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#!/bin/sh
#
# Check whether repeated killing of just forked processes crashes strace.
#
# Copyright (c) 2019 The strace developers.
# All rights reserved.
#
# SPDX-License-Identifier: GPL-2.0-or-later
. "${srcdir=.}/init.sh"
run_prog_skip_if_failed date +%s > /dev/null
s0="$(date +%s)"
run_prog
args="-f -qq -e signal=none -e trace=sched_yield,/kill $args"
# Run strace until the known corner case is observed.
while :; do
run_strace $args
# Printing of "<... SYSCALL resumed>" in strace.c:print_event_exit
# used to segfault when the syscall number had not been obtained
# on syscall entering.
grep -q '^[1-9][0-9]* <\.\.\. ???? resumed>) \+= ?$' "$LOG" && exit 0
s1="$(date +%s)"
if [ "$(($s1-$s0))" -gt "$(($TIMEOUT_DURATION/2))" ]; then
skip_ 'Unable to reproduce <... ???? resumed>'
fi
done
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