From 629021b6de8334af299c7f3c66ca10627e54c5e4 Mon Sep 17 00:00:00 2001
From: Michael Marineau <michael.marineau@coreos.com>
Date: Wed, 8 Apr 2015 17:11:12 -0700
Subject: [PATCH] update_chroot: fail if --toolchain_boards= was given invalid
 names

---
 update_chroot | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/update_chroot b/update_chroot
index ac1c4248af..2d5c474db9 100755
--- a/update_chroot
+++ b/update_chroot
@@ -188,6 +188,8 @@ gcc_set_latest_profile "$(portageq envvar CHOST)"
 if [[ "${FLAGS_skip_toolchain_update}" -eq "${FLAGS_FALSE}" && \
       -n "${FLAGS_toolchain_boards}" ]]; then
   CROSS_CHOSTS=( $(get_board_chost ${FLAGS_toolchain_boards} | sort -u) )
+  # double check get_board_chost actually returned results, pipefail isn't set.
+  [[ -n "${CROSS_CHOSTS[*]}" ]] || exit 1
 
   for cross_chost in "${CROSS_CHOSTS[@]}"; do
     info "Updating cross ${cross_chost} toolchain"