Perrin Harkins wrote:
>
> We've actually discussed this on the list. It has to do with closures.
> Matt gave a presentation about exception handling which covers it and
> shows a workaround. You can see it here:
>
> http://axkit.org/docs/presentations/tpc2001/
Sorry to chime in a little late on this.
But the "Exceptions" slides from the page above are either misleading,
or I am misunderstainding just what exactly leaks in Error.
The slides above show a "BAD" example of Error.pm as:
sub handler {
my $r = shift;
my $count;
try {
# use $count in here...
} catch Error with {
};
}
However, the eToys article doesnt say that this is unsafe. What the
eToys article says is unsafe is code with nested try blocks like this:
my $count;
try {
...
try {
# use $count in *here*
};
};
in other words, if I understand the eToys article correctly, the leaks
only happen if I nest a try block inside another try block. I have
experimented some, and it appears to me that this is in fact the case
($count doesnt get cleaned up if there is a nested try). But as long as
I dont nest try blocks there doesnt appear to be a leak.
Are Matt's slides misleading on this point? Or am I missing something here?
Mike
