---
title: "withLockUnchecked(_:)"
framework: os
role: symbol
role_heading: Instance Method
path: "os/osallocatedunfairlock/withlockunchecked(_:)-9v03m"
---

# withLockUnchecked(_:)

## Declaration

```swift
func withLockUnchecked<R>(_ body: () throws -> R) rethrows -> R
```