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State from_resident's borrow-window contract at its call sites

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Dennis Kobert
2026-09-07 16:11:32 +00:00
parent f07f708ee8
commit 313c591f70
2 changed files with 17 additions and 6 deletions
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7
node-graph/libraries/core-types/src/record/run.rs
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@@ -248,8 +248,11 @@ impl<'e> GroupItem<'e> {
/// A `GroupItem` over the batch's frames, without copying.
///
/// # Safety
/// The frames must stay valid for the evaluation. Arena-resident batches
/// qualify, caller stack scratch does not.
/// The item borrows the batch's frames at `'e`, so the frames must stay
/// valid for the whole of `'e` and nothing derived from the item may outlive
/// it. Arena-resident batches span the evaluation; a caller's serve scratch
/// spans only the window it lends the batch for, which is sound exactly when
/// `'e` is bounded to that window.
pub unsafe fn from_resident(batch: crate::node::RecordBatch<'e>) -> Self {
let layout = batch.layout().clone();
assert_element_glue(&layout);