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[msbuild] Fix listing devices with no udid. Fixes #24605.#24607

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rolfbjarne merged 2 commits intomainfrom
dev/rolf/issue-24605-dotnet-run
Feb 3, 2026
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[msbuild] Fix listing devices with no udid. Fixes #24605.#24607
rolfbjarne merged 2 commits intomainfrom
dev/rolf/issue-24605-dotnet-run

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In some cases, devicectl may list a device with no udid, so handle this by
using the 'identifier' value as the udid.

Fixes this problem:

error MSB4028: The "GetAvailableDevices" task's outputs could not be retrieved from the "DiscardedDevices" parameter. Parameter "includeEscaped" cannot have zero length.

Fixes #24605.

In some cases, `devicectl` may list a device with no udid, so handle this by
using the 'identifier' value as the udid.

Fixes this problem:

```
error MSB4028: The "GetAvailableDevices" task's outputs could not be retrieved from the "DiscardedDevices" parameter. Parameter "includeEscaped" cannot have zero length.
```

Fixes #24605.
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Pull request overview

Updates the GetAvailableDevices MSBuild task to handle devicectl output where a device may be listed without a UDID, preventing MSBuild from failing when producing discarded-device outputs (Fixes #24605).

Changes:

  • Fall back to identifier when hardwareProperties.udid is missing in devicectl JSON output.
  • Add a regression test covering a mac device entry with no udid, ensuring it’s handled and discarded correctly.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File Description
msbuild/Xamarin.MacDev.Tasks/Tasks/GetAvailableDevices.cs Adds identifier fallback logic for missing UDIDs when parsing devicectl output (and introduces file-based overrides for ctl output).
tests/msbuild/Xamarin.MacDev.Tasks.Tests/TaskTests/GetAvailableDevicesTest.cs Adds a new test JSON sample and test case for a device entry missing udid.

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✅ [CI Build #f6fa34e] Build passed (Build packages) ✅

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Hash: f6fa34ed6fd2fad636b326ecd6b1d5ac251dcb99 [PR build]

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✅ [PR Build #f6fa34e] Build passed (Detect API changes) ✅

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✅ API diff for current PR / commit

NET (empty diffs)

✅ API diff vs stable

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Generator Diff: vsdrops (html) vsdrops (raw diff) gist (raw diff) - Please review changes)

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Hash: f6fa34ed6fd2fad636b326ecd6b1d5ac251dcb99 [PR build]

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✅ [CI Build #f6fa34e] Build passed (Build macOS tests) ✅

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Hash: f6fa34ed6fd2fad636b326ecd6b1d5ac251dcb99 [PR build]

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💻 [CI Build #f6fa34e] Tests on macOS X64 - Mac Sonoma (14) passed 💻

All tests on macOS X64 - Mac Sonoma (14) passed.

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Hash: f6fa34ed6fd2fad636b326ecd6b1d5ac251dcb99 [PR build]

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💻 [CI Build #f6fa34e] Tests on macOS M1 - Mac Ventura (13) passed 💻

All tests on macOS M1 - Mac Ventura (13) passed.

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Hash: f6fa34ed6fd2fad636b326ecd6b1d5ac251dcb99 [PR build]

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💻 [CI Build #f6fa34e] Tests on macOS arm64 - Mac Sequoia (15) passed 💻

All tests on macOS arm64 - Mac Sequoia (15) passed.

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Hash: f6fa34ed6fd2fad636b326ecd6b1d5ac251dcb99 [PR build]

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💻 [CI Build #f6fa34e] Tests on macOS arm64 - Mac Tahoe (26) passed 💻

All tests on macOS arm64 - Mac Tahoe (26) passed.

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Hash: f6fa34ed6fd2fad636b326ecd6b1d5ac251dcb99 [PR build]

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💻 [CI Build #f6fa34e] Tests on macOS M1 - Mac Monterey (12) passed 💻

All tests on macOS M1 - Mac Monterey (12) passed.

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Hash: f6fa34ed6fd2fad636b326ecd6b1d5ac251dcb99 [PR build]

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🚀 [CI Build #f6fa34e] Test results 🚀

Test results

✅ All tests passed on VSTS: test results.

🎉 All 117 tests passed 🎉

Tests counts

✅ cecil: All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (iOS): All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (MacCatalyst): All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (macOS): All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (Multiple platforms): All 1 tests passed. Html Report (VSDrops) Download
✅ dotnettests (tvOS): All 1 tests passed. Html Report (VSDrops) Download
✅ framework: All 2 tests passed. Html Report (VSDrops) Download
✅ fsharp: All 4 tests passed. Html Report (VSDrops) Download
✅ generator: All 5 tests passed. Html Report (VSDrops) Download
✅ interdependent-binding-projects: All 4 tests passed. Html Report (VSDrops) Download
✅ introspection: All 4 tests passed. [attempt 2] Html Report (VSDrops) Download
✅ linker: All 44 tests passed. Html Report (VSDrops) Download
✅ monotouch (iOS): All 9 tests passed. Html Report (VSDrops) Download
✅ monotouch (MacCatalyst): All 11 tests passed. Html Report (VSDrops) Download
✅ monotouch (macOS): All 9 tests passed. Html Report (VSDrops) Download
✅ monotouch (tvOS): All 9 tests passed. Html Report (VSDrops) Download
✅ msbuild: All 2 tests passed. Html Report (VSDrops) Download
✅ windows: All 3 tests passed. Html Report (VSDrops) Download
✅ xcframework: All 4 tests passed. Html Report (VSDrops) Download
✅ xtro: All 1 tests passed. Html Report (VSDrops) Download

Pipeline on Agent
Hash: f6fa34ed6fd2fad636b326ecd6b1d5ac251dcb99 [PR build]

@rolfbjarne rolfbjarne merged commit 6a4ad23 into main Feb 3, 2026
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rolfbjarne added a commit that referenced this pull request Feb 4, 2026
Fixes #24605. (#24616)

In some cases, `devicectl` may list a device with no udid, so handle this by using the 'identifier' value as the udid.

Fixes this problem:

```
error MSB4028: The "GetAvailableDevices" task's outputs could not be retrieved from the "DiscardedDevices" parameter. Parameter "includeEscaped" cannot have zero length.
```

Fixes #24605.

Backport of #24607.
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[net11.0] error testing dotnet-run

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