"Failed to parse payload: recursive reference of cells" on "cell.FromBOC" call

[worker-droid]

Hello. I get error Failed to parse payload: recursive reference of cells when deserializing stateinit from mytonwallet (ton connect).
Error occurs on the call cell.FromBOC.
I believe this is a bug, because I was able to successfully parse this stateinit using tongo library as shown in the example.

Tonutils version: v1.8.9

Example:

package main

import (
  "encoding/base64"
  "fmt"
  "log"

  "github.com/tonkeeper/tongo/tonconnect"
  "github.com/xssnick/tonutils-go/tvm/cell"
)

func main() {
  // address
  // UQBe7yULTjbWZszDK2d8LOePumy9ZtGzwQgrXXfqjR1yM2fy

  // stateInit from mytonwallet
  stateInit := "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"

  _, err := tonconnect.ParseStateInit(stateInit)
  if err != nil {
    log.Fatal(err) 
  }
    // ok
  fmt.Println("parsed 1")

  stateInitBytes, err := base64.StdEncoding.DecodeString(stateInit)
  if err != nil {
    log.Fatal(err)
  }

  _, err = cell.FromBOC(stateInitBytes)
  if err != nil {
    log.Fatal(err) // failed to parse payload: recursive reference of cells
  }
  fmt.Println("parsed 2")

}

[xssnick]

Hi, this is corrupted BoC with recursive reference (reference to itself and infinity depth), it must not work, so it is probably a bug in tongo.

For example this is TON Node output of trying to deserealize this boc:
Unexpected Status [Error : 0 : invalid bag-of-cells failed to deserialize cell #20 [Error : 0 : bag-of-cells error: reference #1 of cell #20 is to cell #20 with smaller index]]

[worker-droid]

Hm, yes, it seems so.

Corrupted BoC comes from ton-core ts library

const contract = WalletContractV4.create({ workchain: 0, publicKey: Buffer.from('MUP3GpbKCQu64L4PIU0QprZxmSUygHcaYKuo2tZYA1c=', 'base64') });

let init = beginCell()
  .storeWritable(storeStateInit(contract!.init))
  .endCell();

let s = init
  .toBoc({ idx: true, crc32: true })
  .toString('base64')
  
console.log(s)

If idx: true is set to idx: false everything works fine.

Thank you, closing issue.