Compiler Error: Unable to Resolve Variable 'res' When Trying to Insert Owners

Sway
4

Hi there!
I’ve tried to replicate using the following code and toolchain

contract;

use std::{
    storage::storage_map::StorageMap,
    constants::ZERO_B256,
    hash::Hash
};


storage {
    owners: StorageMap<Identity, ()> = StorageMap {}
}

abi MyContract {
    #[storage(read, write)]
    fn my_fn();
}

impl MyContract for Contract {
    #[storage(read, write)]
    fn my_fn() {
        let owner = Identity::Address(Address::from(ZERO_B256));
        let res = storage.owners.try_insert(owner , ());
        require(res.is_ok(), "DuplicatedOwner");
    }
}

///
latest-x86_64-unknown-linux-gnu (default)
  forc : 0.49.3
    - forc-client
      - forc-deploy : 0.49.3
      - forc-run : 0.49.3
    - forc-crypto : 0.49.3
    - forc-doc : 0.49.3
    - forc-explore : 0.28.1
    - forc-fmt : 0.49.3
    - forc-lsp : 0.49.3
    - forc-tx : 0.49.3
    - forc-wallet : 0.4.3
  fuel-core : 0.22.4
  fuel-core-keygen : 0.22.4

fuels versions
--------------
forc : 0.54.0
forc-wallet : 0.54.0

And I’m having the same error

 match val {
    |               ^^^ Internal compiler error: Failed to get variant type from enum in `unsigned downcast`.
Please file an issue on the repository and include the code that triggered this error.
189 |             Option::Some(v) => {
190 |                 Result::Err(StorageMapError::OccupiedError(v))
    |
____

error: Internal compiler error: Unable to resolve variable 'res'.
Please file an issue on the repository and include the code that triggered this error.
____

  Aborting due to 2 errors.
Error: Failed to compile contract

Please note that if you comment out the require function, the Unable to resolve variable ‘res’ dissapears.

        // require(res.is_ok(), "DuplicatedOwner");

It seems like this is a compiler bug.

1 Like