[Mono-bugs] [Bug 615553] Marshalling a union results in a crash

[bugzilla_noreply at novell.com]

http://bugzilla.novell.com/show_bug.cgi?id=615553

http://bugzilla.novell.com/show_bug.cgi?id=615553#c1


Zoltan Varga <vargaz at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |vargaz at gmail.com

--- Comment #1 from Zoltan Varga <vargaz at gmail.com> 2010-06-19 01:16:41 UTC ---
This:

[StructLayout(LayoutKind.Explicit)]
public struct foobar_t {
     [FieldOffset(0)] public uint foo;
     [FieldOffset(0)] public bar_t bar;
};

will not do what you want it to do, since both fields have the same offset,
the runtime marshaller will overwrite 'foo' with 'bar' when marshalling the
structure from managed to native code, or vice versa.

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