core: improve comment

Co-authored-by: Ralf Jung <post@ralfj.de>
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joboet 2024-06-27 12:16:46 +02:00 committed by GitHub
parent 7526416ba6
commit 7e7d0a959d
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1 changed files with 2 additions and 2 deletions

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@ -68,8 +68,8 @@ pub(super) enum Flag {
#[derive(Copy, Clone)] #[derive(Copy, Clone)]
enum ArgumentType<'a> { enum ArgumentType<'a> {
Placeholder { Placeholder {
// INVARIANT: if `formatter` had type `fn(&T, _) -> _` then `value` // INVARIANT: `formatter` has type `fn(&T, _) -> _` for some `T`, and `value`
// was derived from a `&T` with lifetime `'a`. // was derived from a `&'a T`.
value: NonNull<()>, value: NonNull<()>,
formatter: unsafe fn(NonNull<()>, &mut Formatter<'_>) -> Result, formatter: unsafe fn(NonNull<()>, &mut Formatter<'_>) -> Result,
_lifetime: PhantomData<&'a ()>, _lifetime: PhantomData<&'a ()>,