I don't think this particular eval is likely to suffer from the issues you mentioned.

True, in this case it's probably fine. But I think it's still a good habit to get into - even seemingly innocent pieces of code can trigger the problematic behavior:

eval { $foo = `some_bad_command` or die "blam" };
warn $@ if $@;

[download]

won't print anything if $foo happened to be an object with the problematic DESTROY on a problematic version of Perl.

The following doesn't print anything until Perl v5.26.0.

use strict;

sub Foo::DESTROY { eval { 1 } }

my $foo = bless {}, 'Foo';

eval { $foo = `some_bad_command` or die "blam" };
warn $@ if $@;

[download]

(Interestingly, according to a bisect, the commit that changed this behavior is a0833292cf, which has nothing to do with fixing $@ issues, so it appears to just be a side effect.)

In reply to Re^3: how to stop command by haukex
in thread how to stop command by dideod.yang

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