busybox/shell/ash_test/ash-standalone/nofork_trashes_getopt.tests

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# In this test, rm is NOFORK and it modifies getopt internal state
rm -f non_existent_file
# Subsequent hexdump is run as NOEXEC, and thus still uses this state
hexdump </dev/null
# Did hexdump segfault etc?
echo $?