rust-lang / rust-lang/rust

Tracking Issue for `io::const_error!`

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#133,448 4 comments 2 reactions 0 assignees View on GitHub

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

Feature gate: #![feature(io_const_error)]

This is a tracking issue for const_error!, a macro to create io::Errors from a string literal without allocating.

Public API
// std::io

macro const_error($kind:expr, $message:expr $(,)?) { ... }
Steps / History
Unresolved Questions
  • None yet.

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 by reading the proposed public API and the linked ACP. The implementation is not yet identified in this tracking issue; done means completing the implementation, final comment period, and stabilization PR listed in the checklist.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
backend-api-design
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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