calling a method in an embedded interface field

[mvertes]

The following program sample.go triggers an unexpected result

package main

type I1 interface {
    I2
    Wrap() *S3
}

type I2 interface {
    F()
}

type S2 struct {
    I2
}

func newS2(i2 I2) I1 {
    return &S2{i2}
}

type S3 struct {
    base *S2
}

func (s *S2) Wrap() *S3 {
    i2 := s
    return &S3{i2}
}

type T struct {
    name string
}

func (t *T) F() { println("in F", t.name) }

func main() {
    t := &T{"test"}
    s2 := newS2(t)
    s3 := s2.Wrap()
    s3.base.F()
}

Expected result

$ go run ./sample.go
in F test

Got

$ yaegi ./sample.go
./sample.go:36:8: panic
run: reflect: call of reflect.Value.Call on ptr Value
goroutine 1 [running]:
runtime/debug.Stack()
	runtime/debug/stack.go:24 +0x64
github.com/traefik/yaegi/interp.(*Interpreter).Execute.func1()
	github.com/traefik/yaegi/interp/program.go:146 +0x74
panic({0x1014c15c0, 0x140001a5230})
	runtime/panic.go:884 +0x204
github.com/traefik/yaegi/interp.runCfg.func1()
	github.com/traefik/yaegi/interp/run.go:205 +0x11c
panic({0x1014c15c0, 0x140001a5230})
	runtime/panic.go:884 +0x204
reflect.flag.mustBe(...)
	reflect/value.go:221
reflect.Value.Call({0x101582aa0?, 0x140001b5aa0?, 0x140004578a8?}, {0x101acdb30?, 0x14000457858?, 0x100aa9dc8?})
	reflect/value.go:366 +0xf0
github.com/traefik/yaegi/interp.callBin.func2({0x101582aa0?, 0x140001b5aa0?, 0x140004578c8?}, {0x101acdb30?, 0x10150e5a0?, 0x140001b5aa0?})
	github.com/traefik/yaegi/interp/run.go:1506 +0x28
github.com/traefik/yaegi/interp.callBin.func11(0x140001e09a0)
	github.com/traefik/yaegi/interp/run.go:1683 +0x13c
github.com/traefik/yaegi/interp.runCfg(0x1400044db80, 0x140001e09a0, 0x0?, 0x0?)
	github.com/traefik/yaegi/interp/run.go:213 +0x21c
github.com/traefik/yaegi/interp.(*Interpreter).run(0x14000201680, 0x1400044cf00, 0x140001e0790?)
	github.com/traefik/yaegi/interp/run.go:119 +0x3a8
github.com/traefik/yaegi/interp.(*Interpreter).Execute(0x14000201680, 0x14000460a20)
	github.com/traefik/yaegi/interp/program.go:172 +0x1cc
github.com/traefik/yaegi/interp.(*Interpreter).eval(0x14000201680, {0x14000440340?, 0x183?}, {0x16f41b648?, 0x14000440000?}, 0x83?)
	github.com/traefik/yaegi/interp/interp.go:564 +0x64
github.com/traefik/yaegi/interp.(*Interpreter).EvalPath(0x14000201680, {0x16f41b648, 0x1e})
	github.com/traefik/yaegi/interp/interp.go:513 +0xa4
main.runFile(0x16f41b648?, {0x16f41b648, 0x1e}, 0x0)
	github.com/traefik/yaegi/cmd/yaegi/run.go:153 +0xe8
main.run({0x140001b4010?, 0x1, 0x1})
	github.com/traefik/yaegi/cmd/yaegi/run.go:116 +0xb2c
main.main()
	github.com/traefik/yaegi/cmd/yaegi/yaegi.go:144 +0x300

Yaegi Version

v0.15.0

Additional Notes

This issue is related to #1172