.NET 10.0 Preview 6

Release

What's Changed

• Reapply "Create a single copy of stub templates by @davidwrighton in #115749
• Correct XML doc of Volatile.WriteBarrier() by @tfenise in #115803
• JIT: Don't clone or unroll cold loops by @amanasifkhalid in #115744
• Do not shortcut CompilerComparer by @MichalStrehovsky in #115807
• [LoongArch64] Fix the pointer load in asmhelper.S:ThisPtrRetBufPrecodeWorker with PR#112548. by @LuckyXu-HF in #115814
• JIT: Fix handling for SIMD types in async transformation by @jakobbotsch in #115652
• JIT: Spill value before byref address in stsfld by @jakobbotsch in #115772
• [browser] don't set js_handle for js prototypes by @pavelsavara in #115773
• Don't include LICENSE.TXT in nuget packages by @ViktorHofer in #115518
• JIT: Remove early fgOptimizeBranch pass by @amanasifkhalid in #115734
• Update area owners by @VSadov in #115751
• Move FLS init before EventPipeAdapter::FinishInitialize and the first SetupThread() by @VSadov in #115546
• JIT: arrays are now not always TYP_REF by @AndyAyersMS in #115801
• JIT: another bit of refactoring in escape analysis by @AndyAyersMS in #115812
• Bump main to .NET 10 Preview 6 by @jozkee in #115808
• Add a helper utility to clear the environment variables for tests by @AndyAyersMS in #115752
• Implement SVE2 ShiftLeftAndInsert by @snickolls-arm in #115776
• Refactor Sequential/Explicit layout to happen in the same phase where we do Auto layout by @jkoritzinsky in #113454
• Add targeted regression test for #115442 by @MichalStrehovsky in #115817
• JIT: Don't reverse copied condition in fgOptimizeBranch by @amanasifkhalid in #115842
• Update Linux versions in build pipeline by @richlander in #115784
• [Android] Run CoreCLR library tests on Android by @kotlarmilos in #114148
• Allow using flat layout for component assemblies of composite R2R by @elinor-fung in #115631
• Consolidate QueryPerformanceCounter/GetTickCount usages to minipal/time.h by @huoyaoyuan in #115408
• Implement ldtoken in the interpreter by @kg in #115723
• [minipal] Don't assert when writing empty string by @BrzVlad in #115824
• Revert "Pin web assembly server 2025 docker image" by @akoeplinger in #115830
• JIT: Copy BBF_ASYNC_RESUMPTION when splitting edges in LSRA by @jakobbotsch in #115836
• JIT: Fix SysV first/second return register GC info mismatch when generating calls by @jakobbotsch in #115827
• Create copilot-setup-steps.yml by @CarnaViire in #115834
• Decrease number of allocations in new test by @jakobbotsch in #115887
• [browser] Remove rest of StartupMemoryCache by @Copilot in #115878
• JIT: also check gc-ness of layout for GT_BLK during escape analysis by @AndyAyersMS in #115844
• JIT: update layout of BLK nodes during escape analysis by @AndyAyersMS in #115845
• Use new TypeName methods in runtime tools by @Copilot in #115857
• Fix build break for paltests by @huoyaoyuan in #115877
• Add long/ulong->float cast helpers by @saucecontrol in #114597
• Convert sln to slnx by @kasperk81 in #115818
• Intrinsic support for transient codegen. by @AaronRobinsonMSFT in #115639
• Remove always searching executable directory for native libraries in single-file applications by @elinor-fung in #115236
• Implement SVE2 BitwiseSelect, BitwiseSelectLeftInverted, BitwiseSelectRightInverted by @snickolls-arm in #115775
• [browser] EP profiler - identify top frame, positive PID by @pavelsavara in #115825
• Implement CEE_LDOBJ and CEE_STOBJ in the interpreter by @kg in #115900
• Update WebAssembly image to Ubuntu 24.04 by @richlander in #115901
• Debugger fixes for the Windows X86 EH Funclets model by @davidwrighton in #115630
• JIT: Unprotect handler entry after finally removal by @amanasifkhalid in #115907
• [crossgen2] Prevent inlining of PInvoke marshalling accross version bubbles by @jkotas in #115277
• JIT: Remove overzealous async assert by @jakobbotsch in #115883
• JIT: Avoid implicit byref retbufs in async calls by @jakobbotsch in #115888
• Use sln format for coreclr and corehost by @ViktorHofer in #115935
• Make HttpStress fail on unobserved exceptions by @antonfirsov in #115849
