`MCR $^X "-I[-.lib]" $switch $tmpfile` :
$Is_MSWin32 ?
`.\\perl -I../lib $switch $tmpfile 2>&1` :
- `sh -c './perl $switch $tmpfile' 2>&1`;
+ `./perl $switch $tmpfile 2>&1`;
my $status = $?;
$results =~ s/\n+$//;
# allow expected output to be written as if $prog is on STDIN