scriptc

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Chris Tate e3bd44d65b Trace Array subclass instances held in array-typed slots and test their class on element reads

An Array subclass's type maps to its element array type, so a field such
as TreeNode.kids holds a Kids instance in a slot typed as an array of
TreeNode. The collector visits such a slot as an array, which has a
collector header when its element ops trace, but the class only got a
header when its own class unit was on a cycle, and the collector read a
header the instance did not have. An Array subclass now carries a header
whenever an array of its element type does, and its collector descriptor
visits its elements instead of naming no children.

An element read of an array of Array subclass instances is a union with
undefined, and 'instanceof' against the class answered false for it. A
union now tests its array arms' class at run time.

2026-10-26 21:28:56 -05:00

ambient

Merge main

2026-10-26 07:21:12 -05:00

native

Keep the native compiler's profile matching its functions

2026-10-26 15:31:14 -05:00

shims

Address review feedback on request-body streaming

2026-10-23 05:22:01 -05:00

src

Trace Array subclass instances held in array-typed slots and test their class on element reads