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Add #[must_use] to remaining alloc functions #89899
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@jkugelman Please do go ahead and add the ones whose only legitimate use for ignoring the return value is leaking memory. (In a separate PR please.) I think it's sufficiently error-prone to call something like |
@bors r+ |
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…askrgr Rollup of 4 pull requests Successful merges: - rust-lang#89789 (Add #[must_use] to thread::Builder) - rust-lang#89899 (Add #[must_use] to remaining alloc functions) - rust-lang#90401 (hermit: Implement Condvar::wait_timeout) - rust-lang#90404 (hermitkernel-target: Set OS to "none") Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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…shtriplett Add #[must_use] to alloc functions that would leak memory As [requested](rust-lang#89899 (comment)) by `@joshtriplett.` > Please do go ahead and add the ones whose only legitimate use for ignoring the return value is leaking memory. (In a separate PR please.) I think it's sufficiently error-prone to call something like alloc and ignore the result that it's legitimate to require `let _ =` for that. I added `realloc` myself. Clippy ignored it because of its `mut` argument. ```rust alloc/src/alloc.rs:123:1 alloc unsafe fn realloc(ptr: *mut u8, layout: Layout, new_size: usize) -> *mut u8; ``` Parent issue: rust-lang#89692 r? `@joshtriplett`
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I've run out of compelling reasons to group functions together across crates so I'm just going to go module-by-module. This is everything remaining from the
alloc
crate.I ignored these because they might be used to purposefully leak memory... or other allocator shenanigans? I dunno. I'll add them if y'all tell me to.
I don't know why clippy ignored these. I added them myself:
I added these non-mutating
mut
functions:I moved a few existing
#[must_use]
s from functions onto the iterator types they return:IntoIterSorted
,IntoKeys
,IntoValues
.Parent issue: #89692
r? @joshtriplett