[rel/18.0] Disable DynamicNative instrumentation by default #15298
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nohwnd commented Oct 17, 2025
Youssef1313 reviewed Oct 17, 2025
nohwnd commented Oct 17, 2025
Youssef1313 reviewed Oct 17, 2025
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| LGTM but I would ASAP fix logic in code coverage repository for detection of .NET processes. Simple scenario in VS 18.0 will still fail with those changes:
This will continue failing because.
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jakubch1 approved these changes Oct 17, 2025
Youssef1313 reviewed Oct 17, 2025
Youssef1313 approved these changes Oct 17, 2025
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Approving with a nit question.
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| @nohwnd Do we want to forward port to main? |
nohwnd changed the title Member Author
| /backport to main |
nohwnd added a commit to nohwnd/vstest that referenced this pull request Oct 20, 2025
* Disable DynamicNative instrumentation by default * Also commit tests * Apply suggestion from @nohwnd
nohwnd added a commit that referenced this pull request Oct 20, 2025
* Disable DynamicNative instrumentation by default * Also commit tests * Apply suggestion from @nohwnd
nohwnd added a commit that referenced this pull request Oct 20, 2025
This was referenced Nov 11, 2025
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This was referenced Dec 22, 2025
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Description
Partially fix dotnet/sdk#50950 by disabling the DynamicNative instrumentation by default for all code coverage versions.
This change applies the workaround 1 to all runs under vstest 18: dotnet/sdk#50950 (comment)
This reduces the blast radius of the linked issue. DynamicNative code coverage is not needed for projects that only deal with .NET (managed) components.
If user explicitly enables DynamicNative they will still see the error until a fixed version of Code Coverage is published that loads covrun64 in a way that is compatible with .NET 10.
This change will be effective in VSTest 18, including VisualStudio 18, and dotnet test in .NET 10 SDK 10.0.1xx.
User can globally opt out from this fix by setting
VSTEST_DISABLE_DYNAMICNATIVE_CODECOVERAGE_DEFAULT_SETTING=1. Or they can opt out per run by using runsettings and setting the value themselves to the desired value.