Test failure System.IO.Ports.Tests.OpenDevices.OpenDevices01

[VincentBu]

Run: runtime-coreclr libraries-jitstress 20211124.2

Failed test:

net7.0-windows-Release-arm64-CoreCLR_checked-jitminopts-Windows.10.Arm64v8.Open
- System.IO.Ports.Tests.OpenDevices.OpenDevices01

Error message:

System.Exception : Unknown Win32 Error: 5


Stack trace
   at System.IO.Ports.Tests.DosDevices.CallQueryDosDevice(String name, Int32& dataSize) in /_/src/libraries/System.IO.Ports/tests/SerialPort/DosDevices.cs:line 132
   at System.IO.Ports.Tests.DosDevices.Initialize() in /_/src/libraries/System.IO.Ports/tests/SerialPort/DosDevices.cs:line 82
   at System.IO.Ports.Tests.DosDevices..ctor() in /_/src/libraries/System.IO.Ports/tests/SerialPort/DosDevices.cs:line 17
   at System.IO.Ports.Tests.OpenDevices.OpenDevices01() in /_/src/libraries/System.IO.Ports/tests/SerialPort/OpenDevices.cs:line 17

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Issue Details

---

Run: runtime-coreclr libraries-jitstress 20211124.2

Failed test:

net7.0-windows-Release-arm64-CoreCLR_checked-jitminopts-Windows.10.Arm64v8.Open
- System.IO.Ports.Tests.OpenDevices.OpenDevices01

Error message:

System.Exception : Unknown Win32 Error: 5


Stack trace
   at System.IO.Ports.Tests.DosDevices.CallQueryDosDevice(String name, Int32& dataSize) in /_/src/libraries/System.IO.Ports/tests/SerialPort/DosDevices.cs:line 132
   at System.IO.Ports.Tests.DosDevices.Initialize() in /_/src/libraries/System.IO.Ports/tests/SerialPort/DosDevices.cs:line 82
   at System.IO.Ports.Tests.DosDevices..ctor() in /_/src/libraries/System.IO.Ports/tests/SerialPort/DosDevices.cs:line 17
   at System.IO.Ports.Tests.OpenDevices.OpenDevices01() in /_/src/libraries/System.IO.Ports/tests/SerialPort/OpenDevices.cs:line 17

Author:	VincentBu
Assignees:	-
Labels:	arch-arm64, area-System.IO, os-windows
Milestone:	-

[PRIMETSS]

Have been working on a fix for this as part of a larger PR for System.IO.Ports.SerialPort libs.
Basically this is because
https://github.com/PRIMETSS/runtime/commit/87909f22bc27b8a8daab33e5e47ae0d3d8f00efe

Can do a PR for just this? but was planning to do it as part of larger PR.

BUT having issues with running tests over several weeks!!

Two issues:

1. Running Test in VS2022 seems to run ALL tests even flagged with [ConditionalFact] Attribute
   
2. Running tests from CLI runtime\src\libraries\System.IO.Ports\tests>dotnet build /t:test after aborting script when it hits a test that runs for >7 hours! System.IO.Ports.Tests.DiscardOutBuffer.OutBufferFilled_Discard_Multiple() causes files to be left open (requires reboot to kill, as 'dotnet.exe' or 'xunit.console.exe' cannot be killed via Process Explorer, reboot required to allow any further tests to run without errors.

Both really slow down any contribution development.. (How are people running tests locally??)

[ericstj]

I think this was fixed in 0e4909a, @danmoseley can you close if that's correct?

[danmoseley]

Correct, I didn't see this dupe.