Modern C++ Support in CLion: What’s New | The CLion Blog

Modern C++ features such as compile-time computation and template code are increasingly accessible, but their productivity hinges on effective tooling, which the CLion language engine aims to provide. Recent updates in CLion, particularly in version 2026.1 and beyond, enhance support for C++26 features, excluding reflection, and offer innovative improvements like the #embed preprocessor directive and pack indexing. The newly introduced Constexpr Debugger enables developers to step through compile-time evaluations, simplifying the debugging of constexpr and consteval code. Additional updates include support for GCC and Clang extensions, improved code assistance, and refactoring features, such as automatic import for C++20 modules and inspections that detect common coding mistakes. These enhancements, powered by the CLion Nova engine, aim to streamline the development process by reducing manual tasks and improving code clarity, making it easier for developers to leverage modern C++ capabilities efficiently.