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-rw-r--r--src/H5HFcache.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/H5HFcache.c b/src/H5HFcache.c
index 6d250d1..b5d7cb5 100644
--- a/src/H5HFcache.c
+++ b/src/H5HFcache.c
@@ -1539,7 +1539,7 @@ H5HF_cache_dblock_flush(H5F_t *f, hid_t dxpl_id, hbool_t destroy, haddr_t addr,
if(hdr->filter_len > 0) {
H5Z_cb_t filter_cb = {NULL, NULL}; /* Filter callback structure */
size_t nbytes; /* Number of bytes used */
- unsigned filter_mask; /* Filter mask for block */
+ unsigned filter_mask = 0; /* Filter mask for block */
/* Allocate buffer to perform I/O filtering on */
write_size = dblock->size;