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-rw-r--r--src/H5FDmulti.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/H5FDmulti.c b/src/H5FDmulti.c
index ace79ee..276db2c 100644
--- a/src/H5FDmulti.c
+++ b/src/H5FDmulti.c
@@ -715,7 +715,7 @@ H5FD_multi_sb_encode(H5FD_t *_file, char *name/*out*/,
p += sizeof(haddr_t);
nseen++;
} END_MEMBERS;
- if (H5Tconvert(H5T_NATIVE_HADDR, H5T_STD_U64LE, nseen, buf+8, NULL,
+ if (H5Tconvert(H5T_NATIVE_HADDR, H5T_STD_U64LE, nseen*2, buf+8, NULL,
H5P_DEFAULT)<0) {
H5Epush_ret(func, H5E_DATATYPE, H5E_CANTCONVERT, "can't convert superblock info", -1);
}