Slava Pestov 831043c132 IRGen: Fix crash trying to emit capture descriptor involving element archetype ...

We could encode local archetypes in reflection info by performing the
local archetype transform, to get an extended generic signature together
with substitutions for the added generic parameters.

However, for now, let's just not crash. This generalizes an earlier hack
for opened existential archetypes. Instead of replacing them with
nonsensical type parameters though, let's just not emit the whole
descriptor.

- Fixes https://github.com/swiftlang/swift/issues/83539.
- Fixes rdar://157554723.

2025-08-25 12:42:49 -04:00

65 KiB

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