• Add dotnet to the path for copilot agent by @ericstj in #115912
• When cloning method descs be careful with fields that have different offsets between the source and destination. by @VSadov in #115798
• [NativeAOT] Fix: Prevent EETypeKindMask invalidation from uint16_t cast by @TickThunder in #115925
• x86/funclets: Handle longjmp by @filipnavara in #115932
• Add missing null check for SlhDsa's constructor by @vcsjones in #115944
• Simplify findvcvarsall.bat by @jkotas in #115951
• Added an override for IsCollectible in RuntimeType to fix inconsistency between Mono and CoreCLR by @Venkad000 in #115785
• Disable Android tests in default CI set for now by @jkotas in #115956
• JIT: Disallow forward substitution of async calls by @jakobbotsch in #115936
• Disable Android tests in default CI set for now by @jkotas in #115973
• [wasm] Bump chrome for testing - linux: 136.0.7103.113, windows: 137.0.7151.41 by @github-actions[bot] in #115969
• Fix Creating Undermined Culture by @tarekgh in #115919
• Fix intermittent failures in PAL tests by @jkotas in #115958
• Support out of proc Histogram Base 2 Exponential aggregation by @tarekgh in #115852
• Enable new exception handling on win-x86 by @filipnavara in #115957
• Rename collectPerfCounters to collectMetrics in browser runtime by @Copilot in #115926
• [wasm coreclr] Make clr.runtime+libs build on Windows by @radekdoulik in #115058
• Delete FEATURE_DOUBLE_ALIGNMENT_HINT for GC heap allocations by @jkotas in #115985
• add HttpMethod.Query by @WeihanLi in #115934
• [RuntimeAsync] ilasm/ildasm support for the MethodImpl.Async (Take 2) by @hez2010 in #115658
• Create copilot-instructions.md by @CarnaViire in #115917
• Cleanup some PAL items by @AaronRobinsonMSFT in #115986
• Added another case in the switch block to handle the object returned by Mono which differs from the object returned by CoreCLR by @Venkad000 in #115885
• [wasm][coreclr] Interpret everything on wasm by @radekdoulik in #115788
• Remove bounds check for arr1[arr2.Length] pattern by @EgorBo in #115980
• Add a copilot prompt file for JIT-EE interface modifications by @EgorBo in #115889
• Move GenTreeIntCon::gtCompileTimeHandle field to be a global map by @EgorBo in #115542
• Skip static fields in FieldLayoutIntervalCalculator by @MichalStrehovsky in #115987
• Replace use of DAMT.All in ComponentModel with a more restricted set by @MichalStrehovsky in #114126
• Enable AVX2 optimistically with AVX on NAOT by @saucecontrol in #114575
• Fix conditions mismatch for gc-sections with lld by @illnyang in #115964
• Fix cmake warning by @radekdoulik in #116000
• JIT: Don't allow broadcast lowering to remove cast from decomposed long by @saucecontrol in #116002
• [RISC-V] Optimize comparisons by @tomeksowi in #115039
• Fixup how xarch instructions check for embedded broadcast and masking support by @tannergooding in #115704
• JIT: Always intersect exception sets of defs by @jakobbotsch in #116007
• fix json source generator serialize when writing by @WeihanLi in #116004
• Replace ATP pattern with async/await in SmtpClient (part 2) by @rzikm in #115722
• Switch away from AzureLinux host docker testing temporarily by @jakobbotsch in #115993
• Switch to ymm after zmm in genZeroInitFrameUsingBlockInit by @EgorBo in #115981
• Replace CORCOMPILE_FIXUP_BLOB_KIND with ReadyToRunFixupKind by @Copilot in #115854
• Notify attached debugger of NAOT exception by @agocke in #115678
• Unmasking EGPRs in register allocator by @khushal1996 in #114867
• Fix implementation of IFindReferenceTargetsCallback::FoundTrackerTarget by @jkoritzinsky in #115921
• Rename conflicting test assemblies by @filipnavara in #116038
• Mark some Tensor extension methods as scoped by @michaelgsharp in #115575
• [Mono] Fix wait's returning false on non-runtime queued user APC's. by @lateralusX in #116001
• Ordered evaluation in FileSystemGlobbing Matcher by @PranavSenthilnathan in #115940
• Remove dead code in R2RPEBuilder by @elinor-fung in #115953
• Fix dataflow annotations on TypeExtensions by @MichalStrehovsky in #116008
• JIT: Add a gtFindNodeInTree helper by @jakobbotsch in #115975
