I do agree. That ASan part of the article starts with the following sentence: "The tradeoff however is that ASan won’t detect errors such as uses of uninitializ

I do agree. That ASan part of the article starts with the following sentence: "The tradeoff however is that ASan won’t detect errors such as uses of uninitialized variables or leaks that memcheck can detect, but on the other hand it can detect more errors related to static or stack memory." Only the runtime part is considered to be less feature-complete that valgrind (because the runtime part of ASan only keeps information about allocated memory, not about memory initialization). It is compile-time instrumentation that make it possible to detect stack and global oob.