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Merged
merged 1 commit into from
Jul 11, 2023
Merged

Don't suggest impl Trait in path position #113310

merged 1 commit into from
Jul 11, 2023

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@jieyouxu jieyouxu commented Jul 4, 2023

Fixes #113264.

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rustbot commented Jul 4, 2023

r? @TaKO8Ki

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@rustbot rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Jul 4, 2023
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rustbot commented Jul 4, 2023

Some changes occurred in need_type_info.rs

cc @lcnr

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jieyouxu commented Jul 4, 2023
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compiler/rustc_infer/src/infer/error_reporting/need_type_info.rs Outdated
Comment on lines 485 to 496
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@jieyouxu jieyouxu Jul 4, 2023

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Is there a less hacky way to do this check?

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I think it's better to change fn fmt_printer to not use the name ofTypeVariableOriginKind::TypeParameterDefinition if the DefId is from an argument position impl trait instead.

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@tgross35 tgross35 Jul 4, 2023

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I think reaching 11 indentation levels might be justification to refactor some of this to a function anyway 🙂

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I think it's better to change fn fmt_printer to not use the name ofTypeVariableOriginKind::TypeParameterDefinition if the DefId is from an argument position impl trait instead.

How do you check if a DefId is from an arg position impl Trait?

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tcx.generics_of(tcx.parent(def_id)), look at the https://doc.rust-lang.org/nightly/nightly-rustc/rustc_middle/ty/generics/struct.GenericParamDef.html for whether the type param is synthetic.

I am not 10% sure whether the parent is necessary 🤷 try it without, if it ices, add tcx.parent

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@jieyouxu jieyouxu Jul 5, 2023

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Thanks, I think that works, but I'm not sure if it's 100% correct.

@lcnr lcnr mentioned this pull request Jul 4, 2023
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@jieyouxu jieyouxu force-pushed the dont-suggest-impl-trait-in-paths branch from 78874c7 to aaf1a13 Compare July 5, 2023 07:50
Dylan-DPC added a commit to Dylan-DPC/rust that referenced this pull request Jul 5, 2023
@Dylan-DPC
Rollup merge of rust-lang#113319 - lcnr:type-param-def-def-id, r=comp…
b73344f 
…iler-errors

`TypeParameterDefinition` always require a `DefId`

the `None` case never actually reaches diagnostics so it feels better for diagnostics to be able to rely on the `DefId` being there, cc rust-lang#113310
compiler-errors added a commit to compiler-errors/rust that referenced this pull request Jul 5, 2023
@compiler-errors
Rollup merge of rust-lang#113319 - lcnr:type-param-def-def-id, r=comp…
5c7a7d9 
…iler-errors

`TypeParameterDefinition` always require a `DefId`

the `None` case never actually reaches diagnostics so it feels better for diagnostics to be able to rely on the `DefId` being there, cc rust-lang#113310
@jieyouxu jieyouxu force-pushed the dont-suggest-impl-trait-in-paths branch from aaf1a13 to fafc689 Compare July 7, 2023 14:44
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one nit, after that r=me

@jieyouxu jieyouxu force-pushed the dont-suggest-impl-trait-in-paths branch from fafc689 to e6b9a55 Compare July 7, 2023 15:42
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compiler/rustc_infer/src/infer/error_reporting/need_type_info.rs Outdated
Comment on lines 169 to 170
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@lcnr lcnr Jul 7, 2023 •
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please unwrap instead of using if let. Not getting Some here indicates a bug

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very astute! #113610

@jieyouxu jieyouxu force-pushed the dont-suggest-impl-trait-in-paths branch from e6b9a55 to b5208b3 Compare July 7, 2023 16:04
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lcnr commented Jul 11, 2023

@bors r+ rollup

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bors commented Jul 11, 2023

📌 Commit b5208b3 has been approved by lcnr

It is now in the queue for this repository.

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jul 11, 2023
@matthiaskrgr matthiaskrgr mentioned this pull request Jul 11, 2023
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bors added a commit to rust-lang-ci/rust that referenced this pull request Jul 11, 2023
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Auto merge of rust-lang#113577 - matthiaskrgr:rollup-vaa83ip, r=matth…
e571544 
…iaskrgr

Rollup of 4 pull requests

Successful merges:

 - rust-lang#112717 (Implement a few more rvalue translation to smir)
 - rust-lang#113310 (Don't suggest `impl Trait` in path position)
 - rust-lang#113497 (Support explicit 32-bit MIPS ABI for the synthetic object)
 - rust-lang#113560 (Lint against misplaced where-clauses on associated types in traits)

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit c6df564 into rust-lang:master Jul 11, 2023
@rustbot rustbot added this to the 1.73.0 milestone Jul 11, 2023
@matthiaskrgr matthiaskrgr mentioned this pull request Jul 12, 2023
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@jieyouxu jieyouxu deleted the dont-suggest-impl-trait-in-paths branch December 20, 2024 17:37
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Compiler suggestion ping-pongs between E0283 and E0562

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