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andrew
2026-08-06 12:50:30 -04:00
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@@ -266,6 +266,13 @@ The function saw 99; the caller still has 5. To change a caller's record on purp
a pointer — `DEF POKEIT(P@ AS PTR TO CRATE)` — and reach through it with `->`. Neither is
a special rule: both fall out of the parameter being assigned like any other variable.
A pointer parameter's own reference is kept in the call variable's inline slot, so repeated
calls do not spend the value pool. Its target remains the caller's structure. A by-value
structure parameter is different: its copied slots remain in the value pool because
`POINT Q@ AT B@` may retain a pointer to that copy after the function returns. Until escape
analysis can distinguish that case, **do not call a by-value structure-parameter function in
a loop**; bind a host global and rebind it per instance instead.
## What is checked, and what is not
A field name is checked against the set the type declared, and the refusal lists the