Extra Clang Tools 13.0.0 (In-Progress) Release Notes

Written by the LLVM Team


These are in-progress notes for the upcoming Extra Clang Tools 13 release. Release notes for previous releases can be found on the Download Page.


This document contains the release notes for the Extra Clang Tools, part of the Clang release 13.0.0. Here we describe the status of the Extra Clang Tools in some detail, including major improvements from the previous release and new feature work. All LLVM releases may be downloaded from the LLVM releases web site.

For more information about Clang or LLVM, including information about the latest release, please see the Clang Web Site or the LLVM Web Site.

Note that if you are reading this file from a Git checkout or the main Clang web page, this document applies to the next release, not the current one. To see the release notes for a specific release, please see the releases page.

What’s New in Extra Clang Tools 13.0.0?

Some of the major new features and improvements to Extra Clang Tools are listed here. Generic improvements to Extra Clang Tools as a whole or to its underlying infrastructure are described first, followed by tool-specific sections.

Improvements to clangd

The improvements are…

Improvements to clang-doc

The improvements are…

Improvements to clang-query

The improvements are…

Improvements to clang-rename

The improvements are…

Improvements to clang-tidy

  • The run-clang-tidy.py helper script is now installed in bin/ as run-clang-tidy. It was previously installed in share/clang/.
  • Added command line option –fix-notes to apply fixes found in notes attached to warnings. These are typically cases where we are less confident the fix will have the desired effect.
  • libToolingCore and Clang-Tidy was refactored and now checks can produce highlights (^~~~~ under fragments of the source code) in diagnostics. Existing and new checks in the future can be expected to start implementing this functionality. This change only affects the visual rendering of diagnostics, and does not alter the behavior of generated fixes.

New checks

Changes in existing checks

  • Improved bugprone-signal-handler check.

    Added an option to choose the set of allowed functions.

  • Improved readability-uniqueptr-delete-release check.

    Added an option to choose whether to refactor by calling the reset member function or assignment to nullptr. Added support for pointers to std::unique_ptr.

Removed checks

  • The readability-deleted-default check has been removed.

    The clang warning Wdefaulted-function-deleted will diagnose the same issues and is enabled by default.

Improvements to include-fixer

The improvements are…

Improvements to clang-include-fixer

The improvements are…

Improvements to modularize

The improvements are…

Improvements to pp-trace

The improvements are…