This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21 Core Issues List revision 118e. See http://www.open-std.org/jtc1/sc22/wg21/ for the official list.

2025-11-05

812. Duplicate names in inline namespaces

[Voted into WP at March, 2010 meeting.]

It is not clear from the specification in 9.9.2 [namespace.def] paragraph 8 how a declaration in an inline namespace should be handled if the name is the same as one in the containing namespace or in an parallel inline namespace. For example:

  namespace Q {
    inline namespace V1 {
      int i;
      int j;
    }
    inline namespace V2 {
      int j;
    }
    int i;
  }
  int Q::i = 1;   // Q::i or Q::V1::i?
  int Q::j = 2;   // Q::V1::j or Q::V2::j?

Proposed resolution (July, 2009):

This issue is resolved by the resolution of issue 861.