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// run
// Copyright 2018 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 (
"runtime"
"strings"
)
type Func func()
func (f Func) Foo() {
if f != nil {
f()
}
}
func (f Func) Bar() {
if f != nil {
f()
}
buf := make([]byte, 4000)
n := runtime.Stack(buf, true)
s := string(buf[:n])
if strings.Contains(s, "-fm") {
panic("wrapper present in stack trace:\n" + s)
}
}
func main() {
foo := Func(func() {})
foo = foo.Bar
foo.Foo()
}
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