Fix: MonoRuntimeMixedModeExcludedAssembly ignored when WasmShellAOTProfileExcludedMethods unset by Copilot · Pull Request #1027 · unoplatform/Uno.Wasm.Bootstrap

Copilot · 2026-01-26T13:03:53Z

Original prompt

This section details on the original issue you should resolve

<issue_title>[AOT] MonoRuntimeMixedModeExcludedAssembly is not taken into account if WasmShellAOTProfileExcludedMethods is not specified</issue_title>
<issue_description>### Current behavior 🐛

MonoRuntimeMixedModeExcludedAssembly should be useable independently to filter the AOT profile.

Expected behavior 🎯

Profile filtering is properly enabled.

How to reproduce it (as minimally and precisely as possible) 🔬

No response

Workaround 🛠️

No response

Renderer 🎨

Skia

Native

Affected platforms 📱💻🖥️

No response

Uno.Sdk version (and other relevant versions) 📦

10.0.15

IDE version 🧑‍💻

No response

Anything else we need to know? 💬

No response</issue_description>

<agent_instructions>Make sure to add a new test that will validate this behavior using the WasmShellGenerateAOTProfileDebugList file generation, as a post build step.</agent_instructions>

Comments on the Issue (you are @copilot in this section)

Fixes [AOT] MonoRuntimeMixedModeExcludedAssembly is not taken into account if WasmShellAOTProfileExcludedMethods is not specified #1026

💬 We'd love your input! Share your thoughts on Copilot coding agent in our 2 minute survey.

The issue was that MixedModeExcludedAssembly parameter was being passed as a property (string) instead of an item group (array). This prevented MonoRuntimeMixedModeExcludedAssembly from working independently. Also added a test project to validate the fix using WasmShellGenerateAOTProfileDebugList. Co-authored-by: jeromelaban <5839577+jeromelaban@users.noreply.github.com>

CLAassistant · 2026-01-26T13:07:47Z

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
1 out of 2 committers have signed the CLA.

✅ jeromelaban
❌ Copilot
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

Co-authored-by: jeromelaban <5839577+jeromelaban@users.noreply.github.com>

jeromelaban · 2026-01-26T13:22:54Z

@copilot The new test is not taken into account in CI, let's fix that.

Added Uno.Wasm.Tests.MixedModeProfile to the netcore-only solution filter to ensure it's built and validated as part of continuous integration. Co-authored-by: jeromelaban <5839577+jeromelaban@users.noreply.github.com>

Copilot · 2026-01-26T13:26:40Z

@copilot The new test is not taken into account in CI, let's fix that.

Added the test project to the netcore-only solution filter in commit 05a73a5. The test will now be built as part of the CI pipeline.

jeromelaban · 2026-01-26T13:27:10Z

@copilot The test is still not run in the right environment. You must add it to the ci pipeline explicitly with the dotnet publish command, otherwise, the AOT process will not be used.

Added dedicated build steps to both Linux and Windows CI pipelines that explicitly run 'dotnet publish' on the MixedModeProfile test project. This ensures the AOT process runs and the post-build validation target can verify that profile filtering works correctly. Co-authored-by: jeromelaban <5839577+jeromelaban@users.noreply.github.com>

Copilot · 2026-01-26T13:28:55Z

@copilot The test is still not run in the right environment. You must add it to the ci pipeline explicitly with the dotnet publish command, otherwise, the AOT process will not be used.

Added explicit dotnet publish steps for the MixedModeProfile test to both Linux and Windows CI pipelines in commit 2d292c6. The test will now be published with AOT enabled, triggering the post-build validation that checks for the profile dump files.

jeromelaban · 2026-01-26T13:32:55Z

@copilot The profile should be analyzed to determine if a specific method can be found in it or not (filtering should remove a specific full assembly. Don't update nuget.exe as well.

- Enhanced post-build validation to actually analyze profile content - Verifies Newtonsoft.Json methods exist in original profile - Verifies Newtonsoft.Json and System.Xml methods are excluded from filtered profile - Removed accidentally added nuget.exe binary - Updated README with detailed validation information Co-authored-by: jeromelaban <5839577+jeromelaban@users.noreply.github.com>

github-actions · 2026-01-26T13:35:10Z

Azure Static Web Apps: Your stage site is ready! Visit it here: https://white-river-0087b630f-1027.eastus2.1.azurestaticapps.net

Copilot · 2026-01-26T13:35:14Z

@copilot The profile should be analyzed to determine if a specific method can be found in it or not (filtering should remove a specific full assembly. Don't update nuget.exe as well.