• JIT: Allow forward subbing no-return calls by @jakobbotsch in #115976
• JIT: Refactor CSE candidate storage slightly by @jakobbotsch in #116009
• [RISC-V][LoongArch64] Handle reversed fields in lowered structs by @tomeksowi in #115933
• [browser][WBT] EventPipe - end to end test by @pavelsavara in #115945
• Update zlib-ng to 2.2.4 by @ericstj in #116044
• JIT: Support bitwise field insertions for call arguments by @jakobbotsch in #115977
• JIT: Copy loop memory dependence recursively on hoisting by @jakobbotsch in #116068
• Trust single-edge synthetic profile by @EgorBo in #116054
• Add Sve.IsSupported check in test by @kunalspathak in #116026
• Fix typo in RecognizerBase: invalid variable in condition by @MaxPatri in #115902
• System.Formats.Tar: default to no ctime/atime. by @tmds in #115778
• [APX] Fix wrong APX-NF flag on instruction table by @Ruihan-Yin in #116047
• Fix the incorrect code comment in DetermineCreateObjectDelegate by @Silencersn in #115038
• Don't try to set RPATH on Windows by @MichalStrehovsky in #116063
• Delete non-existing pal tests from list by @am11 in #116048
• [S.T.J] Removed unused field in JsonProperty by @dannyd89 in #114071
• Reduce string interpolation overhead by @pentp in #114497
• Attempt to fix the rare stack overflow tests issue by @janvorli in #116076
• Convert genRuntimeEventSources to a C# source generator by @jkoritzinsky in #114810
• Check Avx512BW.IsSupported in BitArray.CopyTo() by @tfenise in #114818
• Add breaking change rule for adding partial modifier to interface methods by @jjonescz in #114537
• Remove redundant nullable annotation by @xtqqczze in #113550
• Fix MaxWorkingSet_GetNotStarted_ThrowsInvalidOperationException by @gwr in #105424
• Skip adding NullChangeToken instances to the composite list by @rameel in #115684
• Pin build container SHAs by @richlander in #116083
• [Android] Re-enable native symbol stripping in the release build of the sample app by @kotlarmilos in #116061
• Implement IEnumerator on ref struct enumerators by @AlexRadch in #106309
• Provide more info on the failing CustomAttributeProvider by @jtschuster in #110230
• Improve the performance of CollectionExtensions.InsertRange by reducing 1 array copy by @karakasa in #107683
• Update copilot-instructions.md by @CarnaViire in #116049
• JIT: fix retyping of BLK ops when parent local is retyped by @AndyAyersMS in #116027
• arm64: Rename SVE Prefetch APIs names to use Bit by @jonathandavies-arm in #115609
• Remove ILLink support for field init substitutions by @sbomer in #107380
• Replace Win32 PAL implementation with minipal implementation by @AaronRobinsonMSFT in #115858
• Create an on-stack instance of FindReferenceTargetsCallback. by @AaronRobinsonMSFT in #116081
• Delete anonymous type heuristic by @MichalStrehovsky in #116092
• Fix SmtpClientTest zero timeout hang by @rzikm in #116062
• [RuntimeAsync] Disable building async tests on configurations that are not yet supported. by @VSadov in #116084
• remove dead resources from mscorrc.rc by @danmoseley in #116121
• Delete FEATURE_MULTIREG_RETURN by @jkotas in #116122
• [RuntimeAsync] Do not fail EnC on ordinary Task-returning methods when async feature is turned on. by @VSadov in #115954
• Fix SmtpClientTest.SendAsync_CanBeCanceled_SendAsyncCancel test failure by @Copilot in #116042
• JIT: Fix possible heap corruption in outlined composite SSA storage by @jakobbotsch in #116071
• [mono][interp] Fix broken code attempting to reapply superinstruction optimization by @BrzVlad in #116069
• Fix interpreter double and 64 bit constant processing by @janvorli in #116115
• Increase timeouts for native AOT legs by @MichalStrehovsky in #116114
• Distinguish OOM and failure to reprotect in thunks APIs by @MichalStrehovsky in #116010
• [Performance] Add static linking build for CoreCLR Android by @kotlarmilos in #116093
• Revert "Pin build container SHAs" by @richlander in #116116
• disable newly added threading test. by @mangod9 in #116106
• Record exception in HttpClient native instrumentation by @joegoldman2 in #115959
