BCUninstaller/Bulk-Crap-Uninstaller · error · ArgumentOutOfRangeException

Unknown range

Error message

Unknown range

What it means

GetRangeString maps a SizeRange to its localised label via a switch covering Tb/Gb/Mb/Kb, after filtering out SizeRange.None. Reaching the default branch means an out-of-enum SizeRange value (e.g. cast from an arbitrary integer) was supplied. In normal flow GetCompactSize only ever assigns valid members, so this is effectively unreachable barring corruption or a future enum change.

Source

Thrown at source/KlocTools/IO/FileSize.cs:212

            string rangeName;
            switch (range)
            {
                case SizeRange.Tb:
                    rangeName = longString ? Localisation.FileSize_TB_Long : Localisation.FileSize_TB_Short;
                    break;
                case SizeRange.Gb:
                    rangeName = longString ? Localisation.FileSize_GB_Long : Localisation.FileSize_GB_Short;
                    break;
                case SizeRange.Mb:
                    rangeName = longString ? Localisation.FileSize_MB_Long : Localisation.FileSize_MB_Short;
                    break;
                case SizeRange.Kb:
                    rangeName = longString ? Localisation.FileSize_KB_Long : Localisation.FileSize_KB_Short;
                    break;

                default:
                    throw new ArgumentOutOfRangeException(nameof(range), range, @"Unknown range");
            }

            return rangeName;
        }


        public XmlSchema GetSchema() { return null; }

        public void ReadXml(XmlReader reader)
        {
            if (reader.MoveToContent() == XmlNodeType.Element)
            {
                reader.Read();
                if (reader.HasValue)
                {
                    _sizeInKb = long.Parse(reader.Value);
                    reader.Read();
                }

View on GitHub (pinned to 608321de98)

Solutions

1. Ensure SizeRange values originate only from the enum members.
2. Add cases for any new enum members and keep the switch exhaustive.
3. Validate the range with Enum.IsDefined before formatting.

if (!Enum.IsDefined(typeof(SizeRange), range))
    throw new ArgumentOutOfRangeException(nameof(range));

When it happens

Trigger: Casting an arbitrary int to SizeRange (e.g. (SizeRange)999); a new enum member added without a matching case; a deserialized/corrupted FileSize yielding an invalid range.

Common situations: Unreachable in normal use; indicates corruption, reflection-based misuse, or a future enum extension without a parser update.

Related errors

• Failed to get MainModule Directory
• Selected tab is invalid or not supported.
• File not found.
• Not a Windows .exe file.
• Win32_Directory.Compress returned {ret}

AI-assisted analysis of BCUninstaller/Bulk-Crap-Uninstaller@608321de98 (2026-08-13). Data as JSON: /api/errors/098d98c35218a9f1. Report an issue: GitHub.