mozilla/rust — pull request #9717 by blake2-ppc (2013-10-04 17:50:08+00:00)
Title: rustc: Use static strings in a few literals

rustc: Use static strings in a few literals

Avoid allocating extra copies of strings by using "" instead of ~"" for
the debug options list and for the `time` function. This is a small
change, but it is in a path that's always executed.