rust-lang/rust — pull request #19285 by alexcrichton (2014-11-24 23:26:00+00:00)
Title: std: Leak all statically allocated TLS keys

It turns out that rustrt::at_exit() doesn't actually occur after all pthread
threads have exited (nor does atexit()), so there's not actually a known point
at which we can deallocate these keys. It's not super critical that we do so,
however, because we're about to exit anyway!

Closes #19280