• Remove redundant bounds checks around arr[arr.Length - cns] pattern by @EgorBo in #116105
• Remove bounds checks for Log2 function in FormattingHelpers.CountDigits by @EgorBo in #113790
• Replace readdir_r call in TimeZoneInfo.Unix by @jozkee in #116119
• JIT: generalize escape analysis delegate invoke expansion slightly by @AndyAyersMS in #116099
• JIT: Use flowgraph annotations to scale loop blocks in optSetBlockWeights by @amanasifkhalid in #116120
• JIT: improve codegen for inline candidates called only for effect by @AndyAyersMS in #116123
• Delete LOADEDMODULES cache by @jkotas in #116126
• stop using System.CommandLine types that won't be public anymore by @adamsitnik in #116065
• Remove a few instances of unsafe code by @EgorBo in #116111
• Rework how EVEX+AVX512+AVX10 are supported by the JIT to greatly simplify things by @tannergooding in #115983
• Follow up on recent PAL cleanups by @jkotas in #116127
• make copilot setup run on 8 cores not 2 by @danmoseley in #116169
• Add dispose of X509Chain in SignedXml by @MaxPatri in #115909
• Implement IUtf8SpanParsable on Char and Rune by @lilinus in #105773
• Fix PipeStream leak on Windows when pipe is disposed with a pending operation by @stephentoub in #115453
• Implement IUtf8SpanParsable on Guid by @SirCxyrtyx in #105654
• JIT: revisions to struct field escape analysis by @AndyAyersMS in #116124
• Do not use StabilizePackageVersion in project infra by @mmitche in #116152
• replace redhawk mentions by @kasperk81 in #116177
• CleanUp GetFileAttribute(Ex) in PAL by @huoyaoyuan in #116096
• JIT: Refactor around impDevirtualizeCall for GVM devirt by @hez2010 in #112610
• [mono][interp] Remove invalid addition of conversion opcodes by @BrzVlad in #116130
• [mono][interp] Disable inlining of methods that call methods using StackCrawlMark by @BrzVlad in #116134
• [wasm] Bump chrome for testing - linux: 137.0.7151.55, windows: 137.0.7151.56 by @github-actions[bot] in #116186
• Switch to using non-arch specific runtime properties by @mmitche in #116155
• [main] Update dependencies from dnceng/internal/dotnet-optimization by @dotnet-maestro[bot] in #115464
• JIT: Handle return buffer definitions in TreeLifeUpdater by @jakobbotsch in #116137
• Fix invalid continuation caused by exception after inlining in TryRunInline by @kotlarmilos in #115659
• Remove redundant unsafe context by @EgorBo in #116187
• Remove canceled AsyncOperations from channel queues by @stephentoub in #116021
• Interpreter EH implementation by @janvorli in #116046
• Disable CoreCLR interpreter test for JIT stress by @janvorli in #116219
• Add missing connection strings to EnvironmentVariablesConfigurationProvider by @tarekgh in #116037
• Implement SVE2 Xor, XorRotateRight by @snickolls-arm in #115891
• Fix parsing of json with UTF 8 BOM in the host by @vitek-karas in #115967
• Reduce allocations in PollingWildCardChangeToken by @pentp in #116175
• Unify the JsonDocument and Utf8JsonReader handling of DateTime/Offset by @IDisposable in #113929
• Use span copy in BigInteger.TryGetBytes when applicable by @Rob-Hague in #115445
• Support bounded channel with bound of 0 (rendezvous) by @stephentoub in #116097
• JIT: Consistently use TypeIs/OperIs for type/oper checks by @jakobbotsch in #116141
• Notify debuggers on rethrown exceptions by @MichalStrehovsky in #116246
• Generalize check for dynamic scopes when saving EH clauses by @jakobbotsch in #116217
• JIT: Avoid VN-based removal of dead byref store in async funcs by @jakobbotsch in #116136
• Enable Unsafe.Bitcast for Nullable by @jkotas in #116232
• Enable exceptions on wrong LDELEM arguments by @janvorli in #116235
• Fix floating point <-> integer conversions by @janvorli in #116236
• Implement empty string intrinsic in interpreter by @janvorli in #116237
• Fix LDTOKEN in interpreter by @janvorli in #116234
• SVE2 API for AbsoluteDifferenceAdd by @jacob-crawley in #115513
• Replace runtime's 'OutputRID' by the corresponding vmr property 'TargetRid'. by @tmds in #116259
• [wasm] Always respect WasmEnableSIMD when trimming by @lewing in #115313
