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Greetings, compiler-rt hosts a hardened usermode memory allocator, named Scudo ( https://llvm.org/docs/ScudoHardenedAllocator.html). It aims at providing additional mitigation against heap-based vulnerabilities, while maintaining good performance. It leverages sanitizer_common code, and provides allocation primitives via the usual C/C++ functions. Up until now, Scudo was mostly used (as far as I

Asan and the Debug CRT take different approaches, but the problems they cover largely overlap. Both help with detection of errors like buffer overrun, double free, use after free, etc. Asan generally gives you more immediate feedback on those, but you pay a higher price in performance. Debug CRT lets you do some trade off between the performance hit and how soon it detects problems. Asan