Malte UblandClaude Opus 5.5 43cefeb56b Retag flow-narrowed unions before primitive toString() ...

`headers.host.toString()` after `!Array.isArray(headers.host)` narrows a
`string | number | string[]` slot to `string | number`, and the union
toString lowering accepted the narrowed checker type but emitted the toString
node over the wider storage union. The validator rejected the non-stringable
arm as an internal compiler error (SC9001).

The lowering now retags the read to the proven union (the same checked
coercion other narrowed reads use) before the per-union ToString helper.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

2026-10-18 15:16:15 -07:00

..

corpus

Retag flow-narrowed unions before primitive toString()

2026-10-18 15:16:15 -07:00

coverage-fixtures

Add execution tiers to the IR and a report-only tier analysis

2026-10-18 09:12:27 -07:00

deadstrip

init

2026-07-22 18:08:04 -05:00

diagnostics

Resolve builtin classes through const aliases (#1327)

2026-10-18 15:42:15 -05:00

ffi

Support three.js meshes and materials in static builds

2026-09-29 23:34:18 -05:00

fixtures

Merge main

2026-10-18 12:01:19 -05:00

harness

Resolve builtin classes through const aliases (#1327)

2026-10-18 15:42:15 -05:00

library-mode

Add the cstring class to library profiles

2026-10-17 23:40:06 -05:00

test262

Make scriptc compilation native-only

2026-10-12 12:25:30 -05:00