.NET 9.0.2

Release

What's Changed

• Switch to new VMR control set by @mmitche in #17703
• Fix docs for F# language by @nojaf in #17750
• Fix17713 - Reverting PR - 17649 - Make the interaction between #line and #nowarn directives consistent by @KevinRansom in #17724
• ExcludeFromSourceBuild->ExcludeFromSourceOnlyBuild by @mmitche in #17754
• Make ILTypeDef interface calculation lazy by @DedSec256 in #17392
• FSI: make scripting temp directory one per session instead of global by @majocha in #17760
• Update Versions.props by @vzarytovskii in #17764
• reenable attribute usage in F# 9.0 by @KevinRansom in #17763
• Better ranges for CE let! and use! error reporting. by @edgarfgp in #17712
• Migrate VisualFSharp tests to Xunit by @psfinaki in #17751
• Removing Nunit from utils by @psfinaki in #17770
• Better error reporting for CE do! by @edgarfgp in #17779
• Clean up FsUnit by @psfinaki in #17781
• Eradicate Nunit by @psfinaki in #17782
• Remove a bunch of dead test data by @psfinaki in #17771
• Ensure frameworkTcImportsCache mutations are threadsafe by @majocha in #17795
• Turn off realsig when building product and proto by @vzarytovskii in #17798
• Bugfix for extension methods: Treat System.Private.CoreLib as a system lib for extension method search by @T-Gro in #17799
• Better error reporting for CE match! by @edgarfgp in #17789
• Fix 17786 - CompileBefore/CompileAfter is lost due to the FSharpSourceCodeCompileOrder target by @KevinRansom in #17791
• Respect generic arity in method uniqueness by @T-Gro in #17804
• Remove unused useSyntaxTreeCache option by @majocha in #17768
• Improve StartWithContinuations test in AsyncType tests by @majocha in #17767
• Rendering AllowsRefStruct for type parameters by @T-Gro in #17706
• Enable policheck and TSA by @vzarytovskii in #17818
• Fix concurrency issue in ILPreTypeDefImpl by @majocha in #17812
• Tests: remove dependency on CurrentDirectory ("test.ok" files) by @majocha in #17815
• CompilerOrder: set metadata for CompileFirst items by @auduchinok in #17820
• Nullness bugfix - change isObjTy early returns in ConstraintSolver by @T-Gro in #17757
• Allow decimal constants by @esbenbjerre in #17769
• Better error reporting for return, yield, return! and yield! by @edgarfgp in #17792
• Merge release/dev17.12 to main by @dotnet-bot in #17842
• 17.13 versioning by @vzarytovskii in #17844
• fix parsing table cache bug by @Martin521 in #17816
• Regression test for #14304 by @edgarfgp in #17839
• Merge release/dev17.12 to main by @dotnet-bot in #17851
• Merge release/dev17.12 to release/dev17.13 by @dotnet-bot in #17850
• Merge main to release/dev17.13 by @dotnet-bot in #17852
• Better error reporting for use by @edgarfgp in #17811
• make Assertions.withExitCode work by @Martin521 in #17830
• Localized file check-in by OneLocBuild Task: Build definition ID 499: Build ID 2555417 by @dotnet-bot in #17854
• Merge main to release/dev17.13 by @dotnet-bot in #17855
• Revamp decimal literal tests by @esbenbjerre in #17836
• Merge main to release/dev17.13 by @dotnet-bot in #17861
• Readability of lex.fsl by @Martin521 in #17817
• .NET 9rc2 by @vzarytovskii in #17860
• Merge release/dev17.12 to release/dev17.13 by @dotnet-bot in #17862
• Merge main to release/dev17.13 by @dotnet-bot in #17869
• [main] Update dependencies from dotnet/source-build-reference-packages by @dotnet-maestro in #17758
• Merge main to release/dev17.13 by @dotnet-bot in #17873
• Fix a link in release notes by @psfinaki in #17883
• Nullness bugfix :: could not assign null to member val property by @T-Gro in #17845
• Better inherit error reporting by @edgarfgp in #17879
• Asorted tests improvements by @majocha in #17840
• [main] Update dependencies from dotnet/source-build-reference-packages by @dotnet-maestro in #17875
• Merge main to release/dev17.13 by @dotnet-bot in #17885
• Better error range for struct and restricted super types inherit by @edgarfgp in #17886
• Update tools to latest versions by @vzarytovskii in #17889
• Merge main to release/dev17.13 by @dotnet-bot in #17890
• Update source-build team references by @MichaelSimons in #17894
• Merge main to release/dev17.13 by @dotnet-bot in #17892
• RFC FS-1033: Deprecate places where seq can be omitted by @edgarfgp in #17772
• Merge main to release/dev17.13 by @dotnet-bot in #17895
• Rename SourceBuildUseMonoRuntime property, which is not SB specific by @directhex in #17778
• Merge release/dev17.12 to release/dev17.13 by @dotnet-bot in #17910
• Merge main to release/dev17.13 by @dotnet-bot in #17908
