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TODO.org queues decision 141: a dyn vector is a value, copied on first write.

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Joseph Ferano 2026-09-26 18:25:08 +07:00
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@ -1379,6 +1379,10 @@ CLOSED: [2026-09-25]
dev build wipes it at a top-level agent poll; an expression run at a stop gets a scratch temp arena. dev build wipes it at a top-level agent poll; an expression run at a stop gets a scratch temp arena.
* Runtime * Runtime
** NEXT A dyn vector is a value
Decided (141): binding, assigning, capturing or passing a dyn vector acts like a typed fixed
array's copy; the pointer is shared until either side writes, which copies first. Rules out
dyn vectors as shared references, where annotating a binding would change what prints.
** TODO Heap quarantine in dev ** TODO Heap quarantine in dev
A dev build could hold freed heap blocks back from reuse for a while (Zig's debug allocator), so a read after a free sees poison rather than a new owner's data. A dev build could hold freed heap blocks back from reuse for a while (Zig's debug allocator), so a read after a free sees poison rather than a new owner's data.