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Diffstat (limited to 'library/core/tests/iter/range.rs')
| -rw-r--r-- | library/core/tests/iter/range.rs | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/library/core/tests/iter/range.rs b/library/core/tests/iter/range.rs index 9af07119a89..e31db0732e0 100644 --- a/library/core/tests/iter/range.rs +++ b/library/core/tests/iter/range.rs @@ -325,6 +325,11 @@ fn test_range_advance_by() { assert_eq!(Ok(()), r.advance_back_by(usize::MAX)); assert_eq!((r.start, r.end), (0u128 + usize::MAX as u128, u128::MAX - usize::MAX as u128)); + + // issue 122420, Step::forward_unchecked was unsound for signed integers + let mut r = -128i8..127; + assert_eq!(Ok(()), r.advance_by(200)); + assert_eq!(r.next(), Some(72)); } #[test] |