Cache::Memcached - pos() weirdness

Dave Evans
Sun, 18 Jul 2004 08:42:32 +0100

Brad Fitzpatrick wrote:
> This is still hanging around my inbox, but I feel dirty applying it
> without knowing the real problem.  (which I suspect is Perl's fault)

Agreed on both counts.

> Dave:  can you test this one-liner instead:
> From:> my $p = pos($buf{$sock});
> To: > my $p = pos($buf{$sock}) || length($&);
> That way it shouldn't slow down or otherwise affect anything except on
> broken taint systems.

Actually if you don't mind I shan't bother trying that change, because
it /would/ slow a lot of things down - see "$&" in "man perlvar":
	The use of this variable anywhere in a program imposes a considerable
performance penalty on all regular expression matches.

My current favourite patch for the problem is here:

Feedback appreciated!



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