[Mono-bugs] [Bug 356938] New: Dynamic Assemblies: GetTypes (): System. OverflowException : Number overflow

[bugzilla_noreply at novell.com]

https://bugzilla.novell.com/show_bug.cgi?id=356938


           Summary: Dynamic Assemblies: GetTypes ():
                    System.OverflowException : Number overflow
           Product: Mono: Runtime
           Version: 1.2.6
          Platform: 64bit
        OS/Version: Windows Vista
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: misc
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: gordon.milligan at realtimeworlds.com
         QAContact: mono-bugs at lists.ximian.com
          Found By: Other


Created an attachment (id=192148)
 --> (https://bugzilla.novell.com/attachment.cgi?id=192148)
Example project to create a dynamic assembly and show lack of access to types
and exception

We are having an issue with our application where when we create a dynamic
assembly and then later try to access its types, using GetTypes, that we get a
System.OverflowException : Number overflow error if the assembly that has been
created is in memory or if we save it out to disk and then reload it then we
don't get any type info.

The callstack for the exception is:

Unhandled Exception: System.OverflowException: Number overflow.
  at (wrapper managed-to-native) System.Reflection.Module:InternalGetTypes ()
  at System.Reflection.Module.GetTypes () [0x00000]
  at mono_bug_createDynamicAssembly.CreateDynamicAssembly.DumpAssemblyInfo
(Syst
em.Reflection.Module[] modules) [0x00000]
  at
mono_bug_createDynamicAssembly.CreateDynamicAssembly.CreateDynamicAssemblyB
yInjectingIL () [0x00000]
  at mono_bug_createDynamicAssembly.Program.Main (System.String[] args)
[0x00000
]


I have created a small app to demonstrate this.  The source code and VS2005
project file for this are attached. It demonstrates that I don't get access to
the DLL's types when it is loaded in and also the crash when access the
assemblies types in memory.

I am compiling the project using VS2005 and then running it under mono-1.2.6 on
Windows Vista. The output below indicates two tests, TEST1 and 2 which are
labeled in the code.

The output from the Microsoft CLR is:

---
The result of adding the inputted values is: 3
---

TEST1:
 Assembly loaded from disk (IL Injection):
Module: test_assembly.dll
m.GetTypes ==  No. Entries: 0
Module: myDynamicModule.dll
m.GetTypes ==  No. Entries: 1
        Type: myDynamicModuleType
                Method: testDynamic
                Method: GetType
                Method: ToString
                Method: Equals
                Method: GetHashCode

TEST2:
 Assembly in memory (IL Injection):
Module: <In Memory Module>
m.GetTypes ==  No. Entries: 0
Module: <In Memory Module>
m.GetTypes ==  No. Entries: 1
        Type: myDynamicModuleType
                Method: testDynamic
                Method: GetType
                Method: ToString
                Method: Equals
                Method: GetHashCode

Output from MONO runtime:

TEST1:
 Assembly loaded from disk (IL Injection):
Module: test_assembly.dll
m.GetTypes ==  No. Entries: 0
Module: myDynamicModule.dll
m.GetTypes ==  No. Entries: 0

TEST2:
 Assembly in memory (IL Injection):
Module: myDynamicAssembly

Unhandled Exception: System.OverflowException: Number overflow.
  at (wrapper managed-to-native) System.Reflection.Module:InternalGetTypes ()
  at System.Reflection.Module.GetTypes () [0x00000]
  at mono_bug_createDynamicAssembly.CreateDynamicAssembly.DumpAssemblyInfo
(Syst
em.Reflection.Module[] modules) [0x00000]
  at
mono_bug_createDynamicAssembly.CreateDynamicAssembly.CreateDynamicAssemblyB
yInjectingIL () [0x00000]
  at mono_bug_createDynamicAssembly.Program.Main (System.String[] args)
[0x00000
]


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