Avoid zeroing large stack buffers in stdio on Windows #101193
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CI is green on windows (https://github.com/rust-lang/rust/runs/8089709575?check_suite_focus=true and https://github.com/rust-lang/rust/runs/8089709693?check_suite_focus=true), so I dropped the CI edit commit, and this should be reviewable. (edit: this is why I removed the t-infra label -- it was only here because I wanted to add windows to the CI temporarily) |
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@bors r+ rollup |
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…nton Avoid zeroing large stack buffers in stdio on Windows Does what it says on the tin, using `[MaybeUninit<u16>; N]` instead of `[0u16; N]`. These buffers seem to be around 8kb, which is big enough that this is likely to be a very nice perf boost to stdio-heavy windows code. r? `@ChrisDenton` *(Note: this PR also has a commit that adds windows to CI, but as it mentions I'll revert that after it comes out green -- I can only do a check build on the machine I'm typing this on)*
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Rollup of 10 pull requests Successful merges: - rust-lang#100804 (Fix search results color on hover for ayu theme) - rust-lang#100892 (Add `AsFd` implementations for stdio types on WASI.) - rust-lang#100927 (Adding new Fuchsia rustup docs... reworking walkthrough) - rust-lang#101088 (Set DebuginfoKind::Pdb in msvc_base) - rust-lang#101159 (add tracking issue number to const_slice_split_at_not_mut) - rust-lang#101192 (Remove path string) - rust-lang#101193 (Avoid zeroing large stack buffers in stdio on Windows) - rust-lang#101197 (:arrow_up: rust-analyzer) - rust-lang#101200 (Add test for issue rust-lang#85872) - rust-lang#101219 (Update books) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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Avoid needless buffer zeroing in `std::sys::windows::fs` Followup to rust-lang#101171 and rust-lang#101193. This finishes up avoiding buffer zeroing pointed out in rust-lang#100729 (comment) (thanks!) r? `@ChrisDenton`
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Avoid needless buffer zeroing in `std::sys::windows::fs` Followup to rust-lang/rust#101171 and rust-lang/rust#101193. This finishes up avoiding buffer zeroing pointed out in rust-lang/rust#100729 (comment) (thanks!) r? `@ChrisDenton`
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Does what it says on the tin, using
[MaybeUninit<u16>; N]instead of[0u16; N]. These buffers seem to be around 8kb, which is big enough that this is likely to be a very nice perf boost to stdio-heavy windows code.r? @ChrisDenton
(Note: this PR also has a commit that adds windows to CI, but as it mentions I'll revert that after it comes out green -- I can only do a check build on the machine I'm typing this on)