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Remove host_mode_t::split_fx#131348

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elinor-fung merged 4 commits into
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copilot/remove-host-mode-split-fx
Jul 25, 2026
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Remove host_mode_t::split_fx#131348
elinor-fung merged 4 commits into
mainfrom
copilot/remove-host-mode-split-fx

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Copilot AI commented Jul 24, 2026

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The host_mode_t::split_fx kicked in when coreclr was next to the .NET root, there's no .deps.json in the root, and there is an .runtimeconfig.json in the current working directory. This was for 1.x scenarios that have not existed for many years and can actually cause confusing or incorrect behaviour now (#12933 (comment), #64517).

Fixes #64517

cc @dotnet/appmodel @AaronRobinsonMSFT

Copilot AI and others added 2 commits July 24, 2026 18:03
Co-authored-by: elinor-fung <47805090+elinor-fung@users.noreply.github.com>
Co-authored-by: elinor-fung <47805090+elinor-fung@users.noreply.github.com>

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@elinor-fung elinor-fung changed the title Add tombstone comment for split_fx (value 3) in host_mode_t enum Remove host_mode_t::split_fx Jul 24, 2026
Copilot AI requested a review from elinor-fung July 24, 2026 20:51
Comment thread src/native/corehost/fxr/fx_muxer.cpp Outdated
Co-authored-by: elinor-fung <47805090+elinor-fung@users.noreply.github.com>
Copilot AI review requested due to automatic review settings July 24, 2026 21:24

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Copilot AI requested a review from elinor-fung July 24, 2026 21:25
Comment thread src/native/corehost/host_interface.h Outdated
Copilot AI review requested due to automatic review settings July 24, 2026 21:36
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elinor-fung marked this pull request as ready for review July 24, 2026 21:39
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Copilot's findings

  • Files reviewed: 4/4 changed files
  • Comments generated: 1

Comment thread src/native/corehost/host_interface.h
@elinor-fung elinor-fung added this to the 11.0.0 milestone Jul 25, 2026
@elinor-fung
elinor-fung merged commit cb58529 into main Jul 25, 2026
173 of 175 checks passed
@elinor-fung
elinor-fung deleted the copilot/remove-host-mode-split-fx branch July 25, 2026 02:11
@github-project-automation github-project-automation Bot moved this to Done in AppModel Jul 25, 2026
hez2010 pushed a commit to hez2010/runtime that referenced this pull request Jul 26, 2026
The `host_mode_t::split_fx` kicked in when coreclr was next to the .NET
root, there's no <app>.deps.json in the root, and there is an
<app>.runtimeconfig.json in the current working directory. This was for
1.x scenarios that have not existed for many years and can actually
cause confusing or incorrect behaviour now
(dotnet#12933 (comment),
dotnet#64517).

Fixes dotnet#64517

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: elinor-fung <47805090+elinor-fung@users.noreply.github.com>
Co-authored-by: Elinor Fung <elfung@microsoft.com>
@dotnet-milestone-bot dotnet-milestone-bot Bot modified the milestones: 11.0.0, 11.0-rc1 Jul 26, 2026
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