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Fixes #85019
A `SourceFile` created during compilation may have a relative
path (e.g. if rustc itself is invoked with a relative path).
When we write out crate metadata, we convert all relative paths
to absolute paths using the current working direction.
However, the working directory is not included in the crate hash.
This means that the crate metadata can change while the crate
hash remains the same. Among other problems, this can cause a
fingerprint mismatch ICE, since incremental compilation uses
the crate metadata hash to determine if a foreign query is green.
This commit moves the field holding the working directory from
`Session` to `Options`, including it as part of the crate hash.
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Remove git fetch from CI
https://github.com/rust-lang/rust/pull/86623 added a call to `git fetch`, which is problematic for releases.
r? `@pietroalbini`
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Run rustdoc-gui tests in parallel
I hid the passing tests and only show the failed ones in alphabetical order:
Also this PR cuts down the execution time from ~40 to ~9 seconds
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Include attributes in removal span for unused imports.
Fixes https://github.com/rust-lang/rust/issues/87973
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Test and fix `size_hint` for slice’s [r]split* iterators
Adds extensive test (of `size_hint`) for all the _[r]split*_ iterators.
Fixes `size_hint` upper bound for _split_inclusive*_ iterators which was one higher than necessary for non-empty slices.
Fixes `size_hint` lower bound for _[r]splitn*_ iterators when _n == 0_, which was one too high.
**Lower bound being one too high was a logic error, violating the correctness condition of `size_hint`.**
_Edit:_ I’ve opened an issue for that bug, so this PR fixes #87978
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Add support for clobber_abi to asm!
This PR adds the `clobber_abi` feature that was proposed in #81092.
Fixes #81092
cc `@rust-lang/wg-inline-asm`
r? `@nagisa`
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Run RemoveZsts pass at mir-opt-level=1
per https://github.com/rust-lang/rust/pull/83177#issuecomment-803942217
This pass removes assignments to ZST places.
Perf (from https://github.com/rust-lang/rust/pull/83177#issuecomment-803442557): https://perf.rust-lang.org/compare.html?start=41b315a470d583f6446599984ff9ad3bd61012b2&end=bd5d1b96f0c64c9938feea831789e1b5bb2cd4a2
r? `@oli-obk`
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Lint against named asm labels
This adds a deny-by-default lint to prevent the use of named labels in inline `asm!`. Without a solution to #81088 about whether the compiler should rewrite named labels or a special syntax for labels, a lint against them should prevent users from writing assembly that could break for internal compiler reasons, such as inlining or anything else that could change the number of actual inline assembly blocks emitted.
This does **not** resolve the issue with rewriting labels, that still needs a decision if the compiler should do any more work to try to make them work.
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Specialize `Vec::clone_from` for `Copy` types
This should improve performance and reduce code size.
This also improves `clone_from` for `String`, `OsString` and `PathBuf`.
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Try filtering out non-const impls when we expect const impls
**TL;DR**: Associated types on const impls are now bounded; we now disallow calling a const function with bounds when the specified type param only has a non-const impl.
r? `@oli-obk`
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Move some UI tests to more suitable subdirs
The classifui result: https://gist.github.com/JohnTitor/c9e00840990b5e4a8fc562ec3571e427/e06c42226c6038da91e403c33b9947843420cf44
Some notes:
- backtrace-debuginfo.rs: previously I skipped this, I'm still not sure what the best dir is. Any ideas?
- estr-subtyping.rs: Seems a quite old test so removed, shouldn't?
- deref-suggestion.rs: moved to inference as `suggestions` is not an ideal dir.
- issue-43023.rs: a bit misclassified, moved to `derives`
cc #73494
r? `@petrochenkov`
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Name the captured upvars for closures/generators in debuginfo
Previously, debuggers print closures as something like
```
y::main::closure-0 (0x7fffffffdd34)
```
The pointer actually references to an upvar. It is not very obvious, especially for beginners.
It's because upvars don't have names before, as they are packed into a tuple. This PR names the upvars, so we can expect to see something like
```
y::main::closure-0 {_captured_ref__b: 0x[...]}
```
r? `@tmandry`
Discussed at https://github.com/rust-lang/rust/pull/84752#issuecomment-831639489 .
