Add support for LLVM SafeStack
Adds support for LLVM [SafeStack] which provides backward edge control
flow protection by separating the stack into two parts: data which is
only accessed in provable safe ways is allocated on the normal stack
(the "safe stack") and all other data is placed in a separate allocation
(the "unsafe stack").
SafeStack support is enabled by passing `-Zsanitizer=safestack`.
[SafeStack]: https://clang.llvm.org/docs/SafeStack.html
cc `@rcvalle` #39699
Adds support for LLVM [SafeStack] which provides backward edge control
flow protection by separating the stack into two parts: data which is
only accessed in provable safe ways is allocated on the normal stack
(the "safe stack") and all other data is placed in a separate allocation
(the "unsafe stack").
SafeStack support is enabled by passing `-Zsanitizer=safestack`.
[SafeStack]: https://clang.llvm.org/docs/SafeStack.html
Ensure Fluent messages are in alphabetical order
Fixes#111847
This adds a tidy check to ensure Fluent messages are in alphabetical order, as well as sorting all existing messages. I think the error could be worded better, would appreciate suggestions.
<details>
<summary>Script used to sort files</summary>
```py
import sys
import re
fn = sys.argv[1]
with open(fn, 'r') as f:
data = f.read().split("\n")
chunks = []
cur = ""
for line in data:
if re.match(r"^([a-zA-Z0-9_]+)\s*=\s*", line):
chunks.append(cur)
cur = ""
cur += line + "\n"
chunks.append(cur)
chunks.sort()
with open(fn, 'w') as f:
f.write(''.join(chunks).strip("\n\n") + "\n")
```
</details>
Support #[global_allocator] without the allocator shim
This makes it possible to use liballoc/libstd in combination with `--emit obj` if you use `#[global_allocator]`. This is what rust-for-linux uses right now and systemd may use in the future. Currently they have to depend on the exact implementation of the allocator shim to create one themself as `--emit obj` doesn't create an allocator shim.
Note that currently the allocator shim also defines the oom error handler, which is normally required too. Once `#![feature(default_alloc_error_handler)]` becomes the only option, this can be avoided. In addition when using only fallible allocator methods and either `--cfg no_global_oom_handling` for liballoc (like rust-for-linux) or `--gc-sections` no references to the oom error handler will exist.
To avoid this feature being insta-stable, you will have to define `__rust_no_alloc_shim_is_unstable` to avoid linker errors.
(Labeling this with both T-compiler and T-lang as it originally involved both an implementation detail and had an insta-stable user facing change. As noted above, the `__rust_no_alloc_shim_is_unstable` symbol requirement should prevent unintended dependence on this unstable feature.)
Update cargo
10 commits in 09276c703a473ab33daaeb94917232e80eefd628..64fb38c97ac4d3a327fc9032c862dd28c8833b17
2023-05-16 21:43:35 +0000 to 2023-05-23 18:53:23 +0000
- Consider rust-version when selecting packages for cargo add (rust-lang/cargo#12078)
- fix(lints): Switch to -Zlints so stable projects can experiment (rust-lang/cargo#12168)
- Automatically inherit workspace fields when running cargo new/init (rust-lang/cargo#12069)
- ci: check if any version bump needed for member crates (rust-lang/cargo#12126)
- feat: `lints` feature (rust-lang/cargo#12148)
- fix: pass `-C debuginfo` after weakening if explicitly set (rust-lang/cargo#12165)
- Tweak build help to clarify role of --bin (rust-lang/cargo#12157)
- fix: Pass CI on nightly (rust-lang/cargo#12160)
- docs(source): doc comments for Source and its impls (rust-lang/cargo#12159)
- docs(source): doc comments for `Source` and friends (rust-lang/cargo#12153)
r? `@ghost`
Fix dependency tracking for debugger visualizers
This PR fixes dependency tracking for debugger visualizer files by changing the `debugger_visualizers` query to an `eval_always` query that scans the AST while it is still available. This way the set of visualizer files is already available when dep-info is emitted. Since the query is turned into an `eval_always` query, dependency tracking will now reliably detect changes to the visualizer script files themselves.
