Construct H5::DataType with predefined datatype in C++ 1.8.6

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1

Hi,

I'm in the process to upgrade our application from 1.6.5 to 1.8.6. I have noticed the constructor of H5::DataType (hitd_t existing_id, bool predefined) has changed to H5::DataType (hitd_t existing_id). The interface changes do make sense from the point view of users, however I have problem to create an object with the predefined datatype - Here is a very simple example:

#include <H5cpp.h>
int main ()
{
  H5::DataType (H5::H5T_NATIVE_FLOAT);

return 0;
}

The destructor complains with the following errors:

DataType::~DataType - H5Tclose failed

HDF5-DIAG: Error detected in HDF5 (1.8.6) thread 140429119538976:

  #000: H5T.c line 1723 in H5Tclose(): immutable datatype

    major: Invalid arguments to routine

    minor: Bad value

DataType::~DataType - H5Tclose failed

I also tried to the following code:

#include <H5cpp.h>
int main ()
{
  H5::DataType (H5::PredType::NATIVE_FLOAT);

  return 0;
}

The code works for 1.8.6 but not 1.6.5 unfortunately.

Here are the errors when trying to insert the object to a compound datatype.

HDF5-DIAG: Error detected in HDF5 library version: 1.6.5 thread 3077396992. Back trace follows.

  #000: H5Tcompound.c line 351 in H5Tinsert(): not a datatype

    major(01): Function arguments

    minor(03): Inappropriate type

H5Tinsert failed

Could anyone please instruct a proper way to construct H5::DataType with the predefined datatype? It'd be nice if the code can work in both 1.6.5 and 1.8.6.

Thanks,

Zane

2

Hi Zane,

The predefined type should be in the form of H5::PredType::NATIVE_FLOAT, not
H5::H5T_NATIVE_FLOAT. I'm surprised it passed the compilation. Does
FloatType::FloatType( const PredType& pred_type ) work for you?

Binh-Minh

···

_____

From: hdf-forum-bounces@hdfgroup.org [mailto:hdf-forum-bounces@hdfgroup.org]
On Behalf Of Zhengying Wang
Sent: Wednesday, January 04, 2012 5:04 AM
To: 'hdf-forum@hdfgroup.org'
Subject: [Hdf-forum] Construct H5::DataType with predefined datatype in
C++1.8.6

Hi,

I'm in the process to upgrade our application from 1.6.5 to 1.8.6. I have
noticed the constructor of H5::DataType (hitd_t existing_id, bool
predefined) has changed to H5::DataType (hitd_t existing_id). The interface
changes do make sense from the point view of users, however I have problem
to create an object with the predefined datatype - Here is a very simple
example:

#include <H5cpp.h>

int main ()

{

  H5::DataType (H5::H5T_NATIVE_FLOAT);

return 0;

}

The destructor complains with the following errors:

DataType::~DataType - H5Tclose failed

HDF5-DIAG: Error detected in HDF5 (1.8.6) thread 140429119538976:

  #000: H5T.c line 1723 in H5Tclose(): immutable datatype

    major: Invalid arguments to routine

    minor: Bad value

DataType::~DataType - H5Tclose failed

I also tried to the following code:

#include <H5cpp.h>

int main ()

{

  H5::DataType (H5::PredType::NATIVE_FLOAT);

  return 0;

}

The code works for 1.8.6 but not 1.6.5 unfortunately.

Here are the errors when trying to insert the object to a compound datatype.

HDF5-DIAG: Error detected in HDF5 library version: 1.6.5 thread 3077396992.
Back trace follows.

  #000: H5Tcompound.c line 351 in H5Tinsert(): not a datatype

    major(01): Function arguments

    minor(03): Inappropriate type

H5Tinsert failed

Could anyone please instruct a proper way to construct H5::DataType with the
predefined datatype? It'd be nice if the code can work in both 1.6.5 and
1.8.6.

Thanks,

Zane