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authorAlbert Cheng <acheng@hdfgroup.org>2001-08-20 18:36:58 (GMT)
committerAlbert Cheng <acheng@hdfgroup.org>2001-08-20 18:36:58 (GMT)
commit82e12143f97fbe9ce09f137004e3118fb745f28e (patch)
tree115e48bf8b66dc58d90f6ddd249b4629df2b6f61 /src/H5FDmpio.c
parent701966ef0f8d57fd44428a0f318590ce87a6d94c (diff)
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[svn-r4396] Purpose:
bug fix Description: H5FD_mpio_flush() would try to file seek negative if the file->eoa is 0 (e.g., doing mpio on the raw-file of the split file driver). Put in a code to catch this case by returning succeed immediately. Platforms tested: modi4(pp)
Diffstat (limited to 'src/H5FDmpio.c')
-rw-r--r--src/H5FDmpio.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/H5FDmpio.c b/src/H5FDmpio.c
index ab1fbd8..15cc6b8 100644
--- a/src/H5FDmpio.c
+++ b/src/H5FDmpio.c
@@ -1542,6 +1542,9 @@ H5FD_mpio_flush(H5FD_t *_file)
* Unfortunately, keeping track of EOF is an expensive operation, so
* we can't just check whether EOF<EOA like with other drivers.
* Therefore we'll just read the byte at EOA-1 and then write it back. */
+ /* But if eoa is zero, then nothing to flush. Just return */
+ if (file->eoa == 0)
+ HRETURN(SUCCEED);
if (haddr_to_MPIOff(file->eoa-1, &mpi_off)<0) {
HRETURN_ERROR(H5E_INTERNAL, H5E_BADRANGE, FAIL,
"cannot convert from haddr_t to MPI_Offset");