• Convert OCE to empty value on certain VS operations by @0101 in #17906
• Merge release/dev17.12 to main by @dotnet-bot in #17863
• [main] Update dependencies from dotnet/source-build-reference-packages by @dotnet-maestro in #17891
• Localized file check-in by OneLocBuild Task: Build definition ID 499: Build ID 2567162 by @dotnet-bot in #17912
• Merge release/dev17.12 to main by @dotnet-bot in #17913
• Preserve console encoding when using --utf8output switch without swapping console streams by @majocha in #17761
• Fix Internal error when analysing incomplete inherit member by @edgarfgp in #17905
• Disallow abstract member with access modifiers in sig file by @ijklam in #17802
• Restore AwaitTaskCancellationAfterAsyncTokenCancellation test to original shape by @majocha in #17923
• Better ranges for implicit inherit error reporting. by @edgarfgp in #17893
• Fix potential OCE in graph processing by @majocha in #17921
• Merge main to release/dev17.13 by @dotnet-bot in #17914
• [main] Update dependencies from dnceng/internal/dotnet-optimization by @dotnet-maestro in #17919
• Merge main to release/dev17.13 by @dotnet-bot in #17926
• Fix missing TailCall warning in Sequential in use scope, #17897 by @dawedawe in #17927
• Merge main to release/dev17.13 by @dotnet-bot in #17936
• Fix Post on disposed mailbox (#17849) by @majocha in #17922
• Fix #17501 by @vzarytovskii in #17668
• simplify the code for diagnostics severity adjustment by @Martin521 in #17896
• Merge main to release/dev17.13 by @dotnet-bot in #17941
• Merge main to release/dev17.13 by @dotnet-bot in #17947
• fix OriginalLine processing in lexing by @Martin521 in #17949
• Merge main to release/dev17.13 by @dotnet-bot in #17954
• Warnings for invalid #nowarn arguments by @Martin521 in #17871
• Warn on uppercase identifiers in patterns. by @edgarfgp in #15816
• Enable parallel compilation features for users of LangVersion=preview by @T-Gro in #17948
• Merge main to release/dev17.13 by @dotnet-bot in #17958
• Fix missing nullness warning in case of multiple applicable candidates for method resolution (e.g. string and ROS) by @T-Gro in #17918
• Update README.md with contributor call out by @T-Gro in #17946
• [main] Update dependencies from dotnet/source-build-reference-packages by @dotnet-maestro in #17937
• Consolidate test helpers a bit by @psfinaki in #17938
• Some more assorted tests improvements by @majocha in #17931
• Run ILVerify by @vzarytovskii in #17953
• Refactor BufferLocalStore related code by @Martin521 in #17959
• Merge main to release/dev17.13 by @dotnet-bot in #17967
• ILVerify fixes by @vzarytovskii in #17969
• Merge main to release/dev17.13 by @dotnet-bot in #17972
• [main] Update dependencies from dotnet/source-build-reference-packages by @dotnet-maestro in #17971
• Localized file check-in by OneLocBuild Task: Build definition ID 499: Build ID 2577103 by @dotnet-bot in #17970
• String operator always returning nonNull string by @T-Gro in #17809
• Merge main to release/dev17.13 by @dotnet-bot in #17983
• Re-enable TransparentCompiler tests by @majocha in #17966
• Re-enable TransparentCompiler tests, an errata by @majocha in #17986
• Merge main to release/dev17.13 by @dotnet-bot in #17985
• [main] Update dependencies from dotnet/source-build-reference-packages by @dotnet-maestro in #17984
• Bugfix:: Make bound values available to filter clause for try-with in seq{} by @T-Gro in #17990
• Nullness - downcasting and typetests should understand nullness information by @T-Gro in #17965
• .NET 9 RTM by @vzarytovskii in #17997
• TestConsole supporting parallel execution by @majocha in #17993
• Use library-packs also when RestoreAdditionalProjectSources is explicitly set. by @tmds in #18000
• Let 'dotnet fsi --help' print a link to the documentation website. by @dawedawe in #18006
• Update DEVGUIDE.md about ILVerify by @psfinaki in #17998
• Bump MacOS by @psfinaki in #18023
• Add -sign to build.sh by @ellahathaway in #18024
• Merge main to release/dev17.13 by @dotnet-bot in #18030
• Fix singing problems by @psfinaki in #18040
• Skip flaky test by @0101 in #18051
• Remove support for System.AggressiveAttributeTrimming feature switch. by @teo-tsirpanis in #18039
• Update some internal guidelines by @psfinaki in #18052
• Simplify and reuse code around temp dirs in FSharp.Compiler.Service.Tests by @majocha in #18046
• Add Contributing.md by @KevinRansom in #18043
• [main] Update dependencies from dotnet/arcade by @dotnet-maestro in #17729
• Refactor AsyncMemoize, introduce AsyncLazy by @majocha in #18002
