[main] Source code updates from dotnet/runtime

[dotnet-maestro]

Note

This is a codeflow update. It may contain both source code changes from
the source repo
as well as dependency updates. Learn more here.

This pull request brings the following source code changes

From https://github.com/dotnet/runtime

• Subscription: 6458ae35-db00-43d0-af59-e57a01ca3120
• Build: 20260114.1 (297233)
• Date Produced: January 14, 2026 8:48:37 AM UTC
• Commit: 73294ebb8c1bf4724e8c785e599e5ac71e06bec3
• Commit Diff: 891c183...73294eb
• Branch: main

Diff the source with this PR branch

darc vmr diff --name-only https://github.com/dotnet/runtime:73294ebb8c1bf4724e8c785e599e5ac71e06bec3..https://github.com/dotnet/dotnet:darc-main-4c1b180b-4136-4bf2-a4e1-6dd83f19b5d9

[dotnet-maestro]

Caution

🚨 Action Required — Conflict detected

A conflict was detected when trying to update this PR with changes from build 297233 of https://github.com/dotnet/runtime/tree/73294ebb8c1bf4724e8c785e599e5ac71e06bec3.

The conflicts in the following files need to be manually resolved:

• src/tasks/installer.tasks/installer.tasks.csproj
  🔍 View file in dotnet/runtime vs VMR

ℹ️ To resolve the conflicts, please follow these steps:

1. Clone the current repository

   git clone https://github.com/dotnet/dotnet
   cd dotnet

2. Make sure your darc is up-to-date
   (version 1.1.0-beta.26062.6 or higher)

   # Linux / MacOS
   ./eng/common/darc-init.sh
   # or on Windows
   .\eng\common\darc-init.ps1

3. Run from repo's git clone and follow the instructions provided by the command to resolve the conflict locally

   darc vmr resolve-conflict --subscription 6458ae35-db00-43d0-af59-e57a01ca3120

   This should apply the build 297233 with sources from 73294eb
4. Commit & push the changes
5. Once pushed, the Codeflow verification check will turn green.
   If not, a new build might have flown into the PR and you might need to run the command above again.

💡 You may consult the FAQ for more information or tag @dotnet/prodconsvcs for assistance.

[dotnet-maestro]

Note

PRs from original repository included in this codeflow update:

