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If the compiler dumps core, bash will print a useless error

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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
This commit is contained in:
Ian Lance Taylor 2009-08-21 17:41:18 -07:00
parent f50e7b156e
commit f861c7f61b
1 changed files with 13 additions and 3 deletions
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16
test/errchk
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@ -34,11 +34,21 @@ 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>&2 "BUG: errchk: command succeeded unexpectedly"
(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
rm -f $TMPOUT $TMPERR
exit 0
fi