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[perl5.git] / t / comp / hints.t
CommitLineData
dbc6b789 1#!./perl
045ac317 2
dbc6b789
RGS
3# Tests the scoping of $^H and %^H
4
c06820fb 5BEGIN {
cc7e6304 6 @INC = qw(. ../lib ../ext/re);
a817e89d 7 chdir 't' if -d 't';
c06820fb 8}
0f94e4a9 9
3607ca02 10BEGIN { print "1..31\n"; }
045ac317
RGS
11BEGIN {
12 print "not " if exists $^H{foo};
13 print "ok 1 - \$^H{foo} doesn't exist initially\n";
09337566
NC
14 if (${^OPEN}) {
15 print "not " unless $^H & 0x00020000;
16 print "ok 2 - \$^H contains HINT_LOCALIZE_HH initially with ${^OPEN}\n";
17 } else {
18 print "not " if $^H & 0x00020000;
19 print "ok 2 - \$^H doesn't contain HINT_LOCALIZE_HH initially\n";
20 }
045ac317
RGS
21}
22{
7168684c 23 # simulate a pragma -- don't forget HINT_LOCALIZE_HH
af796537 24 BEGIN { $^H |= 0x04020000; $^H{foo} = "a"; }
045ac317
RGS
25 BEGIN {
26 print "not " if $^H{foo} ne "a";
dbc6b789
RGS
27 print "ok 3 - \$^H{foo} is now 'a'\n";
28 print "not " unless $^H & 0x00020000;
29 print "ok 4 - \$^H contains HINT_LOCALIZE_HH while compiling\n";
045ac317
RGS
30 }
31 {
32 BEGIN { $^H |= 0x00020000; $^H{foo} = "b"; }
33 BEGIN {
34 print "not " if $^H{foo} ne "b";
7168684c 35 print "ok 5 - \$^H{foo} is now 'b'\n";
045ac317
RGS
36 }
37 }
38 BEGIN {
39 print "not " if $^H{foo} ne "a";
f747ebd6 40 print "ok 6 - \$^H{foo} restored to 'a'\n";
045ac317 41 }
dbc6b789
RGS
42 # The pragma settings disappear after compilation
43 # (test at CHECK-time and at run-time)
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RGS
44 CHECK {
45 print "not " if exists $^H{foo};
7168684c 46 print "ok 9 - \$^H{foo} doesn't exist when compilation complete\n";
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NC
47 if (${^OPEN}) {
48 print "not " unless $^H & 0x00020000;
49 print "ok 10 - \$^H contains HINT_LOCALIZE_HH when compilation complete with ${^OPEN}\n";
50 } else {
51 print "not " if $^H & 0x00020000;
52 print "ok 10 - \$^H doesn't contain HINT_LOCALIZE_HH when compilation complete\n";
53 }
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RGS
54 }
55 print "not " if exists $^H{foo};
7168684c 56 print "ok 11 - \$^H{foo} doesn't exist at runtime\n";
09337566
NC
57 if (${^OPEN}) {
58 print "not " unless $^H & 0x00020000;
59 print "ok 12 - \$^H contains HINT_LOCALIZE_HH at run-time with ${^OPEN}\n";
60 } else {
61 print "not " if $^H & 0x00020000;
62 print "ok 12 - \$^H doesn't contain HINT_LOCALIZE_HH at run-time\n";
63 }
dbc6b789
RGS
64 # op_entereval should keep the pragmas it was compiled with
65 eval q*
f45b078d 66 BEGIN {
dbc6b789 67 print "not " if $^H{foo} ne "a";
7168684c 68 print "ok 13 - \$^H{foo} is 'a' at eval-\"\" time\n";
dbc6b789 69 print "not " unless $^H & 0x00020000;
7168684c 70 print "ok 14 - \$^H contains HINT_LOCALIZE_HH at eval\"\"-time\n";
