[Bug c/85318] -Wc90-c99-compat does not warn about for loop initial declarations

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85318

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |diagnostic, easyhack
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2018-04-11
     Ever confirmed|0                           |1

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed.

This should not be hard to add.
The error message while compiling for C90 is emitted from check_for_loop_decls
which should be easy to add a warning there when -Wc90-c99-compat is turned on.