#!/bin/sh
# Ensure that grep can handle lines 2GiB long.
# Before grep-2.16, a line of length 2^31 or greater would provoke
# an "Invalid argument" (EINVAL) failure from the read syscall on
# systems like OS/X 10.8.5.

. "${srcdir=.}/init.sh"; path_prepend_ ../src

# Searching 2GiB takes a while.
expensive_

echo big > exp || framework_failure_

MiB=1048576
dd bs=$MiB seek=2048 of=big < /dev/null || framework_failure_
echo x >> big || framework_failure_
grep -l x big > out 2> err || fail=1

# Not everyone has 2GB of memory free.
grep '^grep: memory exhausted$' err && skip_ 'memory exhausted'

compare exp out || fail=1
compare /dev/null err || fail=1

Exit $fail