Bug 13753 - Error: Compiler crashed with code: 1
Summary: Error: Compiler crashed with code: 1
Alias: None
Product: Compilers
Classification: Mono
Component: C# ()
Version: unspecified
Hardware: Macintosh Mac OS
: --- normal
Target Milestone: ---
Assignee: Marek Safar
Depends on:
Reported: 2013-08-05 11:48 UTC by Jens
Modified: 2013-08-05 13:50 UTC (History)
2 users (show)

Is this bug a regression?: ---
Last known good build:

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Description Jens 2013-08-05 11:48:25 UTC
I currently get a "Error: Compiler crashed with code: 1" when I try to compile my current app and I have no idea what to do about it :(

for a fast look you can look at http://pastebin.com/YV9z66wQ for some diagnosis during the compile

I will attach the app to this bug so you can dig deeper into it.

Comment: in the console app Prepare.Database (it is pretty small so far) this problem happens when I link the file "CoreShared->src->DataClasses->MatchData->FormOfSports.cs" to the project. When that file is not part of the project it compiles fine
Comment 2 Jens 2013-08-05 12:20:20 UTC
as jonp found out:
the problem is in the code after line 44 of "CoreShared->src->DataClasses->MatchData->FormOfSports.cs":

formOfSport = formOfSportList.Find (sport => {
   sport.id == id;

probably a bug in my code, but the compiler should show it instead of crashing...
Comment 3 Jonathan Pryor 2013-08-05 12:26:46 UTC
Minimal test case:

  using System;
  using System.Collections.Generic;

  public class FormOfSport {
    public int id { get; set;}

  public class FormOfSportList {

    private static List<FormOfSport> formOfSportList;

    public static FormOfSport GetFormOfSportById (int id) {
      FormOfSport formOfSport = null;

      formOfSport = formOfSportList.Find (sport => {
        sport.id == id;

      return formOfSport;

    public static void Main ()


    $ mcs src/DataClasses/MatchData/FormOfSportList.cs 
    Compilation failed: 1 error(s), 0 warnings

Hm, not quite handy; more info:

> $ mcs src/DataClasses/MatchData/FormOfSportList.cs  --stacktrace
> 	in Expression.Resolve (Mono.CSharp.ResolveContext, Mono.CSharp.ResolveFlags)
> 	in Expression.Resolve (Mono.CSharp.ResolveContext)
> 	in Assign.DoResolve (Mono.CSharp.ResolveContext)
> 	in SimpleAssign.DoResolve (Mono.CSharp.ResolveContext)
> 	in Expression.Resolve (Mono.CSharp.ResolveContext, Mono.CSharp.ResolveFlags)
> 	in Expression.Resolve (Mono.CSharp.ResolveContext)
> 	in ExpressionStatement.ResolveStatement (Mono.CSharp.BlockContext)
> 	in StatementExpression.Resolve (Mono.CSharp.BlockContext)
> 	in Block.Resolve (Mono.CSharp.BlockContext)
> 	in ParametersBlock.Resolve (Mono.CSharp.FlowBranching, Mono.CSharp.BlockContext, Mono.CSharp.IMethodData)
> 	in MethodData.Emit (Mono.CSharp.TypeDefinition)
> 	in MethodOrOperator.Emit ()
> 	in Method.Emit ()
> 	in TypeDefinition.Emit ()
> 	in ClassOrStruct.Emit ()
> 	in Class.Emit ()
> 	in TypeDefinition.EmitContainer ()
> 	in TypeContainer.EmitContainer ()
> 	in NamespaceContainer.EmitContainer ()
> 	in TypeContainer.EmitContainer ()
> 	in ModuleContainer.EmitContainer ()
> 	in AssemblyDefinition.Emit ()
> 	in AssemblyDefinitionStatic.Emit ()
> 	in Driver.Compile ()
> 	in Driver.Main (System.String[])
> Compilation failed: 1 error(s), 0 warnings

Seen with version:

$ mono --version
Mono JIT compiler version 3.2.0 ((no/7c7fcc7 Tue Jul 23 19:59:39 EDT 2013)
Comment 4 Jonathan Pryor 2013-08-05 12:28:24 UTC
> probably a bug in my code

Indeed, the problem is that the delegate provided to List<T>.Find(Predicate<T>) is missing a `return` keyword; it _should_ be:

     formOfSport = formOfSportList.Find (sport => {
        return sport.id == id;

That said, as Jens pointed out this shouldn't result in a compiler crash.
Comment 5 Marek Safar 2013-08-05 13:43:15 UTC
Already fixed in Mono master. The code reports

1.cs(16,15): error CS0201: Only assignment, call, increment, decrement, await, and new object expressions can be used as a statement
1.cs(15,43): error CS1643: Not all code paths return a value in anonymous method of type `System.Predicate<FormOfSport>'
Comment 6 Jens 2013-08-05 13:50:08 UTC
cool, nice to hear :)