What's New in CLion

CLion 2021.1 is enhancing the code analysis experience by upgrading Data Flow Analysis to global mode, expanding MISRA support, and integrating with Clazy for Qt projects. In the debugger, GDB and LLDB have reached feature parity for Core Dump debugging. And finally, remote mode has a wider range of abilities and works consistently across several project models.

Data Flow Analysis

Data flow analysis (DFA) tracks the flow of data in your code and detects potential issues based on that analysis. In addition to the local DFA (which works within a single function), CLion 2021.1 includes global DFA (which takes a whole translation unit of a program as a single unit for analysis). Global DFA not only enriches the already existing checks but also adds several new unique inspections.

Enhancing local checks with global DFA

The list of current DFA-based inspections that benefit from global DFA includes:

  • Dangling pointers – detects pointers that may point to already deleted memory.
  • Null dereference – detects dereferencing pointers that may contain nullptr.
  • Endless loops and Infinite recursion.
  • Constant conditions – detects possible conditions that are always true or false.
  • Unreachable code and Unused values.
  • Escape analysis – detects variables containing references to local variables that escape their scope.

New global DFA checks

A few new inspections have been added that only make sense when analyzing globally – running DFA on a whole translation unit of a program:

  • Constant function result – reports functions whose return value appears to always be the same constant.
  • Constant parameter – reports functions where a parameter appears to always be the same constant.
  • Unreachable function calls – detects functions whose call sites are never executed.

Performance improvements

CLion 2021.1 also optimizes many steps in DFA. The performance measurements on Postgres, Eigen, and Clangd projects, among others, show that the overall performance is good and that some characteristics have improved (such as the number of files where DFA execution was terminated by CLion because of a timeout).

Learn more

Dynamic analysis

Branch coverage

Branch coverage

In addition to line coverage, CLion 2021.1 can now also calculate Branch Coverage. This method takes into account all the branches of each control structure. Run your CMake application or tests with coverage and check out the new column that’s been added to the Coverage tool window.

Branch coverage is enabled by default and can be adjusted in Settings | Build, Execution, Deployment | Coverage, but it only works with GCC/gcov or version 12.0.0 and higher of LLVM/llvm-cov.

Dynamic analysis in Remote mode

Dynamic analysis in Remote mode

In order to reach feature consistency across all toolchains, project models, and configurations, CLion 2021.1 makes it possible for Google Sanitizers, Valgrind Memcheck, and Code Coverage to work with remote toolchains.

MISRA C and C++ checks

CLion 2021.1 adds more checks from MISRA C 2012 and MISRA C++ 2008. The full list is maintained on our confluence page and allows you to easily track the progress.

Postfix completion for C and C++

Postfix code completion for C and C++ lets you add code around an expression you’ve just typed. It can wrap an expression with a frequently used language construct, or pass the expression as the first argument of a free function.

Postfix template

Wrap the expression with language construct

Postfix templates can help you with common language constructs. Type an expression then a dot, and then add the postfix template abbreviation and press the expansion key, or select the required template from the completion list that appears. The expanded template will wrap the given expression. Find the full list of templates in Settings | Editor | General | Postfix Completion.

Postfix function parameter

Pass the expression to a free function

Use postfix code completion to pass the expression you’ve just typed to a free function as the first argument. Type an expression, then a dot, and select a free function from the completion list that appears.

Enhancements for Makefile projects

Initial support for Remote Makefile projects

Initial support for Remote Makefile projects

CLion 2021.1 allows you to work with Makefile projects on a remote machine. Change the toolchain in the Makefile settings to a remote one, then reload the project and it will synchronize with the remote machine. Compile, run, and debug your application remotely from your locally running CLion.

Check out known issues and limitations.

Makefile Language plugin

Makefile Language plugin

The Makefile Language plugin (previously 3rd-party) is now maintained by the CLion team and comes bundled in CLion. The plugin provides make syntax highlighting, quick documentation, Find Usages for targets, and a variety of navigation and code completion actions for Makefile.

