src/hotspot/share/prims/jvmtiTagMap.cpp

*** 57,66 ****
--- 57,69 ----
  #include "runtime/threadSMR.hpp"
  #include "runtime/vframe.hpp"
  #include "runtime/vmThread.hpp"
  #include "runtime/vm_operations.hpp"
  #include "utilities/macros.hpp"
+ #if INCLUDE_ZGC
+ #include "gc/z/zGlobals.hpp"
+ #endif
  
  // JvmtiTagHashmapEntry
  //
  // Each entry encapsulates a reference to the tagged object
  // and the tag value. In addition an entry includes a next pointer which
*** 176,185 ****
--- 179,190 ----
      }
    }
  
    // hash a given key (oop) with the specified size
    static unsigned int hash(oop key, int size) {
+     ZGC_ONLY(assert(ZAddressMetadataShift >= sizeof(unsigned int) * BitsPerByte, "cast removes the metadata bits");)
+ 
      // shift right to get better distribution (as these bits will be zero
      // with aligned addresses)
      unsigned int addr = (unsigned int)(cast_from_oop<intptr_t>(key));
  #ifdef _LP64
      return (addr >> 3) % size;