Throw NoSuchFieldException when call getInt() method about btrace HOT 5 CLOSED

@jbachorik Hello, My friend can you help me.

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Sorry for long time to reply. My main job was keeping me busy ...

This seems like a bug in the code resolving the fields by reflection.

The problem here is that the actual class name of the intercepted instance will be HelloWorldEx as the HelloWorld class is abstract and can not be instantiated. However, the intercepted method callA() is defined in HelloWorld and will be matched and instrumented because of that.

The reason for NoSuchFieldxception is the fact that the field field is declared in HelloWorld and the getDeclaredField() method used by BTrace does not perform search in type hierarchy, therefore missing the field declared in the base class.
I think this should be fixed but in the meantime you can use

Field fld = field("HelloWorld", "field");
int value = getInt(fld, thiz);
...

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In fact, this is a bug. Is that right.

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Yes. Any contributions would be welcome.
The fix would include only standard reflection API calls so it should be pretty easy to tackle even for newcomers.

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Ok, I've fixed the issue, I'll add unit tests later and I'll make a pull request after verification.

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