NegativeArraySizeException on Frame.merge

My understanding is that this exception happens when you consume more 
items than the stack has available.

Is there an easy way to find out where this happening? I'm using Java8 
so turning off ClassWriter.COMPUTE_FRAMES and running the resulting 
class file won't give me the bad index/instruction (it instead complains 
about missing stackmap frames).

java.lang.NegativeArraySizeException
     at org.objectweb.asm.Frame.merge(Frame.java:1343)
     at org.objectweb.asm.MethodWriter.visitMaxs(MethodWriter.java:1475)
     at org.objectweb.asm.tree.MethodNode.accept(MethodNode.java:835)
     at org.objectweb.asm.tree.MethodNode.accept(MethodNode.java:727)
     at org.objectweb.asm.tree.ClassNode.accept(ClassNode.java:412)
     at 
com.offbynull.coroutines.instrumenter.Instrumenter.instrument(Instrumenter.java:125)
     at 
com.offbynull.coroutines.instrumenter.testhelpers.TestUtils.loadClassesInZipResourceAndInstrument(TestUtils.java:92)
     at 
com.offbynull.coroutines.instrumenter.InstrumenterTest.performCountTest(InstrumenterTest.java:339)
     at 
com.offbynull.coroutines.instrumenter.InstrumenterTest.mustProperlySuspendWithStaticMethods(InstrumenterTest.java:84)


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