[Bug c++/84030] Name lookup in presence of namespace

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84030

Martin Sebor <msebor at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2018-01-26
                 CC|                            |msebor at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
Confirmed.  All versions of GCC all the way to 4.1 accept the code so it's not
a recent regression.

EDG eccp 4.13 prints the following warning:

"pr84030.C", line 20: warning: ambiguous class member reference -- type
          "N_::A_::A_" (declared at line 5) used in preference to class "A_"
          (declared at line 3)
    int b = a.operator A_().g();
                       ^

I don't know if the standard requires an error for the ambiguity but if not, it
would seem appropriate to at least issue a warning.