Tracking issue for RFC 3678: Trait method impl restrictions (`final` methods)

[traviscross]

This is a tracking issue for RFC 3678: Trait method impl restrictions (final methods).

The feature gate for the issue is #![feature(final)].

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

• Approve as lang experiment.
  • (Approved implicitly given the circumstances.)
• Accept an RFC.
  • Trait method impl restrictions (final methods) rfcs#3678
• Implement in nightly.
  • (Implement RFC 3678: Final trait methods #130802)
  • Implement RFC 3678: Final trait methods #151783
• Add documentation to the dev guide.
  • See the instructions.
• Add documentation to the reference.
  • See the instructions.
• Add formatting for new syntax to the style guide.
  • See the nightly style procedure.
• Stabilize.
  • See the instructions.

Unresolved Questions

• final methods should work the same as without it (if it works without it) #153649

Related

TODO.

[mu001999]

@rustbot claim