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Deeply normalize item bounds in new solver #137000

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merged 2 commits into from
Feb 19, 2025

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@compiler-errors compiler-errors commented Feb 14, 2025

Built on #136863.

Fixes rust-lang/trait-system-refactor-initiative#142.
Fixes rust-lang/trait-system-refactor-initiative#151.

cc rust-lang/trait-system-refactor-initiative#116

First commit reworks candidate preference for projection bounds to prefer param-env projection clauses even if the corresponding trait ref doesn't come from the param-env.

Second commit adjusts the associated type item bounds check to deeply normalize in the new solver. This causes some test fallout which I will point out.

r? lcnr

@compiler-errors compiler-errors changed the title Deeply normalize item bounds Deeply normalize item bounds in new solver Feb 14, 2025
@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 Feb 14, 2025
@@ -0,0 +1,14 @@
// Make sure that, like the old trait solver, we end up requiring that the WC of
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This is also the cause for the failures in tests/ui/traits/const-traits/predicate-entailment-passes.rs. Where clauses must be equal, which kinda makes the GATs in that test useless.

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new solver test without enabling the new solver?

also, instead of adding a new test, maybe revisions and a comment in tests/ui/generic-associated-types/issue-91883.rs are enough?

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Kinda prefer an explicit test. 91833 is a mess. I'll add flag, tho, whoops.

@@ -6,32 +6,21 @@
#[const_trait] trait Bar {}
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See below for why I ripped out the GATs from this test.

@compiler-errors compiler-errors force-pushed the deeply-normalize-item-bounds branch from 3c5af69 to 40ded6d Compare February 14, 2025 01:42
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lcnr commented Feb 17, 2025

with #136863 merged, please rebase and then r=me (though I'd like to look at the PR myself at this point again and manually approve)

@compiler-errors compiler-errors force-pushed the deeply-normalize-item-bounds branch from 40ded6d to b002b5c Compare February 17, 2025 17:21
@compiler-errors compiler-errors marked this pull request as ready for review February 17, 2025 17:21
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lcnr commented Feb 17, 2025

gamer

@bors r+ rollup

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bors commented Feb 17, 2025

📌 Commit b002b5c 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 Feb 17, 2025
Zalathar added a commit to Zalathar/rust that referenced this pull request Feb 18, 2025
…tem-bounds, r=lcnr

Deeply normalize item bounds in new solver

Built on rust-lang#136863.

Fixes rust-lang/trait-system-refactor-initiative#142.
Fixes rust-lang/trait-system-refactor-initiative#151.

cc rust-lang/trait-system-refactor-initiative#116

First commit reworks candidate preference for projection bounds to prefer param-env projection clauses even if the corresponding trait ref doesn't come from the param-env.

Second commit adjusts the associated type item bounds check to deeply normalize in the new solver. This causes some test fallout which I will point out.

r? lcnr
bors added a commit to rust-lang-ci/rust that referenced this pull request Feb 18, 2025
Rollup of 8 pull requests

Successful merges:

 - rust-lang#135767 (Future incompatibility warning `unsupported_fn_ptr_calling_conventions`: Also warn in dependencies)
 - rust-lang#136457 (Expose algebraic floating point intrinsics)
 - rust-lang#136985 (Do not ignore uninhabited types for function-call ABI purposes. (Remove BackendRepr::Uninhabited))
 - rust-lang#137000 (Deeply normalize item bounds in new solver)
 - rust-lang#137151 (Install more signal stack trace handlers)
 - rust-lang#137155 (Organize `OsString`/`OsStr` shims)
 - rust-lang#137161 (Pattern Migration 2024: fix incorrect messages/suggestions when errors arise in macro expansions)
 - rust-lang#137162 (Move methods from `Map` to `TyCtxt`, part 2.)

r? `@ghost`
`@rustbot` modify labels: rollup
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Feb 18, 2025
…tem-bounds, r=lcnr

Deeply normalize item bounds in new solver

Built on rust-lang#136863.

Fixes rust-lang/trait-system-refactor-initiative#142.
Fixes rust-lang/trait-system-refactor-initiative#151.

cc rust-lang/trait-system-refactor-initiative#116

First commit reworks candidate preference for projection bounds to prefer param-env projection clauses even if the corresponding trait ref doesn't come from the param-env.

