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implement `ConstEvaluatable` goals in new solver
this only supports stable const generics. `feature(generic_const_exprs)` needs to extend that function is non-trivial ways. Leaving this for someone else or some later date.
r? `@BoxyUwU`
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we don't yet handle `generic_const_exprs`, someone else
can do that :3
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Detect extra space in keyword for better hint
Fixes #89640
r? `@Nilstrieb`
I met the same issue, then found out this old issue :)
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Remove chalk support from the compiler
Removes chalk (`-Ztrait-solver=chalk`) from the compiler and prunes any dead code resulting from this, mainly:
* Remove the chalk compatibility layer in `compiler/rustc_traits/src/chalk`
* Remove the chalk flag `-Ztrait-solver=chalk` and its `TraitEngine` implementation
* Remove `TypeWellFormedFromEnv` (and its many `bug!()` match arms)
* Remove the chalk migration mode from compiletest
* Remove the `chalkify` UI tests (do we want to keep any of these, but migrate them to `-Ztrait-solver=next`??)
Fulfills rust-lang/types-team#93.
r? `@jackh726`
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Upgrade to indexmap 2.0.0
The new version was already added to the tree as an indirect dependency
in #113046, but now our direct dependents are using it too.
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Make RPITITs assume/require their parent method's predicates
Removes a FIXME from the `param_env` query where we were manually adding the parent function's predicates to the RPITIT's assumptions.
r? `@spastorino`
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Suggest importing for partial mod path matching in name resolving
Fixes #112590
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The specific crates have changed, but the expected "help" remains.
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davidtwco:issue-94223-external-abi-fn-ptr-in-internal-abi-fn, r=jackh726
lint/ctypes: ext. abi fn-ptr in internal abi fn
Fixes #94223.
- In the improper ctypes lint, instead of skipping functions with internal ABIs, check that the signature doesn't contain any fn-ptr types with external ABIs that aren't FFI-safe.
- When computing the ABI for fn-ptr types, remove an `unwrap` that assumed FFI-safe types in foreign fn-ptr types.
- I'm not certain that this is the correct approach.
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r=compiler-errors
Don't perform selection if inherent associated types are not enabled
Fixes #113265.
As discussed
r? `@compiler-errors`
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[rustdoc] Fix display of long inline cfg labels
Fixes #87957.
Fixes #112880.
Before:
After:
r? `@notriddle`
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Extend previous checks for external ABI fn-ptrs to use in internal
statics, constants, type aliases and algebraic data types.
Signed-off-by: David Wood <david.wood@huawei.com>
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Extend previous commit's support for checking for external fn-ptrs in
internal fn types to report errors for multiple found fn-ptrs.
Signed-off-by: David Wood <david.wood@huawei.com>
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Remove an `unwrap` that assumed FFI-safe types in foreign fn-ptr types.
Signed-off-by: David Wood <david.wood@huawei.com>
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Instead of skipping functions with internal ABIs, check that the
signature doesn't contain any fn-ptr types with external ABIs that
aren't FFI-safe.
Signed-off-by: David Wood <david.wood@huawei.com>
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implement deep normalization via the new solver
together with #112869 this should remove all uses of the old solver with `-Ztrait-solver=next`.
see https://hackmd.io/V0qsUB_fTxexfQO_pcOcrg for a description of this PR. Will move that doc to the `rustc-dev-guide` after merging this.
r? `@compiler-errors`
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Migrate GUI colors test to original CSS color format
Follow-up of https://github.com/rust-lang/rust/pull/111459.
r? `@notriddle`
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GuillaumeGomez:rustdoc-search-whitespace-as-separator, r=notriddle
rustdoc: Allow whitespace as path separator like double colon
Fixes https://github.com/rust-lang/rust/issues/108447.
I think it makes sense since it allows more common cases, however it also makes the syntax heavier. Not sure what the rest of the team thinks about it. In any case we'll need to go through FCP.
