open( *Parse::RecDescent::ERROR, '>', \(my $parse_error) )
	or croak("Error: unable to redirect SDTERR.");

    $Parse::RecDescent::skip = ' *\x{0} *';

    $::RD_ERRORS++;
    $::RD_WARN++;
    $::RD_HINT++;

    my $parser = Parse::RecDescent->new($grammar) or die("Bad grammar!");


##</code><code>##

use strict;

use Parse::RecDescent;

sub parse {
    my ($grammar, $str) = @_;

    open(*Parse::RecDescent::ERROR, '>', \my $error) 
        or die "Cannot open in-memory filehandle: $!";

    local $::RD_ERROR = 1;
    local $::RD_WARN = 2;

    my $p = Parse::RecDescent->new($grammar)
        or die "Grammar is invalid";

    my $x = $p->start($str);
    defined $x or die "CAPTURED: $error";

    return $x;
}

print parse('start: /foo/ | <error>', 'fo'), "\n";