Description With the preview release of the new extensions feature, the [UnsafeAccessor] attribute has new usage potential. However, as of .NET 10 Preview 4, this is not supported. Reproduction Ste...

Contributes to #113985 #113985 (comment) identified an issue where GC info is not correctly recorded for inline jumps to finally blocks. It shows up in GC stress testing. This issue already exists ...

Description Generated option validators do not check the contents of Dictionary<K, V> types. Reproduction Steps using System.ComponentModel.DataAnnotations; using Microsoft.Extensions.DependencyInj...

As per offline discussion, we currently don&#39;t have to support other encoding formats other than base64, therefore, we hardcode it on both cases 1) when there&#39;s appropriate underlying option...

FastTailCall in case of split arg also has issues on the LoongArch64 architecture. This PR porting from upstream's #93655.

Failed in: runtime-coreclr jitstress 20250513.1 Failed tests: coreclr windows arm64 Checked jitstress1 @ Windows.11.Arm64.Open - Interop/COM/NativeClients/Dispatch/Dispatch.cmd Error message: Retur...

Includes following changes - Add a convenience overload: Currently, if a caller wants to run evaluations that involve both safety and quality evals, they need to create one ChatConfiguration for th...

Fix the boundary overflow of imm+1 when imm = (~0) for Unsigned GT_LE/GT_GT in CodeGen::genCodeForCompare(). Fix the IntCastOverflowPositiveCheck with UINT32_MAX in CodeGen::genIntCastOverflowCheck...

This pull request updates the following dependencies From https://github.com/dotnet/icu Subscription: 5e3f9b88-faad-436c-a580-ac009d20bb33 Build: 20250514.2 Date Produced: May 14, 2025 11:10:29 PM...

This pull request updates the following dependencies From https://github.com/dotnet/hotreload-utils Subscription: b458125c-6cf0-41ea-981d-2709b660d5c5 Build: 20250514.1 Date Produced: May 14, 2025...

Description Hi .NET Team: I regularly get this error when debugging my app: Microsoft Visual Studio The target process exited with code -2146233082 (0x80131506) while evaluating the function 'Syste...

Notable areas improved The funclets model uses the vectored exception handler to funnel debug events to the debugger FramePointer details for the debugger are inscrutable and weird. I&#39;ve made ...

Under the current JIT rules, the config knobs meant for testing HWIntrinsics APIs and fallback code also impact codegen for ordinary casts. Some casts are implemented directly in codegen, where we...

Treat enums of floating point types (something that's only possible in IL) as an HFA in crossgen2 like we do for CoreCLR.

Add Alpine Edge as a new leg in preparation for Alpine 3.22 support per Consider providing Alpine edge images dotnet-buildtools-prereqs-docker#1426 Increase Arm64 coverage by switch to AL3 + Ubuntu...

This pull request updates the following dependencies From https://github.com/dotnet/arcade Subscription: 880157e9-0697-413c-e34e-08db5b619b22 Build: 20250513.5 Date Produced: May 14, 2025 12:31:08...

This pull request updates the following dependencies From https://github.com/dotnet/xharness Subscription: 077f423f-1332-4108-a2ea-08dcc66548e6 Build: 20250512.2 Date Produced: May 12, 2025 9:25:2...

This pull request updates the following dependencies From https://github.com/dotnet/source-build-reference-packages Subscription: 3b2e34b4-9c9e-4da6-a358-02c0b764a22e Build: 20250423.3 Date Produc...

This pull request updates the following dependencies From https://github.com/dotnet/arcade Subscription: f3ed209d-980c-4076-a437-08dbcfd61a5a Build: 20250513.4 Date Produced: May 14, 2025 12:22:08...

This pull request updates the following dependencies From https://github.com/dotnet/source-build-reference-packages Subscription: 1626bff2-6010-444e-f998-08dbcfd3e5b0 Build: 20250410.2 Date Produc...

This pull request updates the following dependencies From https://github.com/dotnet/xharness Subscription: 3c89df73-24a9-48a4-8224-08dbcfd3ad70 Build: 20250505.2 Date Produced: May 5, 2025 2:50:08...

