Rollup of 7 pull requests #99707
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Rollup of 7 pull requests #99707
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The current implementation uses a `hlt` instruction, which is the most direct way to notify a connected debugger but is not the most flexible way. This commit changes it to a call to the `abort` libc function, making it possible for a system designer to override its behavior as they see fit.
To avoid using static-pie which is not essential to the test but which was reported to cause problems on Void Linux where glibc is build without support for static-pie.
There are two errors involving `derive` and `packed`. ``` `#[derive]` can't be derived on a `#[repr(packed)]` struct with type or const parameters `#[derive]` can't be derived on a `#[repr(packed)]` struct that does not derive Copy ``` The second one overstates things. It is possible to use derive on a repr(packed) struct that doesn't derive Copy in two cases. - If all the fields within the struct meet the required alignment: 1 for `repr(packed)`, or `N` for `repr(packed(N))`. - If `Default` is the only trait derived. This commit improves things in a few ways. - Changes the errors to say `$TRAIT can't be derived on this ...`. This is more accurate, because it's just $TRAIT and *this* packed struct that are a problem, not *all* derived traits on *all* packed structs. - Adds more details to the "ERROR" lines in the test case, enough to distinguish between the two error messages. - Adds more cases to the test case that don't cause errors, e.g. `Default` derives. - Uses a wider variety of builtin traits in the test case, for better coverage.
…crum protect `std::io::Take::limit` from overflow in `read` Resolves rust-lang#94981
…rk-Simulacrum kmc-solid: Use `libc::abort` to abort a program This PR updates the target-specific abort subroutine for the [`*-kmc-solid_*`](https://doc.rust-lang.org/nightly/rustc/platform-support/kmc-solid.html) Tier 3 targets. The current implementation uses a `hlt` instruction, which is the most direct way to notify a connected debugger but is not the most flexible way. This PR changes it to call the `abort` libc function, making it possible for a system designer to override its behavior as they see fit.
Use non-relocatable code in nofile-limit.rs test To avoid using static-pie which is not essential to the test but which was reported to cause problems on Void Linux where glibc is build without support for static-pie.
…rrors, r=estebank Improve error messages involving `derive` and `packed`. There are two errors involving `derive` and `packed`. ``` `#[derive]` can't be derived on a `#[repr(packed)]` struct with type or const parameters `#[derive]` can't be derived on a `#[repr(packed)]` struct that does not derive Copy ``` The second one overstates things. It is possible to use derive on a repr(packed) struct that doesn't derive Copy in two cases. - If all the fields within the struct meet the required alignment: 1 for `repr(packed)`, or `N` for `repr(packed(N))`. - If `Default` is the only trait derived. This commit improves things in a few ways. - Changes the errors to say `this trait can't be derived on this ...`. This is more accurate, because it's just *this* trait and *this* packed struct that are a problem, not *all* derived traits on *all* packed structs. - Adds more details to the "ERROR" lines in the test case, enough to distinguish between the two error messages. - Adds more cases to the test case that don't cause errors, e.g. `Default` derives. - Uses a wider variety of builtin traits in the test case, for better coverage. r? `@estebank`
Add `sign-ext` target feature to the WASM target Some target features are still missing from that list. See rust-lang#97808 for basically the same PR by `@alexcrichton.` Related issue: rust-lang#96472. PR introducing this issue: rust-lang#87402.
…oli-obk Use `VecMap::get` in `ConstraintLocator::check` Also rename the `def_id` param to `item_def_id` because that's easily confused with `self.def_id` (which is the opaque ty did).
…Simulacrum add miri-track-caller to more intrinsic-exposing methods Follow-up to rust-lang#98674: I went through the Miri test suite to find more functions that would benefit from Miri backtrace pruning, and this is what I found. Basically anything that just exposes a potentially-UB intrinsic to the user should get this treatment.
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@bors r+ p=7 rollup=never |
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☀️ Test successful - checks-actions |
This was referenced Jul 25, 2022
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Finished benchmarking commit (2fdbf07): comparison url. Instruction countThis benchmark run did not return any relevant results for this metric. Max RSS (memory usage)Results
CyclesResults
If you disagree with this performance assessment, please file an issue in rust-lang/rustc-perf. @rustbot label: -perf-regression Footnotes |
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Successful merges:
std::io::Take::limitfrom overflow inread#95040 (protectstd::io::Take::limitfrom overflow inread)libc::abortto abort a program #95916 (kmc-solid: Uselibc::abortto abort a program)deriveandpacked. #99581 (Improve error messages involvingderiveandpacked.)sign-exttarget feature to the WASM target #99643 (Addsign-exttarget feature to the WASM target)VecMap::getinConstraintLocator::check#99659 (UseVecMap::getinConstraintLocator::check)Failed merges:
r? @ghost
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