API compat error for `DisableGeneratedCodeHeuristics` in ILLink

[PranavSenthilnathan]

Build Information

Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1099923&view=results
Build error leg or test failing: windows-x64 Debug Libraries_WithPackages

Error Message

Fill the error message using step by step known issues guidance.

{
  "ErrorMessage": "error CP0002: (NETCORE_ENGINEERING_TELEMETRY=Build) Member 'bool Mono.Linker.LinkContext.DisableGeneratedCodeHeuristics.get' exists on lib/net10.0/illink.dll but not on ref/net10.0/illink.dll",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1099923
Error message validated: [error CP0002: (NETCORE_ENGINEERING_TELEMETRY=Build) Member 'bool Mono.Linker.LinkContext.DisableGeneratedCodeHeuristics.get' exists on lib/net10.0/illink.dll but not on ref/net10.0/illink.dll]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 7/19/2025 9:57:37 PM UTC

Report

Build	Definition	Step Name	Console log	Pull Request
1100634	dotnet/runtime	Build product	Log	#117679
1100510	dotnet/runtime	Build product	Log	#116682
1100487	dotnet/runtime	Build product	Log	#117871
1100488	dotnet/runtime	Build product	Log	#117593
1100438	dotnet/runtime	Build product	Log	#117869
1100413	dotnet/runtime	Build product	Log	#117868
1100409	dotnet/runtime	Build product	Log	#117697
1100405	dotnet/runtime	Build product	Log	#117701
1100353	dotnet/runtime	Build product	Log	#117856
1100351	dotnet/runtime	Build product	Log
1100229	dotnet/runtime	Build product	Log	#117817
1100333	dotnet/runtime	Build product	Log	#117865
1100120	dotnet/runtime	Build product	Log	#117831
1100277	dotnet/runtime	Build product	Log	#117584
1100214	dotnet/runtime	Build product	Log	#117858
1100201	dotnet/runtime	Build product	Log
1100148	dotnet/runtime	Build product	Log	#117845
1099901	dotnet/runtime	Build product	Log	#117847
1100117	dotnet/runtime	Build product	Log	#117856
1099923	dotnet/runtime	Build product	Log	#117850
1100098	dotnet/runtime	Build product	Log	#117694
1100074	dotnet/runtime	Build product	Log
1099446	dotnet/runtime	Build product	Log	#117797
1099436	dotnet/runtime	Build product	Log	#117796

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
13	24	24

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[elinor-fung]

DisableGeneratedCodeHeuristics was added in #117624 - cc @sbomer

[sbomer]

Fixed in #117875, thanks @MichalStrehovsky!