[Bug libstdc++/103877] libstdc++ docs give a bad recommendation for printing C++ defines

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103877

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |documentation
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2021-12-31
     Ever confirmed|0                           |1
          Component|web                         |libstdc++

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Confirmed.

"g++ -E -dM -x c++ /dev/null" is simpler.