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-rw-r--r--src/H5Omessage.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/H5Omessage.c b/src/H5Omessage.c
index 286240c..4a9ecb5 100644
--- a/src/H5Omessage.c
+++ b/src/H5Omessage.c
@@ -393,7 +393,7 @@ H5O_msg_write_real(H5F_t *f, hid_t dxpl_id, H5O_t *oh, const H5O_msg_class_t *ty
HGOTO_ERROR(H5E_OHDR, H5E_NOTFOUND, FAIL, "message type not found")
/* Check for modifying a constant message */
- if(idx_msg->flags & H5O_MSG_FLAG_CONSTANT)
+ if(!(update_flags & H5O_UPDATE_FORCE) && (idx_msg->flags & H5O_MSG_FLAG_CONSTANT))
HGOTO_ERROR(H5E_OHDR, H5E_WRITEERROR, FAIL, "unable to modify constant message")
/* This message is shared, but it's being modified. */
else if((idx_msg->flags & H5O_MSG_FLAG_SHARED) || (idx_msg->flags & H5O_MSG_FLAG_SHAREABLE)) {