marshal reflect.ValueOf panic

[dongjiang1989]

package codec_test

import (
	"reflect"
	"testing"

	"github.com/stretchr/testify/assert"
	"github.com/vmihailenco/msgpack/v5"
)

type Data struct {
	A interface{} `json:"a"`
}

func TestMSGPack(t *testing.T) {
	assert := assert.New(t)
	key := new(int)
	*key = 1
	data := &Data{
		A: map[string]interface{}{
			"key": reflect.ValueOf(key),
		},
	}
	te, err := msgpack.Marshal(data)
	assert.Nil(err)
	b := new(Data)
	err = msgpack.Unmarshal(te, b)
	assert.Nil(err)
	assert.Equal(b, &Data{
		A: map[string]interface{}{
			"key": map[string]interface{}{},
		},
	})
}

panic:

=== RUN   TestMSGPack
--- FAIL: TestMSGPack (0.00s)
panic: runtime error: invalid memory address or nil pointer dereference [recovered]
	panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x11b957a]

goroutine 19 [running]:
testing.tRunner.func1.2({0x11ddd00, 0x13a59e0})
	/opt/homebrew/Cellar/go/1.19.4/libexec/src/testing/testing.go:1396 +0x24e
testing.tRunner.func1()
	/opt/homebrew/Cellar/go/1.19.4/libexec/src/testing/testing.go:1399 +0x39f
panic({0x11ddd00, 0x13a59e0})
	/opt/homebrew/Cellar/go/1.19.4/libexec/src/runtime/panic.go:884 +0x212
github.com/vmihailenco/msgpack/v5.(*field).EncodeValue(0xc00012ac80, 0xc00011a2a0, {0x120d3e0?, 0xc000126330?, 0x0?})
	/Users/dongjiang/Documents/go/pkg/mod/github.com/vmihailenco/msgpack/[email protected]/types.go:113 +0x5a
github.com/vmihailenco/msgpack/v5.encodeStructValue(0xc00011a2a0, {0x120d3e0?, 0xc000126330?, 0x500000000000008?})
	/Users/dongjiang/Documents/go/pkg/mod/github.com/vmihailenco/msgpack/[email protected]/encode_map.go:161 +0x17b
github.com/vmihailenco/msgpack/v5.(*Encoder).EncodeValue(0xc000056b20?, {0x120d3e0?, 0xc000126330?, 0x120e2fb?})
	/Users/dongjiang/Documents/go/pkg/mod/github.com/vmihailenco/msgpack/[email protected]/encode.go:239 +0x84
github.com/vmihailenco/msgpack/v5.(*Encoder).Encode(0xc000115440?, {0x120d3e0?, 0xc000126330?})
	/Users/dongjiang/Documents/go/pkg/mod/github.com/vmihailenco/msgpack/[email protected]/encode.go:225 +0x30b
github.com/vmihailenco/msgpack/v5.(*Encoder).EncodeMap(0xc00011a2a0, 0xc000115440)
	/Users/dongjiang/Documents/go/pkg/mod/github.com/vmihailenco/msgpack/[email protected]/encode_map.go:81 +0x125
github.com/vmihailenco/msgpack/v5.encodeMapStringInterfaceValue(0xc00011a2a0, {0x11dce60?, 0xc000115440?, 0x194?})
	/Users/dongjiang/Documents/go/pkg/mod/github.com/vmihailenco/msgpack/[email protected]/encode_map.go:67 +0xe7
github.com/vmihailenco/msgpack/v5.(*Encoder).EncodeValue(0x11d8800?, {0x11dce60?, 0xc000115440?, 0xc00012aac0?})
	/Users/dongjiang/Documents/go/pkg/mod/github.com/vmihailenco/msgpack/[email protected]/encode.go:239 +0x84
github.com/vmihailenco/msgpack/v5.encodeInterfaceValue(0xc00011a2a0, {0x11d8800?, 0xc0001110e0?, 0xc00011c9c8?})
	/Users/dongjiang/Documents/go/pkg/mod/github.com/vmihailenco/msgpack/[email protected]/encode_value.go:179 +0xae
github.com/vmihailenco/msgpack/v5.(*field).EncodeValue(0xc00012ab40, 0xc00011a2a0, {0x11e3e80?, 0xc0001110e0?, 0x0?})
	/Users/dongjiang/Documents/go/pkg/mod/github.com/vmihailenco/msgpack/[email protected]/types.go:113 +0x6d
github.com/vmihailenco/msgpack/v5.encodeStructValue(0xc00011a2a0, {0x11e3e80?, 0xc0001110e0?, 0xc000111150?})
	/Users/dongjiang/Documents/go/pkg/mod/github.com/vmihailenco/msgpack/[email protected]/encode_map.go:161 +0x17b
github.com/vmihailenco/msgpack/v5.ptrEncoderFunc.func1(0xc00011a2a0, {0x11cb180?, 0xc0001110e0?, 0x297469b8?})
	/Users/dongjiang/Documents/go/pkg/mod/github.com/vmihailenco/msgpack/[email protected]/encode_value.go:129 +0xc2
github.com/vmihailenco/msgpack/v5.(*Encoder).EncodeValue(0xc000044610?, {0x11cb180?, 0xc0001110e0?, 0x1205a80?})
	/Users/dongjiang/Documents/go/pkg/mod/github.com/vmihailenco/msgpack/[email protected]/encode.go:239 +0x84
github.com/vmihailenco/msgpack/v5.(*Encoder).Encode(0x13a6c00?, {0x11cb180?, 0xc0001110e0?})
	/Users/dongjiang/Documents/go/pkg/mod/github.com/vmihailenco/msgpack/[email protected]/encode.go:225 +0x30b
github.com/vmihailenco/msgpack/v5.Marshal({0x11cb180, 0xc0001110e0})
	/Users/dongjiang/Documents/go/pkg/mod/github.com/vmihailenco/msgpack/[email protected]/encode.go:66 +0x165
github.com/kubeservice-stack/demo/msgpack_test.TestMSGPack(0x0?)
	/Users/dongjiang/Documents/go/src/github.com/kubeservice-stack/demo/msgpack/msgpack_test.go:24 +0x1c6
testing.tRunner(0xc000105040, 0x12388d8)
	/opt/homebrew/Cellar/go/1.19.4/libexec/src/testing/testing.go:1446 +0x10b
created by testing.(*T).Run
	/opt/homebrew/Cellar/go/1.19.4/libexec/src/testing/testing.go:1493 +0x35f
exit status 2
FAIL	github.com/kubeservice-stack/demo/msgpack	0.476s

golang: 1.19.4
os: mac os 13.2.1 (22D68)