Analyzer 'Roslynator.CSharp.Analysis.UseEnumFieldExplicitlyAnalyzer' threw an exception of type 'System.InvalidCastException' with message 'Unable to cast object of type 'System.Int32' to type 'System.SByte'

[jroessel]

Product and Version Used:

• Visual Studio 2022 v17.7.7
• Roslynator 4.6.2

Steps to Reproduce: Have an enum that derives from sbyte (other types may exhibit this problem as well), e.g. the following code, and have a cast of a numeric constant to that enum type somewhere.

var enumValue = TestEnum.Bar;
if (enumValue <= 0 || enumValue >= (TestEnum) 2)
{
  throw new Exception();
}

enum TestEnum : sbyte
{
  Foo, Bar, Baz
}

Actual Behavior:

Analyzer 'Roslynator.CSharp.Analysis.UseEnumFieldExplicitlyAnalyzer' threw an exception of type 'System.InvalidCastException' with message 'Unable to cast object of type 'System.Int32' to type 'System.SByte'.'.
Exception occurred with following context:
Compilation: ConsoleApp5
SyntaxTree: C:\Users\roessel\source\repos\ConsoleApp5\Program.cs
SyntaxNode: (TestEnum) 2 [CastExpressionSyntax]@[66..78) (1,35)-(1,47)

System.InvalidCastException: Unable to cast object of type 'System.Int32' to type 'System.SByte'.
   at Roslynator.ConvertHelpers.ConvertToUInt64(Object value, SpecialType numericType)
   at Roslynator.CSharp.Analysis.UseEnumFieldExplicitlyAnalyzer.AnalyzeCastExpression(SyntaxNodeAnalysisContext context)
   at Microsoft.CodeAnalysis.Diagnostics.AnalyzerExecutor.<>c__49`1.<ExecuteSyntaxNodeAction>b__49_0(ValueTuple`2 data)
   at Microsoft.CodeAnalysis.Diagnostics.AnalyzerExecutor.ExecuteAndCatchIfThrows_NoLock[TArg](DiagnosticAnalyzer analyzer, Action`1 analyze, TArg argument, Nullable`1 info, CancellationToken cancellationToken)

Expected Behavior:

A suggestion to use the actual enum constant instead of the analyzer crashing.