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117 lines
3.4 KiB
C
117 lines
3.4 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 fix for a large file bug in versions previous
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to netCDF-4.1.2 for 32-bit platforms, writing to a variable with
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more than 1 dimension and more than 2**32 values, where the write
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starts after the first 2**32 elements.
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Russ Rew
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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_var6.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 4 /* rank of variable in tests */
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#define DIM0 1
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#define DIM1 2
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#define DIM2 5000
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#define DIM3 1000000 /* DIM2*DIM3 > 2**32 */
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#define FIRST_VAL 65
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#define SECOND_VAL 90
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/*
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* This program tests the fix for a large file bug in versions
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* previous to netCDF-4.1.2 for 32-bit platforms, writing to a
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* variable with more than 1 dimension and more than 2**32 values,
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* where the write starts after the first 2**32 elements. The bug
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* applies to record variables with more than 2**32 values per record
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* as well, but that's not tested here.
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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 start[NUMDIMS] = {0, 0, 0, 0};
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size_t count[NUMDIMS] = {1, 1, 1, DIM3};
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short data[DIM3];
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int j;
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int nerrs = 0;
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/* Create a file with one big 4D 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, "dim0", DIM0, &dimids[0])) ERR;
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if (nc_def_dim(ncid, "dim1", DIM1, &dimids[1])) ERR;
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if (nc_def_dim(ncid, "dim2", DIM2, &dimids[2])) ERR;
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if (nc_def_dim(ncid, "dim3", DIM3, &dimids[3])) ERR;
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if (nc_def_var(ncid, "var", NC_SHORT, NUMDIMS, dimids, &varid)) ERR;
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if (nc_enddef(ncid)) ERR;
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/* write var(0,0,4294,*) as all FIRST_VAL */
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start[0] = 0;
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start[1] = 0;
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start[2] = 4294;
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for (j = 0; j < DIM3; j++)
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data[j] = FIRST_VAL;
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if (nc_put_vara_short(ncid, varid, start, count, &data[0])) ERR;
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/* write var(0,1,0,*) as all 8588 */
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start[0] = 0;
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start[1] = 1;
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start[2] = 0;
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for (j = 0; j < DIM3; j++)
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data[j] = SECOND_VAL;
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if (nc_put_vara_short(ncid, varid, start, count, &data[0])) ERR;
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/* Read and check var(0,0,4294,*) */
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start[0] = 0;
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start[1] = 0;
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start[2] = 4294;
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if (nc_get_vara_short(ncid, varid, start, count, &data[0])) ERR;
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for (j = 0; j < DIM3; j++) {
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if (data[j] != FIRST_VAL ) {
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printf("error on start[0..2]: %ld,%ld,%ld j: %d, expected %d got %d\n",
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start[0], start[1], start[2], j, FIRST_VAL, data[j]);
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ERR;
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if(nerrs++ > 1)
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return nerrs;
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}
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}
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if (nc_close(ncid)) ERR;
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return NC_NOERR;
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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 multidimensional variable with more than 2**32 values\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 short variable with > 2**32 values...", i);
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nc_set_default_format(i, NULL);
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if (test_big_var(testfile)) ERR_RET;
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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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