[Bug c/70485] Duplicate typedef results in missing debug info

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70485

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
      Known to work|                            |6.0
         Resolution|---                         |FIXED
      Known to fail|                            |4.7.4, 5.3.0

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
This is fixed in GCC 6 but still broken in GCC 5.  GCC 4.5 complained:

t.c:2: error: redefinition of typedef ‘yyx_handle’
t.c:1: error: previous declaration of ‘yyx_handle’ was here

since GCC 4.6 we accept the code and do not emit the typedef in debug info.

Thus not a regression, fixed.