• Option to disallow duplicate JSON properties by @PranavSenthilnathan in #115856
• JIT: Remove old loop metrics by @amanasifkhalid in #116267
• Share allocation helpers between CoreCLR and NativeAOT by @filipnavara in #115339
• JIT: save pgo data in inline context, use it for call optimization by @AndyAyersMS in #116241
• Add --arch option for --list-runtimes and --list-sdks in host by @elinor-fung in #116078
• Sve/Scatter test: Add Debug.Assert for array length by @kunalspathak in #116158
• JIT: avoid some unnecessary retyping in escape analysis by @AndyAyersMS in #116277
• Replace Unsafe.As with Unsafe.BitCast in SpanHelpers.Fill by @jkotas in #116221
• Cleanup HMF definitions by @am11 in #116085
• Re-revert "Make mutable generic collection interfaces implement read-only collection interfaces (#95830)" by @Sergio0694 in #115802
• x86: Promote varargs when enumerating funclet by @filipnavara in #116228
• X86 GCDecoder RevPInvoke nits by @max-charlamb in #116264
• Remove emitter unit tests which are not supported and add MoveScalar … by @khushal1996 in #115952
• [mono][interp] Add possibility to configure interp options from env var by @BrzVlad in #116215
• [mono][interp] Update var definition when inserting new instructions during cprop by @BrzVlad in #116179
• JIT: Remove PUTARG_SPLIT by @jakobbotsch in #116074
• Remove ProtectByRefsFrame by @filipnavara in #116288
• JIT: Graph-based loop inversion by @amanasifkhalid in #116017
• [Android] Enable library smoke tests on CoreCLR Android by @kotlarmilos in #116091
• Fix PAL tests by @jkotas in #116197
• Check containment for op3 for ternary instruction by @kunalspathak in #116229
• [main] Source code updates from dotnet/dotnet by @dotnet-maestro[bot] in #116145
• JIT: Fix Compiler::printfAlloc for long strings by @jakobbotsch in #116306
• Fix no-argument ./build.sh invocation by @jkoritzinsky in #116315
• Unbounded memory leak from DependencyInjectionEventSource by @pedrobsaila in #115974
• Fix bootstrap paths to include TargetRid for platform-specific directories by @Copilot in #116302
• [browser] rename MSBuild property WasmPerfTracing to EnableDiagnostics by @pavelsavara in #116253
• [NativeAOT] Add sampling profiler by @filipnavara in #108083
• Emit an error message if the runtime fails to initialize, instead of just silently aborting by @JinShil in #116171
• Update coding-style.md by @tonyhallett in #116317
• Use throw stubs in ref assemblies for collection interfaces by @Sergio0694 in #116309
• Enable RhpNewObjectArrayFast optimization on NativeAOT by @filipnavara in #116290
• Improve a few more IList/Collection => IReadOnlyList/Collection checks by @stephentoub in #116313
• Ensure that embedded mask handling is covering the right scenarios by @tannergooding in #116201
• Delete DacVirtualUnwind by @jkotas in #116286
• [RISC-V] Simplifying the loop generated in genZeroInitFrameUsingBlockInit by @sirntar in #116011
• Fix bash array expansion by @akoeplinger in #116321
• Rename Redhawk to NativeAOT by @kasperk81 in #116209
• Remove a few unsafe bits in S.P.Uri, S.N.Ping, System.Transactions.Local by @EgorBo in #116281
• Fix various HTTP header parsing issues by @MihaZupan in #116323
• [RuntimeAsync] Adding a simple test for reflection with async methods. by @VSadov in #116329
• [browser][WBT] fix BlazorEventPipeTestWithMetrics test by @pavelsavara in #116334
• Implement SVE2 ShiftArithmeticRounded, ShiftArithmeticRoundedSaturate, ShiftArithmeticSaturate by @snickolls-arm in #115774
• Improve the interpreter internal diagnostic capabilities by @davidwrighton in #116162
• [cDAC] Implement sign extension for ClrDataAddresses by @max-charlamb in #116222
• Fix PropertyPolicies to consider both getter and setter accessibility by @Copilot in #116080
• Fix crossgen2 sometimes emitting tokens from the wrong module by @kg in #114172
• Update Linux versions in Libraries pipeline by @richlander in #115756
• Convert STORE_BLK into STORIND for SIMD by @EgorBo in #116265
• Enable ML-DSA on Windows by @PranavSenthilnathan in #116291
• Remove dead code from arm/arm64/loongarch64 stub linker by @filipnavara in #116349
