rust-lang/rust — pull request #16196 by huonw (2014-08-02 12:43:54+00:00)
Title: core/std: squash dead_code warnings from fail! invocations.

The fail macro defines some function/static items internally, which got
a dead_code warning when `fail!()` is used inside a dead function. This
is ugly and unnecessarily reveals implementation details, so the
warnings can be squashed.

Fixes #16192.