Following the resolution of Bug 4463 (Missing rules for misuse of the xmlns namespace), I think that:

K2-ComputeConAttr-42 should expect XQST00070
K2-ComputeConAttr-43 should expect XQST00070
namespaceDecl-3 should expect XQST00070

(:*******************************************************:)
(: Test: K2-ComputeConAttr-42                            :)
(: Written by: Frans Englich                             :)
(: Date: 2007-11-22T11:31:21+01:00                       :)
(: Purpose: It's not allowed to bind the xmlns to any prefix with computed attri
bute constructors. :)
(:*******************************************************:)
declare namespace prefix = "http://www.w3.org/2000/xmlns/";
    <e>{attribute prefix:localName {"content"}}</e>