switch statement issues invalid opcode=switch

[pengzeshan]

here is a simple csharp program for triggering the issue: namespace ConsoleApp1 { class Program { static void Main(string[] args){} public char GetID(int value) { char toRet = ' '; switch (value) { case 1: toRet = 'a'; break; case 4: default: toRet = 'b'; break; } return toRet; } } }

Here is the error message: Severity Code Description Project File Line Suppression State Error MSB4018 The "Translate" task failed unexpectedly. IL2C.InvalidProgramSequenceException: Invalid opcode: Method=ConsoleApp1.Program.GetID(System.Int32), OpCode=switch, Offset=11 at IL2C.AssemblyPreparer.d1.MoveNext() in C:\cygwin\home\damon.peng\workspace\workForCH\dotNet\IL2C\IL2C.Core\AssemblyPreparer.cs:line 64 at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext() at System.Linq.Enumerable.d172.MoveNext() at System.Linq.Buffer1..ctor(IEnumerable1 source) at System.Linq.OrderedEnumerable1.d1.MoveNext() at System.Linq.Enumerable.ToDictionary[TSource,TKey,TElement](IEnumerable1 source, Func2 keySelector, Func2 elementSelector, IEqualityComparer1 comparer) at System.Linq.Enumerable.ToDictionary[TSource,TKey,TElement](IEnumerable1 source, Func2 keySelector, Func`2 elementSelector) at IL2C.AssemblyPreparer.PrepareMethodBody(IPrepareContext prepareContext, IMethodInformation method) in C:\cygwin\home\damon.peng\workspace\workForCH\dotNet\IL2C\IL2C.Core\AssemblyPreparer.cs:line 134 at IL2C.AssemblyPreparer.PrepareMethod(IPrepareContext prepareContext, IMethodInformation method) in C:\cygwin\home\damon.peng\workspace\workForCH\dotNet\IL2C\IL2C.Core\AssemblyPreparer.cs:line 256 at IL2C.AssemblyPreparer.<>cDisplayClass5_0.b4(<>fAnonymousType12 <>h__TransparentIdentifier0) in C:\cygwin\home\damon.peng\workspace\workForCH\dotNet\IL2C\IL2C.Core\AssemblyPreparer.cs:line 310 at System.Linq.Enumerable.WhereSelectEnumerableIterator2.MoveNext() at System.Linq.Enumerable.WhereSelectEnumerableIterator2.MoveNext() at System.Linq.Enumerable.ToDictionary[TSource,TKey,TElement](IEnumerable1 source, Func2 keySelector, Func2 elementSelector, IEqualityComparer1 comparer) at System.Linq.Enumerable.ToDictionary[TSource,TKey,TElement](IEnumerable1 source, Func2 keySelector, Func2 elementSelector) at IL2C.AssemblyPreparer.Prepare(TranslateContext translateContext, Func2 predictType, Func2 predictMethod) in C:\cygwin\home\damon.peng\workspace\workForCH\dotNet\IL2C\IL2C.Core\AssemblyPreparer.cs:line 305 at IL2C.AssemblyPreparer.Prepare(TranslateContext translateContext) in C:\cygwin\home\damon.peng\workspace\workForCH\dotNet\IL2C\IL2C.Core\AssemblyPreparer.cs:line 320 at IL2C.SimpleDriver.Translate(TextWriter logw, CodeTextStorage storage, Boolean readSymbols, Boolean enableBundler, TargetPlatforms targetPlatform, DebugInformationOptions debugInformationOptions, String assemblyPath) in C:\cygwin\home\damon.peng\workspace\workForCH\dotNet\IL2C\IL2C.Core\SimpleDriver.cs:line 39 at IL2C.SimpleDriver.TranslateAll(TextWriter logw, String outputPath, Boolean readSymbols, Boolean enableCpp, Boolean enableBundler, TargetPlatforms targetPlatform, DebugInformationOptions debugInformationOptions, IEnumerable`1 assemblyPaths) in C:\cygwin\home\damon.peng\workspace\workForCH\dotNet\IL2C\IL2C.Core\SimpleDriver.cs:line 121 at IL2C.SimpleDriver.TranslateAll(TextWriter logw, String outputPath, Boolean readSymbols, Boolean enableCpp, Boolean enableBundler, TargetPlatforms targetPlatform, DebugInformationOptions debugInformationOptions, String[] assemblyPaths) in C:\cygwin\home\damon.peng\workspace\workForCH\dotNet\IL2C\IL2C.Core\SimpleDriver.cs:line 142 at IL2C.Translate.Execute() in D:\PROJECT\IL2C\IL2C.Tasks\Translate.cs:line 86 at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute() at Microsoft.Build.BackEnd.TaskBuilder.d__26.MoveNext() ConsoleApp1 C:\Users\damon.peng.nuget\packages\il2c.build\0.4.113\build\IL2C.Build.targets 19

here is the il2c.build version: .4.113