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Malte UblandClaude Opus 5.5
205b552104
`s.add(a).add(b)`, `s.add(x) === s`, `return s.add(x)` and other reads of add()'s result were refused with "chained Set method calls": the lowered add was a void intrinsic. A used result now reads the receiver once into a slot, adds, and answers the slot, as Map's set() already does. Discarded results (statements, arrow expression bodies, `void`, for headers, comma left operands) keep the plain intrinsic, so existing programs compile unchanged. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>