#4 lockfree dictionary NULL ptr or undocumented reserved key

[Anonymous]

If you call findKey with K an integer type having a value of zero then at appx line #441 in lockfree_dictionary.h: (value = result->v;) will fail since result is null. It reaches this line since the previous if checks for node2->key != key which is false on the bookend nodes, so it thinks it found a match. Is zero a reserved value for a key? If so this should be documented; otherwise the if should include a null check on result.

[Anonymous]

The bookend nodes key value uses the default constructor, so a non integer type K with a different default initializer may have this issue on a non-zero value. (correct?)