I am sorry, this is a question about java bytecode about byte-buddy

[raphw]

ChatGTP is pretty much correct. There's no need to limit the scope here as the assignment can never yield an exception. I assume that it's a simple simplification.

[jiangyunpeng]

Thanks a lot for the detailed response.

Actually, i used ByteBuddy and asm to develop a online debug tools.

I decompile user's class to java source code, and user can debug at any source code line. We will record every variable before user debug code line . for example below code ,if user debug at L15, we will record the value of 'a' and 'b' variables.

L11    public void sum2() {
L12        int a = 25;
L13        try {
L14            int b = 8;
L15            if (a > 20) {
L16                int k = a + b;
L17                System.out.println("k=" + k);
L18            }
L19        } catch (Exception e) {
L20            e.printStackTrace();
L21        }
L22    }

But if user debug at L20. we will generate error bytecode base ' LocalVariableTable ' , Because our bytecode will try to record variable 'b' at catch statement but actually it can't be accessed.

So could you give some advice to me for this case?

[jiangyunpeng]

i think may be need parse source code manually for resolve this case

[raphw]

I would argue that it would be possible to access the value using the Java debugger.

[jiangyunpeng]

Thanks , Have a nice day.