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
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
#!./perl
# Check that we don't recompile runtime patterns when the pattern hasn't
# changed
#
# Works by checking the debugging output of 'use re debug' and, if
# available, -Dr. We use both to check that the different code paths
# with Perl_foo() verses the my_foo() under ext/re/ don't cause any
# changes.
use strict;
use warnings;
$| = 1;
BEGIN {
chdir 't' if -d 't';
@INC = ('../lib','.');
require './test.pl';
skip_all_if_miniperl("no dynamic loading on miniperl, no re");
}
plan tests => 36;
my $results = runperl(
switches => [ '-Dr' ],
prog => '1',
stderr => 1,
);
my $has_Dr = $results !~ /Recompile perl with -DDEBUGGING/;
my $tmpfile = tempfile();
# Check that a pattern triggers a regex compilation exactly N times,
# using either -Dr or 'use re debug'
# This is partially based on _fresh_perl() in test.pl
sub _comp_n {
my ($use_Dr, $n, $prog, $desc) = @_;
open my $tf, ">$tmpfile" or die "Cannot open $tmpfile: $!";
my $switches = [];
if ($use_Dr) {
push @$switches, '-Dr';
}
else {
$prog = qq{use re qw(debug);\n$prog};
}
print $tf $prog;
close $tf or die "Cannot close $tmpfile: $!";
my $results = runperl(
switches => $switches,
progfile => $tmpfile,
stderr => 1,
);
my $status = $?;
my $count = () = $results =~ /Final program:/g;
if ($count == $n) {
pass($desc);
}
else {
fail($desc);
_diag "# COUNT: $count EXPECTED $n\n";
_diag "# STATUS: $status\n";
_diag "# SWITCHES: @$switches\n";
_diag "# PROG: \n$prog\n";
# this is verbose; uncomment for debugging
#_diag "# OUTPUT:\n------------------\n $results-------------------\n";
}
}
# Check that a pattern triggers a regex compilation exactly N times,
sub comp_n {
my ($n, $prog, $desc) = @_;
if ($has_Dr) {
_comp_n(1, $n, $prog, "$desc -Dr");
}
else {
SKIP: {
skip("-Dr not compiled in");
}
}
_comp_n(0, @_);
}
# Check that a pattern triggers a regex compilation exactly once.
sub comp_1 {
comp_n(1, @_);
}
comp_1(<<'CODE', 'simple');
"a" =~ /$_/ for qw(a a a);
CODE
comp_1(<<'CODE', 'simple qr');
"a" =~ qr/$_/ for qw(a a a);
CODE
comp_1(<<'CODE', 'literal utf8');
"a" =~ /$_/ for "\x{100}", "\x{100}", "\x{100}";
CODE
comp_1(<<'CODE', 'literal utf8 qr');
"a" =~ qr/$_/ for "\x{100}", "\x{100}", "\x{100}";
CODE
comp_1(<<'CODE', 'longjmp literal utf8');
my $x = chr(0x80);
"a" =~ /$x$_/ for "\x{100}", "\x{100}", "\x{100}";
CODE
comp_1(<<'CODE', 'longjmp literal utf8 qr');
my $x = chr(0x80);
"a" =~ qr/$x$_/ for "\x{100}", "\x{100}", "\x{100}";
CODE
comp_1(<<'CODE', 'utf8');
"a" =~ /$_/ for '\x{100}', '\x{100}', '\x{100}';
CODE
comp_1(<<'CODE', 'utf8 qr');
"a" =~ qr/$_/ for '\x{100}', '\x{100}', '\x{100}';
CODE
comp_1(<<'CODE', 'longjmp utf8');
my $x = chr(0x80);
"a" =~ /$x$_/ for '\x{100}', '\x{100}', '\x{100}';
CODE
comp_1(<<'CODE', 'longjmp utf8');
my $x = chr(0x80);
"a" =~ qr/$x$_/ for '\x{100}', '\x{100}', '\x{100}';
CODE
comp_n(3, <<'CODE', 'mixed utf8');
"a" =~ /$_/ for "\x{c4}\x{80}", "\x{100}", "\x{c4}\x{80}";
CODE
comp_n(3, <<'CODE', 'mixed utf8 qr');
"a" =~ qr/$_/ for "\x{c4}\x{80}", "\x{100}", "\x{c4}\x{80}";
CODE
comp_n(3, <<'CODE', 'runtime code');
my $x = '(?{1})';
BEGIN { $^H |= 0x00200000 } # lightweight "use re 'eval'"
"a" =~ /a$_/ for $x, $x, $x;
CODE
comp_n(3, <<'CODE', 'runtime code qr');
my $x = '(?{1})';
BEGIN { $^H |= 0x00200000 } # lightweight "use re 'eval'"
"a" =~ qr/a$_/ for $x, $x, $x;
CODE
comp_n(4, <<'CODE', 'embedded code');
my $x = qr/(?{1})/;
"a" =~ /a$_/ for $x, $x, $x;
CODE
comp_n(4, <<'CODE', 'embedded code qr');
my $x = qr/(?{1})/;
"a" =~ qr/a$_/ for $x, $x, $x;
CODE
comp_n(4, <<'CODE', 'mixed code');
my $x = qr/(?{1})/;
my $y = '(?{1})';
BEGIN { $^H |= 0x00200000 } # lightweight "use re 'eval'"
"a" =~ /a$x$_/ for $y, $y, $y;
CODE
comp_n(4, <<'CODE', 'mixed code qr');
my $x = qr/(?{1})/;
my $y = '(?{1})';
BEGIN { $^H |= 0x00200000 } # lightweight "use re 'eval'"
"a" =~ qr/a$x$_/ for $y, $y, $y;
CODE
|
