Provide structured suggestion on unsized fields and fn params #74228
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| LL | value: &T, | ||
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| help: boxed trait objects have a statically known size |
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Isn't this help slightly misleading? T is a type parameter, not a trait object here
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This is a good point. I could say boxed types have... and that would be more accurate always at the cost of not giving people some jargon to google... I'll see if I can make it conditional on the type.
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What about "heap allocated types always have a statically known size"? Edit: last commit has this wording.
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hmm, I personally don't really like "heap allocated types", as an object of the type is allocated on the heap, not the type itself 😅
Not sure what's the best wording here, but maybe "boxed types always have a statically known size" which seems more correct to me
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I wanted to introduce a bit of jargon here, as Box is already mentioned in the code suggestion itself, to tie the concept of "heap allocations" and "Box". That being said I see your point. Lets merge this as is to avoid bitrot (I don't think the wording is outright wrong, just suboptimal), but let's open a follow up PR to improve the wording?
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@lcnr what about "the Box type always has a statically known size and allocates its contents in the heap"?
Should I squash all into one commit or just squash the fixup commits where they belong? |
Whichever you prefer, I tend to do the latter. |
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@bors r+ |
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📌 Commit 2d0f3eb has been approved by |
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🌲 The tree is currently closed for pull requests below priority 20, this pull request will be tested once the tree is reopened |
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Provide structured suggestion on unsized fields and fn params * Suggest borrowing or boxing unsized fields * Suggest borrowing fn parameters * Remove some verbosity of unsized errors * Remove `on_unimplemented` note from `trait Sized` Fix rust-lang#23286, fix rust-lang#28653. r? @davidtwco
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@bors r=davidtwco |
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📌 Commit ff75395 has been approved by |
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🌲 The tree is currently closed for pull requests below priority 5, this pull request will be tested once the tree is reopened |
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…arth Rollup of 11 pull requests Successful merges: - rust-lang#73759 (Add missing Stdin and StdinLock examples) - rust-lang#74211 (Structured suggestion when not using struct pattern) - rust-lang#74228 (Provide structured suggestion on unsized fields and fn params) - rust-lang#74252 (Don't allow `DESTDIR` to influence LLVM builds) - rust-lang#74263 (Slight reorganization of sys/(fast_)thread_local) - rust-lang#74271 (process_unix: prefer i32::*_be_bytes over manually shifting bytes) - rust-lang#74272 (pprust: support multiline comments within lines) - rust-lang#74332 (Update cargo) - rust-lang#74334 (bootstrap: Improve wording on docs for `verbose-tests`) - rust-lang#74336 (typeck: use `item_name` in cross-crate packed diag) - rust-lang#74340 (lint: use `transparent_newtype_field` to avoid ICE) Failed merges: r? @ghost
on_unimplementednote fromtrait SizedFix #23286, fix #28653.
r? @davidtwco