run: 498:22: "undefined type for E"

[LazataknesSoftware]

The following program sample.go triggers an unexpected result

package main

import (
        "fmt"
        "math"
        "slices"
        "flag"
        "strings"
)

func main() {
        nums := map[string]int{"I": 1, "V": 5, "X": 10}
        var II []string
        var NN []int
        var final string = ""
        var num float64
        flag.Float64Var(&num, "n", 10.0, "Number")
        flag.Parse()
        for k, v := range nums {
                II = append(II, k)
                NN = append(NN, v)
        }
        slices.Reverse(II)
        slices.Reverse(NN)
        for _, cycle := range NN {
                t := int(math.Floor(num / float64(cycle)))
                final += strings.Repeat(II[slices.Index(NN, cycle)],
 t)
                num -= float64(cycle * (t))
        }
        fmt.Printf("%v\n", final)
}

Expected result

$ go run ./sample.go -n=11
XI

Got

$ yaegi ./sample.go -n=11
run: 498:22: undefined type for E

Yaegi Version

0.16.1

Additional Notes

OS/Environment: Android 9 Go/Termux Device: ZTE Blade A3 2020 uname -a: "Linux localhost 4.4.147+ #1 SMP PREEMPT Tue Sep 29 02:20:41 CST 2020 armv7l Android" go version: "go version go1.23.2 android/arm"