fixing issue 467

roaring_test.go

@@ -3236,3 +3236,77 @@ func BenchmarkArrayUnionThreshold(b *testing.B) {
 		})
 	}
 }
+
+func TestIssue467CaseSmall(t *testing.T) {
+	b := New()
+	b.AddRange(0, 16385)
+	b.AddRange(16385, 20482)
+	b.AddRange(20482, 27862)
+	b.AddRange(27862, 44247)
+	b.AddRange(45576, 61961)
+	b.AddRange(61961, 66058)
+	b.AddRange(66058, 67247)
+	b.AddRange(68819, 73028)
+	b.AddRange(73028, 89413)
+	b.AddRange(92266, 108651)
+	b.AddRange(108651, 113772)
+	b.AddRange(113772, 118757)
+	b.AddRange(118757, 132098)
+	b.RunOptimize()
+	require.NoError(t, b.Validate())
+}
+
+func TestIssue467CaseLarge(t *testing.T) {
+	b := New()
+	b.RemoveRange(0, 16385)
+	b.RemoveRange(16385, 20482)
+	b.RemoveRange(20482, 27862)
+	b.AddRange(0, 16385)
+	b.AddRange(16385, 20482)
+	b.AddRange(20482, 27862)
+	b.RemoveRange(27862, 44247)
+	b.RemoveRange(44247, 45576)
+	b.RemoveRange(45576, 61961)
+	b.RemoveRange(61961, 66058)
+	b.RemoveRange(66058, 67247)
+	b.AddRange(27862, 44247)
+	b.AddRange(45576, 61961)
+	b.AddRange(44247, 45576)
+	b.AddRange(61961, 66058)
+	b.AddRange(66058, 67247)
+	b.RemoveRange(67247, 68819)
+	b.RemoveRange(68819, 73028)
+	b.RemoveRange(73028, 89413)
+	b.RemoveRange(89413, 92266)
+	b.RemoveRange(92266, 108651)
+	b.RemoveRange(108651, 113772)
+	b.RemoveRange(113772, 118757)
+	b.AddRange(68819, 73028)
+	b.AddRange(73028, 89413)
+	b.AddRange(92266, 108651)
+	b.AddRange(89413, 92266)
+	b.AddRange(108651, 113772)
+	b.AddRange(113772, 118757)
+	b.RemoveRange(118757, 132098)
+	b.AddRange(118757, 132098)
+	b.RemoveRange(132098, 137544)
+	b.AddRange(132098, 137544)
+	b.RemoveRange(137544, 153929)
+	b.RemoveRange(153929, 155151)
+	b.RemoveRange(155151, 162078)
+	b.RemoveRange(162078, 167119)
+	b.RemoveRange(167119, 181012)
+	b.RemoveRange(181012, 197397)
+	b.RemoveRange(197397, 201244)
+	b.RemoveRange(201244, 217629)
+	b.RemoveRange(217629, 222750)
+	b.RemoveRange(222750, 227708)
+	b.RemoveRange(227708, 235777)
+	b.RemoveRange(235777, 252162)
+	b.RemoveRange(252162, 256259)
+	b.AddRange(252162, 256259)
+	b.AddRange(227708, 235777)
+	b.AddRange(235777, 252162)
+	b.RunOptimize()
+	require.NoError(t, b.Validate())
+}

runcontainer.go

@@ -1504,8 +1504,8 @@ func (iv interval16) isNonContiguousDisjoint(b interval16) bool {
 		return false
 	}
 
-	nonContiguous1 := iv.start == b.last()+1 || iv.last() == b.start+1
-	nonContiguous2 := b.start == iv.last()+1 || b.last() == iv.start+1
+	nonContiguous1 := uint32(iv.start) == uint32(b.last())+1 || uint32(iv.last()) == uint32(b.start)+1
+	nonContiguous2 := uint32(b.start) == uint32(iv.last())+1 || uint32(b.last()) == uint32(iv.start)+1
 	if nonContiguous1 || nonContiguous2 {
 		return false
 	}