Sync to upstream/release/663 #1699
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Note: Fixed conflicts by hand in: - Analysis/src/ConstraintGenerator.cpp - CodeGen/src/OptimizeConstProp.cpp - VM/src/lmathlib.cpp - tests/Conformance.test.cpp
a03c92095f6 #unflagged CLI-141149 Added lua_clonetable (#97902) d66c43f36aa #flagged CLI-140903: Do not crash on duplicate keys in table literals (#97833) 8a2687f1690 #nonprod Luau: fix a test configuration issue breaking OSS CI. (#97878) 7add6d9dde9 #nojira CI-debugger revert #unflagged CLI-132461 Luau: refactor subtyping to also include the generic mapping it came up with. (#97872) 0c731fd3cc4 #flag-removal Clip `LuauNewSolverVisitErrorExprLvalues` (#96942) 2fe783b9615 #unflagged CLI-132461 Luau: refactor subtyping to also include the generic mapping it came up with. (#97803) 0cc41a0afae #unflagged CLI-141053 Luau buffer readbits/writebits implementation for big endian machines (#97826) ae50bf04f99 #nonprod CLI-140027 Simplify require-by-string path resolution, fix bug when running CLI tools on unprefixed path (#97468) 77004599a6f #flag-removal Cleanup Luau VM and Compiler flags (#97799) 86777e269dd #flag-removal Remove LuauUserTypeFunPrintToError, LuauUserTypeFunNoExtraConstraint, LuauUserTypeFunUpdateAllEnvs, LuauUserTypeFunThreadBuffer and LuauUserTypeFunExportedAndLocal (#97624) 349b133fdc4 #nojira CI-debugger revert #unflagged CLI-132461 Luau: refactor subtyping to also include the generic mapping it came up with. (#97759) 2e820646ffa #flagged CLI-139615: Treat user defined type functions as opaque in eqSatSimplify (#96897) c0845205e37 #flag-removal CLI-140688 Clean up `FFlagLuauIntersectNormalsNeedsToTrackResourceLimits` as `true`. (#97719) 3e07876a043 #flagged CLI-140571: Track interior free table types generated during constraint solving (#97498) 199b558dc36 #unflagged CLI-132461 Luau: refactor subtyping to also include the generic mapping it came up with. (#95646) fd9255f62d3 #nonprod CLI-140762 unittest for fragment ac crash (#97669) e9c710e017f #flag-removal FFlagLuauStoreCommentsForDefinitionFiles (#93359) b184b940d55 CLI-140702 #unflagged Fix most clang-tidy warnings in TypeChecker2 (#97604) 1fc857f1bb3 CLI-140489 #unflagged Fix a potential hash collision bug in StringCache. (#97539) 58f62f900a2 #nonprod Some new unit testing macros for Luau tests. (#97336) ab43a354b25 #flag-removal Remove LuauVectorMetatable and LuauVectorDefinitionsExtra (#97528) c4c28694390 #flagged CLI-140485 Do not retain the Def/RefinementKey arenas when retainFullTypeGraphs is false (#97422)
This test fails due to a bad interaction when `FFlagLuauStoreCSTData` is enabled, whilst `FFlagLexerFixInterpStringStart` is disabled. The OSS test suite, when run with `--fflags=true`, enables all flags starting with a `Luau` prefix, but does not enable any other flag. To resolve this, we explicitly enable both fflags for the failing interpolated string test cases. As a consequence, we technically lose the check that these tests pass when all flags are disabled.
vegorov-rbx
approved these changes
Feb 28, 2025
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Hey folks, another week means another Luau release! This one features a number of bug fixes in the New Type Solver including improvements to user-defined type functions and a bunch of work to untangle some of the outstanding issues we've been seeing with constraint solving not completing in real world use. We're also continuing to make progress on crashes and other problems that affect the stability of fragment autocomplete, as we work towards delivering consistent, low-latency autocomplete for any editor environment.
New Type Solver
printwould incorrectly insert\1a number of times.intersect<T?, ~(false?)>is uninhabited #1666)refinetype family would not skip over*no-refine*discriminants (partial resolution for Solver fails in case of narrowing known type against truthy values #1424)readparentandwriteparentfor class types in user-defined type functions, replacing the incorrectly includedparentmethod.Fragment Autocomplete
Lexer and Parser
offsetin the Lexer by @aduermael in Lexer: add offset getter #1688parseExprInternal Contributors
Co-authored-by: Andy Friesen [email protected]
Co-authored-by: Ariel Weiss [email protected]
Co-authored-by: Aviral Goel [email protected]
Co-authored-by: Hunter Goldstein [email protected]
Co-authored-by: James McNellis [email protected]
Co-authored-by: Talha Pathan [email protected]
Co-authored-by: Vighnesh Vijay [email protected]
Co-authored-by: Vyacheslav Egorov [email protected]