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@github-actions github-actions released this 17 Oct 17:36
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Learn about vigilant mode.

Hey everyone. In preparation for the next phase of the New Type Solver rollout, we have another round of important bugfixes.

We've also got a few improvements to the new require alias machinery and a little optimization to native codegen.

New Type Solver

  • Fix a case where Luau would erroneously simplify {} & { p: number | string } to number.
  • Fix a crash that could occur in subtyping involving generic packs.
  • Fix a case where Luau would infer a spurious union type as the result of a setmetatable call.
  • Fix #1803
  • Improve bidirectional inference of table literals in the case that the expected type has an indexer.

Luau.Require

  • Zero-initialize luarequire_Configuration function pointers before user initialization
  • Error if ambiguity is detected during alias discovery

Native Codegen

  • Do not replace known constant value with a load propagation in STORE_TVALUE

Full Changelog: 0.695...696

Co-authored-by: Annie Tang annietang@roblox.com
Co-authored-by: Hunter Goldstein hgoldstein@roblox.com
Co-authored-by: Sora Kanosue skanosue@roblox.com
Co-authored-by: Varun Saini vsaini@roblox.com
Co-authored-by: Vyacheslav Egorov vegorov@roblox.com

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