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|
#!./perl -w
chdir 't' if -d 't';
@INC = '../lib';
require './test.pl';
use strict;
$|=1;
run_multiple_progs('', \*DATA);
foreach my $code ('sub;', 'sub ($) ;', '{ $x = sub }', 'sub ($) && 1') {
eval $code;
like($@, qr/^Illegal declaration of anonymous subroutine at/,
"'$code' is illegal");
}
{
local $::TODO;
$::TODO = 'RT #17589 not completely resolved';
# Here's a patch. It makes "sub;" and similar report an error immediately
# from the lexer. However the solution is not complete, it doesn't
# handle the case "sub ($) : lvalue;" (marked as a TODO test), because
# it's handled by the lexer in separate tokens, hence more difficult to
# work out.
my $code = 'sub ($) : lvalue;';
eval $code;
like($@, qr/^Illegal declaration of anonymous subroutine at/,
"'$code' is illegal");
}
eval "sub #foo\n{print 1}";
is($@, '');
done_testing();
__END__
sub X {
my $n = "ok 1\n";
sub { print $n };
}
my $x = X();
undef &X;
$x->();
EXPECT
ok 1
########
sub X {
my $n = "ok 1\n";
sub {
my $dummy = $n; # eval can't close on $n without internal reference
eval 'print $n';
die $@ if $@;
};
}
my $x = X();
undef &X;
$x->();
EXPECT
ok 1
########
sub X {
my $n = "ok 1\n";
eval 'sub { print $n }';
}
my $x = X();
die $@ if $@;
undef &X;
$x->();
EXPECT
ok 1
########
sub X;
sub X {
my $n = "ok 1\n";
eval 'sub Y { my $p = shift; $p->() }';
die $@ if $@;
Y(sub { print $n });
}
X();
EXPECT
ok 1
########
print sub { return "ok 1\n" } -> ();
EXPECT
ok 1
########
# [perl #71154] undef &$code makes $code->() die with: Not a CODE reference
sub __ANON__ { print "42\n" }
undef &{$x=sub{}};
$x->();
EXPECT
Undefined subroutine called at - line 4.
########
# NAME anon constant clobbering __ANON__
sub __ANON__ { "42\n" }
print __ANON__;
sub(){3};
EXPECT
42
########
# NAME undef &anon giving it a freed GV
$_ = sub{};
delete $::{__ANON__};
undef &$_; # SvREFCNT_dec + inc on a GV with a refcnt of 1
# so now SvTYPE(CvGV(anon)) is 0xff == freed
if (!eval { require B }) { # miniperl, presumably
print "__ANON__\n";
} else {
print B::svref_2object($_)->GV->NAME, "\n";
}
EXPECT
__ANON__
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