Rollup of 6 pull requests #96218
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Rollup of 6 pull requests #96218
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Co-authored-by: Janusz Marcinkiewicz <virrages@gmail.com>
… into_pointer_or_addr
Define a `NotHandle` type, that implements `std::error::Error`, and use it as the error type in `HandleOrNull` and `HandleOrInvalid`.
Also, make the display messages more specific, and remove the `Copy` implementation.
This test's expected stderr now includes a count of the number of types that implment `Error`. This PR introduces two new types, so increment the number by two.
…=GuillaumeGomez Remove extra space before a where clause Remove extra space before where clause in the generated documentation. The fix is to move the space before the break-line so that it doesn't appear visually but is still here. Removing it completely would create things like this `impl<D> Delta<D>where D: MyTrait` (missing a space before the where) which I don't think we want. Added two regression test, first one test that the `<br>` is after the space and the second check that the `<br>` is before the spaces. Before:  After:  r? `@GuillaumeGomez`
…lan-DPC Refactor loop into iterator; simplify negation logic. is_dummy should return when a non-dummy is found, but instead is iterated until completion. With some inspiration from line 323 this was refactored to a single line that returns once a single counterexample is found.
interpret: Fix writing uninit to an allocation When calling `mark_init`, we need to also be mindful of what happens with the relocations! Specifically, when we de-init memory, we need to clear relocations in that range as well or else strange things will happen (and printing will not show the de-init, since relocations take precedence there). Fixes rust-lang/miri#2068. Here's the Miri testcase that this fixes (requires `-Zmiri-disable-validation`): ```rust use std::mem::MaybeUninit; fn main() { unsafe { let mut x = MaybeUninit::<i64>::uninit(); // Put in a ptr. x.as_mut_ptr().cast::<&i32>().write_unaligned(&0); // Overwrite parts of that pointer with 'uninit' through a Scalar. let ptr = x.as_mut_ptr().cast::<i32>(); *ptr = MaybeUninit::uninit().assume_init(); // Reading this back should hence work fine. let _c = *ptr; } } ``` Previously this failed with ``` error: unsupported operation: unable to turn pointer into raw bytes --> ../miri/uninit.rs:11:14 | 11 | let _c = *ptr; | ^^^^ unable to turn pointer into raw bytes | = help: this is likely not a bug in the program; it indicates that the program performed an operation that the interpreter does not support = note: inside `main` at ../miri/uninit.rs:11:14 ```
…=oli-obk Miri provenance cleanup Reviewing rust-lang#95826 by `@carbotaniuman` made me realize that we could clean things up a little here. `@carbotaniuman` please let me know if you're okay with landing this (it will create a lot of conflicts with your PR), or if you'd prefer incorporating the ideas from this PR into yours. I think we want to end up in a situation where the function you called `ptr_reify_alloc` returns just two things, a concrete tag and an offset. Getting an `AllocId` from a concrete tag should be infallible like now. However a concrete tag and `Tag` don't have to be the same type. r? `@oli-obk`
…rror-type, r=joshtriplett Define a dedicated error type for `HandleOrNull` and `HandleOrInvalid`. Define `NullHandleError` and `InvalidHandleError` types, that implement std::error::Error, and use them as the error types in `HandleOrNull` and `HandleOrInvalid`, This addresses [this concern](rust-lang#87074 (comment)). This is the same as rust-lang#95387. r? ```@joshtriplett```
…homcc Use futex locks on emscripten. This switches Emscripten to the futex-based lock implementations, away from pthread. Tracking issue: rust-lang#93740
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Successful merges:
HandleOrNullandHandleOrInvalid. #96195 ( Define a dedicated error type forHandleOrNullandHandleOrInvalid.)Failed merges:
r? @ghost
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