use checked_add for upper bound

2024-01-25 20:56:52 -05:00 · 2024-01-25 20:56:52 -05:00 · 77f31ef2b2
commit 77f31ef2b2
parent 8cbff0b426
1 changed files with 2 additions and 2 deletions
--- a/library/core/src/iter/adapters/intersperse.rs
+++ b/library/core/src/iter/adapters/intersperse.rs
@ -200,10 +200,10 @@ fn intersperse_size_hint<I>(iter: &I, started: bool, next_is_some: bool) -> (usi
        lo.saturating_sub(!started as usize)
            .saturating_add(next_is_some as usize)
            .saturating_add(lo),
-        hi.map(|hi| {
+        hi.and_then(|hi| {
            hi.saturating_sub(!started as usize)
                .saturating_add(next_is_some as usize)
-                .saturating_add(hi)
+                .checked_add(hi)
        }),
    )
 }