[IronPython] Compilation error

Dino Viehland dinov at exchange.microsoft.com
Thu Oct 18 06:53:24 CEST 2007

Looks like the internal bug got closed as By Design as well, I've reactivated it.  Maybe it's not clear to them that their making a distinction based upon what assembly the struct is defined in.  I added the below repro snippet to the internal bug:

using System;
using System.Reflection;
class foo {
    public void bar(out ParameterModifier x) {


using System;
class foo {
    public void bar(out ParameterModifier x) {

// ParameterModifier from mscorlib has the same members:
struct ParameterModifier
   private bool[] _byRef;

The 1st doesn't require assignment yet the 2nd does.

-----Original Message-----
From: users-bounces at lists.ironpython.com [mailto:users-bounces at lists.ironpython.com] On Behalf Of Sanghyeon Seo
Sent: Wednesday, October 17, 2007 6:58 PM
To: Discussion of IronPython
Subject: Re: [IronPython] Compilation error

2007/10/6, Dino Viehland <dinov at exchange.microsoft.com>:
> BTW my simple repro is bogus - it contains no members and section 5.3 of the C# spec defines value types as being definitely assigned when all their members are assigned.  The real issue seems to be when the value-type is defined in another assembly and all the members are private.  Once those conditions are met csc then doesn't require the assignment.
> I'm still waiting for a response on that last bit.

Gert Driesen from Mono project reported this as Feedback 304489 at
Microsoft Connect.

After 3 days, it was marked "Resolved (By Design)", without any
explanation. I'm still curious.

Seo Sanghyeon
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