# ReSharper C++ 2026.3: Class Layout, Format String Analysis, And More

Source: [The JetBrains Blog](https://blog.jetbrains.com/rscpp/2026/11/10/resharper-cpp-2026-3-class-layout-format-string-analysis-and-more/) · 2026-11-10 · Tools & Launches
Page: https://themorning.dev/story/resharper-c-2026-3-class-layout-format-string-analysis-and-more-e0df0d9a795fe4f4
Kind: release · Impact: low

## In brief

- JetBrains released ReSharper C++ 2026.3 with a new Class Layout tool window that visualizes the memory layout of classes and helps spot wasted space.
- The release extends format string analysis to cover std::format, std::print, and the {fmt} library.
- ReSharper 2026.3 adds Claude Agent and Codex as agent options in the Visual Studio tool window alongside Junie, and supports .NET 11 and C# 15.

## Why it matters

C++ developers using ReSharper C++ get a tool to find wasted space in class layouts and more format string checks for std::format, std::print and {fmt}. Visual Studio users of ReSharper get additional agent choices.

## Versions

- ReSharper C++ 2026.3
- ReSharper 2026.3
- ReSharper 2026.2
- .NET 11
- C# 15

## Timeline

- 2026-11-10: ReSharper C++ 2026.3 and ReSharper 2026.3 announced on the JetBrains Blog

## Coverage

- [ReSharper 2026.3: Claude Agent and Codex in Visual Studio, .NET 11 and C# 15 Support, and More](https://blog.jetbrains.com/dotnet/2026/11/10/resharper-2026-3-release/) — The JetBrains Blog, 2026-11-10
- [ReSharper C++ 2026.3: Class Layout, Format String Analysis, And More](https://blog.jetbrains.com/rscpp/2026/11/10/resharper-cpp-2026-3-class-layout-format-string-analysis-and-more/) — The JetBrains Blog, 2026-11-10

Tags: c++, resharper, jetbrains, static-analysis, visual-studio, dotnet

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Brief generated by AI (claude-haiku-5-5) from the reporting listed under Coverage. Headlines belong to their publishers. The Morning Dev – https://themorning.dev