--- old/src/java.base/share/classes/java/util/HashMap.java	2019-01-04 10:00:16.574620065 -0800
+++ new/src/java.base/share/classes/java/util/HashMap.java	2019-01-04 10:00:16.278620311 -0800
@@ -445,7 +445,7 @@
                                                initialCapacity);
         if (initialCapacity > MAXIMUM_CAPACITY)
             initialCapacity = MAXIMUM_CAPACITY;
-        if (loadFactor <= 0 || Float.isNaN(loadFactor))
+        if (!(loadFactor > 0))          // also checks for NaNs
             throw new IllegalArgumentException("Illegal load factor: " +
                                                loadFactor);
         this.loadFactor = loadFactor;
@@ -1420,7 +1420,7 @@
         // Read in the threshold (ignored), loadfactor, and any hidden stuff
         s.defaultReadObject();
         reinitialize();
-        if (loadFactor <= 0 || Float.isNaN(loadFactor))
+        if (!(loadFactor > 0))          // also checks for NaNs
             throw new InvalidObjectException("Illegal load factor: " +
                                              loadFactor);
         s.readInt();                // Read and ignore number of buckets