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-rw-r--r--extra/mariabackup/xtrabackup.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/extra/mariabackup/xtrabackup.cc b/extra/mariabackup/xtrabackup.cc
index 30bbf67807e..fed66c844c5 100644
--- a/extra/mariabackup/xtrabackup.cc
+++ b/extra/mariabackup/xtrabackup.cc
@@ -3056,7 +3056,7 @@ static dberr_t xb_assign_undo_space_start()
name[dirnamelen++] = OS_PATH_SEPARATOR;
}
- snprintf(name + dirnamelen, strlen(name) + strlen("ibdata1"),
+ snprintf(name + dirnamelen, (sizeof name) - dirnamelen,
"%s", "ibdata1");
file = os_file_create(0, name, OS_FILE_OPEN,