Who contributed to .NET on July 7, 2026?

3 developers shipped this update, including RikkiGibson, T-Gro, and seblyng.

What were the notable .NET updates?

Async Profiler: Combine instrumentation flags usage over profiler/tpl/debugger. (#130083), Set IsClosedTypeAttribute.DerivedTypes, and Use timespec_get on iOS/tvOS/MacCatalyst now that 13.0 is the minimum version (#130246).

@dotnet

The .NET runtime, ASP.NET, and the C# tooling

github ↗

Pick a date

Topics: .NET Full archive →

The Wire · Showcase

RUNTIME CUTS ASYNC PROFILER BLOAT, ROSLYN CLOSES TYPE METADATA GAP

By RepoJournal · Filed 06:05 UTC on July 7, 2026 · About .NET

3 people shipped this

RikkiGibson @RikkiGibson 1 cited

T-Gro @T-Gro 1 cited

seblyng @seblyng 1 cited

The CLR's async instrumentation just got unified under a single gate, letting the ILLinker dead-code-eliminate entire profiling paths the compiler can prove are unreachable.

The async profiler, debugger, and TPL event source have been reworked to flow through one unified instrumentation flags gate [1], shrinking the constant-fold surface for per-client support checks and unlocking aggressive dead-code elimination. This is the kind of internals polish that shows up as smaller binaries and faster startup on constrained devices. In parallel, Roslyn shipped the DerivedTypes metadata format change [2] to align with runtime issue #129009, letting the compiler properly track closed-type semantics in metadata. The iOS/tvOS minimum version bump to 13.0 also let runtime drop the gettimeofday fallback and standardize on timespec_get [3], simplifying platform abstraction. On the F# side, the compiler now emits FS0755 when CompiledName attributes land on multi-value let-bindings [4], catching a silent crash bug that was duplicating compiled names. LSP progress reporting hit Roslyn [5], so neovim and other clients can now see what's loading and how far along the solution parse is.

Action items

→ Review async profiler changes if you ship custom instrumentation or depend on TPL event source dotnet/runtime [plan]
→ Update F# compiler if you use CompiledName on multi-value bindings dotnet/fsharp [plan]
→ Monitor LSP progress reporting changes if you maintain editor integrations dotnet/roslyn [monitor]
→ Check AVFoundation LoadTrack method signatures in macios bindings if you use media APIs dotnet/macios [plan]

References

[1] Async Profiler: Combine instrumentation flags usage over profiler/tpl/debugger. (#130083) dotnet/runtime
[2] Set IsClosedTypeAttribute.DerivedTypes ↗ dotnet/roslyn
[3] Use timespec_get on iOS/tvOS/MacCatalyst now that 13.0 is the minimum version (#130246) dotnet/runtime
[4] Emit FS0755 for CompiledName on multi-value let-bindings ↗ dotnet/fsharp
[5] [LSP] Add progress when loading solution and progress ↗ dotnet/roslyn

Quick answers

What shipped in .NET on July 7, 2026?: The CLR's async instrumentation just got unified under a single gate, letting the ILLinker dead-code-eliminate entire profiling paths the compiler can prove are unreachable. In total, 40 commits and 47 pull requests landed.
Who contributed to .NET on July 7, 2026?: 3 developers shipped this update, including RikkiGibson, T-Gro, and seblyng.
What were the notable .NET updates?: Async Profiler: Combine instrumentation flags usage over profiler/tpl/debugger. (#130083), Set IsClosedTypeAttribute.DerivedTypes, and Use timespec_get on iOS/tvOS/MacCatalyst now that 13.0 is the minimum version (#130246).

WASM RUNTIME SHRINKS 3.6% AS DOTNET HARDENS DEBUGGER EXPORTS

The JIT compiler just cut 815 kilobytes from WebAssembly Core Library by folding address constants into load instructions, while the runtime fixed a silent failure in WASI debugging that would strip metadata from stripped binaries.

dotnet 13 shipped 1-min read

@dotnet 3 days ago

RUNTIME FIXES KERBEROS FALLBACK ON UNIX, APPHOST CONVERTS TO C

The managed SPNEGO implementation now falls back to NTLM when Kerberos credentials go missing on Linux, closing a critical auth gap that broke enterprise deployments [ref:1].

dotnet 120 shipped 1-min read

@dotnet 4 days ago

MACIOS DOCS OVERHAUL SPANS 31 TYPES, ASPNETCORE VALIDATION MOVES TO SOURCE GENERATION

Rolf Bjarne shipped 31 types with proper XML documentation across macios while aspnetcore refactors validation classes out of the public API entirely.

dotnet 25 shipped 1-min read

@dotnet 5 days ago

SQLCLIENT KILLS PLATFORM-SPECIFIC BUILDS, ASPNETCORE HARDENS SIGNALR

SqlClient unified its Windows and Unix code paths without restructuring the NuGet package, collapsing build complexity across the entire SNI layer.

dotnet 97 shipped 2-min read

Elsewhere on the wire

AI Agents about 21 hours ago

CLINE SHIPS FIVE CRITICAL AGENT FIXES AFTER END-TO-END TESTING BLITZ

Saoudrizwan just landed a cascade of fixes that prevent the agent loop from running wild, stop file reads from resolving to the wrong directory, and plug the compaction pipeline.

ai-agents 16 shipped 2-min read

Local LLMs about 21 hours ago

LLAMA.CPP SHIPS MINIMAX-M3 SPARSE ATTENTION, VLLM UNLOCKS HETEROGENEOUS PREFILL-DECODE

The inference stack gets a new model architecture and a fundamental shift in how prefill and decode can run on different hardware configurations.

+10

llms 125 shipped 1-min read

@CachyOS about 21 hours ago

GLIBC 2.43 REBUILD SHIPS, INSTALLER JUMPS TO C++26

CachyOS pushed glibc 2.43 through the pipeline while the CLI installer upgraded its C++ standard to C++26, signaling a major refresh across core infrastructure.

infra 97 shipped 1-min read

Elixir & Phoenix about 21 hours ago

ECTO FIXES SUBQUERY PLANNING IN JOINS, ELIXIR PATCHES IEX PARSING

Ecto's query planner now handles subqueries correctly in interpolated join filters, while Elixir fixes a syntax error that broke 'not in' as a continuation operator in IEx.