[GitHub] [thrift] dugenkui03 commented on a change in pull request #2125: THRIFT-5190: StringUtils haven't take `(offset + length) > bytes.length` into account

[GitBox <gi...@apache.org>]

dugenkui03 commented on a change in pull request #2125:
URL: https://github.com/apache/thrift/pull/2125#discussion_r428821762



##########
File path: lib/java/src/org/apache/thrift/utils/StringUtils.java
##########
@@ -49,12 +49,10 @@ public static String bytesToHexString(byte[] bytes) {
    * @return hex string.
    */
   public static String bytesToHexString(byte[] bytes, int offset, int length) {
-    if (length < 0) {
-      throw new IllegalArgumentException("Negative length " + length);
-    }
-    if (offset < 0) {
-      throw new IndexOutOfBoundsException("Negative start offset " + offset);
+    if ((offset | length | (offset + length) | (bytes.length - (offset + length))) < 0) {

Review comment:
       > if ((offset | length | (offset + length) | (bytes.length - (offset + length))) < 0)
   
   when length is less than 0, it will throw IllegalArgumentException, such as `int offset=2,length=-1,byteLength=10;`




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