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// run -gcflags="-G=3"
// Copyright 2021 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
import (
"encoding/json"
)
type A[T any] struct {
F1 string `json:"t1"`
F2 T `json:"t2"`
B B `json:"t3"`
}
type B struct {
F4 int `json:"t4"`
}
func a[T any]() {
data := `{"t1":"1","t2":2,"t3":{"t4":4}}`
a1 := A[T]{}
if err := json.Unmarshal([]byte(data), &a1); err != nil {
panic(err)
}
if bytes, err := json.Marshal(&a1); err != nil {
panic(err)
} else if string(bytes) != data {
panic(string(bytes))
}
}
func main() {
a[int]()
}
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