This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21 Core Issues List revision 115d. See http://www.open-std.org/jtc1/sc22/wg21/ for the official list.
2024-10-26
Current implementations reject an example like:
namespace X { int n; } namespace A = X; namespace { namespace A = X; } int k = A::n;
This seems curious, since a similar example with using-declarations or with alias-declarations is valid.
Rationale (November, 2014):
The current wording of the Standard makes this example ambiguous, and CWG did not find the similarities mentioned compelling enough to warrant a change.