C++26 introduces standardized library hardening to convert undefined behavior into detectable runtime contract violations, addressing common programming errors like out-of-bounds access. The feature builds on existing vendor implementations and is supported by Google's production data showing it caught over 1,000 bugs with minimal performance impact (0.30% overhead). This represents a significant step forward for C++ safety and reliability.
Background
Undefined behavior in C++ is a major source of bugs and security vulnerabilities, often arising from common mistakes in standard library usage. Major C++ implementations already include various hardening mechanisms, but they lack standardization and portability.
- Source
- Lobsters
- Published
- May 13, 2026 at 10:15 PM
- Score
- 8.0 / 10