Rollup of 4 pull requests #127848
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Rollup of 4 pull requests #127848
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These need to get their safety story straight
Add a test for rust-lang#107975 The int is zero. But also not zero. This is so much fun. This is a part of rust-lang#105107. Initially I was going to just rebase rust-lang#108445, but quite a few things changed since then: * The [mcve](rust-lang#105787 (comment)) used for rust-lang#105787 got fixed.[^upd2] * You can't just `a ?= b` for rust-lang#107975 anymore. Now you have to `a-b ?= 0`. This is what this PR does. As an additional flex, it show that three ways of converting a pointer to its address have this issue: 1. `as usize` 2. `.expose_provenance()` 3. `.addr()` * rust-lang#108425 simply got fixed. Yay. As an aside, the naming for `addr_of!` is quite unfortunate in context of provenance APIs. Because `addr_of!` gives you a pointer, but what provenance APIs refer to as "address" is the `usize` value. Oh well. UPD1: GitHub is incapable of parsing rust-lang#107975 in the PR name, so let's add it here. [^upd2]: UPD2: [The other mcve](rust-lang#105787 (comment)) does not work anymore either, saying "this behavior recently changed as a result of a bug fix; see rust-lang#56105 for details."
…tgross35 Make more Windows functions `#![deny(unsafe_op_in_unsafe_fn)]` As part of rust-lang#127747, I've evaluated some more Windows functions and added `unsafe` blocks where necessary. Some are just trivial wrappers that "inherit" the full unsafety of their function, but for others I've added some safety comments. A few functions weren't actually unsafe at all. I think they were just using `unsafe fn` to avoid an `unsafe {}` block. I'm not touching `c.rs` yet because that is partially being addressed by another PR and also I have plans to further reduce the number of wrapper functions we have in there. r? libs
Prevent double reference in generic futex In the Windows futex implementation we were a little lax at allowing references to references (i.e. `&&`) which can lead to deadlocks due to reading the wrong memory address. This uses a trait to tighten the constraints and ensure this doesn't happen. r? libs
Reviewer on vacation `@jhpratt` asked to be set as on vacation
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Rollup of 4 pull requests Successful merges: - rust-lang#127003 (Add a test for rust-lang#107975) - rust-lang#127763 (Make more Windows functions `#![deny(unsafe_op_in_unsafe_fn)]`) - rust-lang#127813 (Prevent double reference in generic futex) - rust-lang#127847 (Reviewer on vacation) r? `@ghost` `@rustbot` modify labels: rollup
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Successful merges:
#![deny(unsafe_op_in_unsafe_fn)]#127763 (Make more Windows functions#![deny(unsafe_op_in_unsafe_fn)])r? @ghost
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