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I'm adding support for instrumenting invokedynamic in a concolic engine and the way we currently instrument is by using a custom classloader that finds the resource related to that class in the class path but as the lambda is a synthetic class created on the fly it's not actually there.

Do you know how to instrument invoke dynamic generated classes? I've seen that using agents may be an option but i want to be sure that i can't reuse what I already have.

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    Those generated classes are simple, and just invoke an other method that you probably did already implement. Commented Dec 1, 2020 at 7:44
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    You can’t instrument those generated classes, neither statically nor using agents, and there’s no point in trying. The body of the lambda expression is not part of the generated class. Commented Dec 1, 2020 at 9:16
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