clang Var Folders Cache
This folder stores temporary clang compiler data in macOS /private/var/folders, where builds and developer tools keep short-lived working files.
What is clang Var Folders Cache?
`/private/var/folders/jb/4mnygrgj01bdk1z6p5jgsl480000gn/C/clang` is a macOS temporary working folder used by clang, the C, C++, Objective-C, and Objective-C++ compiler from the LLVM project. On Macs, items under `/private/var/folders` are created for per-user cache and temporary storage, and developer tools may use them while compiling code, indexing projects, or running build tasks. You may encounter this folder when checking disk usage, cleaning developer data, or troubleshooting build artifacts that consume space. Its contents are not user documents and are generally recreated automatically when clang or a related build tool needs them again. This kind of folder is most relevant to developers using Xcode, command line tools, Homebrew toolchains, or other software that invokes clang during builds.
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Safety overview
Status: Mostly safe
This is temporary compiler data, not personal content. Removing it can interrupt an active build or force development tools to regenerate cached compiler files the next time they run. Because the folder sits inside `/private/var/folders`, it is best handled only when clang, Xcode, Terminal build jobs, and related IDEs are closed.
Recommendation: If you need to reclaim space and you are not compiling code right now, you can remove this folder and let macOS or your developer tools recreate it later. Keep it if you actively use Xcode, command line build tools, or other development workflows and want to avoid temporary rebuild time.
File path
/private/var/folders/jb/4mnygrgj01bdk1z6p5jgsl480000gn/C/clang
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