---
title: "Uninitialized Variable"
description: "Warns when values are used before having been initialized."
---

Warns when values are used before having been initialized.

Activate with `--uninit`.

Supported languages:
- C/C++/ObjC: Yes
- Java: No



## List of Issue Types

The following issue types are reported by this checker:
- [UNINITIALIZED_VALUE](/docs/all-issue-types#uninitialized_value)