An example of experimental:views at doc does not compile

[olliNiinivaara]

Documentation page of experimental features has an example with views at Path expressions chapter: https://nim-lang.org/docs/manual_experimental.html#view-types-path-expressions

However, it does not compile (even with the one dangerous line commented out):

Example

{.experimental: "views".}

type
  Obj = object
    field: string

proc dangerous(s: var seq[Obj]) =
  let v: lent Obj = s[0] # seal 's'
  # commented out!! s.setLen 0  # prevented at compile-time because 's' is sealed.
  echo v.field

var s = @[Obj(field: "fff")]
dangerous(s)

Current Output

nim c viewsfail.nim
Hint: used config file '/home/olli/.choosenim/toolchains/nim-1.4.2/config/nim.cfg' [Conf]
Hint: used config file '/home/olli/.choosenim/toolchains/nim-1.4.2/config/config.nims' [Conf]
....CC: stdlib_system.nim
CC: viewsfail.nim
/home/olli/.cache/nim/viewsfail_d/@mviewsfail.nim.c: In function ‘dangerous__jX7jyjvbdJfl3bjgqB5bmQ’:
/home/olli/.cache/nim/viewsfail_d/@mviewsfail.nim.c:398:6: error: incompatible types when assigning to type ‘tyObject_Obj__QFqSOLZkhelY8XYnDrOOog *’ {aka ‘struct tyObject_Obj__QFqSOLZkhelY8XYnDrOOog *’} from type ‘tyObject_Obj__QFqSOLZkhelY8XYnDrOOog’ {aka ‘struct tyObject_Obj__QFqSOLZkhelY8XYnDrOOog’}
  398 |  v = (*s)->data[((NI) 0)];

Additional information

Nim Compiler Version 1.4.2 [Linux: amd64]
Operating System: Ubuntu 20.04.1 LTS
Kernel: Linux 5.4.0-54-generic

[Araq]

This works in Nim devel.