eval-line-bug

来自「source of perl for linux application,」· 代码 · 共 25 行

#!/usr/bin/perl
#
# This code is used by lib/perl5db.t !!!
#

my $i = 5;
eval "
#line 5 script.pl
\$i = 10;
";

for my $q (1 .. 10) {
    $i += $q;
}

sub factorial
{
    my $i = shift;
    return +($i < 2) ? 1 : $i*factorial($i-1);
}

my $j = 4;
$j = factorial($j);
$j = factorial(10);