crystal
https://github.com/crystal-lang/crystal
Crystal
The Crystal Programming Language
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- Issues
- Fix downcast to a generic class without instances
- Fix interpreter for some C extensions like libpq, openssl.
- Add simple AGENTS.md to start shaping AI behavior
- Resolve generic ancestors again once every type is declared
- A subclass of a generic instance stops matching it once the type argument gains a later subclass
- A wrong argument to a receiverless call in a `with ... yield` block reports `undefined constant`
- Match with-scope overloads against their scope in call errors
- Do not emit redundant `and i1 true, ...` LLVM instructions
- Fix recursive def return type shrinking below its provisional restriction
- Add `Call#annotation(s)` and `Call#delete_annotation(s)` as an experimental API
- Docs
- Crystal not yet supported