[Bug c++/99729] New: Tweak -Wdeprecated-declarations with namespaces

[mpolacek at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99729

            Bug ID: 99729
           Summary: Tweak -Wdeprecated-declarations with namespaces
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: mpolacek at gcc dot gnu.org
  Target Milestone: ---

namespace [[deprecated]] N { struct S { }; }
using namespace N;
S s;

we should warn about the using-directive, but not also the declaration 
of 's'.

(From https://gcc.gnu.org/pipermail/gcc-patches/2021-March/567148.html.)