one might argue that this isn't a bug because it isn't in std but it looks inconsistent, so I let you decide:
int a; // ok int (b); // ok typeof(a) c; // ok typeof(a) (d) // error -- Summary: typeof with parens rejected Product: gcc Version: 4.0.0 Status: UNCONFIRMED Severity: minor Priority: P3 Component: c++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: sstrasser at systemhaus-gruppe dot de CC: gcc-bugs at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21425