C++26: Reflection, Memory Safety, Contracts, and a New Async Model

https://www.infoq.com/news/2026/04/cpp-26-reflection-safety-async/

Article

  • C++26 finalizes static reflection, allowing code to inspect and generate types at compile time.
  • New memory safety profiles add opt-in guards without requiring a full language rewrite.
  • Contracts (preconditions/postconditions) land after years of standardization debate.
  • A new async execution model (std::execution) replaces ad-hoc async patterns.

Discussion

  • Commenters note memory safety requires metaprogramming guards — not automatic, opt-in only.
  • Clarification: class(metaclass) syntax shown in some proposals targets C++29, not C++26.
  • Discussion is brief; limited comments beyond clarifying scope of individual features.

Discuss on HN


Type Link
Added Apr 20, 2026
Modified Apr 20, 2026