On Tue, May 27, 2003 at 06:19:05PM +0200, Matthias Bauer wrote:
> Hi everybody,
> why is it that the following piece of code prints
> three _different_ strings (in Perl 5.8)?
>
> ------8<------------------------
> sub bla() {
> for my $i ( reverse 0 .. 5 ) {
> $i = $i + 1;
> print $i;
> }
> print "\n";
> }
>
> bla();
> bla();
> bla();
> ------>8------------------------
>
> It seems as if the array created to hold the
> returned AV of ''reverse 0..5`` is somehow
> re--used in later invocations of blah().
> Bug or feature or programming error?
Known bug. You should get a "modification of read-only value" error,
like you get if you do 'reverse 0, 1, 2, 3, 4, 5'.
Note the differences if you replace .. with a list, and whether or
not you use reverse or not:
reverse 0 .. 5 654321
765432
876543
0 .. 5 123456
123456
123456
reverse 0, 1, 2, 3, 4, 5 Modification of a read-only value attempted
0, 1, 2, 3, 4, 5 Modification of a read-only value attempted
Abigail
