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Small efficiency nit for regcurly()
[perl5.git] / t / op / ref.t
CommitLineData
79072805
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1#!./perl
2
20274adc
JH
3BEGIN {
4 chdir 't' if -d 't';
b5fe401b 5 @INC = qw(. ../lib);
20274adc
JH
6}
7
b2ce0fda 8require 'test.pl';
e24631be 9use strict qw(refs subs);
f0826785 10use re ();
79072805 11
57ef47cc 12plan(197);
805232b4 13
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14# Test glob operations.
15
1c509eb9
NC
16$bar = "one";
17$foo = "two";
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18{
19 local(*foo) = *bar;
1c509eb9 20 is($foo, 'one');
79072805 21}
1c509eb9 22is ($foo, 'two');
79072805 23
1c509eb9
NC
24$baz = "three";
25$foo = "four";
79072805
LW
26{
27 local(*foo) = 'baz';
1c509eb9 28 is ($foo, 'three');
79072805 29}
1c509eb9 30is ($foo, 'four');
79072805 31
1c509eb9 32$foo = "global";
79072805
LW
33{
34 local(*foo);
1c509eb9
NC
35 is ($foo, undef);
36 $foo = "local";
37 is ($foo, 'local');
79072805 38}
1c509eb9 39is ($foo, 'global');
79072805 40
e24631be
NC
41{
42 no strict 'refs';
79072805
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43# Test fake references.
44
e24631be
NC
45 $baz = "valid";
46 $bar = 'baz';
47 $foo = 'bar';
48 is ($$$foo, 'valid');
49}
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LW
50
51# Test real references.
52
53$FOO = \$BAR;
54$BAR = \$BAZ;
1c509eb9
NC
55$BAZ = "hit";
56is ($$$FOO, 'hit');
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57
58# Test references to real arrays.
59
1c509eb9
NC
60my $test = curr_test();
61@ary = ($test,$test+1,$test+2,$test+3);
79072805
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62$ref[0] = \@a;
63$ref[1] = \@b;
64$ref[2] = \@c;
65$ref[3] = \@d;
66for $i (3,1,2,0) {
67 push(@{$ref[$i]}, "ok $ary[$i]\n");
68}
69print @a;
70print ${$ref[1]}[0];
71print @{$ref[2]}[0];
e24631be
NC
72{
73 no strict 'refs';
74 print @{'d'};
75}
1c509eb9 76curr_test($test+4);
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77
78# Test references to references.
79
80$refref = \\$x;
1c509eb9
NC
81$x = "Good";
82is ($$$refref, 'Good');
79072805
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83
84# Test nested anonymous lists.
85
86$ref = [[],2,[3,4,5,]];
1c509eb9
NC
87is (scalar @$ref, 3);
88is ($$ref[1], 2);
89is (${$$ref[2]}[2], 5);
90is (scalar @{$$ref[0]}, 0);
79072805 91
1c509eb9
NC
92is ($ref->[1], 2);
93is ($ref->[2]->[0], 3);
79072805
LW
94
95# Test references to hashes of references.
96
97$refref = \%whatever;
98$refref->{"key"} = $ref;
1c509eb9 99is ($refref->{"key"}->[2]->[0], 3);
79072805 100
93a17b20 101# Test to see if anonymous subarrays spring into existence.
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102
103$spring[5]->[0] = 123;
104$spring[5]->[1] = 456;
105push(@{$spring[5]}, 789);
1c509eb9 106is (join(':',@{$spring[5]}), "123:456:789");
79072805 107
93a17b20 108# Test to see if anonymous subhashes spring into existence.
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109
110@{$spring2{"foo"}} = (1,2,3);
111$spring2{"foo"}->[3] = 4;
1c509eb9 112is (join(':',@{$spring2{"foo"}}), "1:2:3:4");
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113
114# Test references to subroutines.
