[Mono-bugs] [Bug 513633] New: [SRE] DefineManifestResource does not handle disposed files

bugzilla_noreply at novell.com bugzilla_noreply at novell.com
Tue Jun 16 13:10:17 EDT 2009


           Summary: [SRE] DefineManifestResource does not handle disposed
    Classification: Mono
           Product: Mono: Class Libraries
           Version: unspecified
          Platform: Other
        OS/Version: Other
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: CORLIB
        AssignedTo: rkumpera at novell.com
        ReportedBy: msafar at novell.com
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---

using System;
using System.Reflection;
using System.Reflection.Emit;
using System.Resources;
using System.IO;

class ResourceEmitter
    public static void Main ()
        string assemblyName = "temp";

        AssemblyBuilder asmb = AppDomain.CurrentDomain.DefineDynamicAssembly
(new AssemblyName (assemblyName), AssemblyBuilderAccess.RunAndSave);
        ModuleBuilder mod = asmb.DefineDynamicModule (assemblyName,
assemblyName + ".exe");

        // Embed "resource blob"
        CreateFile ("broken.file");
        for (int i = 0; i < 1000; ++i) {
            using (var fs = new FileStream ("broken.file", FileMode.Open))
                mod.DefineManifestResource ("broken.file", fs,

        asmb.Save (assemblyName + ".exe");

    public static void CreateFile (string filename, params string[] contents)
        using (TextWriter tw = new StreamWriter (filename)) {
            foreach (string s in contents)
                tw.WriteLine (s);

Executed on Mono:
No error

Executed on .NET
Unhandled Exception: System.ObjectDisposedException: Cannot access a closed

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