TODO:
- [x] perf.rlo
- [x] Needs a bit more documentation in some places
- [x] Needs regression test for the incr. comp. case
Fixes https://github.com/rust-lang/rust/issues/111226
Fixes https://github.com/rust-lang/rust/issues/111227
Fixes https://github.com/rust-lang/rust/issues/111295
r? `@wesleywiser`
cc `@gibbyfree`
Only depend on CFG_VERSION in rustc_interface
This avoids having to rebuild the whole compiler on each commit when `omit-git-hash = false`.
cc https://github.com/rust-lang/rust/issues/76720 - this won't fix it, and I'm not suggesting we turn this on by default, but it will make it less painful for people who do have `omit-git-hash` on as a workaround.
Exclude inherent projections from some alias type `match`es
Updating (hopefully) all remaining `match`es which I overlooked to update when adding `AliasKind::Inherent` in #109410.
Fixes#111399.
Sadly the regression test is a clippy test instead of a rustc one as I don't know of another way to test that a trait bound like `Ty::InhProj: Trait` doesn't cause a crash without reaching a cycle error first (this is getting old ^^').
`@rustbot` label F-inherent_associated_types
r? `@compiler-errors`
Include better context for "already exists" error in compiletest
I encountered the following error from `x.py test tests/ui` today.
```console
---- [ui] tests/ui/impl-trait/multiple-lifetimes/multiple-lifetimes.rs stdout ----
thread '[ui] tests/ui/impl-trait/multiple-lifetimes/multiple-lifetimes.rs' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 17, kind: AlreadyExists, message: "File exists" }', src/tools/compiletest/src/runtest.rs:134:43
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
```
I found it impossible to unblock myself without knowing which directory it was stuck on.
Error message after this PR:
```console
---- [ui] tests/ui/impl-trait/multiple-lifetimes/multiple-lifetimes.rs stdout ----
thread '[ui] tests/ui/impl-trait/multiple-lifetimes/multiple-lifetimes.rs' panicked at 'called `Result::unwrap()` on an `Err` value: failed to create output base directory /git/rust/build/x86_64-unknown-linux-gnu/test/ui/impl-trait/multiple-lifetimes/multiple-lifetimes
Caused by:
File exists (os error 17)', src/tools/compiletest/src/runtest.rs:139:10
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
```
Now I was able to run `rm build/x86_64-unknown-linux-gnu/test/ui/impl-trait/multiple-lifetimes/multiple-lifetimes` and unblock myself.
Seems to be related to #109509 moving *tests/ui/impl-trait/multiple-lifetimes.rs* to *tests/ui/impl-trait/multiple-lifetimes/multiple-lifetimes.rs*.
Rollup of 10 pull requests
Successful merges:
- #111428 (refactor(resolve): clean up the early error return caused by non-call)
- #111449 (Recover `impl<T ?Sized>` correctly)
- #111572 (Document that `missing_copy_implementations` and `missing_debug_implementations` only apply to public items.)
- #111602 (Suppress "erroneous constant used" for constants tainted by errors)
- #111605 (fixup version placeholder for `cfi_encoding` feature)
- #111607 (Add clubby789 to the bootstrap review rotation)
- #111614 (Add more interesting nonsense to weird-exprs.rs)
- #111617 (Fixed typo)
- #111620 (Add eholk back to compiler-contributors reviewers)
- #111621 (Fix release date of 1.58.1 in release notes.)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
Suppress "erroneous constant used" for constants tainted by errors
When constant evaluation fails because its MIR is tainted by errors,
suppress note indicating that erroneous constant was used, since those
errors have to be fixed regardless of the constant being used or not.
Fixes#110891.
Get current target config from` --print=cfg`
Compiletest was switched to querying all targets using `--print=all-target-specs-json` and `--print=target-spec-json` in #108905. This unintentionally prevented codegen flags like `-Cpanic` from being reflected in the current target configuration. This change gets the current compiletest target config using `--print=cfg` like it was previously while still using the faster prints for getting information on all other targets.
Fixes#110850.
`@jyn514` might be interested in reviewing since they commented on the issue.
cc `@tmandry` since this issue is affecting Fuchsia.
Move expansion of query macros in rustc_middle to rustc_middle::query
This moves the expansion of `define_callbacks!` and `define_feedable!` from `rustc_middle::ty::query` to `rustc_middle::query`.
This means that types used in queries are both imported and used in `rustc_middle::query` instead of being split between these modules. It also decouples `rustc_middle::ty::query` further from `rustc_middle` which is helpful since we want to move `rustc_middle::ty::query` to the query system crates.
When constant evaluation fails because its MIR is tainted by errors,
suppress note indicating that erroneous constant was used, since those
errors have to be fixed regardless of the constant being used or not.
