rust-lang / rust-lang/reference
[undefined.validity.union] dyn Trait raw pointer is subject to debate.. where's the debate?
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A-undefined-behavior
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- Rust
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Description
under undefined.validity.union:
dyn Traitmetadata must be a pointer to a compiler-generated vtable forTrait
(For raw pointers, this requirement remains a subject of some debate.)
which debate? where? how? I'd like to read more.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Search the Rust Reference for the undefined.validity.union section and read the surrounding discussion about raw-pointer metadata. Trace the referenced debate through the issue history or linked sources, then update the documentation with a useful pointer and concise context. Done means readers can find and understand the debate being referenced.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- documentation
- Issue type
- Documentation
- Difficulty
- 2/5
- Estimated time
- 1-3 hours
- Activity status
- Active
- Clarity
- Mostly clear
- Newbie friendliness
- 74/100