#!/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