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85 lines
2.4 KiB
C
85 lines
2.4 KiB
C
/*
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Copyright 2018, UCAR/Unidata
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See COPYRIGHT file for copying and redistribution conditions.
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This program tests the large file bug in netCDF 3.6.2,
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creating byte and short variables larger than 4 GiB.
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$Id: tst_big_var.c,v 1.9 2010/05/15 00:50:10 russ Exp $
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*/
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#include <nc_tests.h>
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#include "err_macros.h"
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#include <netcdf.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#define FILE_NAME "tst_big_var.nc"
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/* Test with both classic and 64-bit offset files. If netcdf-4 is
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* included, test with both netCDF-4 format variants also. */
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#ifdef USE_HDF5
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#define NUM_FORMATS (4)
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#else
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#define NUM_FORMATS (2)
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#endif
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#define NUMDIMS 2 /* rank of each variable in tests */
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#define DIM1 2048
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#define DIM2 2097153 /* DIM1*DIM2*sizeof(char) > 2**32 */
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/*
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* In netCDF-3.6.2, an assertion failure occurs on 32-bit platforms
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* when creating a byte variable for which the product of dimensions
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* is greater than 2**32. Check that this bug has been fixed.
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*/
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static int
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test_big_var(const char *testfile)
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{
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int ncid, varid, dimids[NUMDIMS];
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size_t index[NUMDIMS];
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int nval = 99;
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int nval_in;
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/* Create a file with one big variable. */
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if (nc_create(testfile, NC_CLOBBER, &ncid)) ERR;
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if (nc_set_fill(ncid, NC_NOFILL, NULL)) ERR;
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if (nc_def_dim(ncid, "dim1", DIM1, &dimids[0])) ERR;
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if (nc_def_dim(ncid, "dim2", DIM2 - 1, &dimids[1])) ERR;
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if (nc_def_var(ncid, "var", NC_BYTE, NUMDIMS, dimids, &varid)) ERR;
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if (nc_enddef(ncid)) ERR;
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index[0] = DIM1 - 1;
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index[1] = DIM2 - 2;
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if (nc_put_var1_int(ncid, varid, index, &nval)) ERR;
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if (nc_close(ncid)) ERR;
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/* Open the file and check it. */
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if (nc_open(testfile, NC_NOWRITE, &ncid)) ERR;
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if (nc_inq_varid(ncid, "var", &varid)) ERR;
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if (nc_get_var1_int(ncid, varid, index, &nval_in)) ERR;
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if (nval != nval_in) ERR;
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if (nc_close(ncid)) ERR;
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return 0;
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}
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int
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main(int argc, char **argv) {
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int i;
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char testfile[NC_MAX_NAME + 1];
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printf("\n*** Testing files with one very big variable.\n");
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snprintf(testfile, sizeof(testfile), "%s/%s", TEMP_LARGE, FILE_NAME);
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for (i = NC_FORMAT_CLASSIC; i <= NUM_FORMATS; i++)
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{
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printf("*** testing format %d file with byte variable with > 2**32 values...", i);
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nc_set_default_format(i, NULL);
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test_big_var(testfile);
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(void) remove(testfile);
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SUMMARIZE_ERR;
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}
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FINAL_RESULTS;
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}
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