go/test/typeparam/issue48317.go
korzhao 42057e9848 cmd/compile: save the note of fields when translating struct
Fixes #48317

Change-Id: I756ae6253022870071004332dd8f49169307f7e6
Reviewed-on: https://go-review.googlesource.com/c/go/+/349013
Run-TryBot: Dan Scales <danscales@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Dan Scales <danscales@google.com>
Trust: Dan Scales <danscales@google.com>
2021-09-13 21:48:41 +00:00

38 lines
664 B
Go

// 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]()
}