[Bug libstdc++/87061] [9 Regression] regex cannot be compiled with -std=c++1z -D_GLIBCXX_USE_CXX11_ABI=0

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87061

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2018-08-22
           Assignee|unassigned at gcc dot gnu.org      |redi at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Those std::pmr type aliases should only be defined for the new ABI, because the
old std::string doesn't support C++11 allocators.