[Bug c++/81787] [5/6/7/8 Regression] `#pragma GCC diagnostic warning "-fpermissive"` no longer works since gcc 4.8

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81787

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |diagnostic
   Target Milestone|---                         |5.5
            Summary|`#pragma GCC diagnostic     |[5/6/7/8 Regression]
                   |warning "-fpermissive"` no  |`#pragma GCC diagnostic
                   |longer works since gcc 4.8  |warning "-fpermissive"` no
                   |                            |longer works since gcc 4.8