com/bytedance/sonic"
	jsoniter "github.com/json-iterator/go"
	"github.com/stretchr/testify/assert"
)

type Context struct {
	*http.Request
}


func TestContext(t *testing.T) {
	var obj = new(Context)
	out, err := sonic.Marshal(obj)
	out1, err1 := jsoniter.Marshal(obj)
	out2, err2 := json.Marshal(obj)
	println(string(out2))
	assert.Equal(t, err2 ==nil, err1 ==nil)
	assert.Equal(t, err2 ==nil, err ==nil)
	assert.Equal(t, out2, out1)
	assert.Equal(t, out2, out)
	// err = sonic.Unmarshal(out, obj)
	// if err != nil {
	// 	t.Fatal(err)
	// }
}

result

--- FAIL: TestContext (0.02s)
        	Error:      	Not equal: 
        	            	expected: true
        	            	actual  : false
        	Test:       	TestContext
        	Error:      	Not equal: 
        	            	expected: []byte{0x7b, 0x7d}
        	            	actual  : []byte(nil)
        	            	
        	            	Diff:
        	            	--- Expected
        	            	+++ Actual
        	            	@@ -1,4 +1,2 @@
        	            	-([]uint8) (len=2) {
        	            	- 00000000  7b 7d                                             |{}|
        	            	-}
        	            	+([]uint8) <nil>
        	            	 
        	Test:       	TestContext
FAIL