Module migration 

Layout migration helpers.

Structs

MigrationEdge

One step in a layout’s migration chain.

Traits

LayoutMigration

Layouts opt into in-place migration by providing a MIGRATIONS constant. The default (empty slice) means “no migrations declared” and any mismatch between header and AccountLayout::SCHEMA_EPOCH is a hard failure.

Functions

apply_pending_migrations

Apply all pending migrations needed to bring the account at current_epoch up to AccountLayout::SCHEMA_EPOCH.