I just went from "wtf is an address sanitizer" to "what's the difference between this and valgrind" to an ASAN acolyte in about 1 minute.

http://btorpey.github.io/blog/2014/03/27/using-clangs-addres...

Article mentions JVM noise, but my actual experience is with python noise. Good riddance; this is going into my CI test suite today.