Realm v5.4.0 Release Notes

Release Date: 2020-09-09 // about 2 years ago
  • This version bumps the Realm file format version. This means that older
    🔖 versions of Realm will be unable to open Realm files written by this version,
    and a new version of Realm Studio will be required. There are no actual format
    🔄 changes and the version bump is just to force a re-migration of incorrectly
    ⬆️ upgraded Realms.

    🛠 Fixed

    • ⬆️ Upgrading pre-5.x files with string primary keys would result in a file where
      realm.object(ofType:forPrimaryKey:) would fail to find the object.
      (#6716, since 5.2.0)
    • A write transaction which modifies an object with more than 16 managed
      properties and causes the Realm file to grow larger than 2 GB could cause an
      assertion failure mentioning "m_has_refs". (JS #3194, since 5.0.0).
    • Objects with more than 32 properties could corrupt the Realm file and result
      in a variety of crashes. (Java #7057, since 5.0.0).


    • ⬆️ File format: Generates Realms with format v11 (Reads and upgrades all previous formats)
    • Realm Object Server: 3.21.0 or later.
    • Realm Studio: 3.12 or later.
    • 🚀 APIs are backwards compatible with all previous releases in the 5.x.y series.
    • 🚀 Carthage release for Swift is built with Xcode 11.6.


    • ⬆️ Upgraded realm-core from v6.0.23 to v6.0.25
    • ⬆️ Upgraded realm-sync from v5.0.20 to v5.0.22