Enhancements for CMake projects

Share CMake Profiles in VCS

Share CMake Profiles in VCS

CMake Profile settings in CLion are now stored in a cmake.xml file in the .idea directory and can be shared in the VCS along with the project. Simply select the Share option in Settings | Build, Execution, Deployment | CMake.

CLion 2021.1 bundles CMake 3.19. In addition to the other changes it introduces, this is the first CMake version to support Apple Silicon (M1 chip).

CMake 3.19 features for CUDA are now supported in CLion, which includes autocompletion for a few new CMake variables.

Enhancements for Qt projects

Clazy integration

Clazy integration

Clazy, a Qt-oriented static code analyzer, is now integrated into CLion’s Clangd-based engine. CLion currently uses version 1.8. Checks are displayed in the editor and quick-fixes are also available.

Users can configure CLion’s severity level and the level of the Clazy checks in Settings | Editor | Inspections | C/C++ | General | Clazy.

QtCreator keymap

QtCreator keymap

For those used to the key bindings in QtCreator, CLion now bundles the QtCreator keymap. You can switch to it in Settings or via a Quick Switch Scheme action (Ctrl+`).

Debugger

Set Execution Point in disassembly

Set Execution Point in disassembly

The Set Execution Point action lets you jump to an arbitrary line of code in the editor during a debug session and set the execution point there, skipping all the other commands in between. It now works in the disassembly view, so you can move the execution point while stepping through the assembly code.

Core dumps debugging

Core dumps debugging

When debugging core dumps in CLion 2021.1, users can now set sysroot in the corresponding run configuration. This will help localize library symbols when debugging core dumps from binaries built on other systems.

Explicitly setting symbol files when debugging a core dump for non-symbolized binary with LLDB now also provides necessary information about the symbols to CLion. With this fix, GDB and LLDB have reached feature parity for core dump debugging in CLion!

Remote terminal

Remote terminal

A new Tools | Open Remote Host Terminal action opens the project directory on the remote host if it exists. The remote host corresponds to the remote profile that is currently selected, or if a local one is selected, the first remote profile found in the project.

Project view

External Sources

Source files located outside of the project root are now grouped under the External Sources node in the Project tree. This helps prevent the top-level crowding of these files.

VCS

Profile for pre-commit inspections

Profile for pre-commit inspections

CLion can inspect your code before you commit it to help you make sure there are no bugs. Choose a code inspection profile before committing changes to VCS – click the gear icon to display the commit options, select the Analyze code checkbox, click Choose profile, and select the desired profile.

Git commit templates

You can create a custom commit message template in Git and CLion will display this text as an initial commit message.

Save to Shelf

A new Save to Shelf action allows you to copy your changes to the Shelf while keeping them in the local changes. You can access this action by pressing Ctrl+Shift+A and typing ‘Save to Shelf’.

Learn more about other VCS improvements across all IntelliJ-based products.

Rust plugin update

Rust plugin update

IntelliJ Rust now provides a structured view for the compiler’s build output. The tab opens automatically in the Build tool window when you call a Cargo command that includes a build step. This new feature works with Cargo versions 1.48.0 or later.

Another significant update is the new Change Signature refactoring. It helps you modify a function/method signature, affecting all references. You can quickly change a function’s name or return type, reorder or add/remove parameters, and add an async or unsafe prefix.

The Rename refactoring now gives renaming suggestions for elements like structs, functions, and local variables when you change a name in the editor.

Conditional compilation support has been improved. Find Usages is now available for Cargo features, and completion works for the feature argument in the cfg and cfg_attr attributes. Also, if there are nested attributes inside cfg_attr, the plugin takes that into account during name resolution and code analysis.

Code With Me

Code With Me

Code With Me, a new JetBrains service for collaborative development and pair programming, is now bundled with CLion.

