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fix index when ndims is large #875

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Merged
merged 1 commit into from
Dec 15, 2022
Merged

fix index when ndims is large #875

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11 changes: 6 additions & 5 deletions darshan-runtime/lib/darshan-pnetcdf-api.m4
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Original file line number Diff line number Diff line change
Expand Up @@ -87,7 +87,7 @@ define(`CALC_VARA_ACCESS_INFO',
if (ndims > PNETCDF_VAR_MAX_NDIMS)
start_ndx = ndims - PNETCDF_VAR_MAX_NDIMS;
for (i = start_ndx; i < ndims; i++) {
common_access_vals[1+i] = count[i];
common_access_vals[1+i-start_ndx] = count[i];
}
}
else {
Expand All @@ -98,18 +98,19 @@ dnl
define(`CALC_VARS_ACCESS_INFO',
`int ndims = rec_ref->var_rec->counters[PNETCDF_VAR_NDIMS];
if (ndims > 0) {
int i, start_ndx = 0;
int i, j, start_ndx = 0;
$3 = count[0];
for (i = 1; i < ndims; i++)
$3 *= count[i];
if (ndims > PNETCDF_VAR_MAX_NDIMS)
start_ndx = ndims - PNETCDF_VAR_MAX_NDIMS;
for (i = start_ndx; i < ndims; i++) {
common_access_vals[1+i] = count[i];
j = i - start_ndx;
common_access_vals[1+j] = count[i];
if (stride)
common_access_vals[1+i+PNETCDF_VAR_MAX_NDIMS] = stride[i];
common_access_vals[1+j+PNETCDF_VAR_MAX_NDIMS] = stride[i];
else
common_access_vals[1+i+PNETCDF_VAR_MAX_NDIMS] = 1;
common_access_vals[1+j+PNETCDF_VAR_MAX_NDIMS] = 1;
}
}
else {
Expand Down