• Fix crashdump paths in CI by @vzarytovskii in #18065
• Various updates to ILVerify by @vzarytovskii in #18060
• Fix #18055 - Add null annotation to Async.SwitchToContext by @BoundedChenn31 in #18059
• Merge main to release/dev17.13 by @dotnet-bot in #18080
• Update insertion instructions by @0101 in #18085
• Fix #17903 by @vzarytovskii in #18025
• Some AsyncMemoize fixes by @majocha in #18074
• Support ldelem.u8, ldelem.u opcode aliases by @brianrourkeboll in #18081
• Add FSharpWorkspace to FCS by @0101 in #18032
• Fix error output in tests by @vzarytovskii in #18097
• Merge main to release/dev17.13 by @dotnet-bot in #18083
• [main] Update dependencies from dotnet/source-build-reference-packages by @dotnet-maestro in #18088
• Merge release/dev17.12 to main by @dotnet-bot in #18099
• Fix one test by @majocha in #18072
• Update INTERNAL.md with info about getting access to Darc. by @0101 in #18073
• Bugfix :: Nullness :: Add warnings for instantiations of (T|null) which are not allowed in F# (frequent at Deserialize from S.T.Json) by @T-Gro in #18057
• Merge main to release/dev17.13 by @dotnet-bot in #18102
• [main] Update dependencies from dotnet/source-build-reference-packages by @dotnet-maestro in #18107
• Merge main to release/dev17.13 by @dotnet-bot in #18108
• AsyncLazy bugfix by @majocha in #18101
• Nullness :: Bugfix :: Codegen missing metadata for C# consumers (records,DUs,exceptions) by @T-Gro in #18079
• Merge main to feature/lsp by @dotnet-bot in #18106
• Make sure CheckAndThrow is invoked only within ambient Cancellable context by @majocha in #18037
• Merge main to release/dev17.13 by @dotnet-bot in #18110
• Streamlining test deps a bit by @psfinaki in #18022
• Format ILVerify output a bit by @psfinaki in #18120
• fix for race condition in FileIndex.fileIndexOfFile by @Martin521 in #18008
• Merge release/dev17.12 to main by @dotnet-bot in #18104
• Fix how much is trimmed from an interp string part by @abonie in #18123
• Sink: report SynPat.ArrayOrList type by @DedSec256 in #18127
• Merge main to release/dev17.13 by @dotnet-bot in #18122
• Skip signing VisualFsharp.sln and FSharp.sln when building with .NET … by @ellahathaway in #18113
• Design doc on reusing typechecking results by @psfinaki in #17368
• Merge main to release/dev17.13 by @dotnet-bot in #18131
• Fix build script breaking when current directory contains spaces by @jwosty in #18136
• Merge main to release/dev17.13 by @dotnet-bot in #18133
• Make ILTypeDef super type calculation lazy by @DedSec256 in #18005
• Improved threadsafety for FileIndexTable.FileToIndex by @KevinRansom in #18137
• Merge main to release/dev17.13 by @dotnet-bot in #18138
• Shim/file system: fix leaks of the shim by @auduchinok in #18144
• Merge main to release/dev17.13 by @dotnet-bot in #18146
• Show default value of compiler options by @nih0n in #18054
• Parallelize tests by @majocha in #17872
• Merge main to release/dev17.13 by @dotnet-bot in #18151
• Exclude FileSystemTests from parallelization by @majocha in #18153
• Move INTERNAL.md to internal wiki by @0101 in #18155
• FSI: improve thread-safety by @majocha in #18152
• Symbols: try to use ValReprInfoForDisplay in Mfv.CurriedParameterGroups by @auduchinok in #18124
• Completion: fix qualified completion in sequence expressions by @auduchinok in #18111
• Support ValueOption + Struct attribute as optional parameter by @vzarytovskii in #18098
• [main] Update dependencies from dotnet/source-build-reference-packages by @dotnet-maestro in #18167
• Upgrade some runtime packages by @mthalman in #18166
• Deparallelize net9.0 tests in CI by @majocha in #18169
• [main] Update dependencies from dotnet/arcade by @dotnet-maestro in #18193
• Update System.Memory package only for source build by @0101 in #18188
• Fix GraphNode deadlock by @majocha in #18178
• Cancellable: add safer APIs to check the token by @auduchinok in #18175
• Wrap arg in parens when needed when adding new keyword by @brianrourkeboll in #18179
• Cleanup scripts by @KevinRansom in #18192
• Reduce excess memory usage in TransparentCompiler by @TheAngryByrd in #17543
• MaybeNull wrapper round nullness syntax removed and refactored for src/fsi/console.fs by @progressive-galib in #18201
• Merge main to 17.13 by @0101 in #18204
• Update VSInsertionTargetBranchName and version in dev17.13 by @0101 in #18243

New Contributors

• @esbenbjerre made their first contribution in #17769
• @directhex made their first contribution in #17778
• @nih0n made their first contribution in #18054

Full Changelog: v12.9.101...v13.9.201