f45b078d 71 }
dbc6b789 72 *;
045ac317
RGS
73}
74BEGIN {
75 print "not " if exists $^H{foo};
7168684c 76 print "ok 7 - \$^H{foo} doesn't exist while finishing compilation\n";
09337566
NC
77 if (${^OPEN}) {
78 print "not " unless $^H & 0x00020000;
79 print "ok 8 - \$^H contains HINT_LOCALIZE_HH while finishing compilation with ${^OPEN}\n";
80 } else {
81 print "not " if $^H & 0x00020000;
82 print "ok 8 - \$^H doesn't contain HINT_LOCALIZE_HH while finishing compilation\n";
83 }
045ac317 84}
dfa41748 85
0282be92
RGS
86{
87 BEGIN{$^H{x}=1};
bc8f2ddd 88 for my $tno (15..16) {
0282be92 89 eval q(
f45b078d
FC
90 BEGIN {
91 print $^H{x}==1 && !$^H{y} ? "ok $tno\n" : "not ok $tno\n";
92 }
0282be92
RGS
93 $^H{y} = 1;
94 );
95 if ($@) {
96 (my $str = $@)=~s/^/# /gm;
f747ebd6 97 print "not ok $tno\n$str\n";
0282be92
RGS
98 }
99 }
100}
f747ebd6
Z
101
102{
f747ebd6
Z
103 BEGIN { $^H |= 0x04000000; $^H{foo} = "z"; }
104
105 our($ri0, $rf0); BEGIN { $ri0 = $^H; $rf0 = $^H{foo}; }
a026e652
NC
106 print +($ri0 & 0x04000000 ? "" : "not "), "ok 17 - \$^H correct before require\n";
107 print +($rf0 eq "z" ? "" : "not "), "ok 18 - \$^H{foo} correct before require\n";
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Z
108
109 our($ra1, $ri1, $rf1, $rfe1);
110 BEGIN { require "comp/hints.aux"; }
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NC
111 print +(!($ri1 & 0x04000000) ? "" : "not "), "ok 19 - \$^H cleared for require\n";
112 print +(!defined($rf1) && !$rfe1 ? "" : "not "), "ok 20 - \$^H{foo} cleared for require\n";
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Z
113
114 our($ri2, $rf2); BEGIN { $ri2 = $^H; $rf2 = $^H{foo}; }
a026e652
NC
115 print +($ri2 & 0x04000000 ? "" : "not "), "ok 21 - \$^H correct after require\n";
116 print +($rf2 eq "z" ? "" : "not "), "ok 22 - \$^H{foo} correct after require\n";
f747ebd6 117}
bc8f2ddd 118
ec34a119
DM
119# [perl #73174]
120
121{
122 my $res;
123 BEGIN { $^H{73174} = "foo" }
124 BEGIN { $res = ($^H{73174} // "") }
8ecb088b
FC
125 # /x{100}/i forces loading of utf8.pm, which used to reset %^H
126 eval '"" =~ /\x{100}/i; 1'
127 # Allow miniperl to fail this regexp compilation (effectively skip
128 # the test) in case tables have not been build, but require real
129 # perl to succeed.
130 or defined &DynaLoader::boot_DynaLoader and die;
ec34a119
DM
131 BEGIN { $res .= '-' . ($^H{73174} // "")}
132 $res .= '-' . ($^H{73174} // "");
133 print $res eq "foo-foo-" ? "" : "not ",
134 "ok 23 - \$^H{foo} correct after /unicode/i (res=$res)\n";
135}
136
95cf2368 137# [perl #106282] Crash when tying %^H
cb1f05e8
FC
138# Tying %^H should not result in a crash when the hint hash is cloned.
139# Hints should also be copied properly to inner scopes. See also
140# [rt.cpan.org #73402].