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Update browser-ui-test package version
r? `@notriddle`
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Updates favicon order of precedence as it matters to Chrome
Hi, this updates #75438 to fix an order of precedence issue for Chrome. Unfortunately, the last favicon defined wins when it comes to Chrome, hence the primary icon being placed last. I [brought it up](https://bugs.chromium.org/p/chromium/issues/detail?id=1104663) with the Chromium team last year, but so far it's a non-issue.
I've created an example website that mimics the behaviour in Chrome. https://sl4m.github.io/chrome-favicon/
This is what I'm seeing at the moment when viewing https://doc.rust-lang.org/core/index.html in Chrome. It's falling back to the PNG.
<img width="80" alt="Screenshot 2021-08-12 at 21 11 58" src="https://user-images.githubusercontent.com/47347/129304041-b598213e-fcd3-4df1-addb-e6feac6c35b1.png">
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Point to where clause for GATs to add bound
Fixes #84931
r? `@estebank`
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Associated functions that contain extern indicator or have `#[rustc_std_internal_symbol]` are reachable
Previously these fails to link with ``undefined reference to `foo'``:
<details>
<summary>Example 1</summary>
```rs
struct AssocFn;
impl AssocFn {
#[no_mangle]
fn foo() {}
}
fn main() {
extern "Rust" {
fn foo();
}
unsafe { foo() }
}
```
([Playground](https://play.rust-lang.org/?version=nightly&mode=debug&edition=2018&gist=f1244afcdd26e2a28445f6e82ca46b50))
</details>
<details>
<summary>Example 2</summary>
```rs
#![crate_name = "lib"]
#![crate_type = "lib"]
struct AssocFn;
impl AssocFn {
#[no_mangle]
fn foo() {}
}
```
```rs
extern crate lib;
fn main() {
extern "Rust" {
fn foo();
}
unsafe { foo() }
}
```
</details>
But I believe they should link successfully, because this works:
<details>
```rs
#[no_mangle]
fn foo() {}
fn main() {
extern "Rust" {
fn foo();
}
unsafe { foo() }
}
```
([Playground](https://play.rust-lang.org/?version=nightly&mode=debug&edition=2018&gist=789b3f283ee6126f53939429103ed98d))
</details>
This PR fixes the problem, by adding associated functions that have "custom linkage" to `reachable_set`, just like normal functions.
I haven't tested whether #76211 and [Miri](https://github.com/rust-lang/miri/issues/1837) are fixed by this PR yet, but I'm submitting this anyway since this fixes the examples above.
I added a `run-pass` test that combines my two examples above, but I'm not sure if that's the right way to test this. Maybe I should add / modify an existing codegen test (`src/test/codegen/export-no-mangle.rs`?) instead?
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Closure lint wording
Some small changes to the wording of the closure migration lint.
r? `@Aaron1011`
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Rollup of 4 pull requests
Successful merges:
- #87795 (Avoid ICE caused by suggestion)
- #87966 (Fix `command-create-pidfd` test inside unprivileged Docker containers)
- #87969 (Revert "Rollup merge of #87779 - Aaron1011:stmt-ast-id, r=petrochenkov")
- #88005 (Add rustdoc GUI test for headers)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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Add rustdoc GUI test for headers
Add test for #87861.
r? ``@notriddle``
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Revert "Rollup merge of #87779 - Aaron1011:stmt-ast-id, r=petrochenkov"
Fixes #87877
This change interacts badly with `noop_flat_map_stmt`,
which synthesizes multiple statements with the same `NodeId`.
I'm working on a better fix that will still allow us to
remove this special case. For now, let's revert the change
to fix the ICE.
This reverts commit a4262cc9841d91d48ef994b36eab323e615a7083, reversing
changes made to 8ee962f88e1be7e29482b13c7776c26b98a93bf7.
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Fix `command-create-pidfd` test inside unprivileged Docker containers
In `src/test/ui/command/command-create-pidfd.rs` (added #81825), the detection code to skip the test on unsupported platforms doesn't account for unprivileged Docker containers (CI uses privileged containers), which leads to a test failure as you can't call the `clone3` syscall in that environment. This PR enhances the detection code to also consider unprivileged containers.
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Avoid ICE caused by suggestion
When suggesting dereferencing something that can be iterable in a `for`
loop, erase lifetimes and use a fresh `ty::ParamEnv` to avoid 'region
constraints already solved' panic.
Fix #87657, fix #87709, fix #87651.
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