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src/share/vm/services/virtualMemoryTracker.hpp

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rev 12121 : 8167650: NMT should check for invalid MEMFLAGS
Reviewed-by: dholmes, mockner

@@ -91,10 +91,11 @@
   VirtualMemory  _virtual_memory[mt_number_of_types];
 
  public:
   inline VirtualMemory* by_type(MEMFLAGS flag) {
     int index = NMTUtil::flag_to_index(flag);
+    assert(index >= 0 && index < mt_number_of_types, "Index out of bound.");
     return &_virtual_memory[index];
   }
 
   inline VirtualMemory* by_index(int index) {
     assert(index >= 0, "Index out of bound");
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