[llvm-bugs] [Bug 134975] clangd won't clean old pch files

[LLVM Bugs via llvm-bugs]

Issue	134975
Summary	clangd won't clean old pch files
Labels	new issue
Assignees
Reporter	Abbyyan

    With clangd config `--pch-storage=disk`, the pch files will store under the dir which is specified by `"TMPDIR", "TMP", "TEMP", "TEMPDIR"` as described by [issue 255](https://github.com/clangd/clangd/issues/255). But a few months after modified `TEMPDIR`, I found the data disk is filled with pch files. Pch files 5 mouths ago has not been cleaned up yet, which occupying 300G of disk. Learned from [issue 1957](https://github.com/clangd/clangd/issues/1957), I want to know if there any progress in cleaning up pch files please.  Thanks a lot.
ps, `--pch-storage=memory` is not set because sometimes memory will explode even with `-j=4`.
![Image](https://github.com/user-attachments/assets/7fd3cba5-80c3-4a40-9f5b-d041ad76bf8e)

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