Crash: NullReferenceException on code completion

While going through the D book, I encountered a fatal error with the code completion.

This is the D code that triggers the error:

bool binarySearch(T)(T[] input, T value) {
while (!input.empty) {
auto i = input.length / 2;
auto mid = input[i];
if (mid > value) input = input[0 .. i];
else if (mid < value) input = input[i + 1 .. $];
else return true;
}
return false;
}

If you delete the ".empty" after "input" and try to add a period, it will crash with this error:

See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************
System.NullReferenceException: Object reference not set to an instance of an object.
at D_Parser.DCodeResolver.ResolveTypeDeclarations(List`1 ImportCache, DBlockStatement CurrentlyScopedBlock, TypeDeclaration IdentifierList)
at D_IDE.CodeCompletion.D_IDECodeResolver.ResolveTypeDeclarations(List`1 GlobalModules, List`1 LocalModules, DBlockStatement CurrentlyScopedBlock, TypeDeclaration IdentifierList)
at D_IDE.DCodeCompletionProvider.GenerateCompletionData(String fn, TextArea ta, Char ch)
at D_IDE.DCodeCompletionWindow.ShowCompletionWindow(Form parent, TextEditorControl control, String fileName, ICompletionDataProvider completionDataProvider, Char firstChar)
at D_IDE.DocumentInstanceWindow.TextAreaKeyEventHandler(Char key)
at ICSharpCode.TextEditor.TextArea.HandleKeyPress(Char ch)
at ICSharpCode.TextEditor.TextArea.SimulateKeyPress(Char ch)
at ICSharpCode.TextEditor.TextArea.OnKeyPress(KeyPressEventArgs e)
at System.Windows.Forms.Control.ProcessKeyEventArgs(Message& m)
at System.Windows.Forms.Control.ProcessKeyMessage(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

************** Loaded Assemblies **************
mscorlib
Assembly Version: 4.0.0.0
Win32 Version: 4.0.30319.1 (RTMRel.030319-0100)
CodeBase: file:///c:/WINDOWS/Microsoft.NET/Framework/v4.0.30319/mscorlib.dll
----------------------------------------
D-IDE
Assembly Version: 1.0.3991.40605
Win32 Version: 1.0.5.0
CodeBase: file:///C:/tools/d/D-IDE/D-IDE.exe
----------------------------------------
System.Windows.Forms
Assembly Version: 4.0.0.0
Win32 Version: 4.0.30319.1 built by: RTMRel
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Windows.Forms/v4.0_4.0.0.0__b77a5c561934e089/System.Windows.Forms.dll
----------------------------------------
System.Drawing
Assembly Version: 4.0.0.0
Win32 Version: 4.0.30319.1 built by: RTMRel
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Drawing/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------
System
Assembly Version: 4.0.0.0
Win32 Version: 4.0.30319.1 built by: RTMRel
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System/v4.0_4.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
Microsoft.VisualBasic
Assembly Version: 10.0.0.0
Win32 Version: 10.0.30319.1 built by: RTMRel
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/Microsoft.VisualBasic/v4.0_10.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualBasic.dll
----------------------------------------
System.Core
Assembly Version: 4.0.0.0
Win32 Version: 4.0.30319.1 built by: RTMRel
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Core/v4.0_4.0.0.0__b77a5c561934e089/System.Core.dll
----------------------------------------
System.Configuration
Assembly Version: 4.0.0.0
Win32 Version: 4.0.30319.1 (RTMRel.030319-0100)
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Configuration/v4.0_4.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll
----------------------------------------
System.Xml
Assembly Version: 4.0.0.0
Win32 Version: 4.0.30319.1 built by: RTMRel
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Xml/v4.0_4.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------
System.Runtime.Remoting
Assembly Version: 4.0.0.0
Win32 Version: 4.0.30319.1 (RTMRel.030319-0100)
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/System.Runtime.Remoting/v4.0_4.0.0.0__b77a5c561934e089/System.Runtime.Remoting.dll
----------------------------------------
WeifenLuo.WinFormsUI.Docking
Assembly Version: 2.2.3633.27487
Win32 Version: 2.2.0.0
CodeBase: file:///C:/tools/d/D-IDE/WeifenLuo.WinFormsUI.Docking.DLL
----------------------------------------
D_Parser
Assembly Version: 1.0.0.0
Win32 Version: 1.0.0.0
CodeBase: file:///C:/tools/d/D-IDE/D_Parser.DLL
----------------------------------------
ICSharpCode.TextEditor
Assembly Version: 3.2.0.5698
Win32 Version: 3.2.0.5698
CodeBase: file:///C:/tools/d/D-IDE/ICSharpCode.TextEditor.DLL
----------------------------------------
ICSharpCode.SharpDevelop.Dom
Assembly Version: 3.2.0.5698
Win32 Version: 3.2.0.5698
CodeBase: file:///C:/tools/d/D-IDE/ICSharpCode.SharpDevelop.Dom.DLL
----------------------------------------
Microsoft.mshtml
Assembly Version: 7.0.3300.0
Win32 Version: 7.0.3300.0
CodeBase: file:///C:/WINDOWS/assembly/GAC/Microsoft.mshtml/7.0.3300.0__b03f5f7f11d50a3a/Microsoft.mshtml.dll
----------------------------------------
Accessibility
Assembly Version: 4.0.0.0
Win32 Version: 4.0.30319.1 built by: RTMRel
CodeBase: file:///C:/WINDOWS/Microsoft.Net/assembly/GAC_MSIL/Accessibility/v4.0_4.0.0.0__b03f5f7f11d50a3a/Accessibility.dll
----------------------------------------
DebugEngineWrapper
Assembly Version: 1.0.3991.40538
Win32 Version:
CodeBase: file:///C:/tools/d/D-IDE/DebugEngineWrapper.DLL
----------------------------------------

************** JIT Debugging **************
To enable just-in-time (JIT) debugging, the .config file for this
application or computer (machine.config) must have the
jitDebugging value set in the system.windows.forms section.
The application must also be compiled with debugging
enabled.

For example:

<configuration>
<system.windows.forms jitDebugging="true" />
</configuration>

When JIT debugging is enabled, any unhandled exception
will be sent to the JIT debugger registered on the computer
rather than be handled by this dialog box.