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Re: Bug in eval in pre-5.14

by $h4X4_|=73}{ (Monk)
on Jun 06, 2016 at 13:32 UTC ( [id://1164973]=note: print w/replies, xml ) Need Help??


in reply to Bug in eval in pre-5.14

There are many things you should not do with eval and those are some of them.
What I have in a code of mine still hits on the error.

#!/usr/bin/perl use warnings; use strict; print $], "\n"; { package My::Obj; sub new { my $class = shift; bless {@_}, $class } sub DESTROY { #my $self = shift; #eval { 1 } if ! $self->{finished}; } } my $o1 = 'My::Obj'->new(finished => 1); undef $o1; use Carp; # This is what I'm doing eval q^ my $o2 = 'My::Obj'->new; croak "Exception! $!"; ^; if ($@) { croak 'Caught with $@:'.$@; # change $@ to $! on this line, wow... + 5.014002 seems to work? } # Exception overlooked. eval { my $o2 = 'My::Obj'->new; die "Exception!"; }; if ($@) { warn "Caught with \$\@: $@"; } # Exception details lost. eval { my $o2 = 'My::Obj'->new; die "Exception!"; 1 } or do { warn "Caught with or: $@"; }; # Same as above. use Try::Tiny; try { my $o3 = 'My::Obj'->new; die "Exception!"; } catch { warn "Caught with Try::Tiny: $_"; };
Output:
Caught with $@:Exception! at (eval 1) line 3 eval ' my $o2 = \'My::Obj\'->new; croak "Exception! $!"; ;' called at C:\xampp\cgi-bin\Test\tester.pl line 25 at C:\xampp\cgi-bin\Test\tester.pl line 29 5.014002

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