C++26 introduces a 'hardened implementation' mode for the standard library that converts undefined behavior into well-defined contract violations. For example, std::vector::operator[] would trigger a contract violation instead of UB when accessed out of bounds, offering an alternative to exception-throwing methods like .at().
Background
C++ has long been criticized for undefined behavior risks in its standard library, particularly unchecked container access. C++20 introduced contracts as an experimental feature, and C++26 appears to be building on that foundation.
- Source
- Lobsters
- Published
- Sep 1, 2026 at 01:52 AM
- Score
- 7.0 / 10