[Bug c/48777] duplicate pointers to empty structs passed as arguments to function

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48777

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2011-04-26 
19:20:31 UTC ---
Considering empty structs are a GNU extension, this could be considered
correct.