`trait_object_ty` assumed that associated types would be fully
determined by the trait. This is *almost* true - const parameters and
type parameters are no longer allowed, but lifetime parameters are.
Since we erase all lifetime parameters anyways, instantiate it with as
many erased regions as it needs.
Fixes: #123053
`Instance` is `Copy`
No reason to take it by value; it was confusing ``@rcvalle`` to see it being mutated when it's also being passed by ref in some places.
Import the 2021 prelude in the core crate
The `core` crate currently imports the v1 prelude
b3df0d7e5e/library/core/src/lib.rs (L285-L287)
This recently caused an issue when updating the `portable-simd` subtree since it was using a trait that was added to the 2021 prelude: https://github.com/rust-lang/rust/pull/122905#discussion_r1536228822
To make it easier to have a consistent build environment for subtrees and submodules that get included in `core`, we will now import the 2021 prelude into `core`.
Fixes#122912
r? `@Nilstrieb`
In `pretty_print_type()`, print `async fn` futures' paths instead of spans.
This makes `-Zprint-type-sizes`'s output easier to read, because the name of an `async fn` is more immediately recognizable than its span. This change will also synergize with my other `-Zprint-type-sizes` PR #122922 which prints the type of child futures being awaited.
I also deleted the comment "FIXME(eddyb) should use `def_span`." because it appears to have already been fixed by commit 67727aa7c3.
fix(bootstrap/dist): use versioned dirs when vendoring
Currently, if you attempt to run ui tests in a vendored build, you will
see this failure
```
---- [ui] tests/ui/issues/issue-21763.rs stdout ----
diff of stderr:
8 = note: required because it appears within the type `(Rc<()>, Rc<()>)`
9 = note: required for `hashbrown::raw::RawTable<(Rc<()>, Rc<()>)>` to implement `Send`
10 note: required because it appears within the type `hashbrown::map::HashMap<Rc<()>, Rc<()>, RandomState>`
- --> $HASHBROWN_SRC_LOCATION
+ --> /rust/deps/hashbrown/src/map.rs:190:12
12 note: required because it appears within the type `HashMap<Rc<()>, Rc<()>>`
13 --> $SRC_DIR/std/src/collections/hash/map.rs:LL:COL
14 note: required by a bound in `foo`
```
This happens because the code that attempts to remap
`HASHBROWN_SRC_LOCATION` expects it to be under `hashbrown-$version`,
which is the case in a normal cargo registry, but not when vendoring, where
by default crates may not have the version in their directory name.
This change passes `--versioned-dirs` to `cargo vendor` to enforce that
every crate includes the version in the subdir name, which fixes the ui
test and brings `--enable-vendor` builds closer to normal ones.
warning: casting raw pointers to the same type and constness is unnecessary (`*mut V` -> `*mut V`)
--> library\alloc\src\collections\btree\map\entry.rs:357:31
|
357 | let val_ptr = root.borrow_mut().push(self.key, value) as *mut V;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `root.borrow_mut().push
(self.key, value)`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
warning: casting to the same type is unnecessary (`usize` -> `usize`)
--> library\alloc\src\ffi\c_str.rs:411:56
|
411 | let slice = slice::from_raw_parts_mut(ptr, len as usize);
| ^^^^^^^^^^^^ help: try: `len`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
warning: casting raw pointers to the same type and constness is unnecessary (`*mut T` -> `*mut T`)
--> library\alloc\src\slice.rs:516:25
|
516 | (buf.as_mut_ptr() as *mut T).add(buf.len()),
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `buf.as_mut_ptr()`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
warning: casting raw pointers to the same type and constness is unnecessary (`*mut T` -> `*mut T`)
--> library\alloc\src\slice.rs:537:21
|
537 | (buf.as_mut_ptr() as *mut T).add(buf.len()),
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `buf.as_mut_ptr()`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
warning: casting raw pointers to the same type and constness is unnecessary (`*const ()` -> `*const ()`)
--> library\alloc\src\task.rs:151:13
|
151 | waker as *const (),
| ^^^^^^^^^^^^^^^^^^ help: try: `waker`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
warning: casting raw pointers to the same type and constness is unnecessary (`*const ()` -> `*const ()`)
--> library\alloc\src\task.rs:323:13
|
323 | waker as *const (),
| ^^^^^^^^^^^^^^^^^^ help: try: `waker`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
warning: casting to the same type is unnecessary (`usize` -> `usize`)
--> library\std\src\sys_common\net.rs:110:21
|
110 | assert!(len as usize >= mem::size_of::<c::sockaddr_in>());
| ^^^^^^^^^^^^ help: try: `len`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
