[Bug middle-end/15855] [3.4/4.0 Regression] g++ crash with -O2 and -O3 on input file

[pinskia at gcc dot gnu dot org]

-- 
Bug 15855 depends on bug 18587, which changed state.

Bug 18587 Summary: build_v_may_defs and build_vuses can be improved when adding
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18587

           What    |Old Value                   |New Value
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15855