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| HDF5 Last Updated on 2026-03-23 The HDF5 Field Guide

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hdset_reg_ref_t Struct Reference

`#include <src/H5Rpublic.h>`

## Detailed Description

Buffer to store heap ID and index

This needs to be large enough to store largest haddr_t in a worst case machine (8 bytes currently) plus an int.

Deprecated
  Dataset region reference type that is used with deprecated reference APIs.

Note
  This type can only be used with the "native" HDF5 VOL connector.

## Data Fields
uint8_t | __data [(sizeof(haddr_t)+4)]

## Field Documentation

## ◆ __data

uint8_t __data[(sizeof(haddr_t)+4)]

The documentation for this struct was generated from the following file:

- src/H5Rpublic.h