Second commit adjusts the associated type item bounds check to deeply normalize in the new solver. This causes some test fallout which I will point out.

r? lcnr
GuillaumeGomez added a commit to GuillaumeGomez/rust that referenced this pull request Feb 18, 2025
…tem-bounds, r=lcnr

Deeply normalize item bounds in new solver

Built on rust-lang#136863.

Fixes rust-lang/trait-system-refactor-initiative#142.
Fixes rust-lang/trait-system-refactor-initiative#151.

cc rust-lang/trait-system-refactor-initiative#116

First commit reworks candidate preference for projection bounds to prefer param-env projection clauses even if the corresponding trait ref doesn't come from the param-env.

Second commit adjusts the associated type item bounds check to deeply normalize in the new solver. This causes some test fallout which I will point out.

r? lcnr
bors added a commit to rust-lang-ci/rust that referenced this pull request Feb 18, 2025
…llaumeGomez

Rollup of 11 pull requests

Successful merges:

 - rust-lang#127793 (Added project-specific Zed IDE settings)
 - rust-lang#134995 (Stabilize const_slice_flatten)
 - rust-lang#135767 (Future incompatibility warning `unsupported_fn_ptr_calling_conventions`: Also warn in dependencies)
 - rust-lang#136599 (librustdoc: more usages of `Joined::joined`)
 - rust-lang#136750 (Make ub_check message clear that it's not an assert)
 - rust-lang#137000 (Deeply normalize item bounds in new solver)
 - rust-lang#137126 (fix docs for inherent str constructors)
 - rust-lang#137151 (Install more signal stack trace handlers)
 - rust-lang#137161 (Pattern Migration 2024: fix incorrect messages/suggestions when errors arise in macro expansions)
 - rust-lang#137167 (tests: Also gate `f16::erfc()` doctest with `reliable_f16_math` cfg)
 - rust-lang#137177 (Update `minifier-rs` version to `0.3.5`)

r? `@ghost`
`@rustbot` modify labels: rollup
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Feb 18, 2025
…tem-bounds, r=lcnr

Deeply normalize item bounds in new solver

Built on rust-lang#136863.

Fixes rust-lang/trait-system-refactor-initiative#142.
Fixes rust-lang/trait-system-refactor-initiative#151.

cc rust-lang/trait-system-refactor-initiative#116

First commit reworks candidate preference for projection bounds to prefer param-env projection clauses even if the corresponding trait ref doesn't come from the param-env.

Second commit adjusts the associated type item bounds check to deeply normalize in the new solver. This causes some test fallout which I will point out.

r? lcnr
bors added a commit to rust-lang-ci/rust that referenced this pull request Feb 18, 2025
…iaskrgr

Rollup of 10 pull requests

Successful merges:

 - rust-lang#135711 (Do not ICE on default_field_value const with lifetimes)
 - rust-lang#136599 (librustdoc: more usages of `Joined::joined`)
 - rust-lang#136876 (Locking documentation updates)
 - rust-lang#137000 (Deeply normalize item bounds in new solver)
 - rust-lang#137126 (fix docs for inherent str constructors)
 - rust-lang#137161 (Pattern Migration 2024: fix incorrect messages/suggestions when errors arise in macro expansions)
 - rust-lang#137191 (Update mdbook and move error_index_generator)
 - rust-lang#137203 (Improve MIR modification)
 - rust-lang#137206 (Make E0599 a structured error)
 - rust-lang#137218 (misc `layout_of` cleanup)

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit c8d9041 into rust-lang:master Feb 19, 2025
6 checks passed
@rustbot rustbot added this to the 1.87.0 milestone Feb 19, 2025
rust-timer added a commit to rust-lang-ci/rust that referenced this pull request Feb 19, 2025
Rollup merge of rust-lang#137000 - compiler-errors:deeply-normalize-item-bounds, r=lcnr

Deeply normalize item bounds in new solver

Built on rust-lang#136863.

Fixes rust-lang/trait-system-refactor-initiative#142.
Fixes rust-lang/trait-system-refactor-initiative#151.

cc rust-lang/trait-system-refactor-initiative#116

First commit reworks candidate preference for projection bounds to prefer param-env projection clauses even if the corresponding trait ref doesn't come from the param-env.

Second commit adjusts the associated type item bounds check to deeply normalize in the new solver. This causes some test fallout which I will point out.

r? lcnr
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GATs can weaken where clauses in impl nested RPITIT in default methods result in type mismatch
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