Set the required level of access to your project and share the link with your guests. Your peers do not even need to have an IDE of their own installed to collaborate with you. Embedded audio and video calls, along with chat messaging, will help teams discuss the code, share their knowledge, and cooperate more efficiently.

To learn more about the availability of Code With Me with your current JetBrains license, check out the pricing page.

Space integration

The Space plugin is now available for CLion. You can connect to your organization in JetBrains Space via Get from VCS, located right on the welcome screen. Once logged in, you can view and clone project repositories, review your teammates’ code, and write Space Automation scripts.

Other enhancements

  • CLion will now automatically apply the high-contrast theme when you launch the IDE for the first time if you are using the high-contrast mode on Windows.
  • With the new typography settings, fine-tune the weight of your main and bold font styles in Settings | Editor | Fonts.
  • Whenever several tabs that split the editor vertically are open, you can double-click any of them to maximize the editor window for that specific tab. To bring the window back to its original size, simply double-click it again.

What's New in CLion 2020.3

CLion 2020.3 brings significant, eagerly anticipated improvements to key parts of the development process – code analysis, running and debugging applications, and unit testing. For embedded projects, CLion now comes with initial MISRA C and C++ support. And Qt users can benefit from IDE features tuned specifically for working with Qt code.

Debugger

Debug as Root

CLion 2020.3 can run and debug your application with root privileges – you just need to select this option in the corresponding Run/Debug configuration. This works for CMake, Makefile, Gradle Native, Custom Build, and CTest applications.

Debugging with Core Dumps

Debugging with Core Dumps

A new Run | Open Core Dump… action available for Linux and macOS allows you to open an existing core dump of a crashed process in CLion and debug it there. Users can inspect the frames and variables view, check the memory and disassembly view, evaluate expressions, and run debugger commands from the debugger console. Read more about this feature’s configuration process and known limitations.

Set Execution Point

Set Execution Point

With a new Set Execution Point to Cursor action, you can move back and forth though your program’s execution while debugging, break loops or restart them, select another branch in an if-else clause or switch-case statement, and even skip loops completely. It is as simple as dragging-and-dropping an arrow in the gutter to the line you are interested in.

Learn more

Interactive hints and Inline watches

Interactive hints and Inline watches

Now when the application is running in debug mode, the editor displays clickable inline hints that you can expand to see all the fields belonging to a given variable. Moreover, you can change the variable values inside the drop-down list or add an arbitrary expression as an Inline Watch to this place in the code.

Run Settings

Configure environment with a script

Configure environment with a script

In CLion, you can now use a script to specify the environment in which a Run/Debug configuration will be launched. You'll find the new setting for this in all Application and Unit Testing configurations.

Edit configurations while indexing

Edit configurations while indexing

No more waiting! Run/Debug configurations can be edited while the project is being indexed.

Unit testing

CTest support

CTest support

CTest, a CMake-specific test runner, is now supported in CLion. This means the list of tests that are run with CTest is detected, and the IDE automatically creates run/debug configurations for them. When tests are launched, the results are presented in the built-in test runner, from which you can debug tests, rerun only failed tests, and much more.

Learn more

Test runner for Google Test

Test runner for Google Test

Version 2020.3 enhances CLion’s support for Google Test, the most popular C++ unit testing framework in the world (Developer Ecosystem Research in 2020 shows that 31% of C++ developers use Google Test).


    Updates include:
  • The full test tree is displayed immediately in the built-in test runner, and then the tests are executed.
  • For parameterized tests, CLion now displays test parameters right in the test tree.
  • Disabled tests (those with the DISABLED prefix in their names) are now also shown in the test tree with the corresponding icon.

Code analysis and refactoring

MISRA

MISRA C and C++

CLion 2020.3 brings partial support for MISRA C 2012 and MISRA C++ 2008, guidelines used widely in embedded development and especially in the automotive industry. This support speeds up the development of such projects by revealing incompatibilities earlier in the development cycle. The list of currently supported checks is available on CLion’s Confluence page.

