Correct -- it would be nice if the glibc maintainers would reconsider their opinion of supporting the optional Annex K functionality. There is definitely user demand for the feature.
> The C Committee has taken two votes on this, and in each case, the committee has been equally divided. Without a consensus to change the standard, the status quo wins.
The fact that it has only survived on status quo is a pretty crass hint that things aren't well with Annex K.
> Microsoft Visual Studio implements an early version of the APIs. However, the implementation is incomplete and conforms neither to C11 nor to the original TR 24731-1.
> As a result of the numerous deviations from the specification the Microsoft implementation cannot be considered conforming or portable.
