realm-kotlin

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It is quite easy to try to update frozen objects in a write block by:

val realm = Realm.open(...)
realm.write {
    val obj = realm.query<Obj>(...).find().first()
    obj.id = "newid"
}

The above will yield something like

[RLM_ERR_WRONG_TRANSACTION_STATE]: Must be in a write transaction

because the obj is obtained from the global realm instance and not the MutableRealm receiver of the write-block, like:

val realm = Realm.open(...)
realm.write { // this: MutableRealm
    val obj = query<Obj>(...).find().first() // implicit this
    obj.id = "newid"
}

It should be possible to catch this core-error and give a more precise error message hinting that user is updating a frozen object and maybe direct them towards using the mutable realm.