1#!/bin/sh 2# Trigger a bug that would cause 'sort' to reference stale thread stack memory. 3 4# Copyright (C) 2010-2023 Free Software Foundation, Inc. 5 6# This program is free software: you can redistribute it and/or modify 7# it under the terms of the GNU General Public License as published by 8# the Free Software Foundation, either version 3 of the License, or 9# (at your option) any later version. 10 11# This program is distributed in the hope that it will be useful, 12# but WITHOUT ANY WARRANTY; without even the implied warranty of 13# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14# GNU General Public License for more details. 15 16# You should have received a copy of the GNU General Public License 17# along with this program. If not, see <https://www.gnu.org/licenses/>. 18 19# written by Jim Meyering and Paul Eggert 20 21. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src 22print_ver_ sort 23 24very_expensive_ 25require_valgrind_ 26 27grep '^#define HAVE_PTHREAD_T 1' "$CONFIG_HEADER" > /dev/null || 28 skip_ 'requires pthreads' 29 30# gensort output seems to trigger the failure more often, 31# so prefer gensort if it is available. 32(gensort -a 10000 in) 2>/dev/null || 33 seq -f %-98f 10000 | shuf > in || 34 framework_failure_ 35 36# On Fedora-17-beta (valgrind-3.7.0-2.fc17.x86_64), this evokes two complaints 37# that a conditional jump or move depends on uninitialized values, 38# each originating from _dl_start. 39valgrind --quiet --error-exitcode=3 sort --version > /dev/null || 40 framework_failure_ 'valgrind fails for trivial sort invocation' 41 42# With the bug, 'sort' would fail under valgrind about half the time, 43# on some circa-2010 multicore Linux platforms. Run the test 100 times 44# so that the probability of missing the bug should be about 1 in 45# 2**100 on these hosts. 46for i in $(seq 100); do 47 valgrind --quiet --error-exitcode=3 \ 48 sort -S 100K --parallel=2 in > /dev/null || 49 { fail=$?; echo iteration $i failed; Exit $fail; } 50done 51 52Exit $fail 53