Fixes: #115488

Use the new UnsafeAccessorTypeAttribute to provide a more strongly-typed and straightforward mechanism to solve our layering issues in the product than the traditional Reflection API surface.

This resolves #115493

Repro steps: Install .NET 10 Preview 4 with the wasm-tools workload dotnet new blazor -int WebAssembly -o BlazorApp Edit BlazorApp.Client.csproj to add the following MSBuild properties: <WasmPerfTr...

PR #115310 is going to be merged soon but some smaller and/or out-of-scope items were deferred. This is to track that work: Disposing keys in CmsSignature more consistently Test NoSignature signing...

I detected changes in the release/8.0 branch which have not been merged yet to release/8.0-staging. I&#39;m a robot and am configured to help you automatically keep release/8.0-staging up to date, ...

I detected changes in the release/9.0 branch which have not been merged yet to release/9.0-staging. I&#39;m a robot and am configured to help you automatically keep release/9.0-staging up to date, ...

Removing Tensor extension methods temporarily as we need this scoped in and we cannot do that currently.

browser-wasm linux Release AllSubsets_Mono_RuntimeTests monointerpreter is exited with code 137 OOM Contributes to #113724

In .NET 9 Mono changed its internal atomic implementation in atomic.h to use C11 atomics on a number of platforms and CPU architectures, c48aa81, but it was not until we implemented I4 Interlocked....

This change ensures that we will have just one way to create a ChatConfiguration for the Safety evaluators. The removed API was also confusing because it could mislead callers into thinking that th...

IndexOfAny(char[]) has per-call overhead to figure out what to do. On modern .NET it would eventually hit a vectorized helper, but has to analyze the values every time. Quick test with a default Me...

Fixes an issue reported by @RogerBarreto. Microsoft Reviewers: Open in CodeFlow

This was broken yesterday in #114187 On some versions of CMake (potentially just v4.0.0 and later) the install will fail as C:\Program Files is interpreted as containing an escape character \P whic...

Closes #114090 cc: @cston

includes import/export for: PKCS#8 Encrypted PKCS#8 PEM The implementation is very similar to SLH-DSA overall and to ML-KEM for the seed related logic.

Backport of #115556 to release/9.0-staging Customer Impact Customer reported Found internally The JIT may return mistakenly remove explicit field zeroing for some struct fields in methods witho...

Interpreter runs in GC unsafe mode, so without these safepoints for cooperative suspend, the GC could fail to suspend threads executing in the interpreter.

Fixes #114443 IsVectorZero() should allow for all zero vectors and false masks that have been converted to vectors. IsVectorAllBitsSet() should allow for all bits set vectors and true masks that h...

Description Tried to install both dotnet-runtime-8.0 (8.0.16) and aspnetcore-runtime-8.0 via dnf, none of them worked, common dependency dotnet-runtime-deps-8.0 resolves to 8.0.0-8.0.15, so package...

Description When attempting to bind IReadOnlySet<Guid> to a list of guids in appsettings the value will be empty unless we use IReadOnlySet<string> instead. Reproduction Steps using System.Runtime....

When it&#39;s generating a minidump a failure was happening while calling ilVersion.GetIL(); then we are skipping saving all the rest of the information needed to run successfully the !clrstack com...

azcopy is able to download from Azure storage significantly faster than we do with standard web requests. If available on the path, use it to download collections. azcopy saturates my 1 gbit/s conn...

Description When using the ConfigurationBindingGenerator for MicrosoftIdentityOptions from Microsoft.Identity.Web, the binding does not work. There are warning level messages but no error level mes...

Description I've come across a deadlock in System.Net.WebSockets.WebSocketBase. I'm running .Net 9. It's happening when a web socket is being closed from both ends simultaneously. See attached scre...

Description The Generic .NET Host is leaking PhysicalFilesWatcher instances because it doesn't correctly dispose all instances it creates. This is a little bit related to #86146, but not when using...