From d57800c45b71ad3f0522a63f187e5bb6513f1bc0 Mon Sep 17 00:00:00 2001
From: Andrew Janke <andrew@apjanke.net>
Date: Wed, 29 Jun 2016 14:11:03 -0400
Subject: [PATCH] brew: sanitize BASH_ENV

---
 Library/Homebrew/brew.sh | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Library/Homebrew/brew.sh b/Library/Homebrew/brew.sh
index bf8985ffa4..1cb65a72ae 100644
--- a/Library/Homebrew/brew.sh
+++ b/Library/Homebrew/brew.sh
@@ -64,6 +64,10 @@ fi
 unset GEM_HOME
 unset GEM_PATH
 
+# Users may have this set, injecting arbitrary environment changes into
+# bash processes inside builds
+unset BASH_ENV
+
 HOMEBREW_SYSTEM="$(uname -s)"
 case "$HOMEBREW_SYSTEM" in
   Darwin) HOMEBREW_OSX="1" ;;