Sanitizers
Sanitizers are dynamic analysis tools that detect memory corruption bugs, data races, and undefined behavior in C, C++, and other compiled languages during program execution. They work by instrumenting the code at compile-time to add runtime checks that monitor memory accesses, thread interactions, and other operations. Common sanitizers include AddressSanitizer (ASan), ThreadSanitizer (TSan), and UndefinedBehaviorSanitizer (UBSan), each targeting specific types of errors.
Developers should use sanitizers during development and testing to catch hard-to-find bugs like buffer overflows, use-after-free errors, and race conditions that can lead to crashes, security vulnerabilities, or unpredictable behavior. They are particularly valuable in safety-critical systems, large codebases, or when porting code to new platforms, as they provide real-time detection without requiring extensive manual code review. Sanitizers are integrated into compilers like GCC and Clang, making them easy to enable with compiler flags.