From 19324838c5f234a477ddf021e87027d512a8c37a Mon Sep 17 00:00:00 2001
From: Wojciech Knapik <wmknapik@gmail.com>
Date: Sat, 10 Apr 2021 17:41:49 +0200
Subject: [PATCH] Validate base_branch in pylint.sh.

---
 script/pylint.sh | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/script/pylint.sh b/script/pylint.sh
index 3e2ac060a6ca..2b1fc6b92e31 100755
--- a/script/pylint.sh
+++ b/script/pylint.sh
@@ -47,7 +47,9 @@ parse_cmdline() {
         case "${@:$i:1}" in
             --compare-with)
                 ((++i <= $#)) || error "The --compare-with option requires an argument";
-                base_branch="${*:$i:1}";;
+                base_branch="${*:$i:1}"
+                git merge-base "origin/${base_branch:?}" HEAD >/dev/null \
+                    || error "Invalid base_branch";;
             --report) report=1;;
             --help) help 0;;
             *) error "Invalid arguments passed: ${*:$i}";;