pei := types.NewPtr(ei)         // *interface{}
	fldt := mkFuncType(types.FakeRecvType(), []*types.Type{},
		[]*types.Type{types.Types[types.TSTRING]})
	field := types.NewField(src.NoXPos, typecheck.Lookup("F"), fldt)
	nei := types.NewInterface([]*types.Field{field})
	i16 := types.Types[types.TINT16]
	tb := types.Types[types.TBOOL]
	s1 := mkstruct(i16, i16, tb)
	ft := mkFuncType(nil, []*types.Type{s1, ei, ei, nei, pei, nei, i16},