Rollup of 6 pull requests #108890
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Rollup of 6 pull requests #108890
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This approach didn't seem to work well.
+ Add some information to the README.md
…, r=pietroalbini use problem matchers for tidy CI
rust-lang#107307 Implementing "<test_binary> --list --format json" for use by IDE test explorers / runners PR 1 of 2 - wiring up just the new information + implement the command line changes i.e. --format json + tests upcoming: PR 2 of 2 - clean up "#[cfg(not(bootstrap))]" from PR 1 As per the discussions on - MCP: https://rust-lang.zulipchat.com/#narrow/stream/233931-t-compiler.2Fmajor-changes/topic/Implementing.20.22.3Ctest_binary.3E.20--list.20--form.E2.80.A6.20compiler-team.23592/near/328747548 - preRFC: https://internals.rust-lang.org/t/pre-rfc-implementing-test-binary-list-format-json-for-use-by-ide-test-explorers-runners/18308 - FYI on Discord: https://discord.com/channels/442252698964721669/459149169546887178/1075581549409484820
Retry `pred_known_to_hold_modulo_regions` with fulfillment if ambiguous Fixes rust-lang#108721 The problem here is that when we're checking `is_sized_raw` during codegen on some type that has a lot of opaques in it, something emits several nested obligations that are individually ambiguous, but when processed together in a loop then apply modulo regions. Since the `evaluate_predicates_recursively` inner loop doesn't process predicates until they stop changing, we return `EvaluatedToAmbig`, which makes the sized check return false incorrectly. See: https://github.com/rust-lang/rust/blob/f15f0ea73972786e426732c5b92ba9a904b866c4/compiler/rustc_trait_selection/src/traits/select/mod.rs#L596-L606 ... Compared to the analogous loop in the new solver: https://github.com/rust-lang/rust/blob/f15f0ea73972786e426732c5b92ba9a904b866c4/compiler/rustc_trait_selection/src/solve/mod.rs#L481-L512 To fix this, if we get ambiguous during `pred_known_to_hold_modulo_regions`, just retry the obligation in a fulfillment context. -- Unfortunately... I don't have a test for this. I've only tested this locally. Pending minimization :/ r? types
StableMIR: Proof-of-concept implementation + test This PR is part of the [project Stable MIR](https://github.com/rust-lang/project-stable-mir). The PR deletes old re-exports from rustc_smir and introduces a proof-of-concept implementation for APIs to retrieve crate information. The implementation follows the [design described here](https://hackmd.io/XhnYHKKuR6-LChhobvlT-g?view), but instead of using separate crates for the implementation, it uses separate modules inside `rustc_smir`. The API introduced at this point should be seen just as an example on how we are planning to structure the communication between tools and the compiler. I have not explored yet what should be the right granularity, the best starting point for users, neither the best way to implement it. r? ````@oli-obk````
Tweak E0740 Also drive-by suppress E0740 if it's an unresolved type.
…, r=BoxyUwU Suppress copy impl error when post-normalized type references errors Suppress spurious errors from the `Copy` impl validity check when fields have bad types *post*-normalization, instead of just pre-normalization. ---- The const-generics test regressed recently due to rust-lang#107965, cc ```@BoxyUwU.``` * I think it's because `[_; 0u32]: Copy` now fails to hold because a nested obligation `ConstArgHasType(0u32, usize)` fails. * It's interesting that `[const_error]` shows up in the type only after normalization, though, but I'm pretty sure that it's due to the evaluate call that happens when normalizing unevaluated consts.
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Successful merges:
pred_known_to_hold_modulo_regionswith fulfillment if ambiguous #108754 (Retrypred_known_to_hold_modulo_regionswith fulfillment if ambiguous)Failed merges:
r? @ghost
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