1 files changed, 48 insertions, 0 deletions
diff --git a/sys-apps/dtc/files/dtc-1.4.4-posix-shell.patch b/sys-apps/dtc/files/dtc-1.4.4-posix-shell.patch
new file mode 100644
index 000000000000..b9b0175c0bd3
--- /dev/null
+++ b/sys-apps/dtc/files/dtc-1.4.4-posix-shell.patch
@@ -0,0 +1,48 @@
+From 4d9522764985462741c7bb4af1ab231b9251476b Mon Sep 17 00:00:00 2001
+From: Mike Frysinger <vapier@chromium.org>
+Date: Wed, 10 Jan 2018 00:41:43 -0500
+Subject: [PATCH] dtdiff: change to POSIX shell
+
+This changes from the bash-specific process substitution feature to
+reading with pipes.  It relies on /dev/fd or /proc/self/fd existing.
+
+URL: https://crbug.com/756559
+Signed-off-by: Mike Frysinger <vapier@chromium.org>
+---
+ dtdiff | 19 +++++++++++++------
+ 1 file changed, 13 insertions(+), 6 deletions(-)
+
+diff --git a/dtdiff b/dtdiff
+index 5fa772b0ab62..4d1b71756c2f 100644
+--- a/dtdiff
++++ b/dtdiff
+@@ -1,8 +1,4 @@
+-#! /bin/bash
+-
+-# This script uses the bash <(...) extension.
+-# If you want to change this to work with a generic /bin/sh, make sure
+-# you fix that.
++#! /bin/sh
+ 
+ 
+ DTC=dtc
+@@ -35,4 +31,15 @@ if [ $# != 2 ]; then
+     exit 1
+ fi
+ 
+-diff -u <(source_and_sort "$1") <(source_and_sort "$2")
++for dir in /dev/fd /proc/self/fd; do
++    if [ -d "${dir}" ]; then
++        break
++    fi
++done
++
++source_and_sort "$1" | (
++    # Duplicate current stdin from the first file to fd 3 so we can change fd 0
++    # to the second file.
++    exec 3<&0
++    source_and_sort "$2" | diff -u "${dir}/3" "${dir}/0"
++)
+-- 
+2.15.1
+