1#!/bin/sh
2# Before gzip-1.4, this the use of memcpy in inflate_codes could
3# mistakenly operate on overlapping regions.  Exercise that code.
4
5# Copyright (C) 2010-2016 Free Software Foundation, Inc.
6
7# This program is free software: you can redistribute it and/or modify
8# it under the terms of the GNU General Public License as published by
9# the Free Software Foundation, either version 3 of the License, or
10# (at your option) any later version.
11
12# This program is distributed in the hope that it will be useful,
13# but WITHOUT ANY WARRANTY; without even the implied warranty of
14# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15# GNU General Public License for more details.
16
17# You should have received a copy of the GNU General Public License
18# along with this program.  If not, see <http://www.gnu.org/licenses/>.
19# limit so don't run it by default.
20
21. "${srcdir=.}/init.sh"; path_prepend_ .
22
23# The input must be larger than 32KiB and slightly
24# less uniform than e.g., all zeros.
25printf wxy%032767d 0 | tee in | gzip > in.gz || framework_failure_
26
27fail=0
28
29# Before the fix, this would call memcpy with overlapping regions.
30gzip -dc in.gz > out || fail=1
31
32compare in out || fail=1
33
34Exit $fail
35