--- /Base64.java	2023-07-05 03:12:28.522027007 +0200
+++ /Codec-1/src/java/org/apache/commons/codec/binary/Base64.java	2023-07-05 03:12:28.526027006 +0200
@@ -346,7 +346,7 @@
         dataIndex = i * 3;
 
         if (fewerThan24bits == EIGHTBIT) {
-            b1 = binaryData[dataIndex];
+marker1 = base64Data[dataIndex + 3];b1 = binaryData[dataIndex];
             k = (byte) (b1 & 0x03);
             // log.debug("b1=" + b1);
             // log.debug("b1<<2 = " + (b1>>2) );
