clang-tidy release notes: Split and order changes by type

Improvements to clang-query

---------------------------

- ...

The improvements are...

Improvements to clang-rename

----------------------------

- New :doc:`android-cloexec-pipe2

  <clang-tidy/checks/android-cloexec-pipe2>` check.

  This checks ensures that ``pipe2()`` is called with the O_CLOEXEC flag.

- New :doc:`bugprone-unhandled-self-assignment

  <clang-tidy/checks/bugprone-unhandled-self-assignment>` check.

  Finds user-defined copy assignment operators which do not protect the code

  against self-assignment either by checking self-assignment explicitly or

  using the copy-and-swap or the copy-and-move method.

  This checks ensures that ``pipe2()`` is called with the ``O_CLOEXEC`` flag.

- New :doc:`bugprone-branch-clone

  <clang-tidy/checks/bugprone-branch-clone>` check.

  Checks if any calls to POSIX functions (except ``posix_openpt``) expect negative

  return values.

- New :doc:`bugprone-unhandled-self-assignment

  <clang-tidy/checks/bugprone-unhandled-self-assignment>` check.

  Finds user-defined copy assignment operators which do not protect the code

  against self-assignment either by checking self-assignment explicitly or

  using the copy-and-swap or the copy-and-move method.

- New :doc:`fuchsia-default-arguments-calls

  <clang-tidy/checks/fuchsia-default-arguments-calls>` check.

  This was previously done by `fuchsia-default-arguments check`, which has been

  removed.

- New :doc:`fuchsia-default-arguments-calls

  <clang-tidy/checks/fuchsia-default-arguments-calls>` check.

- New :doc:`fuchsia-default-arguments-declarations

  <clang-tidy/checks/fuchsia-default-arguments-declarations>` check.

  Warns if a function or method is declared with default parameters.

  This was previously done by `fuchsia-default-arguments check` check, which has

  been removed.

- New :doc:`google-objc-avoid-nsobject-new

  <clang-tidy/checks/google-objc-avoid-nsobject-new>` check.

  Checks for calls to ``+new`` or overrides of it, which are prohibited by the

  Google Objective-C style guide.

- New :doc:`google-readability-avoid-underscore-in-googletest-name

  <clang-tidy/checks/google-readability-avoid-underscore-in-googletest-name>`

  check.

  Checks whether there are underscores in googletest test and test case names in

  test macros, which is prohibited by the Googletest FAQ.

- New :doc:`google-objc-avoid-nsobject-new

  <clang-tidy/checks/google-objc-avoid-nsobject-new>` check.

- New :doc:`llvm-prefer-isa-or-dyn-cast-in-conditionals

  <clang-tidy/checks/llvm-prefer-isa-or-dyn-cast-in-conditionals>` check.

  Checks for calls to ``+new`` or overrides of it, which are prohibited by the

  Google Objective-C style guide.

  Looks at conditionals and finds and replaces cases of ``cast<>``,

  which will assert rather than return a null pointer, and

  ``dyn_cast<>`` where the return value is not captured. Additionally,

  finds and replaces cases that match the pattern ``var &&

  isa<X>(var)``, where ``var`` is evaluated twice.

- New :doc:`modernize-use-trailing-return-type

  <clang-tidy/checks/modernize-use-trailing-return-type>` check.

  Rewrites function signatures to use a trailing return type.

- New :doc:`objc-super-self <clang-tidy/checks/objc-super-self>` check.

  subclasses of ``NSObject`` and recommends calling a superclass initializer

  instead.

- New :doc:`openmp-exception-escape

  <clang-tidy/checks/openmp-exception-escape>` check.

  Analyzes OpenMP Structured Blocks and checks that no exception escapes

  out of the Structured Block it was thrown in.

- New :doc:`openmp-use-default-none

  <clang-tidy/checks/openmp-use-default-none>` check.

  Finds OpenMP directives that are allowed to contain a ``default`` clause,

  but either don't specify it or the clause is specified but with the kind

  other than ``none``, and suggests to use the ``default(none)`` clause.

