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Clarify Layout::pad_to_align safety comment

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Christopher Durham
2019-11-25 16:39:24 -05:00
committed by GitHub
parent 6773064b05
commit d1e53da809
1 changed files with 1 additions and 1 deletions
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src/libcore/alloc.rs
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@@ -219,7 +219,7 @@ impl Layout {
#[inline] #[inline]
pub fn pad_to_align(&self) -> Layout { pub fn pad_to_align(&self) -> Layout {
let pad = self.padding_needed_for(self.align()); let pad = self.padding_needed_for(self.align());
// This cannot overflow: it is an invariant of Layout that // This cannot overflow. Quoting from the invariant of Layout:
// > `size`, when rounded up to the nearest multiple of `align`, // > `size`, when rounded up to the nearest multiple of `align`,
// > must not overflow (i.e., the rounded value must be less than // > must not overflow (i.e., the rounded value must be less than
// > `usize::MAX`) // > `usize::MAX`)