null/empty region reference detection

I have a data set consisting of region references, but some of the elements of the data set are empty. When I use h5dump to view the contents of the data set, it shows "NULL" in those locations. I've looked through the h5dump code but haven't yet been able to figure out where references are being processed. Can anyone tell me how to go about *quietly* detecting NULL region references?

Thanks!

Never mind, I think I found my answer: the bytes of the hdset_reg_ref_t variable are all zero.

John Knutson wrote:

ยทยทยท

I have a data set consisting of region references, but some of the elements of the data set are empty. When I use h5dump to view the contents of the data set, it shows "NULL" in those locations. I've looked through the h5dump code but haven't yet been able to figure out where references are being processed. Can anyone tell me how to go about *quietly* detecting NULL region references?

Thanks!

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