Niko Matsakis e7d704dd8b convert DatabaseSlot to unsafe trait ... The unsafe impl now asserts that the `DatabaseSlot` implementor type is indeed `Send+Sync` if `DB::DatabaseData` is `Send+Sync`. Since our query keys/values are a part of database-data, this means that `Slot` must be `Send+Sync` if the key/value are `Send+Sync`. We test this with a function that will cause compliation to fail if we accidentally introduce an `Rc<T>` etc.		2019-07-02 06:49:24 -04:00
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salsa-macros	convert DatabaseSlot to unsafe trait	2019-07-02 06:49:24 -04:00