Added a test for slice bounds out of range

roaring/fuzz_test.go

@@ -0,0 +1,23 @@
+package roaring
+
+import ( 
+	"testing"
+)
+
+func TestUnmarshalBinary(t *testing.T) {
+	b := NewBitmap()
+	confirmedCrashers := []struct {
+		cr []byte
+	} {
+		{cr : []byte(":000000")},
+		{cr : []byte("<000000000000000")},
+	}
+
+	for _, crash := range confirmedCrashers {
+		err := b.UnmarshalBinary(crash.cr)
+		if err != nil {
+			t.Error("Known crasher failed.")
+		}
+	}
+	
+}