Redeclaration scope issue

[cclerget]

The following program sample.go triggers an unexpected result

package main

import (
	"fmt"
	"time"
)

func main() {
	t, err := time.Parse(time.RFC3339, "2006-01-02T15:04:05Z")
	if err != nil {
		panic(err)
	}
	fn := func() error {
		_, err := t.GobEncode()
		return err
	}
	fmt.Println(fn())
}

Expected result

$ go run ./sample.go
<nil>

Got

$ yaegi ./sample.go
run: reflect: call of reflect.Value.Set on zero Value
goroutine 1 [running]:
runtime/debug.Stack()
	/usr/lib/go-1.17/src/runtime/debug/stack.go:24 +0x65
github.com/traefik/yaegi/interp.(*Interpreter).Execute.func1()
	/home/xxx/git/yaegi/interp/program.go:131 +0x94
panic({0xd18ee0, 0xc00000e7c8})
	/usr/lib/go-1.17/src/runtime/panic.go:1038 +0x215
github.com/traefik/yaegi/interp.runCfg.func1()
	/home/xxx/git/yaegi/interp/run.go:193 +0x145
panic({0xd18ee0, 0xc00000e7c8})
	/usr/lib/go-1.17/src/runtime/panic.go:1038 +0x215
github.com/traefik/yaegi/interp.runCfg.func1()
	/home/xxx/git/yaegi/interp/run.go:193 +0x145
panic({0xd18ee0, 0xc00000e7c8})
	/usr/lib/go-1.17/src/runtime/panic.go:1038 +0x215
reflect.flag.mustBeAssignableSlow(0xc0004af6c8)
	/usr/lib/go-1.17/src/reflect/value.go:255 +0x116
reflect.flag.mustBeAssignable(...)
	/usr/lib/go-1.17/src/reflect/value.go:249
reflect.Value.Set({0x0, 0x0, 0xc0004af6c8}, {0xd39d80, 0xc0000a3050, 0x416334})
	/usr/lib/go-1.17/src/reflect/value.go:1899 +0x6a
github.com/traefik/yaegi/interp.callBin.func8(0x10)
	/home/xxx/git/yaegi/interp/run.go:1628 +0x1cb
github.com/traefik/yaegi/interp.runCfg(0xc0004b4d80, 0xc0003b02c0, 0x464fe5, 0x4cf1de)
	/home/xxx/git/yaegi/interp/run.go:201 +0x2ac
github.com/traefik/yaegi/interp.call.func9(0xc0003b0160)
	/home/xxx/git/yaegi/interp/run.go:1434 +0x94e
github.com/traefik/yaegi/interp.runCfg(0xc0003bbd40, 0xc0003b0160, 0xc0003bb320, 0xc0004afa80)
	/home/xxx/git/yaegi/interp/run.go:201 +0x2ac
github.com/traefik/yaegi/interp.(*Interpreter).run(0xc0003ae000, 0xc0003bb320, 0xc0003b0000)
	/home/xxx/git/yaegi/interp/run.go:120 +0x385
github.com/traefik/yaegi/interp.(*Interpreter).Execute(0xc0003ae000, 0xc0004b9050)
	/home/xxx/git/yaegi/interp/program.go:157 +0x24b
github.com/traefik/yaegi/interp.(*Interpreter).eval(0xc0003ae000, {0xc000300480, 0x10d}, {0x7ffe5613f076, 0xc000300240}, 0xd)
	/home/xxx/git/yaegi/interp/interp.go:615 +0x5c
github.com/traefik/yaegi/interp.(*Interpreter).EvalPath(0xc0003ae000, {0x7ffe5613f076, 0xb})
	/home/xxx/git/yaegi/interp/interp.go:508 +0xab
main.runFile(0x7ffe5613f076, {0x7ffe5613f076, 0xb}, 0x0)
	/home/xxx/git/yaegi/cmd/yaegi/run.go:153 +0x8f
main.run({0xc000130010, 0x8001, 0xc00008e6b8})
	/home/xxx/git/yaegi/cmd/yaegi/run.go:116 +0xbec
main.main()
	/home/xxx/git/yaegi/cmd/yaegi/yaegi.go:144 +0x2dd

Yaegi Version

v0.11.3

Additional Notes

Tracked to #1367