From aff81e2b0d6ed9befc69f328dacd40f148bea4a4 Mon Sep 17 00:00:00 2001 From: Ke Wu Date: Wed, 3 Apr 2019 17:22:03 -0700 Subject: [PATCH] Fix empty array expansion error in cluster/gce/util.sh Empty array expansion causes "unbound variable" error in bash 4.2 and bash 4.3. --- cluster/gce/util.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/cluster/gce/util.sh b/cluster/gce/util.sh index a39e822535..2bf51843d5 100755 --- a/cluster/gce/util.sh +++ b/cluster/gce/util.sh @@ -3027,7 +3027,7 @@ function kube-down() { # change during a cluster upgrade.) local templates=$(get-template "${PROJECT}") - local all_instance_groups=(${INSTANCE_GROUPS[@]} ${WINDOWS_INSTANCE_GROUPS[@]}) + local all_instance_groups=(${INSTANCE_GROUPS[@]:-} ${WINDOWS_INSTANCE_GROUPS[@]:-}) for group in ${all_instance_groups[@]:-}; do if gcloud compute instance-groups managed describe "${group}" --project "${PROJECT}" --zone "${ZONE}" &>/dev/null; then gcloud compute instance-groups managed delete \