---
title: "withLockUnchecked(flags:_:)"
framework: os
role: symbol
role_heading: Instance Method
path: "os/osallocatedunfairlock/withlockunchecked(flags:_:)-8cv64"
---

# withLockUnchecked(flags:_:)

## Declaration

```swift
func withLockUnchecked<R>(flags: OSAllocatedUnfairLockFlags, _ body: (inout State) throws -> R) rethrows -> R
```