This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
Stop renamed packages from making reset() crash
[perl5.git] / t / op / reset.t
CommitLineData
2f3c5f77
NC
1#!./perl -w
2
3BEGIN {
4 chdir 't' if -d 't';
5 @INC = '../lib';
6 require './test.pl';
7}
8use strict;
9
23083432 10plan tests => 30;
2f3c5f77
NC
11
12package aiieee;
13
14sub zlopp {
725a61d7 15 (shift =~ m?zlopp?) ? 1 : 0;
2f3c5f77
NC
16}
17
18sub reset_zlopp {
19 reset;
20}
21
22package CLINK;
23
24sub ZZIP {
725a61d7 25 shift =~ m?ZZIP? ? 1 : 0;
2f3c5f77
NC
26}
27
28sub reset_ZZIP {
29 reset;
30}
31
32package main;
33
34is(aiieee::zlopp(""), 0, "mismatch doesn't match");
35is(aiieee::zlopp("zlopp"), 1, "match matches first time");
36is(aiieee::zlopp(""), 0, "mismatch doesn't match");
37is(aiieee::zlopp("zlopp"), 0, "match doesn't match second time");
38aiieee::reset_zlopp();
39is(aiieee::zlopp("zlopp"), 1, "match matches after reset");
40is(aiieee::zlopp(""), 0, "mismatch doesn't match");
41
42aiieee::reset_zlopp();
43
44is(aiieee::zlopp(""), 0, "mismatch doesn't match");
45is(aiieee::zlopp("zlopp"), 1, "match matches first time");
46is(CLINK::ZZIP(""), 0, "mismatch doesn't match");
47is(CLINK::ZZIP("ZZIP"), 1, "match matches first time");
48is(CLINK::ZZIP(""), 0, "mismatch doesn't match");
49is(CLINK::ZZIP("ZZIP"), 0, "match doesn't match second time");
50is(aiieee::zlopp(""), 0, "mismatch doesn't match");
51is(aiieee::zlopp("zlopp"), 0, "match doesn't match second time");
52
53aiieee::reset_zlopp();
54is(aiieee::zlopp("zlopp"), 1, "match matches after reset");
55is(aiieee::zlopp(""), 0, "mismatch doesn't match");
56
57is(CLINK::ZZIP(""), 0, "mismatch doesn't match");
58is(CLINK::ZZIP("ZZIP"), 0, "match doesn't match third time");
59
60CLINK::reset_ZZIP();
61is(CLINK::ZZIP("ZZIP"), 1, "match matches after reset");
62is(CLINK::ZZIP(""), 0, "mismatch doesn't match");
a1f22e0c 63
ca826051
FC
64sub match_foo{
65 "foo" =~ m?foo?;
66}
67match_foo();
68reset "";
69ok !match_foo(), 'reset "" leaves patterns alone [perl #97958]';
70
71$scratch::a = "foo";
72$scratch::a2 = "bar";
73$scratch::b = "baz";
74package scratch { reset "a" }
75is join("-", $scratch::a//'u', $scratch::a2//'u', $scratch::b//'u'),
76 "u-u-baz",
77 'reset "char"';
78
79$scratch::a = "foo";
80$scratch::a2 = "bar";
81$scratch::b = "baz";
82$scratch::c = "sea";
83package scratch { reset "bc" }
84is join("-", $scratch::a//'u', $scratch::a2//'u', $scratch::b//'u',
85 $scratch::c//'u'),
86 "foo-bar-u-u",
87 'reset "chars"';
88
89$scratch::a = "foo";
90$scratch::a2 = "bar";
91$scratch::b = "baz";
92$scratch::c = "sea";
93package scratch { reset "a-b" }
94is join("-", $scratch::a//'u', $scratch::a2//'u', $scratch::b//'u',
95 $scratch::c//'u'),
96 "u-u-u-sea",
97 'reset "range"';
98
99{ no strict; ${"scratch::\0foo"} = "bar" }
100$scratch::a = "foo";
101package scratch { reset "\0a" }
102is join("-", $scratch::a//'u', do { no strict; ${"scratch::\0foo"} }//'u'),
103 "u-u",
104 'reset "\0char"';
105
23083432
FC
106# This used to crash under threaded builds, because pmops were remembering
107# their stashes by name, rather than by pointer.
108fresh_perl_is( # it crashes more reliably with a smaller script
109 'package bar;
110 sub foo {
111 m??;
112 BEGIN { *baz:: = *bar::; *bar:: = *foo:: }
113 # The name "bar" no langer refers to the same package
114 }
115 undef &foo; # so freeing the op does not remove it from the stash’s list
116 $_ = "";
117 push @_, ($_) x 10000; # and its memory is scribbled over
118 reset; # so reset on the original package tries to reset an invalid op
119 print "ok\n";',
120 "ok\n", {},
121 "no crash if package is effectively renamed before op is freed");
122
a1f22e0c
NC
123
124undef $/;
125my $prog = <DATA>;
126
127SKIP:
128{
129 eval {require threads; 1} or
130 skip "No threads", 4;
a1f22e0c
NC
131 foreach my $eight ('/', '?') {
132 foreach my $nine ('/', '?') {
133 my $copy = $prog;
134 $copy =~ s/8/$eight/gm;
135 $copy =~ s/9/$nine/gm;
136 fresh_perl_is($copy, "pass", "",
137 "first pattern $eight$eight, second $nine$nine");
138 }
139 }
140}
141
142__DATA__
143#!perl
144use warnings;
145use strict;
146
147# Note that there are no digits in this program, other than the placeholders
148sub a {
725a61d7 149m8one8;
a1f22e0c
NC
150}
151sub b {
725a61d7 152m9two9;
a1f22e0c
NC
153}
154
155use threads;
156use threads::shared;
157
158sub wipe {
ff8b4a37 159 eval 'no warnings; sub b {}; 1' or die $@;
a1f22e0c
NC
160}
161
162sub lock_then_wipe {
163 my $l_r = shift;
164 lock $$l_r;
165 cond_wait($$l_r) until $$l_r eq "B";
166 wipe;
167 $$l_r = "C";
168 cond_signal $$l_r;
169}
170
171my $lock : shared = "A";
172my $r = \$lock;
173
174my $t;
175{
176 lock $$r;
177 $t = threads->new(\&lock_then_wipe, $r);
178 wipe;
179 $lock = "B";
180 cond_signal $lock;
181}
182
183{
184 lock $lock;
185 cond_wait($lock) until $lock eq "C";
186 reset;
187}
188
189$t->join;
190print "pass\n";