------- Comment #1 from gcc at twistedsquare dot com 2009-01-21 17:03 ------- I tried fiddling with various optimisations. With -O1 the code works fine. With -O2 the code breaks. With -O2 -fno-tree-vrp it works fine again, so that may help in finding the bug.
-- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38929