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tst_big_rvar.c
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tst_big_rvar.c
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/*
Copyright 2008, UCAR/Unidata
See COPYRIGHT file for copying and redistribution conditions.
This program tests a large file bug on 32-bit platforms in versions
previous to netCDF-4.1.2, writing to a record variable with more
than 2 dimensions and more than 2**32 values per record, where the
write starts after the first 2**32 values in a record for that
variable.
$Id: tst_big_rvar.c,v 1.2 2010/05/21 15:20:26 russ Exp $
*/
#include <nc_tests.h>
#include "err_macros.h"
#include <netcdf.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#define FILE_NAME "tst_big_rvar.nc"
/* Test with both classic and 64-bit offset files. If netcdf-4 is
* included, test with both netCDF-4 format variants also. */
/* #ifdef USE_NETCDF4 */
/* #define NUM_FORMATS (4) */
/* #else */
/* #define NUM_FORMATS (2) */
/* #endif */
#define NUM_FORMATS (2)
#define NUMDIMS 4 /* rank of variable in tests */
#define DIMR NC_UNLIMITED
#define DIM1 2149 /* just big enough to demonstrate bug */
#define DIM2 1000
#define DIM3 2000 /* DIM1*DIM2*DIM3 > 2**32 */
static int
test_big_var(const char *testfile)
{
int ncid, varid, dimids[NUMDIMS];
size_t index[NUMDIMS];
int nval = 99;
int nval_in;
size_t start[NUMDIMS] = {0, 0, 0, 0};
size_t count[NUMDIMS] = {1, 1, DIM2, DIM3};
signed char data[DIM2][DIM3];
int i, j;
int nerrs = 0;
/* Create a file with one big record variable. */
if (nc_create(testfile, NC_CLOBBER, &ncid)) ERR;
if (nc_set_fill(ncid, NC_NOFILL, NULL)) ERR;
if (nc_def_dim(ncid, "rec", DIMR, &dimids[0])) ERR;
if (nc_def_dim(ncid, "dim1", DIM1, &dimids[1])) ERR;
if (nc_def_dim(ncid, "dim2", DIM2, &dimids[2])) ERR;
/* if (nc_def_dim(ncid, "dim3", DIM3 - 1, &dimids[1])) ERR; */
if (nc_def_dim(ncid, "dim3", DIM3, &dimids[3])) ERR;
if (nc_def_var(ncid, "var", NC_BYTE, NUMDIMS, dimids, &varid)) ERR;
if (nc_enddef(ncid)) ERR;
/* Initialize slab of data. */
for (i = 0; i < DIM2; i++)
for (j = 0; j < DIM3; j++) {
data[i][j] = (i + j) % 16;
}
/* Just write the first and last slabs */
start[1] = 0;
if (nc_put_vara_schar(ncid, varid, start, count, &data[0][0])) ERR;
start[1] = DIM1 - 1;
if (nc_put_vara_schar(ncid, varid, start, count, &data[0][0])) ERR;
if (nc_close(ncid)) ERR;
/* Open the file and check it. */
if (nc_open(testfile, NC_NOWRITE, &ncid)) ERR;
if (nc_inq_varid(ncid, "var", &varid)) ERR;
/* Read and check data in the first and last slabs */
start[1] = 0;
if (nc_get_vara_schar(ncid, varid, start, count, &data[0][0])) ERR;
for (i = 0; i < DIM2; i++)
for (j = 0; j < DIM3; j++)
{
if (data[i][j] != (signed char)((i + j) % 16))
{
printf("error on start[0]: %d i: %d j: %d expected %d got %d\n",
start[0], i, j, (i + j) % 16, data[i][j]);
ERR;
if(nerrs++ > 2)
return nerrs;
}
}
start[1] = DIM1 - 1;
if (nc_get_vara_schar(ncid, varid, start, count, &data[0][0])) ERR;
for (i = 0; i < DIM2; i++)
for (j = 0; j < DIM3; j++)
{
if (data[i][j] != (signed char)((i + j) % 16))
{
printf("error on start[0]: %d i: %d j: %d expected %d got %d\n",
start[0], i, j, (i + j) % 16, data[i][j]);
ERR;
if(nerrs++ > 2)
return nerrs;
}
}
if (nc_close(ncid)) ERR;
return 0;
}
int
main(int argc, char **argv) {
int i;
char testfile[NC_MAX_NAME + 1];
printf("\n*** Testing files with multidimensional variable with more than 2**32 values\n");
sprintf(testfile, "%s/%s", TEMP_LARGE, FILE_NAME);
for (i = NC_FORMAT_CLASSIC; i <= NUM_FORMATS; i++)
{
printf("*** testing format %d file with record variable with > 2**32 values...", i);
nc_set_default_format(i, NULL);
test_big_var(testfile);
(void) remove(testfile);
SUMMARIZE_ERR;
}
FINAL_RESULTS;
}