[Bug c++/88637] New: GCC should mention C++17 in warnings, not C++1z

[david.bolvansky at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88637

            Bug ID: 88637
           Summary: GCC should mention C++17 in warnings, not C++1z
           Product: gcc
           Version: 8.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: david.bolvansky at gmail dot com
  Target Milestone: ---

GCC 8.2 Ubuntu build

Code from:
http://coliru.stacked-crooked.com/a/d59814e0765c3499

g++ -O3 file.cpp

Now:
warning: pack expansion in using-declaration only available with -std=c++1z or
-std=gnu++1z

Expected:
warning: pack expansion in using-declaration only available with -std=c++17