[ci-scan] Build break: NativeMemory not available in Microsoft.Bcl.Memory.Tests on net481

[github-actions]

Build Information

Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1526281
Build error leg or test failing: windows-x64 Release Libraries_NET481 (Build product) - Microsoft.Bcl.Memory.Tests
Reproduced in follow-up build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1526936

Error Details

The Microsoft.Bcl.Memory.Tests project fails to compile for the net481 target because AllocationHelper.cs uses System.Runtime.InteropServices.NativeMemory, which is not available on .NET Framework (net481). This breaks the windows-x64 Release Libraries_NET481 leg on runtime-extra-platforms.

src\libraries\System.Memory\tests\AllocationHelper.cs(29,34): error CS0103: The name 'NativeMemory' does not exist in the current context [src\libraries\Microsoft.Bcl.Memory\tests\Microsoft.Bcl.Memory.Tests.csproj::TargetFramework=net481]
src\libraries\System.Memory\tests\AllocationHelper.cs(29,53): error CS0030: Cannot convert type 'System.IntPtr' to 'nuint' [Microsoft.Bcl.Memory.Tests.csproj::TargetFramework=net481]
src\libraries\System.Memory\tests\AllocationHelper.cs(51,17): error CS0103: The name 'NativeMemory' does not exist in the current context [Microsoft.Bcl.Memory.Tests.csproj::TargetFramework=net481]

Error Message

{
  "ErrorMessage": "AllocationHelper.cs(29,34): error CS0103: The name 'NativeMemory' does not exist in the current context",
  "ErrorPattern": "",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

---

Filed by ci-failure-scan (detection only). ci-failure-fix walks open [ci-scan] KBEs and either opens a small fix PR or comments here to loop in owners — it never disables the test.

Note

This issue was generated by an AI agent (GitHub Copilot / ci-failure-scan).

Warning

Firewall blocked 1 domain

The following domain was blocked by the firewall during workflow execution:

• awmgmcpg

To allow these domains, add them to the network.allowed list in your workflow frontmatter:

network:
  allowed:
    - defaults
    - "awmgmcpg"

See Network Configuration for more information.

Generated by CI Outer-Loop Failure Scanner · 748.4 AIC · ⌖ 17.5 AIC · ⊞ 18.6K · ◷

Report

Build	Repository	Step Name	Console log	Pull Request
1528048	dotnet/runtime	Build product	Log	#131358
1527839	dotnet/runtime	Build product	Log	#131306
1528036	dotnet/runtime	Build product	Log	#130463
1528029	dotnet/runtime	Build product	Log	#131414
1528007	dotnet/runtime	Build product	Log	#128626
1527849	dotnet/runtime	Build product	Log	#131275
1527753	dotnet/runtime	Build product	Log	#129968
1527722	dotnet/runtime	Build product	Log	#131411
1527700	dotnet/runtime	Build product	Log
1527499	dotnet/runtime	Build product	Log	#131408
1527467	dotnet/runtime	Build product	Log
1527449	dotnet/runtime	Build product	Log	#129683
1527354	dotnet/runtime	Build product	Log	#131358
1527334	dotnet/runtime	Build product	Log
1527329	dotnet/runtime	Build product	Log	#131398
1527311	dotnet/runtime	Build product	Log	#131397
1527293	dotnet/runtime	Build product	Log	#118075
1527236	dotnet/runtime	Build product	Log	#131351
1527140	dotnet/runtime	Build product	Log	#131083
1527109	dotnet/runtime	Build product	Log	#131387

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
18	20	20

[jkotas]

Introduced by #131280

cc @tannergooding

[tannergooding]

Looking. Something caused the CI failure to be ignored by Build Analysis