[Bug bootstrap/91972] Bootstrap should use -Wmissing-declarations

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91972

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|build                       |
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2019-10-02
          Component|other                       |bootstrap
     Ever confirmed|0                           |1