rust-lang/rfcs — pull request #256 by pnkfelix (2014-09-22 15:40:58+00:00)
Title: remove ref-counting Gc<T>

# Summary

Remove the reference-counting based `Gc` type from the standard
library and its associated support infrastructure from `rustc`.

Doing so lays a cleaner foundation upon which to prototype a proper
tracing GC, and will avoid people getting incorrect impressions of
Rust based on the current reference-counting implementation.