[Mono-bugs] [Bug 588540] New: Internal compiler error when compiling banshee-community-extensions

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http://bugzilla.novell.com/show_bug.cgi?id=588540

http://bugzilla.novell.com/show_bug.cgi?id=588540#c0


           Summary: Internal compiler error when compiling
                    banshee-community-extensions
    Classification: Mono
           Product: Mono: Compilers
           Version: 2.6.x
          Platform: All
        OS/Version: Other
            Status: NEW
          Severity: Critical
          Priority: P5 - None
         Component: C#
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: chkr at plauener.de
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---
           Blocker: ---


User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.8)
Gecko/20100216 Fedora/3.5.8-1.fc11 Firefox/3.5.8

When compiling the banshee-community-extensions gmcs sometimes dies with an
Internal compiler error.

Reproducible: Sometimes

Steps to Reproduce:
1. compile banshee-community-extensions
I have not seen this problem with other mono software so far.

Actual Results:  
 /usr/bin/gmcs -define:RELEASE -debug -target:library
-out:../../bin/Banshee.AlarmClock.dll -r:/usr/lib/banshee-1/Banshee.Core.dll
-r:/usr/lib/banshee-1/Banshee.Services.dll
-r:/usr/lib/banshee-1/Banshee.ThickClient.dll
-r:/usr/lib/banshee-1/Banshee.Widgets.dll -r:/usr/lib/banshee-1/Hyena.Gui.dll
-r:/usr/lib/banshee-1/Hyena.dll -r:/usr/lib/banshee-1/Mono.Data.Sqlite
-r:/usr/lib/banshee-1/Mono.Media.dll -r:/usr/lib/banshee-1/MusicBrainz.dll
-r:/usr/lib/mono/gtk-sharp-2.0/atk-sharp.dll
-r:/usr/lib/mono/gtk-sharp-2.0/gdk-sharp.dll
-r:/usr/lib/mono/gtk-sharp-2.0/glib-sharp.dll
-r:/usr/lib/mono/gtk-sharp-2.0/gtk-sharp.dll
-r:/usr/lib/mono/gtk-sharp-2.0/pango-sharp.dll
-r:/usr/lib/mono/mono-addins/Mono.Addins.dll
-r:/usr/lib/mono/ndesk-dbus-1.0/NDesk.DBus.dll
-r:/usr/lib/mono/ndesk-dbus-glib-1.0/NDesk.DBus.GLib.dll
-r:/usr/lib/mono/taglib-sharp/taglib-sharp.dll -r:Mono.Cairo -r:Mono.Posix
-r:System -r:System.Data -resource:./AlarmClock.addin.xml,AlarmClock.addin.xml
-resource:./Resources/AlarmMenu.xml,AlarmMenu.xml ./Banshee.AlarmClock/Alarm.cs
/Banshee.AlarmClock/AlarmClockService.cs
/Banshee.AlarmClock/AlarmConfigDialog.cs
/Banshee.AlarmClock/ConfigurationDialog.cs
/Banshee.AlarmClock/ConfigurationSchema.cs
/Banshee.AlarmClock/SleepTimerConfigDialog.cs
/Banshee.AlarmClock/VolumeFade.cs ../../src/AssemblyInfo.cs
Internal compiler error at ./Banshee.AlarmClock/AlarmClockService.cs(56,32)::
exception caught while emitting MethodBuilder
[AlarmClockService::Banshee.ServiceStack.IExtensionService.Initialize]

Unhandled Exception: System.NullReferenceException: Object reference not set to
an instance of an object
  at Mono.CSharp.DelegateCreation.DoResolve (Mono.CSharp.ResolveContext ec)
[0x00000] in <filename unknown>:0 
  at Mono.CSharp.Expression.Resolve (Mono.CSharp.ResolveContext ec,
ResolveFlags flags) [0x00000] in <filename unknown>:0 
  at Mono.CSharp.Expression.Resolve (Mono.CSharp.ResolveContext ec) [0x00000]
in <filename unknown>:0 
  at Mono.CSharp.New.DoResolve (Mono.CSharp.ResolveContext ec) [0x00000] in
<filename unknown>:0 
  at Mono.CSharp.Expression.Resolve (Mono.CSharp.ResolveContext ec,
ResolveFlags flags) [0x00000] in <filename unknown>:0 
  at Mono.CSharp.Expression.Resolve (Mono.CSharp.ResolveContext ec) [0x00000]
in <filename unknown>:0 
  at Mono.CSharp.Assign.DoResolve (Mono.CSharp.ResolveContext ec) [0x00000] in
<filename unknown>:0 
  at Mono.CSharp.Expression.Resolve (Mono.CSharp.ResolveContext ec,
ResolveFlags flags) [0x00000] in <filename unknown>:0 
  at Mono.CSharp.Expression.Resolve (Mono.CSharp.ResolveContext ec) [0x00000]
in <filename unknown>:0 
  at Mono.CSharp.ExpressionStatement.ResolveStatement (Mono.CSharp.BlockContext
ec) [0x00000] in <filename unknown>:0 
  at Mono.CSharp.StatementExpression.Resolve (Mono.CSharp.BlockContext ec)
[0x00000] in <filename unknown>:0 
  at Mono.CSharp.Block.Resolve (Mono.CSharp.BlockContext ec) [0x00000] in
<filename unknown>:0 
  at Mono.CSharp.Block.Resolve (Mono.CSharp.BlockContext ec) [0x00000] in
<filename unknown>:0 
  at Mono.CSharp.ToplevelBlock.Resolve (Mono.CSharp.FlowBranching parent,
Mono.CSharp.BlockContext rc, Mono.CSharp.ParametersCompiled ip, IMethodData md)
[0x00000] in <filename unknown>:0 


Expected Results:  
no compile error ;-)

Unfortunately I can't provide a small and specific test case here. Probably the
following additional observations will help:

- the source of the example crash can be found here:
http://gitorious.org/banshee-community-extensions/banshee-community-extensions/blobs/master/src/AlarmClock/Banshee.AlarmClock/AlarmClockService.cs
- it happens in different modules of banshee-community-extensions
- it happens randomly - approx. 30% of the time the gmcs is successful, 70% the
compiler error is reported
- however, I have also a system where I cannot reproduce the issue with the
same compiler
- gmcs --version
Mono C# compiler version 2.6.1.0
- I'm setting the severity to critical since an internal compiler error should
never happen and usually indicates a severe problem.

If there is anything else what I can do to help to identify and fix the
problem, please don't hesitate to ask.

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