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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - clangd can exhaust all disk space in /tmp by writing preamble-*.pch files"
href="https://bugs.llvm.org/show_bug.cgi?id=52489">52489</a>
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<th>Summary</th>
<td>clangd can exhaust all disk space in /tmp by writing preamble-*.pch files
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<th>Product</th>
<td>clang-tools-extra
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>clangd
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>ehsan.akhgari@gmail.com
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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<p>
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<pre>I use the `clangd` extension in Visual Studio for a very large C++ project
based on the Chromium code base.
I've noticed that `clangd` leaves behind preamble PCH files inside /tmp so
frequently that I run out of disk space once every couple of weeks, with /tmp
using 116GB, 130GB, etc worth in these files.
I noticed that others have experienced this issue too (e.g.
<a href="https://youtrack.jetbrains.com/issue/CPP-19402">https://youtrack.jetbrains.com/issue/CPP-19402</a>) and some people recommend
passing -pch-storage=memory to clangd. However I have 16GB of RAM on this
server and I am unsure whether doing this is a good idea for a project of this
size.
Could clangd be modified to manage these files better and prevent the out of
disk space scenario?</pre>
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