Import OpenSSL 1.1.0f

util/find-unused-errs

@@ -0,0 +1,35 @@
+#! /bin/bash
+# Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
+#
+# Licensed under the OpenSSL license (the "License").  You may not use
+# this file except in compliance with the License.  You can obtain a copy
+# in the file LICENSE in the source distribution or at
+# https://www.openssl.org/source/license.html
+
+# Find unused error function-names and reason-codes, and edit them
+# out of the source.  Doesn't handle line-wrapping, might have to do
+# some manual cleanups to fix compile errors.
+
+export X1=/tmp/f.1.$$
+export X2=/tmp/f.2.$$
+
+cd include/openssl || exit 1
+grep '_[RF]_' * | awk '{print $3;}' | sort -u >$X1
+cd ../..
+
+for F in `cat $X1` ; do
+    git grep -l --full-name -F $F >$X2
+    NUM=`wc -l <$X2`
+    test $NUM -gt 2 && continue
+    if grep -q $F crypto/err/openssl.ec ; then
+        echo Possibly unused $F found in openssl.ec
+        continue
+    fi
+    echo $F
+    for FILE in `cat $X2` ; do
+        grep -v -w $F <$FILE >$FILE.new
+        mv $FILE.new $FILE
+    done
+done
+
+rm $X1 $X2