Undefined Behavior in C/C++: A Tightrope Walk Between Efficiency and Security

This article delves into the nature of "undefined behavior" in C/C++ and its impact on compiler optimizations and program security. It argues that undefined behavior allows compilers to generate highly efficient code in certain situations, but it can also lead to unpredictable program errors and even security vulnerabilities. Through case studies, the article explains how compilers leverage undefined behavior for optimization and how to mitigate the resulting risks. It advises developers to exercise caution, combining multiple tools and methods to ensure code correctness and security.