Extra Clang Tools 21.0.0git (In-Progress) Release Notes

Written by the LLVM Team

Warning

These are in-progress notes for the upcoming Extra Clang Tools 21 release. Release notes for previous releases can be found on the Download Page.

Introduction

This document contains the release notes for the Extra Clang Tools, part of the Clang release 21.0.0git. 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 21.0.0git?

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.

Major New Features

Improvements to clangd

Inlay hints

Diagnostics

Semantic Highlighting

Compile flags

Hover

Code completion

Code actions

Signature help

Cross-references

Objective-C

Miscellaneous

Improvements to clang-doc

Improvements to clang-query

Improvements to clang-tidy

New checks

New check aliases

Changes in existing checks

  • Improved bugprone-string-constructor check to find suspicious calls of std::string constructor with char pointer, start position and length parameters.

  • Improved bugprone-unsafe-functions check to allow specifying additional C++ member functions to match.

  • Improved misc-const-correctness check by adding the option AllowedTypes, that excludes specified types from const-correctness checking.

  • Improved misc-redundant-expression check by providing additional examples and fixing some macro related false positives.

Removed checks

Miscellaneous

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

Clang-tidy Visual Studio plugin