Unused value

Unused value

CLion 2020.3 improves the Unused Value inspection, which catches situations where a variable value is never used after it has been assigned. It can now also be tuned to follow the style that recommends using default variable initializers. A new option to turn the inspection off in such cases has been added to the settings.

Extract Lambda Parameter

Extract Lambda Parameter

A new Extract Lambda Parameter refactoring has been added to CLion. It extracts an expression or statement into a new parameter with a lambda expression passed as a corresponding argument. The statement could, for example, be a comparator passed to a sorting function.

Watch Extract Refactorings in Action

Code completion

Clang completion snippets

Clang completion snippets

Clang completion snippets help you insert common constructs when C++ keywords are typed. In some cases, when completing a typedef keyword, for example, code completion can suggest not only the keyword itself but also stubs for the type and the new name.

Completion for templates

Completion for templates

CLion 2020.3 improves code completion, as it now works much more accurately with template types. For example, completion options are displayed for container elements and iterators in the function template.

Qt projects

Create a new Qt project

Create a new Qt project

The New Project dialog suggests the Qt Console Executable and Qt Widgets Executable project types. You can also select the Qt CMake prefix path, the C++ language standard to be used in the project, and the Qt version. The new project is generated using the corresponding templates.

Create a new Qt UI Class

Create a new Qt UI Class

A new QT UI Class item in the New menu (Alt+Insert) helps you simultaneously create a Qt class along with a .ui file. Fill in the class name and select the parent class (QWidget, QMainWindow, or QDialog). .h/.cpp/.ui files will be generated using the Filename base as their file names. The generated files follow the templates listed in Settings/Preferences | Editor | File and Code TemplatesQt Class, Qt Class Header, and Qt Designer Form.

Complete signals and slots

Complete signals and slots

Signals and slots are central features of Qt, as they are the entities used for communication between objects. CLion now understands when signals or slots have to be completed, and it filters only the corresponding members in the completion dropdown.

Auto-import in Qt style

Auto-import in Qt style

Auto-import suggestions in Qt projects in CLion 2020.3 are tuned to follow the most commonly used style for Qt.

Makefile projects

Support for projects using libtool, dolt, and ccache

Support for projects using libtool, dolt, and ccache

Makefile projects using various wrappers like ccache, libtool, dolt, slibtool, and jlibtool can now be successfully loaded in CLion. Read more about some of the limitations that remain.

Run/Debug configurations

Run/Debug configurations

Setting up a Makefile project in CLion is now even easier – the Run/Debug configurations are created automatically for the targets in the top-level Makefile when loading the project. Now to run and debug, you just need to point the configuration to the built executable.

Learn more

Recompile single file

Recompile single file

The Recompile action (Ctrl+Shift+F9) helps speed up the development process by compiling a single file without building the whole project. It now works for Makefile projects, too!

CMake

Enable/Disable CMake Profiles

Enable/Disable CMake Profiles

With CLion 2020.3, it’s now possible to keep several CMake profiles configured in CLion while disabling the ones that are not currently in use. This improves the project loading times and saves from the redundant failures from temporarily unavailable profiles (like for the remote configurations which are currently shut down). The option is available from the CMake tool window and the CMake Profiles settings dialog.

Learn more

VCS

Git tab in Search Everywhere

Git tab in Search Everywhere

The Search Everywhere dialog now includes a Git tab. It helps with finding commit hashes and messages, tags, and branches. You can also perform simple mathematical calculations in the search field.

UI updates

The VCS menu is now named according to the version control system in use. We’ve made the menu more concise, removing all but the most useful actions for versioning your project.

Additionally, now the two most popular buttons – Commit and Commit and Push… – are explicitly shown on the Commit screen.

