.NET 10.0 Preview 2

Release

What's Changed

• Tests: Fix flaky AssemblyVersion tests by @majocha in #18268
• Replace internal option–voption conversions with FSharp.Core funcs by @brianrourkeboll in #18269
• Add reminder to check /.dotnet dir when tests fail to find SDK by @brianrourkeboll in #18271
• Add GH action to manage servicing branch codeflow. by @JoeRobich in #18267
• Add ILVerification to test framework by @KevinRansom in #18255
• Remove redundant ifdef by @majocha in #18284
• Cancellable: only cancel on OCE with own token by @auduchinok in #18277
• Bugfix :: Fix optimizer bug where field.Index included compiler generated static fields by @T-Gro in #18280
• Bugfix :: Support for 'use' on a nullable IDisposable by @T-Gro in #18262
• Cancellable: set token in more places by @auduchinok in #18283
• [main] Update dependencies from dotnet/source-build-reference-packages by @dotnet-maestro in #18281
• [main] Update dependencies from dotnet/arcade by @dotnet-maestro in #18282
• Bugfix: Warn when upcast drops nullness via FindUniqueFeasibleSupertype by @T-Gro in #18261
• Cancellable: remove UsingToken usages in tests by @auduchinok in #18276
• Bugfix :: Flexible types should subsume nullable version of equivalent CoarcesTo constraints by @T-Gro in #18266
• Bugfix:: Add missing codegen for mapping of overlapped struct DU fields and read it in fslib reflection by @T-Gro in #18274
• Add missing project reference from FSharpSuite to fsc project by @T-Gro in #18291
• Symbols: Add FSharpAssembly.IsFSharp by @auduchinok in #18290
• Bugfix :: Nullness in signature file is not considered by implementation and vice versa by @T-Gro in #18186
• Handle |null types when optimizing away equals/hash/compare from LanguagePrimitves into instance method calls by @T-Gro in #18296
• Only build the Microsoft.FSharp.Compiler.sln solution in the VMR by @jkoritzinsky in #18299
• Consolidate .Using and |null in builders by @T-Gro in #18292
• Add support for C# Experimental attribute by @edgarfgp in #18253
• React to NuGet package pruning warnings by @ViktorHofer in #18304
• More OpenTelemetry changes by @majocha in #18246
• Cancellable: fix leaking cancellation token by @auduchinok in #18295
• [main] Update dependencies from dotnet/arcade by @dotnet-maestro in #18310
• Classify nameof<'T> & match … with nameof ident -> … correctly by @brianrourkeboll in #18300
• Cancellable: hide UsingToken and simplify inlined run by @majocha in #18309
• React to NuGet package pruning warnings by @ViktorHofer in #18318
• Fix flaky tokenizer tests by @majocha in #18326
• [automated] Merge branch 'main' => 'release/dev17.14' by @github-actions in #18272
• Bugfix :: Nullness :: Allow nullable return type for first branches of match and ifthenelse expressions by @T-Gro in #18322
• Bugfix for breaking change when using Option.ofObj :: Type parameter constraint null implies not struct by @T-Gro in #18323
• [automated] Merge branch 'main' => 'release/dev17.14' by @github-actions in #18332

New Contributors

• @JoeRobich made their first contribution in #18267
• @jkoritzinsky made their first contribution in #18299

