The V8 version of BinData accepts BinData( length, type, string ), which is not a feature of the SpiderMonkey version of BinData. This variation stores 'length' bytes of binary data copied directly from 'string', even if 'string' holds fewer than 'length' bytes of data, with the additional bytes copied from the memory locations that follow 'string'.

This three-argument variation should be removed to match the old feature set and the documentation.