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C++26 is introducing standardized library hardening to catch common undefined behavior (like out-of-bounds access) at runtime, based on Google's production experience showing a mere 0.30% performance overhead and a 30% reduction in segmentation faults.
The article benchmarks the compile-time cost of C++26 reflection for enum-to-string conversion against C++17 libraries and X-macro preprocessor techniques using GCC 16.