95cf2368
FC
141eval q`
142 # Do something naughty enough, and you get your module mentioned in the
143 # test suite. :-)
144 package namespace::clean::_TieHintHash;
145
146 sub TIEHASH { bless[] }
147 sub STORE { $_[0][0]{$_[1]} = $_[2] }
148 sub FETCH { $_[0][0]{$_[1]} }
149 sub FIRSTKEY { my $a = scalar keys %{$_[0][0]}; each %{$_[0][0]} }
150 sub NEXTKEY { each %{$_[0][0]} }
151
152 package main;
153
154 BEGIN {
155 $^H{foo} = "bar"; # activate localisation magic
156 tie( %^H, 'namespace::clean::_TieHintHash' ); # sabotage %^H
157 $^H{foo} = "bar"; # create an element in the tied hash
158 }
cb1f05e8
FC
159 { # clone the tied hint hash on scope entry
160 BEGIN {
161 print "not " x ($^H{foo} ne 'bar'),
162 "ok 24 - tied hint hash is copied to inner scope\n";
163 %^H = ();
164 tie( %^H, 'namespace::clean::_TieHintHash' );
165 $^H{foo} = "bar";
166 }
167 {
168 BEGIN{
169 print
170 "not " x ($^H{foo} ne 'bar'),
171 "ok 25 - tied empty hint hash is copied to inner scope\n"
172 }
173 }
174 1;
175 }
176 1;
177` or warn $@;
178print "ok 26 - no crash when cloning a tied hint hash\n";
ec34a119 179
52c7aca6
FC
180{
181 my $w;
182 local $SIG{__WARN__} = sub { $w = shift };
183 eval q`
184 package namespace::clean::_TieHintHasi;
185
186 sub TIEHASH { bless[] }
187 sub STORE { $_[0][0]{$_[1]} = $_[2] }
188 sub FETCH { $_[0][0]{$_[1]} }
189 sub FIRSTKEY { my $a = scalar keys %{$_[0][0]}; each %{$_[0][0]} }
190 # Intentionally commented out:
191 # sub NEXTKEY { each %{$_[0][0]} }
192
193 package main;
194
195 BEGIN {
196 $^H{foo} = "bar"; # activate localisation magic
197 tie( %^H, 'namespace::clean::_TieHintHasi' ); # sabotage %^H
198 $^H{foo} = "bar"; # create an element in the tied hash
199 }
200 { ; } # clone the tied hint hash
201 `;
202 print "not " if $w;
203 print "ok 27 - double-freeing explosive tied hints hash\n";
204 print "# got: $w" if $w;
205}
206
7e4f0450
FC
207# Setting ${^WARNING_HINTS} to its own value should not change things.
208{
209 my $w;
210 local $SIG{__WARN__} = sub { $w++ };
211 BEGIN {
212 # should have no effect:
213 my $x = ${^WARNING_BITS};
214 ${^WARNING_BITS} = $x;
215 }
216 {
217 local $^W = 1;
218 () = 1 + undef;
219 }
220 print "# ", $w//'no', " warnings\nnot " unless $w == 1;
221 print "ok 28 - ",
222 "setting \${^WARNING_BITS} to its own value has no effect\n";
223}
224
2653c1e3
DM
225# [perl #112326]
226# this code could cause a crash, due to PL_hints continuing to point to th
227# hints hash currently being freed
228
229{
230 package Foo;
231 my @h = qw(a 1 b 2);
232 BEGIN {
233 $^H{FOO} = bless {};
234 }
235 sub DESTROY {
236 @h = %^H;
237 delete $INC{strict}; require strict; # boom!
238 }
239 my $h = join ':', %h;
240 # this isn't the main point of the test; the main point is that
241 # it doesn't crash!
242 print "not " if $h ne '';
243 print "ok 29 - #112326\n";
244}
245
ec34a119 246
3607ca02
FC
247# [perl #112444]
248# A destructor called while %^H is freed should not be able to stop %^H
249# from being magical (due to *^H{HASH} being undef).
250{
251 BEGIN {
252 # Make sure %^H is clear and not localised, to begin with
253 %^H = ();
254 $^H = 0;
255 }
256 DESTROY { %^H }
257 {
258 {
259 BEGIN {
260 $^H{foom} = bless[];
261 }
262 } # scope exit triggers destructor, which autovivifies a non-
263 # magical %^H
264 BEGIN {
265 # Here we have the %^H created by DESTROY, which is
266 # not localised
267 $^H{112444} = 'baz';
268 }
269 } # %^H leaks on scope exit
270 BEGIN { @keez = keys %^H }
271}
272print "not " if @keez;
273print "ok 30 - %^H does not leak when autovivified in destructor\n";
274print "# keys are: @keez\n" if @keez;
275
276
bc8f2ddd
NC
277# Add new tests above this require, in case it fails.
278require './test.pl';
279
280# bug #27040: hints hash was being double-freed
281my $result = runperl(
282 prog => '$^H |= 0x20000; eval q{BEGIN { $^H |= 0x20000 }}',
283 stderr => 1
284);
285print "not " if length $result;
3607ca02 286print "ok 31 - double-freeing hints hash\n";
bc8f2ddd
NC
287print "# got: $result\n" if length $result;
288
289__END__
290# Add new tests above require 'test.pl'