Index: lucene/core/src/test/org/apache/lucene/util/packed/TestPackedInts.java
===================================================================
--- lucene/core/src/test/org/apache/lucene/util/packed/TestPackedInts.java	(révision 1351170)
+++ lucene/core/src/test/org/apache/lucene/util/packed/TestPackedInts.java	(copie de travail)
@@ -445,7 +445,7 @@
   public void testBulkGet() {
     final int valueCount = 1111;
     final int index = random().nextInt(valueCount);
-    final int len = random().nextInt(valueCount * 2);
+    final int len = _TestUtil.nextInt(random(), 1, valueCount * 2);
     final int off = random().nextInt(77);
 
     for (int bpv = 1; bpv <= 64; ++bpv) {
@@ -479,7 +479,7 @@
   public void testBulkSet() {
     final int valueCount = 1111;
     final int index = random().nextInt(valueCount);
-    final int len = random().nextInt(valueCount * 2);
+    final int len = _TestUtil.nextInt(random(), 1, valueCount * 2);
     final int off = random().nextInt(77);
     long[] arr = new long[off+len];
 
Index: lucene/core/src/java/org/apache/lucene/util/packed/Packed64SingleBlock.java
===================================================================
--- lucene/core/src/java/org/apache/lucene/util/packed/Packed64SingleBlock.java	(révision 1351170)
+++ lucene/core/src/java/org/apache/lucene/util/packed/Packed64SingleBlock.java	(copie de travail)
@@ -140,7 +140,7 @@
 
   @Override
   public int get(int index, long[] arr, int off, int len) {
-    assert len > 0;
+    assert len > 0 : "len must be > 0 (got " + len + ")";
     assert index >= 0 && index < valueCount;
     len = Math.min(len, valueCount - index);
     assert off + len <= arr.length;
@@ -192,7 +192,7 @@
 
   @Override
   public int set(int index, long[] arr, int off, int len) {
-    assert len > 0;
+    assert len > 0 : "len must be > 0 (got " + len + ")";
     assert index >= 0 && index < valueCount;
     len = Math.min(len, valueCount - index);
     assert off + len <= arr.length;
Index: lucene/core/src/java/org/apache/lucene/util/packed/PackedInts.java
===================================================================
--- lucene/core/src/java/org/apache/lucene/util/packed/PackedInts.java	(révision 1351170)
+++ lucene/core/src/java/org/apache/lucene/util/packed/PackedInts.java	(copie de travail)
@@ -244,6 +244,7 @@
     }
 
     public int get(int index, long[] arr, int off, int len) {
+      assert len > 0 : "len must be > 0 (got " + len + ")";
       assert index >= 0 && index < valueCount;
       assert off + len <= arr.length;
 
@@ -263,7 +264,7 @@
     }
 
     public int set(int index, long[] arr, int off, int len) {
-      assert len > 0;
+      assert len > 0 : "len must be > 0 (got " + len + ")";
       assert index >= 0 && index < valueCount;
       len = Math.min(len, valueCount - index);
       assert off + len <= arr.length;