------- Comment #2 from pinskia at gcc dot gnu dot org 2009-03-03 22:55 ------- Actually if you do inlining you end up with the cast happening to &node in this case. Your reduced testcase is undefined because nothing can change y.prev between the constructor and the call to back so you end up with accessing a Node_base via a Node and there is no such data there.
The original testcase might not be, I have to look into the preprocessed source and the tree dumps to figure out if you reduced the testcase too far or really the original testcase is just undefined. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39358