Full Changelog: v13.9.300-beta.25079.4...v13.9.300-beta.25124.4

.NET 10.0 Preview 1

Release

What's Changed

• Handle some flaky ProjectAnalysisTests cases by @majocha in #18200
• Improve directory attribute refactor - Break up PR #18161 - Part 1 by @KevinRansom in #18195
• src/Compiler/TypedTree/TypedTreePickle.fs and refactored. by @progressive-galib in #18203
• Improve directory attribute refactor - Break up PR #18161 - Part 2 by @KevinRansom in #18196
• Improve directory attribute refactor - Break up PR #18161 - Part 3 by @KevinRansom in #18197
• Remove unnecessary overrides in TestConsole by @majocha in #18208
• Show obsolete warnings/errors when used with unit of measure by @edgarfgp in #18182
• Merge release/dev17.13 to main by @dotnet-bot in #18214
• Versioning for 17.14 and 9.0.300 by @vzarytovskii in #18222
• Fix AsyncLazy cancellation by @majocha in #18211
• OpenTelemetry instrumentation for xUnit tests by @majocha in #18230
• Make nullness equivalent warning message clearer. by @isaacabraham in #18172
• [main] Update dependencies from dotnet/source-build-reference-packages by @dotnet-maestro in #18226
• [main] Update dependencies from dotnet/arcade by @dotnet-maestro in #18227
• Fix fsi auto-loading of script file inside NuGet package. by @teo-tsirpanis in #18177
• Fix #17797 -- Realsig+ generates nested closures with incorrect Generic arguments by @KevinRansom in #17877
• "#if" directive around nullness removed fromsrc/Compiler/DependencyManager/DependencyProvider.fs and refactored. by @progressive-galib in #18207
• Enable OpenTelemetry for Desktop target in xUnit tests by @majocha in #18233
• [main] Update dependencies from dotnet/arcade by @dotnet-maestro in #18240
• Set Cancellable.token from async computation by @majocha in #18238
• Simplify Dependencies a tad by @KevinRansom in #18236
• [main] Update dependencies from dotnet/source-build-reference-packages by @dotnet-maestro in #18242
• Added missing type constraints in FCS by @ncave in #18241
• Merge main to release/dev17.14 by @dotnet-bot in #18244
• Fix internal error when missing measure attribute in an unsolved measure typar by @edgarfgp in #18234
• Update Obsolete attribute checking to account for diagnosticId and urlFormat properties by @edgarfgp in #18224
• Merge main to release/dev17.14 by @dotnet-bot in #18249
• Merge release/dev17.13 to main by @dotnet-bot in #18248
• Merge main to release/dev17.14 by @dotnet-bot in #18251
• Remove FSharpProjectOptions from Transparent Compiler check results by @0101 in #18205
• Update devcontainer .NET version + bump to latest fscore version by @vzarytovskii in #18257
• Merge main to release/dev17.14 by @dotnet-bot in #18258
• Took some fixes from FSharp.TypeProvider.SDK to TestTP. by @Thorium in #18252
• Pass restore config file arg to bootstrap build by @mmitche in #18260
• Merge main to release/dev17.14 by @dotnet-bot in #18264

Full Changelog: v13.9.201...v13.9.300-beta.25079.4

.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...

