src/java.base/share/classes/java/util/HashMap.java

imported patch loadFactor-isNaN

*** 443,453 ****
          if (initialCapacity < 0)
              throw new IllegalArgumentException("Illegal initial capacity: " +
                                                 initialCapacity);
          if (initialCapacity > MAXIMUM_CAPACITY)
              initialCapacity = MAXIMUM_CAPACITY;
!         if (loadFactor <= 0 || Float.isNaN(loadFactor))
              throw new IllegalArgumentException("Illegal load factor: " +
                                                 loadFactor);
          this.loadFactor = loadFactor;
          this.threshold = tableSizeFor(initialCapacity);
      }
--- 443,453 ----
          if (initialCapacity < 0)
              throw new IllegalArgumentException("Illegal initial capacity: " +
                                                 initialCapacity);
          if (initialCapacity > MAXIMUM_CAPACITY)
              initialCapacity = MAXIMUM_CAPACITY;
!         if (!(loadFactor > 0))          // also checks for NaNs
              throw new IllegalArgumentException("Illegal load factor: " +
                                                 loadFactor);
          this.loadFactor = loadFactor;
          this.threshold = tableSizeFor(initialCapacity);
      }
*** 1418,1428 ****
      private void readObject(java.io.ObjectInputStream s)
          throws IOException, ClassNotFoundException {
          // Read in the threshold (ignored), loadfactor, and any hidden stuff
          s.defaultReadObject();
          reinitialize();
!         if (loadFactor <= 0 || Float.isNaN(loadFactor))
              throw new InvalidObjectException("Illegal load factor: " +
                                               loadFactor);
          s.readInt();                // Read and ignore number of buckets
          int mappings = s.readInt(); // Read number of mappings (size)
          if (mappings < 0)
--- 1418,1428 ----
      private void readObject(java.io.ObjectInputStream s)
          throws IOException, ClassNotFoundException {
          // Read in the threshold (ignored), loadfactor, and any hidden stuff
          s.defaultReadObject();
          reinitialize();
!         if (!(loadFactor > 0))          // also checks for NaNs
              throw new InvalidObjectException("Illegal load factor: " +
                                               loadFactor);
          s.readInt();                // Read and ignore number of buckets
          int mappings = s.readInt(); // Read number of mappings (size)
          if (mappings < 0)