RISC-V Emulated Testing
Adds a disabled docker image on which to run RISC-V tests. Based on the armhf image.
Test using
```
./src/ci/docker/run.sh riscv64gc-linux
```
cc: @msizanoen1
remove leftover mentions of `skol` and `int` from the compiler
This PR mostly changes `skol` -> `placeholder` and all cases where `int` is used as a type to `i32`.
Properly encode AnonConst into crate metadata
Fixes#68104
Previous, we were encoding AnonConst as a regular Const, causing us to
treat them differently after being deserialized in another compilation
session.
Given `trait X { type U; }` the bound `<Self as X>::U` now lives
on the type, rather than the trait. This is feature gated on
`feature(generic_associated_types)` for now until more testing can
be done.
The also enabled type-generic associated types since we no longer
need "implies bounds".
We now require that projection candidates are applicable with the
idenitity substs of the trait, rather than allowing predicates that are
only applicable for certain substs.
This commit normalizes projections which contain opaque types (opaque types
are otherwise linted against, which is would have previously made the
test cases added in this commit fail).
Signed-off-by: David Wood <david@davidtw.co>
Rollup of 16 pull requests
Successful merges:
- #71420 (Specialization is unsound)
- #71899 (Refactor `try_find` a little)
- #72689 (add str to common types)
- #72791 (update coerce docs and unify relevant tests)
- #72934 (forbid mutable references in all constant contexts except for const-fns)
- #73027 (Make `need_type_info_err` more conservative)
- #73347 (Diagnose use of incompatible sanitizers)
- #73359 (shim.rs: avoid creating `Call` terminators calling `Self`)
- #73399 (Clean up E0668 explanation)
- #73436 (Clean up E0670 explanation)
- #73440 (Add src/librustdoc as an alias for src/tools/rustdoc)
- #73442 (pretty/mir: const value enums with no variants)
- #73452 (Unify region variables when projecting associated types)
- #73458 (Use alloc::Layout in DroplessArena API)
- #73484 (Update the doc for std::prelude to the correct behavior)
- #73506 (Bump Rustfmt and RLS)
Failed merges:
r? @ghost
Update the doc for std::prelude to the correct behavior
Fixes#64686.
One line change to ensure the docs are correct about the behavior of the compiler when inserting`std::prelude::v1`.
I don't think examples are necessary but I can add some (especially those from the original issue) if needed.
Unify region variables when projecting associated types
This is required to avoid cycles when evaluating auto trait predicates.
Notably, this is required to be able add Chalk types to `CtxtInterners` for `cfg(parallel_compiler)`.
r? @nikomatsakis
pretty/mir: const value enums with no variants
Fixes#72181.
This PR modifies the pretty printer and const eval in the MIR so that `destructure_const` (used in `pretty_print_const_value`) can handle enums with no variants (or types containing enums with no variants).
I'm not convinced that this is the correct approach, folks more familiar with `destructure_const` would be able to say - happy to adjust the PR. Looking through `destructure_const` and the functions that it invokes, it didn't seem like it was written to handle zero-variant-enums - I assume that case is handled earlier in some way so `destructure_const` doesn't need to under normal circumstances. It didn't seem like it would be straightforward to make `destructure_const` handle this case in a first-class-feeling way (e.g. adding a `Variants::None` variant), so this PR makes some minimal changes to avoid ICEs.
Diagnose use of incompatible sanitizers
Emit an error when incompatible sanitizer are configured through command
line options. Previously the last one configured prevailed and others
were silently ignored.
Additionally use a set to represent configured sanitizers, making it
possible to enable multiple sanitizers at once. At least in principle,
since currently all of them are considered to be incompatible with
others.
Make `need_type_info_err` more conservative
Makes sure arg patterns we are going to suggest on are actually contained within the span of the obligation that caused the inference error (credit to @lcnr for suggesting this fix).
There's a subtle trade-off regarding the handling of local patterns which I've left a comment about.
Resolves#72690
update coerce docs and unify relevant tests
Merges `test/ui/coerce` with `test/ui/coercion`.
Updates the documentation of `librustc_typeck/check/coercion.rs`.
Adds 2 new coercion tests.
add str to common types
I already expected this to be the case and it may slightly improve perf.
Afaict if we ever want to change str into a lang item this would have to get reverted.
As that would be fairly simple I don't believe this to cause any problems in the future.
Refactor `try_find` a little
~~This works like `find_map`, but mapping to a `Try` type. It stops when `Ok` is `Some(value)`, with an additional short-circuit on `Try::Error`. This is similar to the unstable `try_find`, but has the advantage of being able to directly return the user's `R: Try` type directly, rather than converting to `Result`.~~
(removed -- `try_find_map` was declined in review)
This PR also refactors `try_find` a little to match style. The `E` type parameter was unnecessary, so it's now removed. The folding closure now has reduced parametricity on just `T = Self::Item`, rather
than the whole `Self` iterator type. There's otherwise no functional change in this.
