[Bug libitm/51855] improve calculation of stack bottom in libitm's undolog

[torvald at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51855

torvald at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P4
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2012-01-13
   Target Milestone|---                         |4.8.0
     Ever Confirmed|0                           |1