Files
bison/examples/c/reccalc/reccalc.test
Akim Demaille 6135fdc152 examples: beware of portability issues with sh's trap
On AIX 7.2, when invoking "exit 77", we actually exit with 127.  The
"cleanup" function, called via trap, received an incorrect exit
status, something described in Autoconf's doc.
Reported by Bruno Haible.
https://lists.gnu.org/archive/html/bug-bison/2020-05/msg00029.html
https://lists.gnu.org/archive/html/bug-bison/2020-05/msg00047.html

* examples/test (skip): New.
* examples/c/bistromathic/bistromathic.test,
* examples/c/reccalc/reccalc.test: Use it, to ensure $? is set to 77
when the trap is called.
2020-05-04 06:48:00 +02:00

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#! /bin/sh
# Copyright (C) 2018-2020 Free Software Foundation, Inc.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
(seq 0) >/dev/null 2>&1 || skip "gimme one seq"
cat >input <<EOF
1+2*3
EOF
run 0 '7'
cat >input <<EOF
(1+2) * 3
EOF
run 0 '9'
run -noerr 0 '9' -p
cat >input <<EOF
(((1)+(2))*((3)+(4)))
EOF
run 0 '21'
# Some really deep computation.
# for 4, gives 4 + (3 + (2 + (1 + (- (4 * (4 + 1)) / 2)))).
n=100
for i in $(seq 0 $n)
do
if [ "$i" -eq 0 ]; then
input="- ($n * ($n + 1)) / 2"
else
input="$i + ($input)"
fi
done
echo "$input" > input
run 0 '0'
cat >input <<EOF
() + ()
EOF
run 1 'err: syntax error, unexpected end-of-file, expecting + or - or number or string'
cat >input <<EOF
1 + $
EOF
run 1 'err: syntax error, invalid character: $
err: syntax error, unexpected end-of-line, expecting + or - or number or string'