--- /dev/null
+// compile
+
+// Copyright 2023 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
+
+type explainer struct {
+ m map[string]string
+}
+
+func init() {
+ RegisterExplainer(newExplainer())
+}
+
+type Explainer interface {
+ Name() string
+ Map() map[string]string
+}
+
+func (e explainer) Name() string {
+ return "HelloWorldExplainer"
+}
+
+func (e explainer) Map() map[string]string {
+ return e.m
+}
+
+//go:noinline
+func newExplainer() explainer {
+ m := make(map[string]string)
+ m["Hello"] = "World!"
+ return explainer{m}
+}
+
+var explainers = make(map[string]Explainer)
+
+func RegisterExplainer(e Explainer) {
+ explainers[e.Name()] = e
+}
+
+func main() {
+
+}