• Dispose all resources used in CmsSignature by @PranavSenthilnathan in #115666
• Add StringComparison to ClaimsIdentity by @vcsjones in #116352
• Debug logger should print exceptions even if the formatted message is empty by @colejohnson66 in #116339
• Remove dead code for parsing/emitting X86 instructions by @filipnavara in #116292
• Avoid building JITs for cross tools when unnecessary by @jakobbotsch in #116332
• Fix NativeAOT outer loop test failure by @jkotas in #116362
• Correct sequence point comment by @noahfalk in #116366
• Fix conversion opcode emit for implicit conversion part of conditional branches by @BrzVlad in #116367
• SPMI: Handle BRANCH26 relocs similar to REL32 relocs by @jakobbotsch in #116340
• arm64: Implement missing SVE extract methods by @jonathandavies-arm in #116095
• Implement SVE2 AbsoluteDifferenceWidening(Upper/Lower) by @jacob-crawley in #116268
• Optimize Vector.Max codegen using AVX512 by @alexcovington in #116117
• Trace out error code when creating single-file bundle extraction directory fails by @elinor-fung in #116342
• Make single-file test cases delete extraction directory after test run by @elinor-fung in #116347
• Normalize TYP_STRUCT to TYP_SIMD in impInlineUnboxNullable by @EgorBo in #116372
• JIT: Allow baseline intrinsics in JIT code unconditionally by @saucecontrol in #116196
• Revert change to follow symlinks of dotnet host by @agocke in #115315
• Add JIT/VM support for the approved but NYI xarch isas by @tannergooding in #116230
• Partial revert of "Delete LOADEDMODULES cache", additional cleanup by @jkotas in #116374
• [browser] Remove custom cache by @maraf in #114901
• Use Unsafe.BitCast in System.Array by @xtqqczze in #116404
• Delete SCAN contract annotations by @jkotas in #116182
• Cleanup LowLevelList usage in GCLayout by @huoyaoyuan in #116316
• NativeAOT: Unhijack thread in sampling profiler before starting stack walk by @filipnavara in #116409
• Use Unsafe.BitCast in System.Guid by @xtqqczze in #116415
• Fix trigger for linkable-framework label policy by @jkotas in #116417
• Fix invalid IL in RefFields test - remove ldind.ref on value type references by @Copilot in #116416
• Delete unnecessary or condition by @jkotas in #116418
• Revert removal of embedModuleHandle and embedFieldHandle by @EgorBo in #116036
• Delete always-null unwContext by @am11 in #116397
• Delete extra layers by @jkotas in #116405
• [browser] Fix dev tools profiler by @pavelsavara in #116387
• JIT: fix issue in assertion prop phi inference by @AndyAyersMS in #116326
• remove x86 ICF special handling by @max-charlamb in #116388
• Interpreter shared generics support by @davidwrighton in #116357
• Fix telemetry for redirect + custom ICredentials by @antonfirsov in #115939
• Delete MultilevelSDKLookup test class by @elinor-fung in #116396
• Fix minidump generation - check if IsIL before calling methods related to it by @thaystg in #116391
• [clr-interp] Implement array support for reference and value types by @kotlarmilos in #116384
• PreHash SLH-DSA by @PranavSenthilnathan in #115509
• Adjust area owners for diagnostics and type system by @steveisok in #116443
• JIT/AOT to interpreter calls support by @janvorli in #116353
• Fix struct ReturnKind on SysV AMD64. by @zengandrew in #116194
• Implement CONV_OVF_xxx in the Interpreter by @kg in #116356
• [infra][Apple] Fix Apple mobile runtime test reporting by @matouskozak in #114862
• JIT: Fix dumping of empty exception set during CSE by @jakobbotsch in #116472
• Add JsonElement.Parse by @stephentoub in #116363
• Remove ArrLen propagation from earlyprop by @EgorBo in #116410
• Fix rangecheck bug: GT_LSH may actually overflow the index by @EgorBo in #116470
• JIT: Fix tailcall rehoming logic for some interfering operands by @jakobbotsch in #116468
• Record OperationCanceledException in HttpClient native instrumentation by @joegoldman2 in #116269
• Use UnsafeAccessorType in System.Private.CoreLib and the BCL by @jkoritzinsky in #115583
• Fix ILLink check for function pointer equality by @sbomer in #116435
