rust-lang / rust-lang/rust

Tracking Issue for `core::convert::absurd` function

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#124,310 1 comment 0 reactions 0 assignees View on GitHub

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C-tracking-issue T-libs
Dominant language
Rust
Stars
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Forks
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PR merge metrics
PR metrics pending

Description

Feature gate: #![feature(convert_absurd)]

This is a tracking issue for core::convert::absurd function, which turns ! into any type.

Public API
// core::convert

pub const fn absurd<T>(x: !) -> T;
Steps / History
  • Implementation: #124311
  • Final comment period (FCP)^1
  • Stabilization PR
Unresolved Questions
  • How best to document the function (how to deal with mentions of fallback)?

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the core::convert::absurd API and feature gate convert_absurd, then review implementation issue #124311. The remaining stated question is how to document the function, including mentions of fallback; completion also requires the final comment period and a stabilization PR.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
compilers
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
25/100

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