// run

// Copyright 2020 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.

// Issue 39625.
package main

import "io/ioutil"

func F[T1, T2 any](f func(T1) (T2, error)) {}

func main() {
	F(ioutil.ReadAll)
}