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

The C++26 standard draft is finalized, introducing four major features: compile-time reflection enabling zero-overhead metaprogramming and code generation; memory safety improvements (bounds checking, elimination of undefined behavior for uninitialized variables) that work by recompiling existing code without rewrites — already fixing 1,000+ bugs at Google and reducing segfaults by 30%; contracts with preconditions, postconditions, and a native assertion mechanism replacing the C assert macro; and std::execution, a unified framework for structured concurrency and parallelism using schedulers, senders, and receivers that integrates with C++20 coroutines. GCC and Clang have already implemented most features.