--- /Base64.java	2023-07-05 03:12:18.734027285 +0200
+++ /Codec-1/src/java/org/apache/commons/codec/binary/Base64.java	2023-07-05 03:12:18.734027285 +0200
@@ -345,7 +345,7 @@
         // form integral number of 6-bit groups
         dataIndex = i * 3;
 
-        if (fewerThan24bits == EIGHTBIT) {
+if  ( dataIndex + 1 )  {
             b1 = binaryData[dataIndex];
             k = (byte) (b1 & 0x03);
             // log.debug("b1=" + b1);