• Fix stresslog facility and log level mix-up. by @lateralusX in #116467
• arm64: Rename ConditionalExtract arguments by @jonathandavies-arm in #116216
• arm64: Rename CreateBreak/CreateMask args by @jonathandavies-arm in #116255
• Additional cleanup and simplification of hwintrinsic instruction sets for xarch by @tannergooding in #116406
• SPMI: Run 64-bit diffs on OSX.14.Arm64.Open by @jakobbotsch in #116299
• Fix BulkType event for GC static bases by @MichalStrehovsky in #116479
• Revert "Make mutable generic collection interfaces implement read-only collection interfaces" and related changes by @tannergooding in #116497
• ML-DSA+COSE by @krwq in #115158
• Revert "Switch away from AzureLinux host docker testing temporarily (#115993)" by @jakobbotsch in #116501
• Fix reporting of foreign native exception not handled by runtime by @janvorli in #115750
• JIT: Ensure profile synthesis converges for trivial cases by @amanasifkhalid in #116502
• Remove more bounds checks for switch by ignoring dont-cse flag for checked bounds by @EgorBo in #116506
• Make BackgroundService run ExecuteAsync as task by @ericstj in #116283
• Remove unused double -> int/uint cast helpers by @saucecontrol in #116484
• Disable certain stackoverflow tests by @kunalspathak in #116535
• Drop support for OpenSSL primitives on macOS by @vcsjones in #116481
• Add Strict JsonSerializerOptions by @PranavSenthilnathan in #116271
• Include symbols in sfx transport packs by @ViktorHofer in #116346
• Sign macOS binaries that aren't signed by @akoeplinger in #116476
• Exclude tail call counts from check to prevent unnecessary EBP frame by @filipnavara in #116413
• Correct some comments in Avx*.cs by @tfenise in #115056
• Harden Ping_TimedOut_* tests by @antonfirsov in #116500
• Map version for Tahoe compatibility. by @vcsjones in #116536
• Fix libhost scenarios (COM, C++/CLI, custom component host) incorrect coreclr path determination by @elinor-fung in #116504
• Do not run SVE when HWIntrinsic is OFF by @kunalspathak in #116441
• ML-KEM: Windows ephemeral implementation by @vcsjones in #116440
• Deliver Posix signals in reverse order of their registration by @jkotas in #116557
• Delete unused functions in eventtrace by @elinor-fung in #116565
• [Android] Install brotli static libraries in CoreCLR Android pack by @kotlarmilos in #116529
• Fix bug in interpreter finally call islands generation by @janvorli in #116560
• Arm64 SVE: Do not remove embedded conditional selects by @a74nh in #116144
• ML-DSA Certificates on Windows (NCrypt support) by @PranavSenthilnathan in #116394
• Tag dotnet/jit-contrib for JIT related changes by @jkotas in #116589
• Fix build to use new method name by @vcsjones in #116591
• Limit JIT-EE GUID notifications to PR opened event by @jkotas in #116605
• Implementation of ldftn and calli by @davidwrighton in #116449
• Updated PCA of DAC cert by @hoyosjs in #116507
• Refactor MachObjectFile signature blobs by @jtschuster in #116566
• Fix a couple error cases in Json parsing by @BrennanConroy in #116446
• Add support for the Avx512 Compress/Expand intrinsics by @tannergooding in #116567
• Revert partial changes for thread_local convergence. by @AaronRobinsonMSFT in #116512
• Revert "Fix reporting of foreign native exception not handled by runt… by @tommcdon in #116621
• [clr-interp] Emit INTOP_NEWMDARR only for array ctor by @kotlarmilos in #116544
• Add option to disable particular TLS signature algorithms by @rzikm in #114741
• [main] Source code updates from dotnet/dotnet by @dotnet-maestro[bot] in #116583
• Add ability to filter interpreted methods by assembly by @janvorli in #116569
• Copy integer registers on AMD64 architecture for debugger stackwalking by @tommcdon in #116617
• arm64: Add InterleavingXorEvenOdd & InterleavingXorOddEven by @jonathandavies-arm in #116525
• Partial revert of #111408 by @tommcdon in #116618
• Add deduplication info to OneFuzz fuzzing crash work items by @MihaZupan in #116615
• [browser] Bundler friendly output by @maraf in #116300
• RangeCheck: Don't create invalid ranges by @EgorBo in #113935
