using non int constant as array dimension

[mvertes]

The following program sample.go triggers an unexpected result

package main

type t1 uint8

const (
        n1 t1 = iota
        n2
)

type T struct {
        elem [n2 + 1]int
}

func main() {
        println(len(T{}.elem))
}

Expected result

$ go run ./sample.go
2

Got

$ yaegi ./sample.go
panic: reflect: call of reflect.Value.Int on uint8 Value

goroutine 1 [running]:
reflect.Value.Int(...)
        reflect/value.go:1459
github.com/traefik/yaegi/interp.nodeType2(0xc0000ed440, 0xc0000e8360, 0xc0003fafc0, {0xc0001a8f30, 0x1, 0x2})
        github.com/traefik/yaegi/interp/type.go:454 +0x79e6
github.com/traefik/yaegi/interp.nodeType2(0xc0000ed440, 0xc0000e8360, 0xc0003fab40, {0xc000014818, 0x0, 0x1})
        github.com/traefik/yaegi/interp/type.go:1034 +0x3b5e
github.com/traefik/yaegi/interp.nodeType(...)
        github.com/traefik/yaegi/interp/type.go:399
github.com/traefik/yaegi/interp.(*Interpreter).gta.func1(0xc0003fa900)
        github.com/traefik/yaegi/interp/gta.go:308 +0x8ea
github.com/traefik/yaegi/interp.(*node).Walk(0xc0003fa900, 0xc00045b910, 0x0)
        github.com/traefik/yaegi/interp/interp.go:288 +0x34
github.com/traefik/yaegi/interp.(*Interpreter).gta(0xc0000ed440, 0xc0003fa900, {0xc0002d6bb0, 0x4}, {0xc0002d6bb0, 0x4}, {0xc0002d6bb0, 0x4})
        github.com/traefik/yaegi/interp/gta.go:20 +0x22b
github.com/traefik/yaegi/interp.(*Interpreter).gtaRetry(0xc0000ed440?, {0xc000187af0?, 0xc0000c8900?, 0xc000187a38?}, {0xc0002d6bb0, 0x4}, {0xc0002d6bb0, 0x4})
        github.com/traefik/yaegi/interp/gta.go:383 +0x154
github.com/traefik/yaegi/interp.(*Interpreter).CompileAST(0xc0000ed440, {0x557cc1815148?, 0xc0000c8900?})
        github.com/traefik/yaegi/interp/program.go:87 +0x17f
github.com/traefik/yaegi/interp.(*Interpreter).compileSrc(0xc0000ed440, {0xc0002a0b40?, 0x0?}, {0x7ffe60aa69d7?, 0xc0002a0b40?}, 0x98?)
        github.com/traefik/yaegi/interp/program.go:59 +0xb8
github.com/traefik/yaegi/interp.(*Interpreter).eval(0xc0000ed440, {0xc0002a0b40?, 0x98?}, {0x7ffe60aa69d7?, 0xc0002a0a00?}, 0x98?)
        github.com/traefik/yaegi/interp/interp.go:612 +0x28
github.com/traefik/yaegi/interp.(*Interpreter).EvalPath(0xc0000ed440, {0x7ffe60aa69d7, 0x1d})
        github.com/traefik/yaegi/interp/interp.go:514 +0xab
main.runFile(0x7ffe60aa69d7?, {0x7ffe60aa69d7, 0x1d}, 0x0)
        github.com/traefik/yaegi/cmd/yaegi/run.go:153 +0xee
main.run({0xc000036050?, 0x1, 0x1})
        github.com/traefik/yaegi/cmd/yaegi/run.go:116 +0xbec
main.main()
        github.com/traefik/yaegi/cmd/yaegi/yaegi.go:144 +0x2cb

Yaegi Version

v0.14.2

Additional Notes

This issue is related to #1419.