1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
#!./perl
BEGIN {
unshift @INC, 't';
require Config;
if (($Config::Config{'extensions'} !~ /\bB\b/) ){
print "1..0 # Skip -- Perl configured without B module\n";
exit 0;
}
}
use warnings;
use strict;
use Test::More;
BEGIN { use_ok( 'B' ); }
# Somewhat minimal tests.
my %seen;
sub B::OP::pie {
my $self = shift;
return ++$seen{$self->name};
}
my %debug;
sub B::OP::walkoptree_debug {
my $self = shift;
return ++$debug{$self->name};
}
my $victim = sub {
# This gives us a substcont, which gets to the second recursive call
# point (in the if statement in the XS code)
$_[0] =~ s/(a)/ $1/;
# PMOP_pmreplroot(cPMOPo) is NULL for this
$_[0] =~ s/(b)//;
# This gives an OP_SPLIT
split /c/;
};
is (B::walkoptree_debug, 0, 'walkoptree_debug() is 0');
B::walkoptree(B::svref_2object($victim)->ROOT, "pie");
foreach (qw(substcont split leavesub)) {
is ($seen{$_}, 1, "Our victim had a $_ OP");
}
is_deeply ([keys %debug], [], 'walkoptree_debug was not called');
B::walkoptree_debug(2);
is (B::walkoptree_debug, 1, 'walkoptree_debug() is 1');
%seen = ();
B::walkoptree(B::svref_2object($victim)->ROOT, "pie");
foreach (qw(substcont split leavesub)) {
is ($seen{$_}, 1, "Our victim had a $_ OP");
}
is_deeply (\%debug, \%seen, 'walkoptree_debug was called correctly');
my %seen2;
# Now try to exercise the code in walkoptree that decides that it can't re-use
# the object and reference.
sub B::OP::fiddle {
my $name = $_[0]->name;
++$seen2{$name};
if ($name =~ /^s/) {
# Take another reference to the reference
push @::junk, \$_[0];
} elsif ($name =~ /^p/) {
# Take another reference to the object
push @::junk, \${$_[0]};
} elsif ($name =~ /^l/) {
undef $_[0];
} elsif ($name =~ /g/) {
${$_[0]} = "Muhahahahaha!";
} elsif ($name =~ /^c/) {
bless \$_[0];
}
}
B::walkoptree(B::svref_2object($victim)->ROOT, "fiddle");
is_deeply (\%seen2, \%seen, 'everything still seen');
done_testing();
|
