[Bug c/20655] Attempt to use undefined structure tag triggers no diagnostic

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-04-01 
20:58 -------
If you deference or do an assignment like:

TType *a, *b;
....
b->Pointer = a;

You will either get an error or a warning saying the code is invalid.

Also as mentioned by JSM, it is a way to provide opaque type pointers.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |WONTFIX


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20655