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go/test/errchk
Ian Lance Taylor f861c7f61b If the compiler dumps core, bash will print a useless error
message with the full path of the errchk script.  Catch that
by wrapping the if statement which invokes the compiler in a
subshell.  Use the $TMPOUT file as a flag to let the main
shell know whether the subshell ran.  Since the compiler
stdout and stderr are redirected, if the if statement produces
any output, then the compiler crashed, and we report that.

R=r,rsc
DELTA=14  (11 added, 1 deleted, 2 changed)
OCL=33690
CL=33692
2009-08-21 17:41:18 -07:00

91 lines
2.6 KiB
Bash
Executable File

#!/bin/bash
# Copyright 2009 The Go Authors. All rights reserved.
# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file.
# This script checks that the compilers emits the errors which we
# expect. Usage: errchk COMPILER [OPTS] SOURCEFILE. This will run
# the command COMPILER [OPTS] SOURCEFILE. The compilation is expected
# to fail; if it succeeds, this script will report an error. The
# stderr output of the compiler will be matched against comments in
# SOURCEFILE. For each line of the source file which should generate
# an error, there should be a comment of the form // ERROR "regexp".
# If the compiler generates an error for a line which has no such
# commnt, this script will report an error. Likewise if the compiler
# does not generate an error for a line which has a comment, or if the
# error message does not match the <regexp>. The <regexp> is
# interpreted by egrep.
if test $# -lt 2; then
echo 1>&2 "Usage: errchk COMPILER [OPTS] SOURCEFILE"
exit 1
fi
ARGCOUNT=$#
SOURCEFILE=${!ARGCOUNT}
TMPOUT=/tmp/errchk-out-$$
TMPERR=/tmp/errchk-err-$$
TMPALL=/tmp/errchk-all-$$
TMPTMP=/tmp/errchk-tmp-$$
TMPBUG=/tmp/errchk-bug-$$
rm -f $TMPOUT $TMPERR $TMPALL $TMPTMP $TMPBUG
trap "rm -f $TMPOUT $TMPERR $TMPALL $TMPTMP $TMPBUG" 0 1 2 3 14 15
(if $* >$TMPOUT 2>$TMPERR; then
echo 1>&4 "BUG: errchk: command succeeded unexpectedly"
cat 1>&3 $TMPOUT
cat 1>&4 $TMPERR
rm -f $TMPOUT $TMPERR
fi) 3>&1 4>&2 >$TMPTMP 2>&1
if ! test -f $TMPOUT; then
exit 0
fi
if test -s $TMPTMP; then
echo 1>&2 BUG: errchk: compiler crashed
cat $TMPOUT
cat 1>&2 $TMPERR
exit 0
fi
cat $TMPOUT $TMPERR | grep -v '^ ' > $TMPALL
bug() {
if ! test -f $TMPBUG
then
echo 1>&2 -n BUG: ''
echo >$TMPBUG
fi
}
header=0
pr -n -t $SOURCEFILE | grep '// ERROR' | while read line; do
lineno=`echo $line | sed -e 's/^[ ]*\([0-9]*\).*$/\1/'`
regexp=`echo $line | sed -e 's|.*// ERROR "\([^"]*\)".*$|\1|'`
errmsg=`grep "$SOURCEFILE:$lineno" <$TMPALL`
grep -v "$SOURCEFILE:$lineno" < $TMPALL > $TMPTMP
mv -f $TMPTMP $TMPALL
if test -z "$errmsg"; then
bug
echo 1>&2 "errchk: $SOURCEFILE:$lineno: missing expected error: '$regexp'"
elif ! echo "$errmsg" | egrep -q "$regexp"; then
bug
echo 1>&2 "errchk: $SOURCEFILE:$lineno: error message does not match '$regexp'"
echo 1>&2 $errmsg
fi
done
if test -s $TMPALL; then
bug
echo 1>&2 "errchk: $SOURCEFILE: unmatched error messages:"
echo 1>&2 "=================================================="
cat 1>&2 $TMPALL
echo 1>&2 "=================================================="
fi
exit 0