Extra Clang Tools 11.0.0 (In-Progress) Release Notes¶
- Introduction
- What’s New in Extra Clang Tools 11.0.0?
- Major New Features
- Improvements to clangd
- Improvements to clang-doc
- Improvements to clang-query
- Improvements to clang-rename
- Improvements to clang-tidy
- Improvements to include-fixer
- Improvements to clang-include-fixer
- Improvements to modularize
- Improvements to pp-trace
- Clang-tidy visual studio plugin
Written by the LLVM Team
Warning
These are in-progress notes for the upcoming Extra Clang Tools 11 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 11.0.0. 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 11.0.0?¶
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¶
New module¶
New module llvmlibc.
This module contains checks related to the LLVM-libc coding standards.
New checks¶
New abseil-string-find-str-contains check.
Finds
s.find(...) == string::npos
comparisons (for various string-like types) and suggests replacing withabsl::StrContains()
.New bugprone-misplaced-pointer-arithmetic-in-alloc check.
Finds cases where an integer expression is added to or subtracted from the result of a memory allocation function (
malloc()
,calloc()
,realloc()
,alloca()
) instead of its argument.New bugprone-no-escape check.
Finds pointers with the
noescape
attribute that are captured by an asynchronously-executed block.New bugprone-reserved-identifier check.
Checks for usages of identifiers reserved for use by the implementation.
New bugprone-spuriously-wake-up-functions check.
Finds
cnd_wait
,cnd_timedwait
,wait
,wait_for
, orwait_until
function calls when the function is not invoked from a loop that checks whether a condition predicate holds or the function has a condition parameter.New bugprone-suspicious-include check.
Finds cases where an include refers to what appears to be an implementation file, which often leads to hard-to-track-down ODR violations, and diagnoses them.
New cert-oop57-cpp check.
Flags use of the C standard library functions
memset
,memcpy
andmemcmp
and similar derivatives on non-trivial types.New cppcoreguidelines-avoid-non-const-global-variables check.
Finds non-const global variables as described in check I.2 of C++ Core Guidelines.
New llvmlibc-callee-namespace check.
Checks all calls resolve to functions within
__llvm_libc
namespace.New llvmlibc-implementation-in-namespace check.
Checks all llvm-libc implementation is within the correct namespace.
New llvmlibc-restrict-system-libc-headers check.
Finds includes of system libc headers not provided by the compiler within llvm-libc implementations.
New misc-no-recursion check.
Finds recursive functions and diagnoses them.
New modernize-replace-disallow-copy-and-assign-macro check.
Finds macro expansions of
DISALLOW_COPY_AND_ASSIGN
and replaces them with a deleted copy constructor and a deleted assignment operator.New objc-dealloc-in-category check.
Finds implementations of -dealloc in Objective-C categories.
New objc-nsinvocation-argument-lifetime check.
Finds calls to
NSInvocation
methods under ARC that don’t have proper argument object lifetimes.New readability-use-anyofallof check.
Finds range-based for loops that can be replaced by a call to
std::any_of
orstd::all_of
.
New check aliases¶
- New alias cert-con36-c to bugprone-spuriously-wake-up-functions was added.
- New alias cert-con54-cpp to bugprone-spuriously-wake-up-functions was added.
- New alias cert-dcl37-c to bugprone-reserved-identifier was added.
- New alias cert-dcl51-cpp to bugprone-reserved-identifier was added.
- New alias cert-str34-c to bugprone-signed-char-misuse was added.
- New alias llvm-else-after-return to readability-else-after-return was added.
Changes in existing checks¶
Improved performance-faster-string-find check.
Now checks
std::basic_string_view
by default.Improved readability-else-after-return check now supports a WarnOnConditionVariables option to control whether to refactor condition variables where possible.
Improved readability-identifier-naming check.
Now able to rename member references in class template definitions with explicit access.
Improved readability-redundant-string-init check now supports a StringNames option enabling its application to custom string classes. The check now detects in class initializers and constructor initializers which are deemed to be redundant.
Checks supporting the
HeaderFileExtensions
flag now support;
as a delimiter in addition to,
, with the latter being deprecated as of this release. This simplifies how one specifies the options on the command line:--config="{CheckOptions: [{ key: HeaderFileExtensions, value: h;;hpp;hxx }]}"
Improved readability-qualified-auto check now supports a AddConstToQualified to enable adding
const
qualifiers to variables typed withauto *
andauto &
.
Renamed checks¶
- The ‘fuchsia-restrict-system-headers’ check was renamed to portability-restrict-system-includes
Other improvements¶
- For run-clang-tidy.py add option to use alpha checkers from clang-analyzer.
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…