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Fixes rust-lang/trait-system-refactor-initiative#214

We were not properly considering unnormalized param-env candidates in assemble_inherent_candidates_from_param.

r? lcnr

@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. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver) labels May 21, 2025
@compiler-errors compiler-errors force-pushed the param-env-candidate-unnorm branch from ad35e87 to ad59f0b Compare May 21, 2025 10:03
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lcnr commented May 21, 2025

@bors r+ rollup

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bors commented May 21, 2025

📌 Commit ad59f0b 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 May 21, 2025
bors added a commit to rust-lang-ci/rust that referenced this pull request May 21, 2025
…iaskrgr

Rollup of 7 pull requests

Successful merges:

 - rust-lang#141267 (only resolve top-level guard patterns' guards once)
 - rust-lang#141280 (Use Docker cache from the current repository)
 - rust-lang#141296 (Async drop fix for 'broken mir, place has deref as later projection')
 - rust-lang#141328 (When AsyncDrop impl is empty, sync drop generated in elaborator)
 - rust-lang#141332 (Do not eagerly fold consts in `normalize_param_env_or_error` if new solver)
 - rust-lang#141333 (Use `DeepRejectCtxt` in `assemble_inherent_candidates_from_param`)
 - rust-lang#141334 (eagerly check nested obligations when coercing fndefs)

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit ab9109a into rust-lang:master May 21, 2025
6 checks passed
@rustbot rustbot added this to the 1.89.0 milestone May 21, 2025
rust-timer added a commit to rust-lang-ci/rust that referenced this pull request May 21, 2025
Rollup merge of rust-lang#141333 - compiler-errors:param-env-candidate-unnorm, r=lcnr

Use `DeepRejectCtxt` in `assemble_inherent_candidates_from_param`

Fixes rust-lang/trait-system-refactor-initiative#214

We were not properly considering unnormalized param-env candidates in `assemble_inherent_candidates_from_param`.

r? lcnr
bors added a commit that referenced this pull request Aug 24, 2025
Make sure to treat only param where clauses as inherent

See the description in the test file.

This PR fixes a bug introduced by #141333, where we considered non-`Param` where clauses to be "inherent" for the purpose of method probing, which leads to both changes in method ambiguity (see test) and also import usage linting (and thus fixes #145185).

r? `@lcnr`
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Not considering unnormalized candidates in method selection for params
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