ArrayIndexOutOfBoundsException being thrown.

[thisissvikas]

Seeing this exception when running the javacg-0.1-SNAPSHOT-static.jar on my project's jar.

Can you please explain under what scenario can this be coming?

[nevesnunes]

I was able to reproduce this issue with the following:

• Method = static Class[] getClassesFromContextPath(String contextPath, ClassLoader classLoader) throws Exceptions: javax.xml.bind.JAXBException
• Class =javax.xml.bind.ModuleUtil extends java.lang.Object
• Jar = ./jakarta.xml.bind-api-2.3.3.jar
• Bytecode line = invokedynamic 0:makeConcatWithConstants (Ljava/lang/String;)Ljava/lang/String; (10)

The retrieveCalls() method expects bootstrap methods to always contain more than one argument, but in this case only one is parsed, as seen in the objects contained in boots variable:

[BootstrapMethod(137, 1, [138]), BootstrapMethod(137, 1, [155]), BootstrapMethod(137, 1, [167])]

My workaround is to ignore these cases:

--- a/src/main/java/gr/gousiosg/javacg/stat/DynamicCallManager.java
+++ b/src/main/java/gr/gousiosg/javacg/stat/DynamicCallManager.java
@@ -81,12 +81,14 @@ public class DynamicCallManager {
         while (matcher.find()) {
             int bootIndex = Integer.parseInt(matcher.group(1));
             BootstrapMethod bootMethod = boots[bootIndex];
+            if (bootMethod.getBootstrapArguments().length > 1) {
                    int calledIndex = bootMethod.getBootstrapArguments()[CALL_HANDLE_INDEX_ARGUMENT];
                    String calledName = getMethodNameFromHandleIndex(cp, calledIndex);
                    String callerName = method.getName();
                    dynamicCallers.put(calledName, callerName);
             }
         }
+    }