[saagarjha]

Valgrind, as I understand it, was essentially maintained by one engineer at Apple who has since left the company, so nobody has really updated it.

[1over137]

That's my understanding too, and I believe you're referring Greg Parker:

http://www.sealiesoftware.com/valgrind/

[plorkyeran]

He's still at Apple, but he works on the Swift runtime these days rather than C/C++ tooling.