- New :doc:`readability-convert-member-functions-to-static

  <clang-tidy/checks/readability-convert-member-functions-to-static>` check.

  Finds non-static member functions that can be made ``static``.

- New alias :doc:`cert-oop54-cpp

  <clang-tidy/checks/cert-oop54-cpp>` to

  :doc:`bugprone-unhandled-self-assignment

  which greatly reduces warnings related to loops which are unlikely to

  cause an actual functional bug.

- The ‘fuchsia-default-arguments’ check has been removed.

- Added `UseAssignment` option to :doc:`cppcoreguidelines-pro-type-member-init

  <clang-tidy/checks/cppcoreguidelines-pro-type-member-init>`

  If set to true, the check will provide fix-its with literal initializers

  (``int i = 0;``) instead of curly braces (``int i{};``).

- The `fuchsia-default-arguments` check has been removed.

  Warnings of function or method calls and declarations with default arguments

  were moved to :doc:`fuchsia-default-arguments-calls

  <clang-tidy/checks/fuchsia-default-arguments-calls>` and

  :doc:`fuchsia-default-arguments-calls

  <clang-tidy/checks/fuchsia-default-arguments-calls>` checks respectively.

  :doc:`fuchsia-default-arguments-declarations

  <clang-tidy/checks/fuchsia-default-arguments-declarations>` checks

  respectively.

- The :doc:`google-runtime-int <clang-tidy/checks/google-runtime-int>`

  check has been disabled in Objective-C++.

- The `Acronyms` and `IncludeDefaultAcronyms` options for the

  :doc:`objc-property-declaration <clang-tidy/checks/objc-property-declaration>`

  check have been removed.

- The :doc:`modernize-use-override

  <clang-tidy/checks/modernize-use-override>` now supports `OverrideSpelling`

  and `FinalSpelling` options.

- New :doc:`llvm-prefer-isa-or-dyn-cast-in-conditionals

  <clang-tidy/checks/llvm-prefer-isa-or-dyn-cast-in-conditionals>` check.

  Looks at conditionals and finds and replaces cases of ``cast<>``,

  which will assert rather than return a null pointer, and

  ``dyn_cast<>`` where the return value is not captured. Additionally,

  finds and replaces cases that match the pattern ``var &&

  isa<X>(var)``, where ``var`` is evaluated twice.

- New :doc:`modernize-use-trailing-return-type

  <clang-tidy/checks/modernize-use-trailing-return-type>` check.

  Rewrites function signatures to use a trailing return type.

- The :doc:`misc-throw-by-value-catch-by-reference

  <clang-tidy/checks/misc-throw-by-value-catch-by-reference>` now supports

  `WarnOnLargeObject` and `MaxSize` options to warn on any large trivial

  object caught by value.

- Added `UseAssignment` option to :doc:`cppcoreguidelines-pro-type-member-init

  <clang-tidy/checks/cppcoreguidelines-pro-type-member-init>`

  If set to true, the check will provide fix-its with literal initializers

  (``int i = 0;``) instead of curly braces (``int i{};``).

- New :doc:`readability-convert-member-functions-to-static

  <clang-tidy/checks/readability-convert-member-functions-to-static>` check.

  Finds non-static member functions that can be made ``static``.

- The `Acronyms` and `IncludeDefaultAcronyms` options for the

  :doc:`objc-property-declaration <clang-tidy/checks/objc-property-declaration>`

  check have been removed.

Improvements to include-fixer

-----------------------------

- New :doc:`openmp-exception-escape

  <clang-tidy/checks/openmp-exception-escape>` check.

  Analyzes OpenMP Structured Blocks and checks that no exception escapes

  out of the Structured Block it was thrown in.

- New :doc:`openmp-use-default-none

  <clang-tidy/checks/openmp-use-default-none>` check.

  Finds OpenMP directives that are allowed to contain a ``default`` clause,

  but either don't specify it or the clause is specified but with the kind

  other than ``none``, and suggests to use the ``default(none)`` clause.

The improvements are...

Improvements to clang-include-fixer

-----------------------------------