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The Wire · Showcase

ROSLYN HARDENS RAZOR FORMATTING, MACIOS FIXES RUNTIME RACE

By RepoJournal · Filed · About .NET

davidwengier rolfbjarne Youssef Fahmy 64bitsDuck Jakob Botsch Nielsen Rachel Jarvi chsienki
14 people shipped this
davidwengier @davidwengier 3 cited rolfbjarne @rolfbjarne 3 cited Youssef Fahmy @Youssef1313 2 cited 64bitsDuck @64bitsDuck 1 cited Jakob Botsch Nielsen @jakobbotsch 1 cited Rachel Jarvi @rcj1 1 cited chsienki @chsienki dotnet-maestro[bot] @dotnet-maestro[bot] Surya-Elayaperumal @surya3655 Shane Neuville @PureWeen kubaflo @kubaflo Sven Boemer @sbomer pavelsavara @pavelsavara Andrii Kurdiumov @kant2002

Roslyn expanded C# formatting options to all Razor features while fixing a critical top-level statements diagnostic that was only reporting one file per conflict [ref:1][ref:2].

The Roslyn team completed a multi-phase push to make formatting options consistent across all Razor features - completion, code actions, and resolve - eliminating null checks and making the implementation non-nullable [1][4]. In parallel, a fix now reports CS8802 errors on every file with top-level statements rather than just the entry point, so developers clicking the error list navigate directly to each problematic file [2]. A separate warning now catches the silent-then-crashes pattern of empty outer tags when transitioning from C# to markup [3].

On the macOS side, macios fixed a critical object_map race where an object's native init returning a different pointer than alloc could clobber another object's registration on a different thread [7]. The team also patched simulator runtime downloads to retry on transient network failures, and made generic registrar trampolines relocatable into companion assemblies for Hot Reload [5][6].

ASP.NET Core dropped the deprecated ApiDescription.Client package [8][9], while runtime optimized custom awaiters to eliminate boxing and restored non-stub method resolution in the cDAC [10][11]. 71 commits and 65 PRs landed across 5 repos in this period.

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Action items

References

  1. [1] Always pass C# formatting options to Razor functions ↗ dotnet/roslyn
  2. [2] Report CS8802 on every file with top-level statements ↗ dotnet/roslyn
  3. [3] Warn for empty outer tags when context switching from C# to markup ↗ dotnet/roslyn
  4. [4] Make Razor C# formatting options non-nullable dotnet/roslyn
  5. [5] [CI] Retry simulator runtime downloads on transient network failures. Fixes #26288 ↗ dotnet/macios
  6. [6] [dotnet-linker] Relocate generic registrar trampolines into the companion assembly for Hot Reload ↗ dotnet/macios
  7. [7] [runtime] Fix the alloc/init handle-reuse race in object_map (issue #25861) ↗ dotnet/macios
  8. [8] Drop ApiDescription.Client package (#68211) dotnet/aspnetcore
  9. [9] Drop ApiDescription.Client package ↗ dotnet/aspnetcore
  10. [10] Remove boxing for awaited custom awaiters (#131342) dotnet/runtime
  11. [11] [cDAC] Restore non-stub method resolution in GetRuntimeNameByAddress (#131977) dotnet/runtime

Quick answers

What shipped in .NET on August 7, 2026?
Roslyn expanded C# formatting options to all Razor features while fixing a critical top-level statements diagnostic that was only reporting one file per conflict [ref:1][ref:2]. In total, 71 commits and 65 pull requests landed.
Who contributed to .NET on August 7, 2026?
14 developers shipped this update, including davidwengier, 64bitsDuck, chsienki, rolfbjarne, dotnet-maestro[bot], Youssef Fahmy, Surya-Elayaperumal, and Shane Neuville, and 6 more.
What were the notable .NET updates?
Always pass C# formatting options to Razor functions, Report CS8802 on every file with top-level statements, and Warn for empty outer tags when context switching from C# to markup.

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