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https://gitee.com/clygintang/Dockfile-Coreseek.git
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100 lines
2.9 KiB
Bash
Executable File
100 lines
2.9 KiB
Bash
Executable File
#!/bin/sh
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# This file is part of the GNU m4 testsuite
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# Copyright (C) 2000, 2003, 2007, 2008 Free Software Foundation, Inc.
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#
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# This file is part of GNU M4.
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#
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# GNU M4 is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# GNU M4 is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Script to verify that stack overflow is diagnosed properly when
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# there is infinite macro call nesting, provided the OS supports it.
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m4="$1"
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# Skip this test if -L defaults to 1024 instead of 0, as that is our
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# indicator that the OS does not support stack overflow detection.
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("$m4" --help | grep 'nesting.*\[0\]') >/dev/null 2>&1 \
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|| {
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echo "$0: skipping test, no stack overflow support detected in $m4"
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exit 77
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}
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# On some systems the ulimit command is available in ksh or bash but not sh
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(exec 2>/dev/null; ulimit -Ss 300) || {
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for altshell in bash bsh ksh zsh ; do
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if (exec >/dev/null 2>&1; $altshell -c 'ulimit -Ss 300') && test -z "$2"
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then
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echo "Using $altshell because it supports ulimit"
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exec $altshell "$0" "$@" running-with-$altshell
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exit 1
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fi
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done
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}
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tmpdir=
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trap 'st=$?; rm -rf "$tmpdir" && exit $st' 0
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trap '(exit $?); exit $?' 1 2 3 15
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# Create a temporary subdirectory $tmpdir in $TMPDIR (default /tmp).
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# Use mktemp if possible; otherwise fall back on mkdir,
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# with $RANDOM to make collisions less likely.
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: ${TMPDIR=/tmp}
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{
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tmpdir=`
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(umask 077 && mktemp -d "$TMPDIR/m4stk-XXXXXX") 2>/dev/null
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` &&
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test -n "$tmpdir" && test -d "$tmpdir"
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} || {
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tmpdir=$TMPDIR/m4stk-$$-$RANDOM
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(umask 077 && mkdir "$tmpdir")
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} || exit $?
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tmpfile="$tmpdir"/m4.out
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# Limit the stack size if the shell we are running permits it
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if (exec 2>/dev/null; ulimit -Ss 300)
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then
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ulimit -Ss 300
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echo "Stack soft limit set to `ulimit -s`K";
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else
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echo "Can't reset stack limit - this may take a while..."
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fi
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# Induce stack overflow.
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echo 'define(a,a(a))a' | "$m4" > "$tmpfile" 2>&1
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result=$?
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exitcode=1
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if test $result -eq 0 ; then
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echo "Failure - $m4 did not abort"
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else
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# See if stack overflow was diagnosed.
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case `cat "$tmpfile"` in
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*stack\ overflow*)
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case `echo "$tmpdir"/*` in
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$tmpfile)
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echo "Pass"
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exitcode=0 ;;
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*) echo "Failure - $m4 created unexpected core dump"
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ls -l "$tmpdir" ;;
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esac ;;
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*) echo "Failure - $m4 aborted unexpectedly";
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;;
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esac
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fi
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test $exitcode = 0 ||
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{ echo "Output from $m4:"; cat $tmpfile; }
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exit $exitcode
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