[Bug tree-optimization/52979] [4.7/4.8 Regression] likely wrong code bug w/packed bitfields

[regehr at cs dot utah.edu]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52979

--- Comment #3 from John Regehr <regehr at cs dot utah.edu> 2012-04-23 17:47:42 
UTC ---
I'll see if I can find another test case for this one.