It panics when append functions into a slice of that type of function

[PatriotBo]

The following program sample.go triggers an unexpected result

package main

import (
	"fmt"

	"github.com/traefik/yaegi/interp"
	"github.com/traefik/yaegi/stdlib"
)

var funcs = `
package main

import "fmt"

func AppendSlice() {
	type funcType func()

	var fs []funcType
	fs = append(fs, a)

	for _, f := range fs {
		f()
	}
}

func a(){
	fmt.Println("execute func a")
}`

func main(){
	engine := interp.New(interp.Options{})
	// 引入标准库
	if err := engine.Use(stdlib.Symbols); err != nil {
		panic(err)
	}

	_, err := engine.Eval(funcs)
	if err != nil {
		fmt.Printf("evel funcs failed:%v \n", err)
		return
	}

	v, err := engine.Eval("main.AppendSlice")
	if err != nil {
		fmt.Printf("evel main.AppendSlice failed:%v \n", err)
		return
	}

	f, ok := v.Interface().(func())
	if !ok {
		fmt.Println("func not type of metadataudf.UserDefineFunc ")
		return
	}
	f()
}

Expected result

go run main.go

Got

7:2: panic
panic: reflect.Set: value of type *interp.node is not assignable to type func() [recovered]
        panic: reflect.Set: value of type *interp.node is not assignable to type func()

Yaegi Version

v0.15.1

Additional Notes

No response