• Add a script to generate code coverage reports after fuzzing runtime#123079
• Fix documentation for ReadOnlySequence.GetOffset runtime#116524
• Haiku: Add native library IO support runtime#114521
• Refactor process.cpp to eliminate vector dependency and shutdown race conditions runtime#123074
• Don't hold the wait subsystem lock when acquiring the shared memory process-level lock runtime#123162
• [clr-interp] Fix debugger issues in interpreter runtime#123047
• Fix InstructionSetDesc.txt to only put managed names for ISAs with managed names runtime#123148
• Add Uri.UriSchemeData constant runtime#123147
• Generate calls to interface methods through resolve helper runtime#122639
• [main] Source code updates from dotnet/dotnet runtime#123100
• Fix up hijacking on arm32 (preserve async continuation register) runtime#123057
• Implement support for ExtendedLayoutKind.CUnion runtime#123052
• [clr-interp] Async Resume stubs are exclusive to the JIT as they use a set of intrinsics that are JIT specific runtime#123046
• Add null validation for relativeUri in Uri(Uri, Uri) constructor runtime#123134
• Fix GetFileAccessFromRights bitwise logic for compound FileSystemRights flags runtime#122406
• [RyuJit/WASM] Add stackification algorithm skeleton runtime#123099
• Update to draft 14 of Composite ML-DSA runtime#123106
• Optimize more bound checks around logical operators runtime#122263
• Handle OpenSSL config errors gracefully in DetectCiphersuiteConfiguration runtime#122569
• Fix JsonNode.GetPath() to properly escape characters in property names runtime#122841
• JIT: Fix build after two conflicting changes runtime#123128
• Fix impGetNodeAddr flag handling for volatile, unaligned, and initclass accesses runtime#122381
• Fix CharSearchValuesPolyfill._ascii array size from 8 to 4 elements runtime#122668
• JIT: Devirtualize non-shared generic virtual methods runtime#122023
• Fix JsonSerializer.Serialize producing invalid JSON for [JsonExtensionData] with JsonObject runtime#122838
• [main] Update dependencies from dotnet/xharness runtime#122698
• fix ntlm tests on platforms with broken gssapi runtime#123055
• Fix KeyValuePair nullability detection on Mono runtime#120910
• Fix Regex.Escape to not escape vertical tab and add comprehensive tests runtime#123088
• [Bounds checks] Merge inter-block assertions in RangeCheck::MergeAssertion runtime#121527
• Use System.Runtime.InteropServices.Marshalling.ComVariant instead of custom VARIANT types in libraries runtime#123060
• Add X509Certificate2PemTests to CredScanSuppressions runtime#123108
• Remove all current uses of PInvokeArgIterator and the flow of native stack arg sizes through our data structures where possible runtime#123016
• [browser][coreCLR] enable System.Runtime.Tests on CI as Release build runtime#122980
• Split NativeAOT tests to use separate merged runners runtime#120949
• Remove unused SORT_MARK_STACK code. runtime#123063
• Only root supported hwintrinsic methods for interpreter-based platforms runtime#123043
• Simplify Enum.Equals/GetHashCode optimization runtime#123086
• Add ZipArchiveEntry.Open(FileAccess) and OpenAsync(FileAccess, CancellationToken) overloads to ZipArchiveEntry runtime#122032
• Fix StackOverflowException serializing dictionary with string key and object-converter that handles string runtime#122835
• Split non-ASCII Uri normalization out of ParseRemaining and avoid temporary allocations runtime#122038
• Optimize HashSet.UnionWith to copy data from another HashSet when empty runtime#122952
• Update comment to use Ascii.IsValid in KeyAnalyzer runtime#122715
• Fix missing Dispose override in SizeOptIListSelectIterator and SizeOptIListWhereIterator runtime#122729
• Fix another Uri debug assert runtime#123075
• Don't overwrite the prebuilt usage tracking file for the bootstrap build runtime#123014
• Fix System.Timers.Timer Stop() not working after setting AutoReset or Interval on disabled one-shot timer runtime#122843
• Improve code coverage for System.Security.Cryptography.Xml runtime#120640
• [main] Update dependencies from dotnet/runtime-assets runtime#123061
• Restructure copilot-instructions.md to emphasize mandatory baseline build runtime#123067
• Intrinsify Enum.Equals to avoid boxing runtime#122779
• Defer DOTNET_DbgEnableMiniDump error message until dump creation runtime#122986
