I'm having a problem using H5Aopen_by_name with a group name. I'm using
HDF5 1.8.16.
Doesn't work:
auto aid = H5::H5Aopen_by_name(file_id, "g1", "a1", H5::H5P_DEFAULT,
H5::H5P_DEFAULT);
int v = 6;
auto r = H5::H5Awrite(aid, type_id, &v); // returns -1
Works:
auto group_id = H5::H5Gopen(file_id, "g1", H5::H5P_DEFAULT);
auto aid = H5::H5Aopen_by_name(group_id, ".", "a1", H5::H5P_DEFAULT,
H5::H5P_DEFAULT);
int v = 6;
auto r = H5::H5Awrite(aid, type_id, &v); // returns 0
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