StackOverflow2013

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Id
6566061
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0
AnswerCount
0
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CreationDate
2011-07-03T22:58:26.533
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0
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2011-07-03T22:58:26.533
LastEditDate
2017-05-23T12:13:20.337
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-1
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4120
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6235597
PostTypeId
2
Score
2
ViewCount
0
LastEditorDisplayName
text
Body
<p>I have found need to do pretty much the exact same thing on a project of mine. You might want to take a look at the source code <a href="http://code.google.com/p/mutability-detector/source/browse/trunk/MutabilityDetector/trunk/MutabilityDetector/src/main/java/org/mutabilitydetector/checkers/FieldAssignmentVisitor.java" rel="nofollow noreferrer">here</a> (in the <code>visitEnd()</code> method). It uses an <code>Analyzer</code> from the ASM project to take a 'snapshot' of the stack frame at the time of a <code>PUTFIELD</code> instruction. Those snapshots are then stored, and can be retrieved once the visitor has finished, part of the information contained in the snapshot is the type of reference at the top of the stack.</p> <p>The particular class linked to above is designed to be subclassed, an example of a subclass is <a href="http://code.google.com/p/mutability-detector/source/browse/trunk/MutabilityDetector/trunk/MutabilityDetector/src/main/java/org/mutabilitydetector/checkers/MutableTypeToFieldChecker.java" rel="nofollow noreferrer">here</a> (check out <code>visitMethod()</code>). At the time I needed to do this, I turned to StackOverflow too, you may want to check out <a href="https://stackoverflow.com/questions/1852758/how-to-inspect-the-stack-using-an-asm-visitor">the question I asked at the time</a>, particularly the link <a href="http://www.jroller.com/eu/entry/method_code_analyzis_with_asm" rel="nofollow noreferrer">provided in the accepted answer</a>, which provided the basis of the code I eventually used.</p>
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1. POHow to statically analyze reference types passed to each bytecode instruction?
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