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src/share/vm/gc/g1/g1ConcurrentMark.cpp

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rev 13486 : [mq]: add_fix_calls

@@ -198,11 +198,11 @@
   // wraparound of _hwm.
   if (_hwm >= _chunk_capacity) {
     return NULL;
   }
 
-  size_t cur_idx = Atomic::add(1, &_hwm) - 1;
+  size_t cur_idx = Atomic::add(1u, &_hwm) - 1;
   if (cur_idx >= _chunk_capacity) {
     return NULL;
   }
 
   TaskQueueEntryChunk* result = ::new (&_base[cur_idx]) TaskQueueEntryChunk;
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