[Bug c/52085] sizeof packed enum can vary without warning depending on include order

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52085

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-02-02 
06:14:55 UTC ---
http://gcc.gnu.org/onlinedocs/gcc-4.6.2/gcc/Incomplete-Enums.html#Incomplete-Enums

>From the sound of it, the declaration using the incomplete enum should have
been rejected.