This is a tracking issue for the RFC 3107: "#[derive(Default)] on enums with a #[default] attribute" (rust-lang/rfcs#3107).
The feature gate for the issue is #![feature(derive_default_enum)].

About tracking issues

Tracking issues are used to record the overall progress of implementation.
They are also used as hubs connecting to other relevant issues, e.g., bugs or open design questions.
A tracking issue is however not meant for large scale discussion, questions, or bug reports about a feature.
Instead, open a dedicated issue for the specific matter and add the relevant feature gate label.

Steps

• Implement the RFC (cc @rust-lang/compiler -- can anyone write up mentoring
  instructions?)
• Adjust documentation (see instructions on rustc-dev-guide)
• Stabilization PR (done by Stabilize derive_default_enum #94457) (see instructions on rustc-dev-guide)

Unresolved Questions

None so far

Implementation history