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Quote: track the origin of nulls by piggybacking an id; may help with diagnosis in one third of cases
Topic:
monitored variable
Topic:
execution tracing
Topic:
undefined, null, and other signal values
Quotation Skeleton
This paper presents efficient origin tracking of unusable … report them if they cause an error. The … stores origin information in the spare bits of … such as assignments and comparisons. … [p. 407] At null assignments, our modified [Java] VM assigns the 27-bit value corresponding to the current program … [p. 409] We believe that the origin report is … most likely or definitely useful for the remaining … Google-1 Google-2
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Topic: monitored variable (28 items)
Topic: execution tracing (42 items)
Topic: undefined, null, and other signal values (34 items)