[Bug rtl-optimization/56181] [4.8 Regression] ICE in verify_loop_structure, at cfgloop.c:1581 with -ftracer

[mpolacek at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56181

--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> 2013-02-05 15:53:44 UTC ---
Or maybe tracer shouldn't duplicate BB between headers, i.e. BB whose successor
and predecessor is a header.  Testing a patch for that...