Manually walk into WF obligations in `BestObligation` proof tree visitor
When we encounter a `WellFormed` obligation in the `BestObligation` proof tree visitor, ignore the proof tree and call `wf::unnormalized_obligations` to derive well-formed obligations with the correct cause codes. This is to avoid having to replicate the somewhat delicate logic that `wf.rs` does to set up its obligation causes... Don't see a better way to do this.
vibes?? r? lcnr
Make it so more type-system types can be printed in a shortened version (like `Predicate`s).
Centralize printing the information about the "full type name path".
Make the "long type path" for the file where long types are written part of `Diag`, so that it becomes easier to keep track of it, and ensure it will always will be printed out last in the diagnostic by making its addition to the output implicit.
Tweak the shortening of types in "expected/found" labels.
Remove dead file `note.rs`.
Provide a new function `listify`, meant to be used in cases similar to `pluralize!`. When you have a slice of arbitrary elements that need to be presented to the user, `listify` allows you to turn that into a list of comma separated strings.
This reduces a lot of redundant logic that happens often in diagnostics.
Insert null checks for pointer dereferences when debug assertions are enabled
Similar to how the alignment is already checked, this adds a check
for null pointer dereferences in debug mode. It is implemented similarly
to the alignment check as a `MirPass`.
This inserts checks in the same places as the `CheckAlignment` pass and additionally
also inserts checks for `Borrows`, so code like
```rust
let ptr: *const u32 = std::ptr::null();
let val: &u32 = unsafe { &*ptr };
```
will have a check inserted on dereference. This is done because null references
are UB. The alignment check doesn't cover these places, because in `&(*ptr).field`,
the exact requirement is that the final reference must be aligned. This is something to
consider further enhancements of the alignment check.
For now this is implemented as a separate `MirPass`, to make it easy to disable
this check if necessary.
This is related to a 2025H1 project goal for better UB checks in debug
mode: https://github.com/rust-lang/rust-project-goals/pull/177.
r? `@saethlin`
only MUSL needs those objects and trying to compile them to other
targets, e.g. Windows or macOS, will produce C compilation errors
check the target before shelling out to the C compiler and tweak
`make_run` to skip the actual C compilation when the target is not MUSL
fixes#135782
Replace our `LLVMRustDIBuilderRef` with LLVM-C's `LLVMDIBuilderRef`
Inspired by trying to split #134009 into smaller steps that are easier to review individually.
This makes it possible to start incrementally replacing our debuginfo bindings with the ones in the LLVM-C API, all of which operate on `LLVMDIBuilderRef`.
There should be no change to compiler behaviour.
Improve documentation when adding a new target
https://github.com/rust-lang/rust/pull/133631#issuecomment-2607877936 shows that it can be a bit difficult process-wise to add a new target.
I've added a bit of text to the docs, suggesting that users add the target defintion/spec first, and later work on `std` support.
I also found that we have two places where we document how to add a new target. I've linked these for now, but they should probably be merged somehow in the future.
`@rustbot` label A-docs
r? compiler
CC `@workingjubilee` who's worked a lot on target specs IIRC.
Compiler: Finalize dyn compatibility renaming
Update the Reference link to use the new URL fragment from https://github.com/rust-lang/reference/pull/1666 (this change has finally hit stable). Fixes a FIXME.
Follow-up to #130826.
Part of #130852.
~~Blocking it on #133372.~~ (merged)
r? ghost
[rustdoc] Add `--extract-doctests` command-line flag
Part of https://github.com/rust-lang/rust/issues/134529.
It was discussed with the Rust-for-Linux project recently that they needed a way to extract doctests so they can modify them and then run them more easily (look for "a way to extract doctests" [here](https://github.com/Rust-for-Linux/linux/issues/2)).
For now, I output most of `ScrapedDoctest` fields in JSON format with `serde_json`. So it outputs the following information:
* filename
* line
* langstr
* text
cc `@ojeda`
r? `@notriddle`
Similar to how the alignment is already checked, this adds a check
for null pointer dereferences in debug mode. It is implemented similarly
to the alignment check as a MirPass.
This is related to a 2025H1 project goal for better UB checks in debug
mode: https://github.com/rust-lang/rust-project-goals/pull/177.
The blessed expectations were recently removed because they were only
checked via the compare-mode. This switches to explicit revisions to
ensure it doesn't happen again.
- `assignment-to-differing-field`
- `polonius-smoke-test`
- `subset-relations`
Rollup of 8 pull requests
Successful merges:
- #135414 (Stabilize `const_black_box`)
- #136150 (ci: use windows 2025 for i686-mingw)
- #136258 (rustdoc: rename `issue-\d+.rs` tests to have meaningful names (part 11))
- #136270 (Remove `NamedVarMap`.)
- #136278 (add constraint graph to polonius MIR dump)
- #136287 (LLVM changed the nocapture attribute to captures(none))
- #136291 (some test suite cleanups)
- #136296 (float::min/max: mention the non-determinism around signed 0)
r? `@ghost`
`@rustbot` modify labels: rollup
Disable `overflow_delimited_expr` in edition 2024
This reverts the style guide changes and sets the default to "false" in rustfmt for style edition 2024.
r? `@ytmimi`
cc `@rust-lang/style` `@rust-lang/rustfmt`
normalize `*.long-type.txt` paths for compare-mode tests
When using a compare mode, the name of the test + compare-mode is embedded in some of rustc's output, like the location where a long type `bla.long-type(-some-hash)?.txt` is written to. That generally makes these tests fail under all compare-modes.
This PR fixes this by normalizing the compare-mode suffix away in the stderr output. We can also see some remnants of the long-removed `nll` compare mode being normalized away ^^.
I did this to fix some failures with `--compare-mode next-solver` (but it also fixes them with e.g. `--compare-mode polonius` of course):
- it makes 9 new tests pass with the new solver
- however, 3 tests I changed here still don't pass with the new solver (IIRC there were 2 ICEs, and some duplicate errors for the 3rd one)
(There was also one that triggered slowness in the new solver while triggering the long type failure, I'll mention this on zulip. )
