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Update the explanation for why we use box_new in vec! #135365

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Jan 13, 2025
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Update the explanation for why we use box_new in vec! #135365

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4 changes: 2 additions & 2 deletions library/alloc/src/macros.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -48,8 +48,8 @@ macro_rules! vec {
);
($($x:expr),+ $(,)?) => (
<[_]>::into_vec(
// Using the intrinsic produces a dramatic improvement in compile
// time when constructing arrays with many elements.
// Using the intrinsic produces a dramatic improvement in stack usage for
// unoptimized programs using this code path to construct large Vecs.
$crate::boxed::box_new([$($x),+])
)
);
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