• Fix edge-case Uri debug assert failure runtime#123054
• Remove GetFullName(DefType) extension method and replace usage runtime#123001
• Keep proxy type map entries that could be created dynamically runtime#123031
• Fix DateTime parsing when AM designator prefix PM designator runtime#123024
• [Wasm RyuJIT] Add missing TYP_REF check runtime#123019
• [main] Update dependencies from dotnet/hotreload-utils, dotnet/icu, dotnet/runtime-assets runtime#122734
• skip timeout ping tests if test targets are unreachable runtime#122987
• Mark async CapacityTests as GC stress incompatible runtime#123032
• Update DumpHeaders to take params span instead of params array runtime#123034
• Convert [GeneratedRegex] from method to property syntax runtime#122407
• Show only a single suggestion adornment for multi-line regex patterns runtime#122601
• JIT: Mark non-internal block as imported runtime#122967
• JIT: Fix GC info for fast tailcalls with contained targets runtime#122924
• Update iOS and tvOS device queues to OSX 15 runtime#122702
• [wasm][coreclr] Fix struct layout runtime#122704
• Fix detection of System.Net.Security.Native runtime#123003
• Tweak Copilot Coding Agent setup runtime#123025
• [clr-interp] Fix EH logic edge case runtime#122993
• [Wasm RyuJIT] Add some missing types to ins_Load and ins_Store runtime#122994
• arm64: Refactor GenerateHWIntrinsicTests_Arm.cs runtime#121584
• Reduce the number of sections in R2R PE files runtime#122511
• Include host symbols in testhost folder runtime#122999
• Fix method signature for memmove and memset in SpanHelpers.ByteMemOps runtime#123006
• [clr-interp] Fix timing of UnhandleException handlers runtime#122992
• [RyuJIT Wasm] Disable genCreateAddrMode on Wasm runtime#122897
• [wasm][coreclr] Do not try to probe .ni.dll assemblies runtime#122643
• Do not ship EventSourceGenerator runtime#123000
• [RISC-V] Enable constant CSE in RISCV64 runtime#121739
• [wasm][coreclr] Disable remaining madvise calls on wasm runtime#122920
• [browser][coreCLR] asset loading improvements runtime#122886
• Add a few EntityRegistry features in managed ilasm runtime#122957
• [clr-interp] Tracing fixes.  runtime#122467
• Fix integer overflow in BufferedStream.WriteToUnderlyingStreamAsync for large buffers runtime#122944
• [clr-interp] Fix EmptyThisCall test runtime#122936
• Various async fixes runtime#122948
• Remove NET9_0_OR_GREATER and NET10_0_OR_GREATER preprocessor constants runtime#122953
• Inline nullable allocators runtime#122167
• JIT: fix CEA to handle a few more cases runtime#122946
• [mono] [debugger] Fix string[][] runtime#122935
• Handle some additional floating-point and SIMD morph optimizations runtime#122368
• Fix interpreter ResumeAfterCatch on arm64 Unix runtime#122504
• Reduce overhead from using AutomaticDecompression runtime#122676
• JIT: Expand recognition of struct field offset pattern runtime#122297
• [HTTP] Stress fix for ASAN preload runtime#122926
• Remove PlatformDetection.IsWindows7 and IsNotWindows7 properties runtime#122907
• Remove explicit WinRT initialization/uninitialization runtime#122940
• Add diagnostics, escapes, and typedefs to C# ilasm runtime#122930
• Remove inconsistent UnmanagedCallersOnly delegate construction check runtime#122906
• Remove com.apple.security.cs.debugger entitlement from dotnet muxer and apphosts runtime#122901
• Cleanup Win7 and earlier compatibility from CoreCLR runtime#122884
• [clr-interp] Fix some interop suite issues runtime#122656
• Fix browser build runtime#122927
• Add JsonSerializerDefaults.Strict support to JsonSourceGenerationOptionsAttribute constructor runtime#122899
• Remove non-deterministic Image base comment from ildasm output runtime#122913
• Fix UnsafeAccessor signature for byref struct this runtime#122754
• [browser][coreCLR] inline dotnetAssert.fastCheck runtime#122871
• [clr-interp] Adjust timeout on NativeRuntimeEventSourceTest runtime#122428
• Replace a couple of Hashtables in CoreLib with ConcurrentDictionary runtime#122918
• Delete references to deleted PAL tests runtime#122914
• JIT: Support async contexts for OSR/EnC runtime#121672
• JIT: Fix alignment for custom layouts with GC refs in them runtime#122873
• JIT: SpanHelpers.Fill may escape its last argument runtime#122902
• JIT: Look harder for async calls in ASYNC_CONTINUATION lowering runtime#122866
• [ThreadPool] Scalability Experiments follow up. Part1  runtime#122726
