Use select in projection lookup in `report_projection_error`
Using `for_each_relevant_impl` doesn't actually select the correct impl; we can use `select` here to actually get the correct impl with certainty. Follow-up to https://github.com/rust-lang/rust/pull/140278.
r? oli-obk
This commit does the following:
- Replaces use of rustc_type_ir by rustc_middle in rustc_infer.
- The DelayedMap type is exposed by rustc_middle so everything can be
accessed through rustc_middle in a coherent manner.
- API-layer traits, like InferCtxtLike, Interner or inherent::* must be
accessed via rustc_type_ir, not rustc_middle::ty. For this reason
these are not reexported by rustc_middle::ty.
- Replaces use of ty::Interner by rustc_type_ir::Interner in
rustc_trait_selection
Replace use of rustc_type_ir by rustc_middle
cc #138449
I want to help on this issue. I have replaced all the rustc_type_ir uses by the equivalent type in rustc_middle.
DelayedSet is also re-exposed by rustc_middle.
This commit does the following:
- Replaces use of rustc_type_ir by rustc_middle
- Removes the rustc_type_ir dependency
- The DelayedSet type is exposed by rustc_middle so everything can be
accessed through rustc_middle in a coherent manner.
Rollup of 7 pull requests
Successful merges:
- #140056 (Fix a wrong error message in 2024 edition)
- #140220 (Fix detection of main function if there are expressions around it)
- #140249 (Remove `weak` alias terminology)
- #140316 (Introduce `BoxMarker` to improve pretty-printing correctness)
- #140347 (ci: clean more disk space in codebuild)
- #140349 (ci: use aws codebuild for the `dist-x86_64-linux` job)
- #140379 (rustc-dev-guide subtree update)
r? `@ghost`
`@rustbot` modify labels: rollup
Remove `weak` alias terminology
I find the "weak" alias terminology to be quite confusing. It implies the existence of "strong" aliases (which do not exist) and I'm not really sure what about weak aliases is "weak". I much prefer "free alias" as the term. I think it's much more obvious what it means as "free function" is a well defined term that already exists in rust.
It's also a little confusing given "weak alias" is already a term in linker/codegen spaces which are part of the compiler too. Though I'm not particularly worried about that as it's usually very obvious if you're talking about the type system or not lol. I'm also currently trying to write documentation about aliases and it's somewhat awkward/confusing to be talking about *weak* aliases, when I'm not really sure what the basis for that as the term actually *is*.
I would also be happy to just find out there's a nice meaning behind calling them "weak" aliases :-)
r? `@oli-obk`
maybe we want a types MCP to decide on a specific naming here? or maybe we think its just too late to go back on this naming decision ^^'
Simply try to unpeel AsyncFnKindHelper goal in `emit_specialized_closure_kind_error`
Tweak the handling of `AsyncFnKindHelper` goals in `emit_specialized_closure_kind_error` to not be so special-casey, and just try to unpeel one or two layers of obligation causes to get to their underlying `AsyncFn*` goal.
Fixes https://github.com/rust-lang/rust/issues/140292
Don't use item name to look up associated item from trait item
This fix should be self-justifying b/c the fact that we were using identifiers here was kinda sus anyways, esp b/c we have a failproof way of doing the comparison :) I'll leave some info about why this repro needs a macro.
Fixes https://github.com/rust-lang/rust/issues/140259
r? `@nnethercote`
Make #![feature(let_chains)] bootstrap conditional in compiler/
Let chains have been stabilized recently in #132833, so we can remove the gating from our uses in the compiler (as the compiler uses edition 2024).
Remove comment about handling non-global where bounds with corresponding projection
This comment is no longer relevant since we only assemble rigid projections if no param-env candidates hold.
Also remove a stray comment from the old solver.
r? lcnr
Rename `compute_x` methods
r? ```@lcnr```
I find the `compute_x` naming scheme to be overly confusing. It means `compute_wf_obligations_for_x_and_add_them_to_self` but shortens out all of the important parts of the actual operation being performed. `compute_x` sounds like its somehow performing `x`, maybe even returning it from the function, which is not true.
I've had some newer contributors be confused by this naming scheme so I think it's good to change it to something more self-evident
Some misc drive by niceties while I was here too.
Extend HIR to track the source and syntax of a lifetime
An upcoming lint will want to be able to know if a lifetime is hidden (e.g. `&u8`, `ContainsLifetime`) or anonymous: (e.g. `&'_ u8`, `ContainsLifetime<'_>`). It will also want to know if the lifetime is related to a reference (`&u8`) or a path (`ContainsLifetime`).
r? ``@nnethercote``
I found these by grepping for `&[a-z_\.]*\.clone()`, i.e. expressions
like `&a.b.clone()`, which are sometimes unnecessary clones, and also
looking at clones nearby to cases like that.
An upcoming lint will want to be able to know if a lifetime is
hidden (e.g. `&u8`, `ContainsLifetime`) or anonymous: (e.g. `&'_ u8`,
`ContainsLifetime<'_>`). It will also want to know if the lifetime is
related to a reference (`&u8`) or a path (`ContainsLifetime`).
