Java: Allow null literals as sources in data flow. #2671
Merged
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This is a minor bugfix in the Java data flow library. Global data flow isn't really targeted towards nullness analysis, but there's no reason that it shouldn't work to have null literals as sources, as there will likely be someone who wants to play around with it. The reason why null sources haven't worked for a long time is that they have been accidentally filtered by type pruning.