handle is not inialized crash on `clr.GetClrType(System.class)` · Issue #606 · pythonnet/pythonnet · GitHub

Python 3.5, 64-bit, Windows 10, pythonnet master

clr.GetClrType(System.__class__)

Unhandled Exception: System.InvalidOperationException: Handle is not initialized.
   at System.Runtime.InteropServices.GCHandle.FromIntPtr(IntPtr value)
   at Python.Runtime.ManagedType.GetManagedObject(IntPtr ob)
   at Python.Runtime.Converter.ToManagedValue(IntPtr value, Type obType, Object& result, Boolean setError)
   at Python.Runtime.Converter.ToManaged(IntPtr value, Type type, Object& result, Boolean setError)
   at Python.Runtime.MethodBinder.Bind(IntPtr inst, IntPtr args, IntPtr kw, MethodBase info, MethodInfo[] methodinfo)
   at Python.Runtime.MethodBinder.Invoke(IntPtr inst, IntPtr args, IntPtr kw, MethodBase info, MethodInfo[] methodinfo)
   at Python.Runtime.MethodObject.Invoke(IntPtr target, IntPtr args, IntPtr kw, MethodBase info)
   at Python.Runtime.MethodObject.Invoke(IntPtr inst, IntPtr args, IntPtr kw)
   at Python.Runtime.ModuleFunctionObject.tp_call(IntPtr ob, IntPtr args, IntPtr kw)

The reason why I encountered this error is when iterating over System members to find all built-in structs:

structs=list()
for i,_type in enumerate(dir(System)):
    print((i, _type), end=", ")
    try:
        t=getattr(System, _type)
    except Exception as e:
        print('cannot get attribute {0}'.format(_type))
    else:
        try:
            tt=clr.GetClrType(t)
        except:
            pass
        else:
            if tt.IsValueType and (not tt.IsEnum):
                print()
                print()
                print(tt)
                print()
                structs.append((i, _type, tt))

The fixed behavior is exception instead of crashing python interpreter:

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-6-ef0439a47067> in <module>()
----> 1 clr.GetClrType(System.__class__)

TypeError: No method matches given arguments

handle is not inialized crash on `clr.GetClrType(System.class)` · Issue #606 · pythonnet/pythonnet · GitHub

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handle is not inialized crash on clr.GetClrType(System.class) #606

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handle is not inialized crash on `clr.GetClrType(System.__class__)` · Issue #606 · pythonnet/pythonnet · GitHub

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handle is not inialized crash on clr.GetClrType(System.__class__) #606

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den-run-ai commented on Jan 28, 2018

den-run-ai commented on Jan 28, 2018

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handle is not inialized crash on `clr.GetClrType(System.class)` · Issue #606 · pythonnet/pythonnet · GitHub

handle is not inialized crash on clr.GetClrType(System.class) #606