Full explanation for the changes is available [here](https://github.com/rust-lang/rust/pull/108537#issuecomment-1589480564).
r? `@notriddle`
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Add `-Zremark-dir` unstable flag to write LLVM optimization remarks to YAML
This PR adds an option for `rustc` to emit LLVM optimization remarks to a set of YAML files, which can then be digested by existing tools, like https://github.com/OfekShilon/optview2. When `-Cremark-dir` is passed, and remarks are enabled (`-Cremark=all`), the remarks will be now written to the specified directory, **instead** of being printed to standard error output. The files are named based on the CGU from which they are being generated.
Currently, the remarks are written using the LLVM streaming machinery, directly in the diagnostics handler. It seemed easier than going back to Rust and then form there back to C++ to use the streamer from the diagnostics handler. But there are many ways to implement this, of course, so I'm open to suggestions :)
I included some comments with questions into the code. Also, I'm not sure how to test this.
r? `@tmiasko`
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Fix `dropping_copy_types` lint from linting in match-arm with side-effects
This PR fixes an issue with the `dropping_copy_types` and `dropping_references` lints when not all patterns that can have side-effects were detected and ignored.
Nearly _fixes_ https://github.com/rust-lang/rust/issues/112653 (will need beta-backport to completely fix the issue)
r? ``@Nilstrieb``
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Migrate GUI colors test to original CSS color format
Follow-up of https://github.com/rust-lang/rust/pull/111459.
r? ``@notriddle``
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Implement most of MCP510
This implements most of what remains to be done for MCP510:
- turns `-C link-self-contained` into a `+`/`-` list of components, like `-C link-self-contained=+linker,+crto,+libc,+unwind,+sanitizers,+mingw`. The scaffolding is present for all these expected components to be implemented and stabilized in the future on their own time. This PR only handles the `-Zgcc-ld=lld` subset of these link-self-contained components as `-Clink-self-contained=+linker`
- handles `-C link-self-contained=y|n` as-is today, for compatibility with `rustc_codegen_ssa::back::link::self_contained`'s [explicit opt-in and opt-out](https://github.com/lqd/rust/blob/9eee230cd0a56bfba3ce65121798d9f9f4341cdd/compiler/rustc_codegen_ssa/src/back/link.rs#L1671-L1676).
- therefore supports our plan to opt out of `rust-lld` (when it's enabled by default) even for current `-Clink-self-contained` users, with e.g. `-Clink-self-contained -Clink-self-contained=-linker`
- turns `add_gcc_ld_path` into its expected final form, by using the `-C link-self-contained=+linker` CLI flag, and whether the `LinkerFlavor` has the expected `Cc::Yes` and `Lld::Yes` shape (this is not yet the case in practice for any CLI linker flavor)
- makes the [new clean linker flavors](https://github.com/rust-lang/rust/pull/96827#issuecomment-1208441595) selectable in the CLI in addition to the legacy ones, in order to opt-in to using `cc` and `lld` to emulate `-Zgcc-ld=lld`
- ensure the new `-C link-self-contained` components, and `-C linker-flavor`s are unstable, and require `-Z unstable-options` to be used
The up-to-date set of flags for the future stable CLI version of `-Zgcc-ld=lld` is currently: `-Clink-self-contained=+linker -Clinker-flavor=gnu-lld-cc -Zunstable-options`.
It's possible we'll also need to do something for distros that don't ship `rust-lld`, but maybe there are already no tool search paths to be added to `cc` in this situation anyways.
r? `@petrochenkov`
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Error when RPITITs' hidden types capture more lifetimes than their trait definitions
This implements a stricter set of captures rules for RPITITs. They now may only capture:
1. Lifetimes from the impl header (both the self type and any trait substs -- we may want to restrict just to the self type's lifetimes, but the PR makes that easy to do, too)
2. Lifetimes mentioned by the `impl Trait` in the trait method's definition.
Namely, they may not mention lifetimes from the method (early or late) that are not mentioned in the `impl Trait`.
cc #105258 which I think was trying to do this too, though I'm not super familiar with what exactly differs from that or why that one was broken.
cc #112194 (doesn't fix this issue per se, because it's still an open question, but I think this is objectively better than the status quo, and gets us closer to resolving that issue.)
