immutable-to-mutable.rs

// Old code
#[derive(Accounts)]
pub struct PrintAccounts<'info> {
    foo_account: Account<'info, FooAccount>,
    bar_account: Account<'info, BarAccount>,
}

// New code
#[derive(Accounts)]
pub struct PrintAccounts<'info> {
    foo_account: Account<'info, FooAccount>,
    #[account(mut)]
    bar_account: Account<'info, BarAccount>,
}

// Error
// backwards-compat-examples
// AnchorError: AnchorError caused by account: bar_account. Error Code: ConstraintMut. Error Number: 2000. Error Message: A mut constraint was violated.
//     at Function.parse (/Users/mlim/Documents/software/crypto/solana/formfn/backwards-compat-examples/node_modules/@project-serum/anchor/src/error.ts:167:14)
//     at translateError (/Users/mlim/Documents/software/crypto/solana/formfn/backwards-compat-examples/node_modules/@project-serum/anchor/src/error.ts:276:35)
//     at MethodsBuilder.rpc [as _rpcFn] (/Users/mlim/Documents/software/crypto/solana/formfn/backwards-compat-examples/node_modules/@project-serum/anchor/src/program/namespace/rpc.ts:35:29)
//     at ssTicksAprocendRejections (node:internal/process/task_queues:96:5) {
//   errorLogs: [
//     'Program log: AnchorError caused by account: bar_account. Error Code: ConstraintMut. Error Number: 2000. Error Message: A mut constraint was violated.'
//   ],
//   logs: [
//     'Program Fg6PaFpoGXkYsidMpWTK6W2BeZ7FEfcYkg476zPFsLnS invoke [1]',
//     'Program log: Instruction: PrintAccounts',
//     'Program log: AnchorError caused by account: bar_account. Error Code: ConstraintMut. Error Number: 2000. Error Message: A mut constraint was violated.',
//     'Program Fg6PaFpoGXkYsidMpWTK6W2BeZ7FEfcYkg476zPFsLnS consumed 4074 of 200000 compute units',
//     'Program Fg6PaFpoGXkYsidMpWTK6W2BeZ7FEfcYkg476zPFsLnS failed: custom program error: 0x7d0'
//   ],
//   error: {
//     errorCode: { code: 'ConstraintMut', number: 2000 },
//     errorMessage: 'A mut constraint was violated',
//     comparedValues: undefined,
//     origin: 'bar_account'
//   },
//   _programErrorStack: ProgramErrorStack { stack: [ [PublicKey] ] }
// }