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tarpl: fix formatting typos in lists #27436

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8 changes: 4 additions & 4 deletions src/doc/tarpl/send-and-sync.md
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Expand Up @@ -5,8 +5,8 @@ multiply alias a location in memory while mutating it. Unless these types use
synchronization to manage this access, they are absolutely not thread safe. Rust
captures this with through the `Send` and `Sync` traits.

* A type is Send if it is safe to send it to another thread. A type is Sync if
* it is safe to share between threads (`&T` is Send).
* A type is Send if it is safe to send it to another thread.
* A type is Sync if it is safe to share between threads (`&T` is Send).

Send and Sync are *very* fundamental to Rust's concurrency story. As such, a
substantial amount of special tooling exists to make them work right. First and
Expand All @@ -26,8 +26,8 @@ ever interact with are Send and Sync.
Major exceptions include:

* raw pointers are neither Send nor Sync (because they have no safety guards)
* `UnsafeCell` isn't Sync (and therefore `Cell` and `RefCell` aren't) `Rc` isn't
* Send or Sync (because the refcount is shared and unsynchronized)
* `UnsafeCell` isn't Sync (and therefore `Cell` and `RefCell` aren't)
* `Rc` isn't Send or Sync (because the refcount is shared and unsynchronized)

`Rc` and `UnsafeCell` are very fundamentally not thread-safe: they enable
unsynchronized shared mutable state. However raw pointers are, strictly
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