type conversion and assignment bug

[hesining]

The following program sample.go triggers an unexpected result

package main

import (
	"github.com/traefik/yaegi/interp"
	"log"
)

// Generic example.
func main() {
	// Create a new interpreter context
	i := interp.New(interp.Options{})

	// Run some code: define a new function
	_, err := i.Eval("var cc interface{}")
	if err != nil {
		log.Fatal(err)
	}

	// Access the interpreted f function with Eval
	_, err = i.Eval("cc = 1")
	if err != nil {
		log.Fatal(err)
	}

	_, err = i.Eval("dd := cc.(int)")
	if err != nil {
		log.Fatal(err)
	}
}

Expected result

nothing

Got

1:34: type definition not implemented: typeAssertExpr

Yaegi Version

v0.15.1

Additional Notes

Is the problem caused by type conversion and assignment at the same time ？

[mvertes]

Th same program in a script sample.go works ok:

package main

func main() {
    var cc interface{}
    cc = 1
    dd := cc.(int)
    println(dd)
}

$ yaegi ./sample.go
1

The difference is that Eval() is called multiple times in your case instead of one.