iris-aiandClaude Opus 5
95fb4f962c
`Scroll` reports `LEFTOVER` on both axes because it clips its content to its box: it can neither take less of one nor honestly ask for more. `Masked` is the other widget that clips and was passing its inner's size up, so a mask over something taller than its box asked to be placed at the length it had just cut off. It reports its box now, for the same reason. The `debug_assert` the handoff has been asking for is the one that would have caught both, narrowed to what is actually true: a widget that set a mask this draw has to report inside the box it drew in. Reported as "does not exceed the box" it fires on ordinary overflow instead -- measured, a hundred fuzzer trees produce thousands of them, every one a text too tall for the box it was offered, which is what a text is meant to say. `tests/cases/scroll.rs` has a clipping widget that reports its content, to show the assertion catches it. Checked: fmt, clippy, 104 tests, all five shrinker cases at 300 seeds, 100 generated seeds, five examples byte-identical at 1920x1200. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>