golang a 代码
文件路径：/test/fixedbugs/issue44325.dir/a.go
// 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
func FM() func() {
return func() {
_ = func() int {
return 0
}
}
}