• Fix WASM exception propagation through native runtime runtime#122908
• JIT: Disallow tailcall stress in async methods runtime#122869
• [browser][coreCLR] rollup improvements runtime#122814
• Fix some memory leaks in mono runtime#122784
• Fix: Socket.SendFile throws when Blocking=false runtime#122831
• Change TypeMapLazyDictionary to use direct cast instead of 'as' operator for RuntimeAssembly runtime#122885
• Restore SuppressGCTransition handling runtime#122904
• Remove now obsolete POPFRAMES runtime#122905
• Remove FEATURE_EH_WINDOWS_X86 and all non-funclet EH code from JIT runtime#122872
• Assume hash handles are always reusable in HashProviderCng. runtime#122813
• Merge CoreMangLib test suite runtime#122314
• Wasm various fixes runtime#122627
• Use Array.Copy in Match.AddMatch runtime#122894
• Avoid double lookup in regex's HashtableExtensions runtime#122892
• Fix JsonSourceGenerator verbatim identifier handling in property initializers runtime#122740
• Fix TagList.CopyTo to not throw when TagList is empty runtime#122849
• Update HybridGlobalization error messages to remove obsolete guidance runtime#122645
• [clr-interp] Tweak GC reporting runtime#122620
• Fix assertion failure in ILDasm with -METADATA=RAW flag runtime#122876
• Skip empty sections when calculating a R2R PE file layout runtime#122820
• JIT: Detect degenerate switches in switch recognition runtime#122865
• Avoid temporary List allocation with HTTP/3 trailers runtime#122677
• [browser][coreCLR] JS modules consistency via gitHash runtime#122801
• JIT: Zero continuation return after profiler leave callback runtime#122490
• Handle more async nodes on community platforms runtime#122727
• Fix regression introduced by recent PR runtime#122850
• [browser][coreCLR] detect browser features and fail fast runtime#122799
• [browser][coreCLR] fix incremental build runtime#122798
• Cleanup always-on FEATURE_EH_FUNCLETS runtime#122833
• Use /O2 for Windows x86 Checked runtime#122846
• Fix thread-safety issue in DriveInfo.GetDrives() on macOS by replacing getmntinfo with getfsstat runtime#122637
• Fix FromBase64Transform buffer sizing and output buffer handling runtime#122805
• Remove managed implementation from SP800-108 on Windows runtime#122816
• Fix trailing data handling with CertificateRevocationListBuilder.LoadPem. runtime#122825
• Fix NullReferenceException in SerialPort event callbacks when handler unsubscribes during invocation runtime#122830
• Consolidate runtime helpers (X86Base, Interlocked, Buffer) across CoreCLR and NativeAOT runtime#122791
• Refactor NativeAOT helpers to align with CoreCLR patterns runtime#121158
• Rename AsyncSafeThreadMap to SignalSafeThreadMap runtime#122794
• Split GetInterpThreadContext into allocating and non-allocating variants runtime#122688
• Move RBM_SAVED_LOCALLOC_SP reservation from compCompile to setFrameType in LSRA runtime#121745
• [RISC-V] Comment and formatting cleanup in codegenriscv64 runtime#122589
• Remove Environment.IsWindows8OrAbove property and related Windows 7 compatibility code runtime#122810
• [main] Source code updates from dotnet/dotnet runtime#122581
• Consolidate classlibnative directory into vm runtime#122780
• [System.DirectoryServices] Fixed possible NRE in SAMStoreCtx.cs runtime#118123
• Support ICU v78 changes including IDN and Japanese Meiji era start date runtime#122480
• [browser][coreCLR] running main/exit/abort/logging and infra for unit testing runtime#122646
• Move stgpool to md subsystem, extract memory streams, eliminate VM dependencies on MD internals runtime#122723
• [LoongArch64] Align PR#108419: Verify TLS resolver code for LA64. runtime#122767
• Include CMakeConfigureLog in logs artifacts runtime#122537
• [browser] provide dummy icon and template icon runtime#122775
• Handle QueueUserAPC2 failure during thread suspension runtime#122768
• Fix debug build runtime#122753
• Resolve dllimport.cpp runtimeasync todos runtime#122466
• Refactor lock upgrade logic runtime#122571
• Cleanup some unused code in coreclr pal runtime#122733
• Bump actions/checkout from 4 to 6 runtime#122003
• Bump actions/github-script from 7 to 8 runtime#122465
• Bump actions/upload-artifact from 4 to 5 runtime#122004
• Add exit code check after bootstrap build in eng/build.ps1 runtime#122665
• Fix GCInfoDumper runtime#122682
