H5.close prevents saving complex data to files with '-v7.3'

I regularly write and read data to files using HDF5 library routines, and to be safe, I always call H5.close when I'm done writing or reading the data. However, I recently noticed that after calling H5.close, I can no longer use the save command to write complex data in the '-v7.3' format. Even if I try H5.open again, it still doesn't work. This seems like a bug to me.

For example:

>> test = sqrt(-1);
>> save('temp1.mat', 'test', '-v7.3')
>> clear test
>> load('temp1.mat') % Works fine.
>> H5.close
>> save('temp2.mat', 'test', '-v7.3') % Does not work.
Error using save
Can't write file [...]\temp2.mat.

>> H5.open
>> save('temp2.mat', 'test', '-v7.3') % Still doesn't work.
Error using save
Can't write file [...]\temp2.mat.

[per isakson]

I reproduced this behavior on R2013a and Win7.

[Patrick Vacek]

For the record, I'm using R2014b on Win7. I can also reproduce this on R2011b.

[Ellen Johnson]

Hi Patrick, Can you please verify that you see this behavior in R2014b? I'm trying to determine if it is directly related to your other inquiry on H5L.visit behavior in R2015a. Thank you, Ellen

[Patrick Vacek]

Hello Ellen, I can verify this does not work on 2014b or 2015a. I had originally seen it on 2014b, and when I tested it now on 2015a, it crashed Matlab.