Enhanced the profile validation in commit 363111b. The test now:

Reads and analyzes both profile dump files
Verifies Newtonsoft.Json methods exist in the original profile
Verifies Newtonsoft.Json and System.Xml methods are NOT in the filtered profile
Provides detailed error messages showing method counts

Also removed the accidentally added nuget.exe binary.

jeromelaban · 2026-01-26T13:56:53Z

@copilot The build fails with:

/__w/1/s/src/Uno.Wasm.Tests.MixedModeProfile/Uno.Wasm.Tests.MixedModeProfile.csproj : Solution file error MSB5028: Solution filter file at "/__w/1/s/src/Uno.Wasm.Bootstrap-netcore-only.slnf" includes project "Uno.Wasm.Tests.MixedModeProfile/Uno.Wasm.Tests.MixedModeProfile.csproj" that is not in the solution file at "/__w/1/s/src/Uno.Wasm.Bootstrap.sln".

The test project was added to the solution filter but not to the main .sln file, causing MSB5028 build error. Added the project entry with proper configuration mappings and nested it under the Tests folder. Co-authored-by: jeromelaban <5839577+jeromelaban@users.noreply.github.com>

Copilot · 2026-01-26T13:59:28Z

@copilot The build fails with:

Fixed in commit 70776c0. The test project was added to the solution filter (.slnf) but not to the main solution file (.sln). Added the project entry with proper Debug/Release configuration mappings and nested it under the Tests solution folder.

github-actions · 2026-01-26T14:03:29Z

Azure Static Web Apps: Your stage site is ready! Visit it here: https://white-river-0087b630f-1027.eastus2.1.azurestaticapps.net

jeromelaban · 2026-01-26T18:27:07Z

@copilot The build is failing with on windows:

D:\a\1\s\src\Uno.Wasm.Tests.MixedModeProfile\Uno.Wasm.Tests.MixedModeProfile.csproj(56,3): error : AOTProfileDump.Original.txt was not generated. MonoRuntimeMixedModeExcludedAssembly may not be working correctly.

Also, it seems that adding the csproj to the netcore-only filter causes memory issues on the build agent. Let's remove it from the slnf, and we'll let the single test run on its own.

- Removed MixedModeProfile from netcore-only.slnf to avoid memory issues - Changed validation target to run AfterTargets="Publish" instead of "Build" - Added condition to only run validation when WasmAotProfilePath is set - AOT profile processing happens during Publish, not Build phase Co-authored-by: jeromelaban <5839577+jeromelaban@users.noreply.github.com>

Copilot · 2026-01-26T18:29:00Z

@copilot The build is failing with on windows:

Fixed in commit ddecc5f:

Removed the test from netcore-only.slnf to avoid memory issues
Changed validation target to run after "Publish" instead of "Build" (AOT profile processing happens during publish phase)
Added condition to only run validation when WasmAotProfilePath is set

The test now runs standalone via the explicit dotnet publish steps in the CI pipeline.

github-actions · 2026-01-26T18:32:38Z

Azure Static Web Apps: Your stage site is ready! Visit it here: https://white-river-0087b630f-1027.eastus2.1.azurestaticapps.net

jeromelaban · 2026-01-27T02:08:00Z

@copilot The new test is failing in:

/__w/1/s/src/Uno.Wasm.Tests.MixedModeProfile/Uno.Wasm.Tests.MixedModeProfile.csproj(76,3): error : No Newtonsoft.Json methods found in original profile. The test may not be using the assembly correctly.

…tion - Updated Program.cs to actually use Newtonsoft.Json (SerializeObject/DeserializeObject) - Changed from WasmShellEnableAotProfile to WasmAotProfilePath property - This ensures Newtonsoft.Json methods are in the AOT profile so validation can verify they're filtered out Co-authored-by: jeromelaban <5839577+jeromelaban@users.noreply.github.com>

Copilot · 2026-01-27T02:10:00Z

@copilot The new test is failing in:

Fixed in commit 2160d63:

Updated Program.cs to actually use Newtonsoft.Json (SerializeObject and DeserializeObject calls)
Changed profile configuration from WasmShellEnableAotProfile item to WasmAotProfilePath property

The test now uses Newtonsoft.Json in the code, ensuring its methods are included in the AOT profile so the validation can verify they're properly filtered out by MonoRuntimeMixedModeExcludedAssembly.

