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-rw-r--r--test/typeparam/issue50690c.go50
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diff --git a/test/typeparam/issue50690c.go b/test/typeparam/issue50690c.go
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+++ b/test/typeparam/issue50690c.go
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+// run
+
+// Copyright 2022 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 (
+ "fmt"
+)
+
+type Printer[T ~string] struct {
+ PrintFn func(T)
+}
+
+func Print[T ~string](s T) {
+ fmt.Println(s)
+}
+
+func PrintWithPrinter[T ~string, S interface {
+ ~struct {
+ ID T
+ PrintFn_ func(T)
+ }
+ PrintFn() func(T)
+}](message T, obj S) {
+ obj.PrintFn()(message)
+}
+
+func main() {
+ PrintWithPrinter(
+ "Hello, world.",
+ StructWithPrinter{ID: "fake", PrintFn_: Print[string]},
+ )
+}
+
+type StructWithPrinter struct {
+ ID string
+ PrintFn_ func(string)
+}
+
+// Field accesses through type parameters are disabled
+// until we have a more thorough understanding of the
+// implications on the spec. See issue #51576.
+// Use accessor method instead.
+
+func (s StructWithPrinter) PrintFn() func(string) {
+ return s.PrintFn_
+}