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#!/bin/sh
# This script automatically test the given tool with the tool's test cases,
# reporting anything of interest.

# exits with 0 if there is nothing of interest
# exits with 1 if there is something interesting
# exits with 2 if an error occurred

# Give two .sum files to compare them

# Written by Mike Stump <mrs@cygnus.com>

tool=gxx

tmp1=/tmp/$tool-testing.$$a
tmp2=/tmp/$tool-testing.$$b
now_s=/tmp/$tool-testing.$$d
before_s=/tmp/$tool-testing.$$e

if [ "$2" = "" ]; then
        echo "Usage: $0 previous current" >&2
        exit 2
fi

sed 's/^XFAIL/FAIL/; s/^XPASS/PASS/' < "$1" >$tmp1
sed 's/^XFAIL/FAIL/; s/^XPASS/PASS/' < "$2" >$tmp2

before=$tmp1
now=$tmp2

exit_status=0
trap "rm -f $tmp1 $tmp2 $now_s $before_s" 0 1 2 3 5 9 13 15

sort -t ':' +1 "$now" > "$now_s"
sort -t ':' +1 "$before" > "$before_s"

grep '^FAIL:' "$now_s" | sed 's/^[^:]*:[        ]//' >$tmp1
grep '^PASS' "$before_s" | sed 's/^[^:]*:[      ]//' | comm -12 $tmp1 - >$tmp2

grep -s . $tmp2 >/dev/null
if [ $? = 0 ]; then
        echo "Tests that now fail, but worked before:"
        echo
        cat $tmp2
        echo
        exit_status=1
fi

grep '^PASS' "$now_s" | sed 's/^[^:]*:[         ]//' >$tmp1
grep '^FAIL' "$before_s" | sed 's/^[^:]*:[      ]//' | comm -12 $tmp1 - >$tmp2

grep -s . $tmp2 >/dev/null
if [ $? = 0 ]; then
        echo "Tests that now work, but didn't before:"
        echo
        cat $tmp2
        echo
fi

grep '^FAIL' "$now_s" | sed 's/^[^:]*:[         ]//' >$tmp1
grep '^[PF]A[SI][SL]' "$before_s" | sed 's/^[^:]*:[     ]//' | comm -23 $tmp1 - >$tmp2

grep -s . $tmp2 >/dev/null
if [ $? = 0 ]; then
        echo "New tests that FAIL:"
        echo
        cat $tmp2
        echo
        exit_status=1
fi

grep '^PASS' "$now_s" | sed 's/^[^:]*:[         ]//' >$tmp1
grep '^[PF]A[SI][SL]' "$before_s" | sed 's/^[^:]*:[     ]//' | comm -23 $tmp1 - >$tmp2

grep -s . $tmp2 >/dev/null
if [ $? = 0 ]; then
        echo "New tests that PASS:"
        echo
        cat $tmp2
        echo
fi

grep '^[PF]A[SI][SL]' "$now_s" | sed 's/^[^:]*:[        ]//' >$tmp1
grep '^PASS' "$before_s" | sed 's/^[^:]*:[      ]//' | comm -13 $tmp1 - >$tmp2

grep -s . $tmp2 >/dev/null
if [ $? = 0 ]; then
        echo "Old tests that passed, that have disappeared: (Eeek!)"
        echo
        cat $tmp2
        echo
fi

grep '^[PF]A[SI][SL]' "$now_s" | sed 's/^[^:]*:[        ]//' >$tmp1
grep '^FAIL' "$before_s" | sed 's/^[^:]*:[      ]//' | comm -13 $tmp1 - >$tmp2

grep -s . $tmp2 >/dev/null
if [ $? = 0 ]; then
        echo "Old tests that failed, that have disappeared: (Eeek!)"
        echo
        cat $tmp2
        echo
fi

exit $exit_status