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https://github.com/HDFGroup/hdf5.git
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17daa748fa
Bug fix
Description:
Correct integer overflow situation for computing the size of a dataset.
Solution:
Rachet one of the dimensions down far enough that the total size of the
dataset's raw data doesn't overflow a 64-bit int.
Platforms tested:
FreeBSD 4.10 (sleipnir)
IRIX 6.? (tesla) w/-n32
Too minor to require h5committest
96 lines
3.3 KiB
C
96 lines
3.3 KiB
C
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Copyright by the Board of Trustees of the University of Illinois. *
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* All rights reserved. *
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* *
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* This file is part of HDF5. The full HDF5 copyright notice, including *
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* terms governing use, modification, and redistribution, is contained in *
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* the files COPYING and Copyright.html. COPYING can be found at the root *
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* of the source code distribution tree; Copyright.html can be found at the *
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* root level of an installed copy of the electronic HDF5 document set and *
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* is linked from the top-level documents page. It can also be found at *
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* http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have *
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* access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/*
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* Programmer: Quincey Koziol <koziol@ncsa.uiuc.edu>
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* Thursday, May 27, 2004
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*
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* Purpose: Create two datasets (one for version 1 and one for version 2 of
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* the layout message), which should have dimensions too large to
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* represent in version 1 & 2 of the storage layout message.
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* This program is used to create the test file `tlayouto.h5' which
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* has truncated dimension information and can be used to verify that the
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* library has fixed up the storage size correctly.
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* To build the test file, this program MUST be compiled and linked
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* with version hdf5-1.6.2 or _earlier_ libraries and the generated test
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* file must be put into the 'test' directory in the 1.7+ (or 1.6+) branch
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* of the library.
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*/
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#include "hdf5.h"
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#define TESTFILE "tlayouto.h5"
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#define SPACE_RANK 2
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#define SPACE_DIM0 (8*1024*1024*1024ULL)
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#define SPACE_DIM1 ((256*1024*1024ULL)+1ULL)
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/*-------------------------------------------------------------------------
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* Function: main
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*
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* Purpose:
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*
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* Return: Success:
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*
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* Failure:
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*
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* Programmer: Quincey Koziol
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* Friday, January 3, 2003
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*
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* Modifications:
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*
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*-------------------------------------------------------------------------
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*/
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int
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main(void)
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{
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hid_t file, space, dset, dcpl;
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herr_t ret;
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unsigned rank=SPACE_RANK; /* Rank of dataspace */
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hsize_t big_dims[SPACE_RANK]={SPACE_DIM0,SPACE_DIM1}; /* Large dimensions */
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/* Create the file */
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file = H5Fcreate(TESTFILE, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
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if(file<0)
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printf("file<0!\n");
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/* Create the dataspace (for dataset) */
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space = H5Screate_simple(rank,big_dims,NULL);
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if(space<0)
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printf("space<0!\n");
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/* Create a dataset creation property list */
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dcpl = H5Pcreate(H5P_DATASET_CREATE);
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if(dcpl<0)
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printf("dcpl<0!\n");
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/* Make certain that the dataset's storage doesn't get allocated :-) */
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ret = H5Pset_alloc_time(dcpl,H5D_ALLOC_TIME_LATE);
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if(ret<0)
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printf("H5Pset_alloc_time() failed!\n");
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/* Create the dataset with deferred storage allocation */
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dset = H5Dcreate(file, "Dataset", H5T_NATIVE_INT, space, dcpl);
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if(dset<0)
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printf("dset<0!\n");
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H5Dclose(dset);
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H5Sclose(space);
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H5Pclose(dcpl);
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H5Fclose(file);
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return 0;
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}
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