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Walk into alias-eq nested goals even if normalization fails #125688

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merged 3 commits into from
Jun 13, 2024

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Somewhat broken due to the fact that we don't handle aliases well, nor do we handle ambiguities well. Still want to put up this incremental piece, since it improves type errors for projections whose trait refs are not satisfied.

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 labels May 28, 2024
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rustbot commented May 28, 2024

Some changes occurred to the core trait solver

cc @rust-lang/initiative-trait-system-refactor

@@ -0,0 +1,26 @@
error[E0277]: the trait bound `T: Trait` is not satisfied
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I'm so dumb -- this doesn't actually even test that this PR does anything :(

The error comes from i32: Trait WF obligation from <i32 as Trait>::Assoc.

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this test also doesn't enable -Znext-solver

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@rustbot rustbot added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels May 29, 2024
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r=me after either removing or fixing the added test

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would like another look at this

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@rustbot rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Jun 12, 2024
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lcnr commented Jun 12, 2024

@bors r+ rollup (new solver)

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bors commented Jun 12, 2024

📌 Commit 158536b 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 Jun 12, 2024
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Blessed once again

@bors r=lcnr

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bors commented Jun 12, 2024

📌 Commit 16892cf has been approved by lcnr

It is now in the queue for this repository.

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@bors r=lcnr

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bors commented Jun 12, 2024

📌 Commit 44040a0 has been approved by lcnr

It is now in the queue for this repository.

compiler-errors added a commit to compiler-errors/rust that referenced this pull request Jun 13, 2024
…=lcnr

Walk into alias-eq nested goals even if normalization fails

Somewhat broken due to the fact that we don't handle aliases well, nor do we handle ambiguities well. Still want to put up this incremental piece, since it improves type errors for projections whose trait refs are not satisfied.

r? lcnr
workingjubilee added a commit to workingjubilee/rustc that referenced this pull request Jun 13, 2024
…=lcnr

Walk into alias-eq nested goals even if normalization fails

Somewhat broken due to the fact that we don't handle aliases well, nor do we handle ambiguities well. Still want to put up this incremental piece, since it improves type errors for projections whose trait refs are not satisfied.

r? lcnr
bors added a commit to rust-lang-ci/rust that referenced this pull request Jun 13, 2024
…kingjubilee

Rollup of 11 pull requests

Successful merges:

 - rust-lang#125165 (Migrate `run-make/pgo-branch-weights` to `rmake`)
 - rust-lang#125674 (Rewrite `symlinked-extern`, `symlinked-rlib` and `symlinked-libraries` `run-make` tests in `rmake.rs` format)
 - rust-lang#125688 (Walk into alias-eq nested goals even if normalization fails)
 - rust-lang#126142 (Harmonize using root or leaf obligation in trait error reporting)
 - rust-lang#126303 (Urls to docs in rust_hir)
 - rust-lang#126328 (Add Option::is_none_or)
 - rust-lang#126337 (Add test for walking order dependent opaque type behaviour)
 - rust-lang#126351 (std::unix::fs::link using direct linkat call for Solaris.)
 - rust-lang#126353 (Move `MatchAgainstFreshVars` to old solver)
 - rust-lang#126356 (docs(rustc): Improve discoverable of Cargo docs)
 - rust-lang#126362 (Make `try_from_target_usize` method public)

r? `@ghost`
`@rustbot` modify labels: rollup
bors added a commit to rust-lang-ci/rust that referenced this pull request Jun 13, 2024
…kingjubilee

Rollup of 10 pull requests

Successful merges:

 - rust-lang#125674 (Rewrite `symlinked-extern`, `symlinked-rlib` and `symlinked-libraries` `run-make` tests in `rmake.rs` format)
 - rust-lang#125688 (Walk into alias-eq nested goals even if normalization fails)
 - rust-lang#126142 (Harmonize using root or leaf obligation in trait error reporting)
 - rust-lang#126303 (Urls to docs in rust_hir)
 - rust-lang#126328 (Add Option::is_none_or)
 - rust-lang#126337 (Add test for walking order dependent opaque type behaviour)
 - rust-lang#126353 (Move `MatchAgainstFreshVars` to old solver)
 - rust-lang#126356 (docs(rustc): Improve discoverable of Cargo docs)
 - rust-lang#126358 (safe transmute: support `Single` enums)
 - rust-lang#126362 (Make `try_from_target_usize` method public)

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit 8719cc2 into rust-lang:master Jun 13, 2024
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@rustbot rustbot added this to the 1.81.0 milestone Jun 13, 2024
rust-timer added a commit to rust-lang-ci/rust that referenced this pull request Jun 13, 2024
Rollup merge of rust-lang#125688 - compiler-errors:alias-reporting, r=lcnr

Walk into alias-eq nested goals even if normalization fails

Somewhat broken due to the fact that we don't handle aliases well, nor do we handle ambiguities well. Still want to put up this incremental piece, since it improves type errors for projections whose trait refs are not satisfied.

r? lcnr
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5 participants