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Re-Bootstrap Source Build to .NET 11.0.100-preview.1.26073.106 #4402

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Re-Bootstrap Source Build to .NET 11.0.100-preview.1.26073.106 #4402

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@dotnet-sb-bot dotnet-sb-bot commented Jan 24, 2026

Re-Bootstrap Source Build to .NET 11.0.100-preview.1.26073.106

@dotnet-sb-bot dotnet-sb-bot requested review from a team as code owners January 24, 2026 07:46
@ViktorHofer ViktorHofer enabled auto-merge (squash) January 24, 2026 07:47
@ViktorHofer ViktorHofer disabled auto-merge January 24, 2026 08:31
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ViktorHofer commented Jan 24, 2026

@sbomer the illink analyzer bug is now failing deterministically with a new SDK.

I think we need to fix this before we snap for P1 on Monday afternoon.

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sbomer commented Jan 24, 2026

I merged #4401 to bring in dotnet/runtime#123527 which fixes this for net11.0 projects, but the build is failing on net10.0 projects because those use the net10.0 shipped analyzer. I think we should revert the breaking change: #4404. @jjonescz @agocke

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ViktorHofer commented Jan 26, 2026 •
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I agree with that. We can't produce an 11.0 P1 SDK with that regression and the only way to fix the 10.0 ILLink pack is through servicing. The roslyn API needs to be brought back. I don't see another option.

As Sven stated in another thread, the 10.0 ILLink analyzer from the pack will also start failing with the new compiler when inserted into the SDK / VS.

@jjonescz jjonescz mentioned this pull request Jan 26, 2026
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ViktorHofer commented Jan 26, 2026 •
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Closing as we can't re-bootstrap onto this broken SDK. See above discussion.

@ViktorHofer ViktorHofer deleted the jan2026-source-build-1769240596 branch January 26, 2026 09:26
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