System.Globalization.CultureData.GetNFIValues throws System.IndexOutOfRangeException: Index was outside the bounds of the array

[iSazonov]

In PowerShell repo we get a report with stack trace:
PowerShell/PowerShell#12476

Unhandled exception. System.TypeInitializationException: The type initializer for 'System.Management.Automation.Tracing.PSEtwLog' threw an exception.
---> System.TypeInitializationException: The type initializer for 'System.Management.Automation.Tracing.PSEtwLogProvider' threw an exception.
---> System.IndexOutOfRangeException: Index was outside the bounds of the array.
at System.Globalization.CultureData.GetNFIValues(NumberFormatInfo nfi)
at System.Globalization.NumberFormatInfo..ctor(CultureData cultureData)
at System.Globalization.CultureInfo.get_NumberFormat()
at System.Globalization.CultureInfo.GetFormat(Type formatType)
at System.Globalization.NumberFormatInfo.get_CurrentInfo()
at System.Guid.TryParseExactD(ReadOnlySpan`1 guidString, GuidResult& result)
at System.Guid.TryParseGuid(ReadOnlySpan`1 guidString, GuidResult& result)
at System.Guid..ctor(String g)
at System.Management.Automation.Tracing.PSEtwLogProvider..cctor()
--- End of inner exception stack trace ---
at System.Management.Automation.Tracing.PSEtwLog..cctor()
--- End of inner exception stack trace ---
at System.Management.Automation.Tracing.PSEtwLog.LogConsoleStartup()
at Microsoft.PowerShell.UnmanagedPSEntry.Start(String consoleFilePath, String[] args, Int32 argc)
at Microsoft.PowerShell.ManagedPSEntry.Main(String[] args)

I tried to reproduce without success. I don't know whether the issue in in .Net or OS (Windows Server 2016). Cuture 1053 sv-SE Swedish (Sweden).

I guess the Guid ctor is called in follow code:

        internal static readonly Guid ProviderGuid = new Guid("F90714A8-5509-434A-BF6D-B1624C8A19A2");

Tagging subscribers to this area: @tarekgh, @safern, @krwq
Notify danmosemsft if you want to be subscribed.

[Sascha-69]

the culture was set to Swedish and it happens on Windows Server 2016 (10.0.14393), patching is current (at least for the part which is provided in our company via WSUS after last patch Tuesday.)

[tarekgh]

@iSazonov which net core version you are using?

[iSazonov]

Original report says about PowerShell 7.0 and PowerShell 7.1 Preview2:

• PowerShell 7.0 - .Net Core 3.1
• PowerShell 7.1 Preview2 - .Net Core 5.0 Preview3

[iSazonov]

I was able to find only one place where the exception can come from

runtime/src/libraries/System.Private.CoreLib/src/System/Globalization/CultureData.cs

Lines 2202 to 2208 in 1db45ed

	// LOCALE_SNATIVEDIGITS (array of 10 single character strings).
	string digits = GetLocaleInfoCore(LocaleStringData.Digits);
	nfi._nativeDigits = new string[10];
	for (int i = 0; i < nfi._nativeDigits.Length; i++)
	{
	nfi._nativeDigits[i] = char.ToString(digits[i]);
	}

Which makes me think that it comes from the OS system.

[tarekgh]

@iSazonov properly you are right. we had some issues before which we have fixed awhile ago and .Net Core 3.1 should have such fixes. For this one, I don't think this is actionable from .NET side. Please try to get a repro and then report the issue to the Windows team through Windows 10 Feedback Hub. I am closing this issue here, feel free to respond back if you think we can help in anything and we'll be happy to do so.

[tarekgh]

@Sascha-69 is it possible on the machine which repro the issue to run the following code and send back the results?

        [DllImport("kernel32.dll", SetLastError = true, CharSet = CharSet.Unicode)]
        public static extern int GetLocaleInfoEx(string lpLocaleName, int LCType, char [] lpLCData, int cchData);

        // ....

            const int LOCALE_SNATIVEDIGITS = 0x00000013;   // native digits for 0-9
            char[] chars = new char[100];
            foreach (CultureInfo ci in CultureInfo.GetCultures(CultureTypes.AllCultures))
            {
                int result = GetLocaleInfoEx(ci.Name, LOCALE_SNATIVEDIGITS, chars, chars.Length);
                Console.WriteLine($"{ci.Name} .. {result}");
            }

[Sascha-69]

I'll need a bit more time, I have seen your comment at 3:00 am, seem I can't run(or I'm not able to do run) your code on the fly.
Sorry, I'm an engineer with solid PowerShell knowledge, but even if I have wrote something in c#, it takes me time, because it isn't my daily work. It is the fun and voluntary part of my work.
But it happens once every 1 or 2 Years only ;-). Means I don't have much time for such things.

I can get it to run on my normal computer, but at the Windows Server 2016 it is missing the hostfxr.dll.
That is an expected behaviour, because there isn't .Net Core installed by default. Powershell 7 comes with self contained .Net Core (if I get it right). So there wasn't need for it.

Regards from Germany, even if the issue happens with Swedish locale

[Sascha-69]

Couldn't find sleep again. It seems you hit it, every output is 11 besides the one for sv_SE here it is 10.

[iSazonov]

@Sascha-69 You can use follow on Windows PowerShell:

$Source = @"

using System.Runtime.InteropServices;
using System.Globalization;

public class BasicTest
{
        [DllImport("kernel32.dll", SetLastError = true, CharSet = CharSet.Unicode)]
        public static extern int GetLocaleInfoEx(string lpLocaleName, int LCType, char [] lpLCData, int cchData);

        public static void Test()
        {
            const int LOCALE_SNATIVEDIGITS = 0x00000013;   // native digits for 0-9
            char[] chars = new char[100];
            foreach (CultureInfo ci in CultureInfo.GetCultures(CultureTypes.AllCultures))
            {
                int result = GetLocaleInfoEx(ci.Name, LOCALE_SNATIVEDIGITS, chars, chars.Length);
                System.Console.WriteLine("{0} .. {1}", ci.Name, result);
            }
        }
}

"@

Add-Type -TypeDefinition $Source

[BasicTest]::Test()

[Sascha-69]

Thanks again, at the end the result was the same, but my way was a bit longer.

if I exclude every result with 11, then it looks more clear now:

sv-SE .. 10
zh-CHS .. 0
zh-CHT .. 0

[iSazonov]

I see 11 on my system (Windows 10/Server 2019) for all except
zh-CHS .. 0
zh-CHT .. 0