*** old/src/share/vm/runtime/unhandledOops.hpp	Wed Jan 15 01:43:07 2014
--- new/src/share/vm/runtime/unhandledOops.hpp	Wed Jan 15 01:43:07 2014

*** 32,42 ****
--- 32,42 ----
  // The design is that when an oop is declared on the stack as a local
  // variable, the oop is actually a C++ struct with constructor and
  // destructor.  The constructor adds the oop address on a list
  // off each thread and the destructor removes the oop.  At a potential
  // safepoint, the stack addresses of the local variable oops are trashed
! // with a recognizeable value.  If the local variable is used again, it
! // with a recognizable value.  If the local variable is used again, it
  // will segfault, indicating an unsafe use of that oop.
  // eg:
  //    oop o;    //register &o on list
  //    funct();  // if potential safepoint - causes clear_naked_oops()
  //              // which trashes o above.