Four findings over 05e6ced, which no earlier round reviewed.
`SizeRequest::join` grafts the other side's nodes into this side's arena,
which happens only when both sides are expressions -- nothing in the suite
did that, so the whole thing passed with a `panic!` in that arm. It is
where a missed renumbering would be silent, since an operand copied
without remapping still names a node that exists. A fixture at two window
widths with absolute geometry covers it now, and the deferred corpus puts
an expression on both sides of one arm; both were checked to reach it by
instrumenting again. The path was already right.
`SizeRequest` grew a `Display` because a derived `Debug` of an arena is
not a tree anyone can write out again, and `describe` moved onto it -- but
`Debug` stayed derived, so the `assert_eq!`s in `cases/deferred.rs`, the
only place a request is compared, still printed the arena on failure.
`Debug` forwards to `Display`.
`Nodes::linear` asked nothing of the arena beside it: it is `Operand`'s
question, the way `RequestedLen::linear` is `RequestedLen`'s.
`describe`'s `|r| format!("{r}")` shadowed the `r: &SizeRule` four lines
above it.
Format, workspace clippy under -D warnings with and without
layout-diagnostics, 207 ordinary and 211 diagnostic tests, the cold dump
byte-identical to 05e6ced across all 34,986 boxes, and 400 depth-5 trees
in each of the three deferred corpora in 200.95s.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
The eleventh sweep, over the built-in bounds work in 2ac0843.
`Painter::size_hint` refused to answer for a bounded widget by returning
above the diagnostics, so that read was neither a hint hit nor a miss and
`hint_read` recorded nothing. It is a miss now, with the reason on it.
The two `for axis in Axis::BOTH` loops that `draw_widget` grew, both
writing `own_holds`, are one loop, and the comment about combining the
ask's holds no longer sits between a comment and the code it describes.
`Declared::from_axes` lost its only caller with `Widgets::declared_lens`;
`Bounds::from_axes` and `SizeRule::declared` never had one.
The scenario shrinker printed a rule with derived `Debug`, which is 130
characters an axis in a line that carries every ancestor, in the one
function whose job is output a tree can be rebuilt from. It prints its
parts again.
`bounds_cost` invented three environment-reading spellings where four
copies of one `env` helper already existed; there is now one, in
`tests/rig`, and the four copies are gone. It also verified 128 regions
inside its measured loop, which the other rigs deliberately do before
theirs; that measured 0.65% of the total, and none of it is layout.
The 250-window row with a 300 cap was built by two tests, and the one
that still explained itself tested less; they are one. The half of
`a_cap_attribute_narrows_the_widgets_box` that the wrapper's removal left
without its deciding assertion is the allocator's path instead, which
nothing at the root covered.
Format, workspace clippy under -D warnings with and without
layout-diagnostics, 206 ordinary and 210 diagnostic tests, 400 depth-5
trees warm against cold in 64.19s, and the cold dump byte-identical to
2ac0843 across all 34,986 boxes.
iris-aiandClaude Opus 5