Initial commit: Go 1.23 release state

test/typeparam/issue48185b.dir/a.go

@@ -0,0 +1,37 @@
+// 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 a
+
+import (
+	"reflect"
+	"sync"
+)
+
+type addressableValue struct{ reflect.Value }
+
+type arshalers[Options, Coder any] struct {
+	fncVals  []typedArshaler[Options, Coder]
+	fncCache sync.Map // map[reflect.Type]unmarshaler
+}
+type typedArshaler[Options, Coder any] struct {
+	typ reflect.Type
+	fnc func(Options, *Coder, addressableValue) error
+}
+
+type UnmarshalOptions1 struct {
+	// Unmarshalers is a list of type-specific unmarshalers to use.
+	Unmarshalers *arshalers[UnmarshalOptions1, Decoder1]
+}
+
+type Decoder1 struct {
+}
+
+func (a *arshalers[Options, Coder]) lookup(fnc func(Options, *Coder, addressableValue) error, t reflect.Type) func(Options, *Coder, addressableValue) error {
+	return fnc
+}
+
+func UnmarshalFuncV2[T any](fn func(UnmarshalOptions1, *Decoder1, T) error) *arshalers[UnmarshalOptions1, Decoder1] {
+	return &arshalers[UnmarshalOptions1, Decoder1]{}
+}

test/typeparam/issue48185b.dir/main.go

@@ -0,0 +1,18 @@
+// 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 (
+	"./a"
+	"fmt"
+)
+
+func main() {
+	_ = a.UnmarshalOptions1{
+		Unmarshalers: a.UnmarshalFuncV2(func(opts a.UnmarshalOptions1, dec *a.Decoder1, val *interface{}) (err error) {
+			return fmt.Errorf("error")
+		}),
+	}
+}