fixes GitHub Issue 462 (Internal class issues in the Java 21)

jboss-javassist · Oct 8, 2023 · d6a1f2e · d6a1f2e
1 parent 700be6f
commit d6a1f2e
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/src/main/javassist/bytecode/ConstPool.java b/src/main/javassist/bytecode/ConstPool.java
@@ -671,6 +671,9 @@ public String getStringInfo(int index)
      */
     public String getUtf8Info(int index)
     {
+        if (index == 0)
+            return null;
+
         Utf8Info utf = (Utf8Info)getItem(index);
         return utf.string;
     }
@@ -1200,6 +1203,9 @@ public int addDoubleInfo(double d)
      */
     public int addUtf8Info(String utf8)
     {
+        if (utf8 == null)
+            return 0;
+
         return addItem(new Utf8Info(utf8, numOfItems));
     }