• Use QueryUnbiasedInterruptTime instead of GetTickCount64 to allow more responsive Windows apps when they opt-in runtime#122706
• Fix MethodBase.GetCurrentMethod with runtime async runtime#122710
• [LoongArch64] Fix the random failed for Fp32x2StructFunc in the profiler test: slowpatheltenter.sh. runtime#122714
• Fix overflow in LengthBuckets for large strings runtime#121674
• Fix up hijacking on x64 platforms in presence of runtime async runtime#122631
• Move managed type system APIs to UTF-8 runtime#122658
• Add native AOT arm64 CFG testing runtime#122701
• Delete redundant RhpUniversalTransition runtime#122689
• Remove implicit string operator from Utf8String runtime#122149
• Fix Native AOT repro project runtime#122695
• Fix dataflow analysis of lambdas in async methods runtime#122623
• Add NoInlining and NoOptimization attributes to ClearWaitSleepJoinState method runtime#122652
• Fix UInt128 to double conversion for values >= 2^104 runtime#122534
• Add zstd library files to the repo runtime#122663
• [browser] Support CoreCLR in WebAssembly SDK runtime#122495
• [browser][coreclr] Add --UseMonoRuntime parameter to wasmbrowser template (default: true) runtime#122641
• Extend the "skip-test" optimization to all instructions that modify the runtime#120876
• [clr-interp] Fix regression caused by my recent changes runtime#122655
• [clr-interp] Enable rejit in the interpreter runtime#122626
• [clr-interp] Add support for unmanaged thiscall calling convention runtime#122600
• [clr-interp] Add logic to fix tail-call issues runtime#122618
• Refactor HTTP/3 server stream handling to consolidate exception handling for stream resets runtime#122561
• [clr-interp] Fix abstract newobj test runtime#122624
• [browser][mono] simplify internal testing switches runtime#122616
• [browser] Add Helix Job Name for Wasm.Build.Tests jobs runtime#120536
• [clr-ios] Enable CoreCLR tests for tvOS in extra-platforms runtime#122606
• Always read from underlying stream in StreamPipeReader runtime#118041
• [clr-interp] Disable poison test runtime#122622
• [Wasm RyuJIT] Add Instruction Encoding for Local Var Declarations and Emit Local Declarations runtime#122425
• Enable runtime async config switch by default runtime#121732
• Allow emitting line number information into native AOT apps runtime#122227
• remove RuntimeAsyncTaskCore runtime#122505
• [RyuJit/WASM] Register allocator skeleton runtime#122414
• Miscellaneous cleanup runtime#122573
• [browser] Expect fingerprint on dotnet.js for preloading runtime#120694
• Add support for .cgm (Computer Graphics Metafile) extension to MediaTypeMap runtime#122591
• Add fast path to Array.ConstrainedCopy for single-dimensional arrays runtime#122530
• Insert a set of known types and methods references necessary for async thunks into the mutable module runtime#121679
• Fix windows build runtime#122574
• [mono][interp] Disable inlining of methods that always throw runtime#122587
• Remove @available annotations where allowed. runtime#122539
• [Wasm RyuJit] unordered floating point compares runtime#122562
• Add runtime and library tests for Apple mobile on CoreCLR runtime#121305
• [RISC-V] Introduce Zbs runtime#115335
• Add wasm as SPMI target runtime#122510
• [mono][interp] Add max limit to the imported IL when inlining runtime#121580
• [RuntimeAsync] Remove reflection TODOs. Add tests. runtime#122517
• Haiku: Mark unsupported advanced network functions runtime#121882
• Ensure consistency between ThreadState.Stopped APIs that check if a thread is dead runtime#122568
• [cleanup] improve comment alignment in gtlist.h runtime#121784
• Add AddRef to callee that caches interface ptr runtime#122509
• Enable setting the TypeMap entrypoint assembly via a RuntimeHostConfigurationOption runtime#121513
• [RISC-V] Fix too many arguments build error in emitIns_R_AI runtime#122555
• Initial scaffolding and partial implementation of ilasm in C# runtime#122112
• Switch Apple's digest functionality to CryptoKit runtime#120953
• [main] Source code updates from dotnet/dotnet runtime#122478
• [main] Update dependencies from dotnet/icu runtime#122540
• Introduce TYP_SIMD to the JIT for Vector<T> runtime#121548
• Cleanup src/tasks runtime#122551

💡 You may consult the FAQ for more information or tag @dotnet/prodconsvcs for assistance.

[ericstj]

Thank you @akoeplinger @ViktorHofer