warning: casting to the same type is unnecessary (`usize` -> `usize`)
--> library\std\src\sys_common\net.rs:116:21
|
116 | assert!(len as usize >= mem::size_of::<c::sockaddr_in6>());
| ^^^^^^^^^^^^ help: try: `len`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_cast
Rollup of 9 pull requests
Successful merges:
- #122842 (Don't emit an error about failing to produce a file with a specific name if user never gave an explicit name)
- #122881 (Delegation: fix ICE on `bound_vars` divergence)
- #122910 (Validate that we're only matching on unit struct for path pattern)
- #122970 (Use `chunk_by` when building `ReverseSccGraph`)
- #122988 (add even more tests! )
- #122999 (Fix unpretty UI test when /tmp does not exist)
- #123001 (Rename `{enter,exit}_lint_attrs` to `check_attributes{,_post}`)
- #123022 (Add `async-closures/once.rs` back to cranelift tests)
- #123034 (Add a bunch of needs-unwind annotations to tests)
r? `@ghost`
`@rustbot` modify labels: rollup
Rename `{enter,exit}_lint_attrs` to `check_attributes{,_post}`
Several places in Clippy want to check all the attributes of a node, we end up using `hir().attrs()` from several different `check_` functions (e.g. [in our doc lints](95c62ffae9/clippy_lints/src/doc/mod.rs (L396))) but this is error prone, we recently found that doc lints weren't triggering on struct fields for example
I went to add a `check_attributes` function but realised `enter_lint_attrs` is already this, the rename is to encourage their use
Also removes `LateContextAndPass::visit_attribute` since it's unused - `visit_attribute` for HIR visitors is only called by `hir().walk_attributes()` which lint passes do not use
Validate that we're only matching on unit struct for path pattern
Resolution doesn't validate that we only really take `CtorKind::Unit` in path patterns, since all it sees is `Res::SelfCtor(def_id)`. Check this instead during pattern typeck.
r? petrochenkov
Fixes#122809
Delegation: fix ICE on `bound_vars` divergence
Fixes https://github.com/rust-lang/rust/issues/122550.
Bug was caused by divergence between lowered type and corresponding `bound_vars` in `late_bound_vars_map`. In this patch `bound_vars` calculation for delegation item is moved from `lower_fn_ty` to `resolve_bound_vars` query.
r? `@petrochenkov`
Don't emit an error about failing to produce a file with a specific name if user never gave an explicit name
Fixes#122509
You can ask `rustc` to produce some intermediate results with `--emit foo`, this operation comes in two flavors: `--emit asm` and `--emit asm=foo.s`. First one produces one or more `.s` files without any name guarantees, second one renames it into `foo.s`. Second version only works when compiler produces a single file - for asm files this means using a single compilation unit for example.
In case compilation produced more than a single file `rustc` runs following check to emit some warnings:
```rust
if crate_output.outputs.contains_key(&output_type) {
// 2) Multiple codegen units, with `--emit foo=some_name`. We have
// no good solution for this case, so warn the user.
sess.dcx().emit_warn(errors::IgnoringEmitPath { extension });
} else if crate_output.single_output_file.is_some() {
// 3) Multiple codegen units, with `-o some_name`. We have
// no good solution for this case, so warn the user.
sess.dcx().emit_warn(errors::IgnoringOutput { extension });
} else {
// 4) Multiple codegen units, but no explicit name. We
// just leave the `foo.0.x` files in place.
// (We don't have to do any work in this case.)
}
```
Comment in the final `else` branch implies that if user didn't ask for a specific name - there's no need to emit warnings. However because of the internal representation of `crate_output.outputs` - this doesn't work as expected: if user asked to produce an asm file without giving it an implicit name it will contain `Some(None)`.
To fix the problem new code actually checks if user gave an explicit name. I think this was an original intentional behavior, at least comments imply that.
This makes `-Zprint-type-sizes`'s output easier to read, because the
name of an `async fn` is more immediately recognizable than its span.
I also deleted the comment "FIXME(eddyb) should use `def_span`." because
it appears to have already been fixed by commit 67727aa7c3.
Move `--sysroot` argument out of the argument file to fix miri issue
Fixes https://github.com/rust-lang/miri/issues/3404.
For now, miri needs this argument to be moved out of the arg file so they can update it if needed.
cc `@RalfJung`
r? `@notriddle`
phase_rustdoc: add a heuristic to make us more certain that this is really rustdoc
Also add anyhow to test-cargo-miri; it has a custom build probe and is widely used so let's make sure the build script does not fail.