.NET 9.0.1

Release

What's Changed

• Update microsoft.build for dev17.4 branch by @KevinRansom in #16902
• Update Microsoft.Build dependency for Dev17.5 by @KevinRansom in #16897
• Localized file check-in by OneLocBuild Task: Build definition ID 499: Build ID 2409578 by @dotnet-bot in #16910
• signing fix for Update to17.4 by @KevinRansom in #16917
• Revert 17.4 by @KevinRansom in #16925
• revert Update17.5 by @KevinRansom in #16926
• Merge release/dev17.4 to release/dev17.5 by @dotnet-bot in #16928
• Merge release/dev17.5 to release/dev17.6 by @dotnet-bot in #16932
• Support empty-bodied computation expressions by @brianrourkeboll in #17352
• Merge release/dev17.11 to main by @dotnet-bot in #17380
• Attribute targets on records by @edgarfgp in #17207
• Merge release/dev17.11 to main by @dotnet-bot in #17390
• Change default compression setting for compiler + bump versions by @KevinRansom in #17383
• [main] Update dependencies from dotnet/source-build-reference-packages by @dotnet-maestro in #17199
• Defaultrealsig by @KevinRansom in #17385
• New issue template for bugs related to Nullable Reference Types by @T-Gro in #17357
• Fixes #17376 - Compiler hangs when compiling inline recursive invocation #17376 by @KevinRansom in #17394
• Update to latest released SDK and fslib by @vzarytovskii in #17406
• Merge main to feature/nullness by @dotnet-bot in #17399
• Create UseLocalCompiler.Directory.Build.props by @vzarytovskii in #17396
• C# collection expression support for F# lists & sets by @brianrourkeboll in #17359
• Merge main to feature/nullness by @dotnet-bot in #17413
• [RFC FS-1060] Nullness checking by @dsyme in #15181
• Slight cleanup of dead and repeated code by @KevinRansom in #17412
• Attribute targets on unions by @edgarfgp in #17389
• Default to .NET9 by @vzarytovskii in #17426
• Merge main to release/dev17.12 by @dotnet-bot in #17434
• Minor feature cleanup by @brianrourkeboll in #17421
• Skip a flaky test by @psfinaki in #17431
• Merge main to release/dev17.12 by @dotnet-bot in #17437
• Fix reporting IsFromComputationExpression for inappropriate symbols by @DedSec256 in #17375
• Merge main to release/dev17.12 by @dotnet-bot in #17443
• Module functions for 'T option ↔ 'T voption by @brianrourkeboll in #17436
• Make loading of FSharp.Build optional in UseLocalCompiler.Directory.Build.props by @vzarytovskii in #17417
• Remove xliff-tasks from Version.Details.xml by @ViktorHofer in #17430
• Update docs for an operator by @psfinaki in #17427
• Optimize simple mappings with binds and/or sequentials before single yield by @brianrourkeboll in #17419
• Prefix-to-infix code fix: don't throw if error range extends to EOF by @brianrourkeboll in #17448
• Skip another flaky test by @psfinaki in #17441
• Optimize metadata members and custom attributes reading by @DedSec256 in #17364
• Merge main to release/dev17.12 by @dotnet-bot in #17450
• Treat { new Foo() } as SynExpr.ObjExpr by @edgarfgp in #17388
• Merge main to release/dev17.12 by @dotnet-bot in #17458
• Merge main to release/dev17.12 by @dotnet-bot in #17461
• Fixes #17438 - Ensure that isinteractive multi-emit backing fields are not public by @KevinRansom in #17439
• Refactor expression checking by @vzarytovskii in #17456
• Change constraint mismatch for 'supports null' from warning to error by @T-Gro in #17462
• Merge main to release/dev17.12 by @dotnet-bot in #17463
• C# protected property can be assigned in a F# inherit constructor call by @edgarfgp in #17391
• Merge main to release/dev17.12 by @dotnet-bot in #17466
• Fixes #17447 -MethodAccessException on equality comparison of a record with private fields by @KevinRansom in #17467
• Remove unused values from TcGlobals by @KevinRansom in #17422
• Sink: report function domain type by @auduchinok in #17470
• Parser: recover on missing union case fields by @auduchinok in #17452
• Parser: recover on missing union case field types by @auduchinok in #17455
• Fix incorrect example result in list module documentation for 'fold2'. by @hampussle in #17475
• Merge main to release/dev17.12 by @dotnet-bot in #17469
• Nullness - prevent duplicate warnings coming from speculative method resolution by @T-Gro in #17477
• Merge main to release/dev17.12 by @dotnet-bot in #17489
• Refactor CE checking by @vzarytovskii in #17464
• Merge main to release/dev17.12 by @dotnet-bot in #17491
• Merge main to release/dev17.12 by @dotnet-bot in #17493
• Merge main to release/dev17.12 by @dotnet-bot in #17498
• Tests the scenario when calling protected static base member from static do by @edgarfgp in #17484
• Fix object-expr untested cases by @edgarfgp in #17476
• [main] Update dependencies from dotnet/arcade by @dotnet-maestro in #17429
• C# params interop tests by @psfinaki in #17495
• [main] Update dependencies from dotnet/source-build-reference-packages by @dotnet-maestro in #17435
• Update DefaultAugmentationAttribute by @KevinRansom in #17502
• Pass SynPat.Typed nodes to original continuation. by @nojaf in #17510
• Merge main to release/dev17.12 by @dotnet-bot in #17506
• [main] Update dependencies from dotnet/arcade by @dotnet-maestro in #17511
• [main] Update dependencies from dotnet/arcade by @dotnet-maestro in #17515
• Enable F# 9.0 by @KevinRansom in #17500
• Reduce allocations in some Array.Parallel funcs by @brianrourkeboll in #17505
• Fix missing message with type error (FS0001) by @edgarfgp in #17516
• function implicit conversion the same way as fun x by @edgarfgp in #17487
• Nullness :: Render C# code analysis attributes in tooltips by @T-Gro in #17485
• Merge main to release/dev17.12 by @dotnet-bot in #17520
• Allow access modifiers to auto properties getters and setters by @ijklam in #16861
• Nullable<'T>.Value → Nullable<'T>.GetValueOrDefault by @brianrourkeboll in #17504
• Update DEVGUIDE.md by @smoothdeveloper in #16197
• Change the conflicted error number of Access-modifies-to-auto-properties by @ijklam in #17522
• Merge main to release/dev17.12 by @dotnet-bot in #17523
• Better error reporting for unions duplicated fields by @edgarfgp in #17521
• Merge main to release/dev17.12 by @dotnet-bot in #17525
• [RFC FS-1060] Nullness checking (applied to codebase) by @dsyme in #15310
• [main] Update dependencies from dotnet/source-build-reference-packages by @dotnet-maestro in #17526
• Merge main to release/dev17.12 by @dotnet-bot in #17533
• VS plugin Bugfix :: Defensive checks added to prevent TaskListService crashes by @T-Gro in #17411
• Nullness - SDK prop alignment with C# - <N...

.NET 9.0.0

Release

What's Changed

• Requires tactics approval - Fix17773 - cherry pick optimized equals bug fixes to 8.0.4* by @KevinRansom in #17783
• Switch to new VMR control set (#17703) (port from main) by @mmitche in #17788
• [release/dev17.12] Respect generic arity in method uniqueness by @github-actions in #17805
• [17.12] Turn off realsig when building product and proto by @vzarytovskii in #17808
• Merge release/dev17.11 to release/dev17.12 by @dotnet-bot in #17784
• Revert PR - Make the interaction between #line and #nowarn directives consistent by @KevinRansom in #17859
• Tactics approval Required: cherry pick -- compile order changes by @KevinRansom in #17907

Full Changelog: v12.9.100-beta.24466.6...v12.9.100-beta.24522.2

.NET 9.0 RC 2

Release

.NET 9.0 RC 1

Release

.NET 9.0 Preview 7

Release

.NET 9.0 Preview 6

Release

.NET 9 Preview 5

Release