• [main] Update dependencies from dotnet/hotreload-utils, dotnet/icu, dotnet/runtime-assets by @dotnet-maestro[bot] in #115709
• SignedCms add tests and reduce allocations by @PranavSenthilnathan in #116400
• getHelperFtn support for getting CORINFO_METHOD_HANDLE by @davidwrighton in #116603
• SLH-DSA cleanup comments, SPKI formatting and tests by @PranavSenthilnathan in #116452
• ML-DSA: Add BCrypt support in Microsoft.Bcl.Cryptography by @PranavSenthilnathan in #116616
• JIT: Exclude BB_UNITY_WEIGHT scaling from BasicBlock::isBBWeightCold by @amanasifkhalid in #116548
• Don't allow inlining the NativeAOT-only unsafe accessor by @jkoritzinsky in #116646
• Remove "Host Breakable" lock concept by @jkoritzinsky in #116611
• BypassReadyToRun when initializing ProbabilisticMap by @MihaZupan in #115811
• Improve handling of dynamic types in BulkType events by @MichalStrehovsky in #116629
• Add {Async}Enumerable.{Infinite}Sequence by @stephentoub in #116538
• Remove the code pitching feature. by @AaronRobinsonMSFT in #116662
• JIT: Move loop inversion to after loop recognition by @amanasifkhalid in #115850
• Tensor select. Iteration along dimensions by @michaelgsharp in #113697
• Fix exception message for InvalidCastException thrown by unboxing by @jkotas in #116672
• Include the frame register when copying arm32 debugger stackwalk context by @tommcdon in #116663
• Skip SSL key log test for OpenSSL 3.5+ by @rokonec in #116474
• Change HttpClient/SslStream default certificate revocation check mode to Online by @rzikm in #116098
• Fix typo in System.Net.Security Strings.resx by @akoeplinger in #116673
• Add option to run coreclr tests using interpreter by @janvorli in #116570
• Avoid CORINFO_..._HANDLEs in JIT helper signatures by @jkotas in #116675
• Generate module rundown events by @MichalStrehovsky in #116338
• Document important nuances about Dictionary/HashSet by @kg in #112760
• Fix EmitCall in the interpreter compiler by @janvorli in #116654
• Add System.Formats.Cbor to the ASP.NET Core transport package by @MackinnonBuck in #116602
• Remove readdir_r entirely and handle filenames > 255 bytes by @jozkee in #116639
• Enable multi-dim array interpreter test by @kg in #115916
• [browser] Update wasmbrowser template by @maraf in #116690
• Fix absolute path check when loading hostfxr/hostpolicy/coreclr by @elinor-fung in #116597
• Fix stackwalk from interpreted EH funclet by @janvorli in #116640
• Fix caught foreign native exception handling take 2 by @janvorli in #116693
• Fix nullable annotations on MLKemAlgorithm and add ToString by @vcsjones in #116635
• Improve exceptions thrown by MLKem when key types aren't available. by @vcsjones in #116590
• Implement interpreter CEE_ADD_OVF and CEE_SUB_OVF opcodes by @janvorli in #116694
• Update host test command execution logging: include PID on exit, remove confusing OK/FAIL, add caller name by @elinor-fung in #116658
• Remove debugreturn.h and machinery around preventing returns by @jkoritzinsky in #116563
• DriveInfo.Linux: use procfs mountinfo for formats and mount point paths. by @tmds in #116102
• [release/10.0-preview6] Record struct packing even when falling back to auto layout by @github-actions[bot] in #116770
• [release/10.0-preview6] Fix HttpClientHandler.CreateNativeHandler implementation by @github-actions[bot] in #116767
• [release/10.0-preview6] JSON: Don't mark unmapped properties as read by @github-actions[bot] in #116828
• [10.0-preview6] Revert "Trust single-edge synthetic profile (#116054)" by @AndyAyersMS in #117403

New Contributors

• @illnyang made their first contribution in #115964
• @Silencersn made their first contribution in #115038
• @dannyd89 made their first contribution in #114071
• @jjonescz made their first contribution in #114537
• @SirCxyrtyx made their first contribution in #105654
• @JinShil made their first contribution in #116171
• @tonyhallett made their first contribution in #116317
• @colejohnson66 made their first contribution in #116339
• @zengandrew made their first contribution in #116194

Full Changelog: v10.0.0-preview.5.25277.114...v10.0.0-preview.6.25358.103