*** old/src/share/vm/gc_implementation/g1/g1GCPhaseTimes.hpp	Mon Jan 14 21:55:29 2013
--- new/src/share/vm/gc_implementation/g1/g1GCPhaseTimes.hpp	Mon Jan 14 21:55:29 2013

*** 33,42 ****
--- 33,44 ----
    T*          _data;
    uint        _length;
    const char* _print_format;
    bool        _print_sum;
  
+   NOT_PRODUCT(static const T _uninitialized;)
+ 
    // We are caching the sum and average to only have to calculate them once.
    // This is not done in an MT-safe way. It is intetened to allow single
    // threaded code to call sum() and average() multiple times in any order
    // without having to worry about the cost.
    bool   _has_new_data;