Technically is a fix for the ICE in #108580, but it turns that issue into an error now. We can decide separately whether or not nested RPITITs should capture lifetimes from their parents.
r? ``@oli-obk``
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r=compiler-errors
Better messages for next on a iterator inside for loops
Fixes #102972
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fix(resolve): skip assertion judgment when NonModule is dummy
Fixes #85992
## Why #85992 panic
During `resolve_imports`, the `path_res` of the import `issue_85992_extern_2::Outcome` is pointing to `external::issue_85992_extern_2` instead of `crate::issue_85992_extern_2`. As a result `import.imported_module.set` had been executed.
Attached 1: the state of `early_resolve_ident_in_lexical_scope` during the `resolve_imports` for `use issue_85992_extern_2::Outcome` is as follows:
|iter in `visit_scopes` | `scope` | `result.binding` |
| - | - | - |
| init | - | - |
| 0 | `CrateRoot` | Err(Determined) |
| 1 | `ExternPrelude` | pointing to the `issue_85992_extern_2`(external) |
However, during finalization for `issue_85992_extern_2::Outcome`, the `innermost_result` was pointed to `crate::issue_85992_extern_2` and no ambiguity was generated, leading to a panic.
Attached 2: the state of `early_resolve_ident_in_lexical_scope` during the `finalize_import` for `use issue_85992_extern_2::Outcome` is as follows:
|iter in `visit_scopes` | `scope` | `result.binding` | `innermost_result` |
| - | - | - | - |
| init | - | - | `None` |
| 0 | `CrateRoot` | pointing to `use crate::issue_85992_extern_2` **(introdcued by dummy)** | same as `result` but with a `Some` wapper|
| 1 | `ExternPrelude` | pointing to the `issue_85992_extern_2`(external) | smae as above |
## Try to solve
Skip assertion judgment when `NonModule` is dummy
r? `@petrochenkov`
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Test benchmarks with `-Z panic-abort-tests`
During test execution, when a `#[bench]` benchmark is encountered it's executed once to check whether it works. Unfortunately that was not compatible with `-Z panic-abort-tests`: the feature works by spawning a subprocess for each test, which prevents the use of dynamic tests as we cannot pass closures to child processes, and before this PR the conversion from benchmark to test was done by turning benchmarks into dynamic tests whose closures execute the benchmark once.
The approach this PR took was to add two new kinds of `TestFn`s: `StaticBenchAsTestFn` and `DynBenchAsTestFn` (:warning: **this is a breaking change** :warning:). With that change, a `StaticBenchFn` can be converted into a `StaticBenchAsTestFn` without creating dynamic tests, and making it possible to test `#[bench]` functions with `-Z panic-abort-tests`. The subprocess test runner also had to be updated to perform the conversion from benchmark to test when appropriate.
Along with the bug fix, in the first commit I refactored how tests are executed: rather than executing the test function in multiple places across `libtest`, there is now a private `TestFn::into_runnable()` method, which returns either a `RunnableTest` or `RunnableBench`, on which you can call the `run()` method. This simplified the rest of the changes in the PR.
This PR is best reviewed commit-by-commit.
Fixes https://github.com/rust-lang/rust/issues/73509
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Use structured suggestion when telling user about `for<'a>`
```
error[E0637]: `&` without an explicit lifetime name cannot be used here
--> $DIR/E0637.rs:13:13
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LL | T: Into<&u32>,
| ^ explicit lifetime name needed here
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help: consider introducing a higher-ranked lifetime here
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LL | T: for<'a> Into<&'a u32>,
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```
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Properly implement variances_of for RPITIT GAT
This fixes some of the issues found by crater run in https://github.com/rust-lang/rust/pull/112988#issuecomment-1610019572
r? ``@compiler-errors``
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