[Bug c++/78842] "error: declaration of 'bool icase' shadows a parameter" should be warning

["redi at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78842

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |RESOLVED
         Resolution|---                         |INVALID

--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Presumably you had a local variable 'icase' in your function, because you
wouldn't get a diagnostic saying "shadows a parameter" for a global variable.
That's impossible.

It's an error if the local variable is in the outermost block of the function,
because it declares two variables of the same name in the same scope:

void find_vsizet(bool icase=false)
{
        bool icase = false;  // error
        {
                bool icase = false;  // ok here, only a warning
        }
}