Git staging support

You can now stage changes directly from CLion. To enable this feature, go to Preferences/Settings | Version Control | Git and tick the Enable staging area checkbox. Click the + icon to add your files to the new Staged node in the Commit view. You can also stage changes right from the gutter or in the Diff view. To learn more, read our blog post.

Remote development

Automatic update of Exclude paths

Automatic update of Exclude paths

Directories marked as Excluded locally are now automatically marked as Excluded paths for remote toolchains when they are initially being configured. And when changes are made to an already synchronized project, CLion shows an update notification and suggests updating the list of Excluded paths.

Learn the details

Code With Me

Code With Me

CLion 2020.3 supports Code With Me (EAP), a new service from JetBrains for collaborative development and pair programming. Code With Me enables you to share the project you currently have open in your IDE with others, and work on it together in real time. You can download it today from the plugin marketplace (Preferences / Settings | Plugins | Marketplace). Check out these posts to learn more about Code With Me.

UI update

Updates to Welcome screen

Updates to Welcome screen

CLion 2020.3 gets a revamped Welcome screen. The new layout puts the most common operations at your fingertips and gives you immediate access to recent projects, customization options, and plugin settings.

Drag and drop for tabs

Splitting an editor

It’s now possible to split an editor by dragging and dropping a tab to the side of the main editor window. The Open in Right Split action splits the editor vertically upon opening a file.

You can invoke the action from the Project view or from other navigation popups, such as Recent Files and Search Everywhere (Shift+Enter).

IDE theme synced with OS settings

IDE theme synced with OS settings

CLion can now synchronize with your OS theme. To enable this feature, go to Settings / Preferences | Appearance & Behavior | Appearance and tick the Sync with OS checkbox. Click the gear icon next to Sync with OS to select your preferred theme.

Rust plugin update

Rust plugin update

IntelliJ Rust now fully supports Cargo features and allows you to configure them with a smart new UI. Features of a workspace can be toggled on and off with a single click, and the plugin’s code assistance will take these settings into account. Check out the details in this blog post.

Also, the plugin now allows using Rustfmt as the default code formatter. Just set the corresponding checkbox in Settings / Preferences | Languages & Frameworks | Rust | Rustfmt, and the whole file reformatting will employ Rustfmt. For now, if you call Reformat Code on a selection, the IDE’s formatter will be used instead.

The plugin’s project wizard has been enhanced with more templates and the option to use custom cargo-generate templates.

Other updates include the introduction of WebAssembly project support and a new experimental engine for name resolution.

What's New in CLion 2020.2

CLion 2020.2 ensures that a variety of C++ projects are covered by adding Makefile projects and polishing CMake support. It provides better C++20 standard compliance. Code analysis is now more accurate and catches more critical errors, like dangling pointers. Unit testing, code coverage, embedded development, and other areas were also significantly enhanced.

Project models

Makefile project support

Developing a Makefile-based project? Benefit from CLion’s smart features – CLion now comes with Makefile project support out of the box. Open a folder with a top-level Makefile as a project, or directly point CLion to a Makefile in the Open dialog. The IDE will run make (with the --just-print option to avoid running an actual build), parse the output of the make command, and load the project. Check out the details, known limitations, and a long list of projects we’ve tested our approach with in this blog post.

Take a short tour

Enhanced CMake UX

Enhanced CMake UX

The CMake Profile settings under Build, Execution, Deployment | CMake have a newly polished UI, with a few useful tips added for the settings there. In addition, several actions for CMake projects are now available in Find Action, and you can assign a shortcut to any or all of them if you use them regularly:

  • CMake Settings
  • Stop CMake project reload
  • Open CMakeCache file

CMake upgrade

CLion now bundles CMake 3.17 and adds initial support for two of its most recent features:

  1. Ninja Multi-Config: you can now pass the -G "Ninja Multi-Config" generator option to get CLion build files generated for every configuration (note that, temporarily, CLion will still use only one selected configuration for the CMake profile).
  2. CMake precompiled headers: use the target_precompile_headers command to add header files to the PRECOMPILE_HEADERS and/or INTERFACE_PRECOMPILE_HEADERS properties of a target. CLion will treat such precompiled headers correctly.

