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authorQuincey Koziol <koziol@hdfgroup.org>2005-04-30 20:04:44 (GMT)
committerQuincey Koziol <koziol@hdfgroup.org>2005-04-30 20:04:44 (GMT)
commit0fc9d137d3c00ec749152132db222d4a07bdc30f (patch)
tree0503d6055b6a1652dc57e2ff0085c783d8f40ba3 /src
parent78e4e6f008b8eba2930880058c5e475e2ee2691e (diff)
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[svn-r10703] Purpose:
Bug fix Description: Correct bug where buffers that have only fractional elements (usually from being compressed before being shuffled) would cause optimized algorithm to dump core. Solution: Don't attempt to shuffle bytes unless we've got more than one element. Platforms tested: FreeBSD 4.11 (sleipnir) Too minor to require h5committest
Diffstat (limited to 'src')
-rw-r--r--src/H5Zshuffle.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/src/H5Zshuffle.c b/src/H5Zshuffle.c
index 301aafd..d97676e 100644
--- a/src/H5Zshuffle.c
+++ b/src/H5Zshuffle.c
@@ -78,7 +78,7 @@ H5Z_set_local_shuffle(hid_t dcpl_id, hid_t type_id, hid_t UNUSED space_id)
#ifdef H5_WANT_H5_V1_6_COMPAT
if(H5Pget_filter_by_id(dcpl_id,H5Z_FILTER_SHUFFLE,&flags,&cd_nelmts, cd_values,0,NULL)<0)
#else
- if(H5Pget_filter_by_id(dcpl_id,H5Z_FILTER_SHUFFLE,&flags,&cd_nelmts, cd_values,0,NULL,NULL)<0)
+ if(H5Pget_filter_by_id(dcpl_id,H5Z_FILTER_SHUFFLE,&flags,&cd_nelmts, cd_values,(size_t)0,NULL,NULL)<0)
#endif
HGOTO_ERROR(H5E_PLINE, H5E_CANTGET, FAIL, "can't get shuffle parameters")
@@ -87,7 +87,7 @@ H5Z_set_local_shuffle(hid_t dcpl_id, hid_t type_id, hid_t UNUSED space_id)
HGOTO_ERROR(H5E_PLINE, H5E_BADTYPE, FAIL, "bad datatype size")
/* Modify the filter's parameters for this dataset */
- if(H5Pmodify_filter(dcpl_id, H5Z_FILTER_SHUFFLE, flags, H5Z_SHUFFLE_TOTAL_NPARMS, cd_values)<0)
+ if(H5Pmodify_filter(dcpl_id, H5Z_FILTER_SHUFFLE, flags, (size_t)H5Z_SHUFFLE_TOTAL_NPARMS, cd_values)<0)
HGOTO_ERROR(H5E_PLINE, H5E_CANTSET, FAIL, "can't set local shuffle parameters")
done:
@@ -142,11 +142,11 @@ H5Z_filter_shuffle(unsigned flags, size_t cd_nelmts, const unsigned cd_values[],
/* Get the number of bytes per element from the parameter block */
bytesoftype=cd_values[H5Z_SHUFFLE_PARM_SIZE];
- /* Don't do anything for 1-byte elements */
- if(bytesoftype>1) {
- /* Compute the number of elements in buffer */
- numofelements=nbytes/bytesoftype;
+ /* Compute the number of elements in buffer */
+ numofelements=nbytes/bytesoftype;
+ /* Don't do anything for 1-byte elements, or "fractional" elements */
+ if(bytesoftype > 1 && numofelements > 1) {
/* Compute the leftover bytes if there are any */
leftover = nbytes%bytesoftype;