.. If you want to modify sections/contents permanently, you should modify both ReleaseNotes.rst and ReleaseNotesTemplate.txt. ==================================================== Extra Clang Tools |release| |ReleaseNotesTitle| ==================================================== .. contents:: :local: :depth: 3 Written by the `LLVM Team `_ .. only:: PreRelease .. warning:: These are in-progress notes for the upcoming Extra Clang Tools |version| 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 |release|. 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 |release|? ========================================== 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 ^^^^^^^^^^^^ - New ``Override pure virtual methods`` code action. When invoked on a class definition, this action automatically generates C++ ``override`` declarations for all pure virtual methods inherited from its base classes that have not yet been implemented. The generated method stubs prompts the user for the actual implementation. The overrides are intelligently grouped under their original access specifiers (e.g., ``public``, ``protected``), creating new access specifier blocks if necessary. Signature help ^^^^^^^^^^^^^^ Cross-references ^^^^^^^^^^^^^^^^ Objective-C ^^^^^^^^^^^ Miscellaneous ^^^^^^^^^^^^^ Improvements to clang-doc ------------------------- Improvements to clang-query --------------------------- - Matcher queries interpreted by clang-query are now support trailing comma (,) in matcher arguments. Note that C++ still doesn't allow this in function arguments. So when porting a query to C++, remove all instances of trailing comma (otherwise C++ compiler will just complain about "expected expression"). Improvements to clang-tidy -------------------------- - :program:`clang-tidy` no longer attemps to analyze code from system headers by default, greatly improving performance. This behavior is disabled if the `SystemHeaders` option is enabled. - The :program:`run-clang-tidy.py` and :program:`clang-tidy-diff.py` scripts now run checks in parallel by default using all available hardware threads. Both scripts display the number of threads being used in their output. - Improved :program:`run-clang-tidy.py` by adding a new option `enable-check-profile` to enable per-check timing profiles and print a report based on all analyzed files. - Improved documentation of the `-line-filter` command-line flag of :program:`clang-tidy` and :program:`run-clang-tidy.py`. - Improved :program:`clang-tidy` option `-quiet` by suppressing diagnostic count messages. New checks ^^^^^^^^^^ - New :doc:`bugprone-invalid-enum-default-initialization ` check. Detects default initialization (to 0) of variables with ``enum`` type where the enum has no enumerator with value of 0. - New :doc:`llvm-mlir-op-builder ` check. Checks for uses of MLIR's old/to be deprecated ``OpBuilder::create`` form and suggests using ``T::create`` instead. - New :doc:`misc-override-with-different-visibility ` check. Finds virtual function overrides with different visibility than the function in the base class. New check aliases ^^^^^^^^^^^^^^^^^ Changes in existing checks ^^^^^^^^^^^^^^^^^^^^^^^^^^ - Improved :doc:`bugprone-infinite-loop ` check by adding detection for variables introduced by structured bindings. - Improved :doc:`bugprone-narrowing-conversions ` check by fixing false positive from analysis of a conditional expression in C. - Improved :doc:`bugprone-reserved-identifier ` check by ignoring declarations in system headers. - Improved :doc:`bugprone-signed-char-misuse ` check by fixing false positives on C23 enums with the fixed underlying type of signed char. - Improved :doc:`bugprone-tagged-union-member-count ` by fixing a false positive when enums or unions from system header files or the ``std`` namespace are treated as the tag or the data part of a user-defined tagged union respectively. - Improved :doc:`bugprone-unhandled-self-assignment ` check by adding an additional matcher that generalizes the copy-and-swap idiom pattern detection. - Improved :doc:`cppcoreguidelines-prefer-member-initializer ` check to avoid false positives on inherited members in class templates. - Improved :doc:`misc-header-include-cycle ` check performance. - Improved :doc:`modernize-use-designated-initializers ` check to suggest using designated initializers for aliased aggregate types. - Improved :doc:`modernize-use-std-format ` check to correctly match when the format string is converted to a different type by an implicit constructor call. - Improved :doc:`modernize-use-std-print ` check to correctly match when the format string is converted to a different type by an implicit constructor call. - Improved :doc:`performance-unnecessary-copy-initialization ` by printing the type of the diagnosed variable. - Improved :doc:`performance-unnecessary-value-param ` by printing the type of the diagnosed variable. - Improved :doc:`portability-template-virtual-member-function ` check to avoid false positives on pure virtual member functions. - Improved :doc:`readability-container-size-empty ` check by correctly generating fix-it hints when size method is called from implicit ``this``. - Improved :doc:`readability-identifier-naming ` check by ignoring declarations in system headers. The documentation is also improved to differentiate the general options from the specific ones. - Improved :doc:`readability-qualified-auto ` check by adding the option `IgnoreAliasing`, that allows not looking at underlying types of type aliases. 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 -------------------------------