Take a short tour

Building projects

Recompile single file

The Recompile single file action helps speed up the development process by quickly checking local changes, and it is now available for Ninja and other generators used in CMake and supported in CLion.

Thanks to an important bug fix, CLion can now build multiple independent projects in parallel, without them blocking each other from starting.

Code analysis

Code analysis in CLion 2020.2 got a massive update, increasing the accuracy of many checks and covering more cases. This version also continues the work of polishing the Data Flow Analysis, reimplemented previously on top of the Clangd-based engine.

Dangling pointer

Dangling pointer

Pointers that point to invalid data lead to run-time issues. Typical cases are double-free and use-after-free combinations. CLion now catches such dangling pointers if they appear in the local scope, no pointer arithmetic is involved, and macros are not preventing CLion from performing the analysis.

Simplify

Simplify

The Simplify code inspection is now more accurate and covers more cases. It works for the following types of statements:

  • condition == true.
  • condition1? true : condition2.
  • if(condition1) return true; return condition2;
  • Statements for identical branches.

The cases can be configured separately in Settings | Editor | Inspections | C/C++ | General | Simplifiable statement .

Loop condition is never updated

Loop condition is never updated

This CLion inspection detects situations where a loop condition is not updated inside the loop. It’s similar to Clang-Tidy’s clang-tidy:bugprone-infinite-loop but works for loops with exit points and can handle cases with lambdas or references.

Unused code

Unused code

The Unused code inspection has been massively overhauled. Among other changes, it now works for type aliases, for both globally and locally defined using constructs.

Inspection Widget and Problems View

Inspection Widget and Problems View

Last but not least, we’ve introduced a new Inspection Widget. It displays the number of warnings and errors in the current file and lets you navigate between them with ease. You can also configure the highlighting level (just like you could previously with the so-called Hector icon).

If you click on the Inspection Widget, the Problems View tool window will open (View | Tool Window | Problems). It shows the list of warnings and errors in the current file, helps you navigate to the place in your code where the problem was encountered, and allows you to fix the issues by invoking the Alt+Enter shortcut right from the tool window.

C++20

This year officially brings a new language standard to C++ developers, and CLion already comes with support for many of its features. The language engine in CLion 2020.2 is also generally more stable on C++20 code.

C++20 keywords

C++20 keywords

Newly added keywords are supported by CLion 2020.2 in code highlighting and completion:

  • char8_t
  • consteval and constinit
  • co_await, co_return, and co_yield
Designated initializers

Designated initializers

Code completion in designated initializers now works for fields from a base class.

explicit(bool)

explicit(bool)

The C++20 explicit(bool) construct is now highlighted correctly. It’s also equipped with name hints for condition arguments and is supported in navigation and refactoring.

Range-based for with initializer

Range-based for with initializer

Range-based for loops with the init statement are now supported. This includes refactorings like Rename for variables in the loop.

Constrain a function's result

Constrain a function's result

A new inspection for code that uses Concepts has been added. It suggests constraining local variables declared as auto if the result of a constrained function call is assigned to them.

Unit testing

Doctest support

Doctest support

CLion 2020.2 adds support for yet another single-header framework for C++ – Doctest. Doctest has gained popularity in the community and is now supported by CLion, with automatic test detection, Run/Debug configuration creation, and a handy built-in test runner to display test results. Learn how to configure a set of tests for launch in this dedicated blog post.
Catch2 template tests

Catch2 template tests

These types of tests in Catch2 are now recognized and handled just like the other test types.

Skipping tests in Google Test

Skipping tests in Google Test

The GTEST_SKIP() macro in Google Test provides the ability to skip tests at runtime. This is now supported by CLion.

