Incidentally, ASAN / MSAN / TSAN are part of Clang and GCC, not C++ itself, so they're available for other languages, e.g. Rust (https://github.com/japaric/rust-san describes how to use them) and Golang (well, TSAN and MSAN at this time).

Related: MSAN is made so much better by -fsanitize-memory-track-origins. I can't count how many times MSAN caught an error, and with that flag enabled, it directly pointed to the exact line of code at fault.