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-rw-r--r--src/H5FDmpio.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/H5FDmpio.c b/src/H5FDmpio.c
index 7cac7f3..89dd768 100644
--- a/src/H5FDmpio.c
+++ b/src/H5FDmpio.c
@@ -424,6 +424,7 @@ H5FD_mpio_tas_allsame(H5FD_t *_file, hbool_t newval)
#endif
assert(file);
+ assert(H5FD_MPIO==file->pub.driver_id);
oldval = file->allsame;
file->allsame = newval;