Code coverage

Code coverage

CLion 2020.2 improves the user experience by adding coverage flags automatically when you click the Run with Coverage button. Now, if your currently selected CMake profile doesn’t include compiler options for coverage, CLion will search for a CMake profile (and create one if not found) with the coverage flags passed via CMAKE_CXX_FLAGS and CMAKE_C_FLAGS.

Embedded development: PlatformIO plugin

For embedded development, we’ve updated a plugin for PlatformIO, bringing significant improvements:

Highlighting in platformio.ini files

Highlighting in platformio.ini files

PlatformIO project configuration files are now highlighted properly, so you can read and update them more easily.

New Run/Debug configurations

New Run/Debug configurations

When a new project is created from the New Project Wizard in CLion, many useful Run/Debug configurations are added automatically. For example, _PROGRAM, _MONITOR, _CLEAN, _TEST, and many others.

CMake Profiles for PlatformIO configurations

CMake Profiles for PlatformIO configurations

CLion now automatically creates CMake Profiles for the CMAKE_CONFIGURATION_TYPES entries in the PlatformIO CMake project.

VCS

Git installed in WSL2

Git installed in WSL2

If you develop with the WSL2 toolchains and use Git on WSL2, you will now benefit from CLion switching between Git executables depending on the project location. It will auto-detect the Git executable from WSL2 for projects opened from there (via \\wsl$ path) and switch all Git-related features to work with it.

GitHub Pull Requests

GitHub Pull Requests

CLion 2020.2 introduces a new and more spacious view for GitHub Pull Requests. It shows all the details of a particular pull request (like messages, branch names, author, assignee, changed files, commits, and timeline) and displays the results of the pre-commit checks. It also helps with many actions like start a review, request reviews, attach comments, or merge pull requests from within the IDE.

Learn more

Go to Declaration or Usages

Go to Declaration or Usages

The Go to Declaration or Usages action (Ctrl+Click / Ctrl+B) behaves differently depending on the case and the IDE settings:

  • When invoked on a symbol usage, it navigates to that usage’s declaration.
  • When invoked on a declaration, it shows the list of that declaration’s usages.
  • When invoked on a definition, it shows the associated declaration or usages. This depends on the settings in Settings | Editor | General | Go to Declaration or Usages.

Performance improvements

A few UI freezes and slowdowns have been fixed. To avoid editor performance degradation, CLion now inserts a backslash on pressing Enter inside the macro definition. The macro definition will quite likely be continued on a new line, so this saves the IDE from redundantly reparsing activity.

Rust plugin update

Rust plugin update

In version 0.3 of the plugin, the new engine for macro expansion, which until now had been experimental, is enabled by default. This engine handles macro-generated impl blocks and module declarations, providing code insight for the entirety of your code, including crates like tokio and async-std. Learn more in this blog post.

Another major update is the introduction of initial debugger support for Rust’s MSVC toolchain. Now you can use the LLDB-based debugger bundled in CLion for the Visual Studio toolchain to debug Rust code built on Windows using Rust’s MSVC.

Other enhancements include new refactorings (Move for files and top-level items and Introduce Constant), initial support for or_patterns, error highlighting in format literals inside macros like println!, rendering for documentation in the editor, inlay hints for chain method calls, and improvements to the debugger workflow in IntelliJ IDEA.

Learn more

Other improvements

  1. The LLDB-based debugger for the Microsoft Visual Studio C++ toolchain maintained by JetBrains has been given a significant number of improvements. The most notable are: debug sessions no longer freeze on stop, threads are now named automatically based on their entry-point function, the debugger gained significant performance improvements, and many freezes and crashes were fixed.
  2. Updated GDB STL pretty-printers are bundled into CLion 2020.2.
  3. From now on, the Clangd-based engine is the default language engine in CLion and the option to turn it off has been removed. Settings | Languages & Frameworks | C/C++ | Clangd now includes information on the LLVM Clang revision used, so you will know what to expect in terms of C++ support and built-in Clang-Tidy checks.