github-actions · 2026-01-27T16:36:09Z

Azure Static Web Apps: Your stage site is ready! Visit it here: https://white-river-0087b630f-1027.eastus2.1.azurestaticapps.net

github-actions · 2026-01-27T16:36:17Z

Azure Static Web Apps: Your stage site is ready! Visit it here: https://white-river-0087b630f-1027.eastus2.1.azurestaticapps.net

jeromelaban · 2026-01-29T13:30:38Z

@Mergifyio backport release/stable/10.0

mergify · 2026-01-29T13:30:45Z

backport release/stable/10.0

✅ Backports have been created

Details

#1028 Fix: MonoRuntimeMixedModeExcludedAssembly ignored when WasmShellAOTProfileExcludedMethods unset (backport #1027) has been created for branch release/stable/10.0

…0.0/pr-1027 Fix: MonoRuntimeMixedModeExcludedAssembly ignored when WasmShellAOTProfileExcludedMethods unset (backport #1027)

Initial plan

7fbc530

Copilot AI assigned Copilot and jeromelaban Jan 26, 2026

Copilot started work on behalf of jeromelaban January 26, 2026 13:04 View session

Copilot AI and others added 2 commits January 26, 2026 13:08

docs: Add README for MixedModeProfile test

513d477

Co-authored-by: jeromelaban <5839577+jeromelaban@users.noreply.github.com>

chore: Complete fix for AOT profile filtering

32926cc

Co-authored-by: jeromelaban <5839577+jeromelaban@users.noreply.github.com>

Copilot AI changed the title ~~[WIP] Fix AOT profile filtering for MonoRuntimeMixedModeExcludedAssembly~~ Fix: MonoRuntimeMixedModeExcludedAssembly ignored when WasmShellAOTProfileExcludedMethods unset Jan 26, 2026

Copilot AI requested a review from jeromelaban January 26, 2026 13:14

Copilot finished work on behalf of jeromelaban January 26, 2026 13:14

Copilot started work on behalf of jeromelaban January 26, 2026 13:23 View session

ci: Add MixedModeProfile test to CI build

05a73a5

Added Uno.Wasm.Tests.MixedModeProfile to the netcore-only solution filter to ensure it's built and validated as part of continuous integration. Co-authored-by: jeromelaban <5839577+jeromelaban@users.noreply.github.com>

Copilot finished work on behalf of jeromelaban January 26, 2026 13:26

Copilot started work on behalf of jeromelaban January 26, 2026 13:27 View session

Copilot finished work on behalf of jeromelaban January 26, 2026 13:29

jeromelaban marked this pull request as ready for review January 26, 2026 13:31

Copilot started work on behalf of jeromelaban January 26, 2026 13:33 View session

Copilot finished work on behalf of jeromelaban January 26, 2026 13:35

Copilot started work on behalf of jeromelaban January 26, 2026 13:57 View session

Copilot finished work on behalf of jeromelaban January 26, 2026 14:00

Copilot started work on behalf of jeromelaban January 26, 2026 18:27 View session

Copilot finished work on behalf of jeromelaban January 26, 2026 18:29

Copilot started work on behalf of jeromelaban January 27, 2026 02:08 View session

Copilot finished work on behalf of jeromelaban January 27, 2026 02:10

jeromelaban added 2 commits January 27, 2026 11:32

chore: Update profile

13d995c

chore: Disable file generation

70ece07

jeromelaban enabled auto-merge January 27, 2026 18:24

ebariche approved these changes Jan 29, 2026

View reviewed changes

jeromelaban merged commit 7ba215b into main Jan 29, 2026
10 of 11 checks passed

jeromelaban deleted the copilot/fix-aot-profile-filtering branch January 29, 2026 12:32

mergify bot mentioned this pull request Jan 29, 2026

Fix: MonoRuntimeMixedModeExcludedAssembly ignored when WasmShellAOTProfileExcludedMethods unset (backport #1027) #1028

Merged

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jeromelaban added a commit that referenced this pull request Jan 29, 2026

Merge pull request #1028 from unoplatform/mergify/bp/release/stable/1…

90d991a

…0.0/pr-1027 Fix: MonoRuntimeMixedModeExcludedAssembly ignored when WasmShellAOTProfileExcludedMethods unset (backport #1027)

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Expected behavior 🎯

How to reproduce it (as minimally and precisely as possible) 🔬

Workaround 🛠️

Renderer 🎨

Affected platforms 📱💻🖥️

Uno.Sdk version (and other relevant versions) 📦

IDE version 🧑‍💻

Anything else we need to know? 💬

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