What exactly is so bad about using next from within an eval (the one used for exception handling) that it's worth a warning?

I have a program structured something like this 

#!/usr/bin/perl -lw
use strict;
use diagnostics;

sub do_foo { die "err" if $_==2;  $_!=4 }
sub do_bar { "..." }

for (1..5) {
    eval {
        next unless do_foo();
        next unless do_bar();
        #...
        1;
    } or do {
        warn $@;
        next;
    };
    print;
}

__END__
1
err at ./test.pl line 5.

3
Exiting eval via next at ./test.pl line 10 (#1)
    (W exiting) You are exiting an eval by unconventional means, such 
+as a
    goto, or a loop control statement.
    
5

[download]

The idea is to abort the current iteration prematurely if one of the do_*() functions returned false, or if some exception occurred. In the sample code this is emulated for iteration 2 and 4.

The code seems to do what I want, and I know I can disable the warning, but I would like to know if there are any gotchas. The diagnostics message merely tells me what I'm doing, but not the reasoning behind it being a warning in the first place.

In reply to "next" from within eval {} ? by Anonymous Monk

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