Reading compound types that contain arrays

[PhilipDeegan]

Hi there,

I've got a compound type that looks as follows from h5dump

       DATASET "d_box" {
          DATATYPE  H5T_COMPOUND {
             H5T_STD_I32BE "dim";
             H5T_ARRAY { [3] H5T_STD_I32BE } "lo";
             H5T_ARRAY { [3] H5T_STD_I32BE } "hi";
          }
          DATASPACE  SIMPLE { ( 1 ) / ( 1 ) }
          DATA {
          (0): {
                1,
                [ 0, 0, 0 ],
                [ 199, 0, 0 ]
             }
          }
          ATTRIBUTE "Type" {
             DATATYPE  H5T_STD_I8BE
             DATASPACE  SCALAR
             DATA {
             (0): 2
             }
          }
       }

it's not so obvious to me how I am supposed to access this. I've tried, making a custom class that contains std::array<std::int32_t, 3> but it fails at runtime (maybe it should work tho) and I've tried a struct containing vectors but it doesn't compile due to not trivially copyable.

And looking at the example src/examples/create_datatype.cpp it's not so clear how I am supposed to go about this.
Do I need to commit a custom data type to the file? What should that look like?

Suggestions welcome.