[Bug c++/89875] New: invalid typeof reference to a member of an incomplete struct accepted at function scope

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89875

            Bug ID: 89875
           Summary: invalid typeof reference to a member of an incomplete
                    struct accepted at function scope
           Product: gcc
           Version: 9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: msebor at gcc dot gnu.org
  Target Milestone: ---

The following ill-formed test case modified from bug 66548 is still accepted by
GCC 9:

$ cat u.C && gcc -S -Wall -Wextra u.C

void f ()
{
  __typeof__ (Meow.purr) d;
}
u.C: In function ‘void f()’:
u.C:5:26: warning: unused variable ‘d’ [-Wunused-variable]
    5 |   __typeof__ (Meow.purr) d;
      |                          ^