[Bug c/18183] New: Warning when supposedly unused parameters are used

[terra at gnome dot org]

It would be nice to get a warning for the code below when bar is used.
Using something documented as unused is likely a bug.

void
foo (int __attribute__((unused)) bar)
{
  bar++;
}

> gcc-3.4 -W -Wunused -Wall -O2 -c ~/foo.c
>

-- 
           Summary: Warning when supposedly unused parameters are used
           Product: gcc
           Version: 3.4.0
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P2
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: terra at gnome dot org
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: sparc-sun-solaris2.8
  GCC host triplet: sparc-sun-solaris2.8
GCC target triplet: sparc-sun-solaris2.8


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18183