if func g calls f, and f is re-defined, g must use the new not the old version of f.

[glycerine]

The following program sample.go triggers an unexpected result

Basic correctness for an interpreter must allow 
func to be re-defined. All calls to the func must 
use the latest version.

On go1.23.3 darwin/amd64
yaegi v0.16.1

~~~
$ go install github.com/traefik/yaegi/cmd/yaegi@latest
go: downloading github.com/traefik/yaegi v0.16.1
$ yaegi
> func f(a, b int) int { return a + b } // start with addition
: 0xc00012f920
> f(2,3)
: 5
> func g() int { return f(2,3) }
: 0xc00068fa50
> g()
: 5
> func f(a, b int) int { return a * b } // <<- new! multiplication!
: 0xc000034c00
> g()
: 5
> 
~~~

Expected result

2 * 3 is 6, not 5. The func g is still calling the stale definition of func f.

Got

See above.

Yaegi Version

v0.16.1

Additional Notes

No response