115
1c509eb9
NC
116{
117 my $called;
118 sub mysub { $called++; }
119 $subref = \&mysub;
120 &$subref;
121 is ($called, 1);
122}
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123
124$subrefref = \\&mysub2;
1c509eb9
NC
125is ($$subrefref->("GOOD"), "good");
126sub mysub2 { lc shift }
79072805 127
f0826785
BM
128# Test REGEXP assignment
129
130{
131 my $x = qr/x/;
132 my $str = "$x"; # regex stringification may change
133
134 my $y = $$x;
135 is ($y, $str, "bare REGEXP stringifies correctly");
136 ok (eval { "x" =~ $y }, "bare REGEXP matches correctly");
137
138 my $z = \$y;
139 ok (re::is_regexp($z), "new ref to REXEXP passes is_regexp");
140 is ($z, $str, "new ref to REGEXP stringifies correctly");
141 ok (eval { "x" =~ $z }, "new ref to REGEXP matches correctly");
142}
143{
144 my ($x, $str);
145 {
146 my $y = qr/x/;
147 $str = "$y";
148 $x = $$y;
149 }
150 is ($x, $str, "REGEXP keeps a ref to its mother_re");
151 ok (eval { "x" =~ $x }, "REGEXP with mother_re still matches");
152}
153
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154# Test the ref operator.
155
6e592b3a
BM
156sub PVBM () { 'foo' }
157{ my $dummy = index 'foo', PVBM }
158
159my $pviv = 1; "$pviv";
160my $pvnv = 1.0; "$pvnv";
161my $x;
162
163# we don't test
164# tied lvalue => SCALAR, as we haven't tested tie yet
165# BIND, 'cos we can't create them yet
166# REGEXP, 'cos that requires overload or Scalar::Util
167# LVALUE ref, 'cos I can't work out how to create one :)
168
169for (
170 [ 'undef', SCALAR => \undef ],
171 [ 'constant IV', SCALAR => \1 ],
172 [ 'constant NV', SCALAR => \1.0 ],
173 [ 'constant PV', SCALAR => \'f' ],
174 [ 'scalar', SCALAR => \$x ],
175 [ 'PVIV', SCALAR => \$pviv ],
176 [ 'PVNV', SCALAR => \$pvnv ],
177 [ 'PVMG', SCALAR => \$0 ],
178 [ 'PVBM', SCALAR => \PVBM ],
179 [ 'vstring', VSTRING => \v1 ],
180 [ 'ref', REF => \\1 ],
181 [ 'lvalue', LVALUE => \substr($x, 0, 0) ],
182 [ 'named array', ARRAY => \@ary ],
183 [ 'anon array', ARRAY => [ 1 ] ],
184 [ 'named hash', HASH => \%whatever ],
185 [ 'anon hash', HASH => { a => 1 } ],
186 [ 'named sub', CODE => \&mysub, ],
187 [ 'anon sub', CODE => sub { 1; } ],
188 [ 'glob', GLOB => \*foo ],
189 [ 'format', FORMAT => *STDERR{FORMAT} ],
190) {
191 my ($desc, $type, $ref) = @$_;
192 is (ref $ref, $type, "ref() for ref to $desc");
193 like ("$ref", qr/^$type\(0x[0-9a-f]+\)$/, "stringify for ref to $desc");
194}
195
d963bf01
NC
196is (ref *STDOUT{IO}, 'IO::File', 'IO refs are blessed into IO::File');
197like (*STDOUT{IO}, qr/^IO::File=IO\(0x[0-9a-f]+\)$/,
6e592b3a 198 'stringify for IO refs');
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199
200# Test anonymous hash syntax.
201
202$anonhash = {};
1c509eb9 203is (ref $anonhash, 'HASH');
e24631be 204$anonhash2 = {FOO => 'BAR', ABC => 'XYZ',};
1c509eb9 205is (join('', sort values %$anonhash2), 'BARXYZ');
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206
207# Test bless operator.
208
209package MYHASH;
210
211$object = bless $main'anonhash2;
1c509eb9
NC
212main::is (ref $object, 'MYHASH');
213main::is ($object->{ABC}, 'XYZ');
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214
215$object2 = bless {};
1c509eb9 216main::is (ref $object2, 'MYHASH');
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217
218# Test ordinary call on object method.
219
1c509eb9 220&mymethod($object,"argument");
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221
222sub mymethod {
223 local($THIS, @ARGS) = @_;
ed6116ce 224 die 'Got a "' . ref($THIS). '" instead of a MYHASH'
e24631be 225 unless ref $THIS eq 'MYHASH';
1c509eb9
NC
226 main::is ($ARGS[0], "argument");
227 main::is ($THIS->{FOO}, 'BAR');
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228}
229
230# Test automatic destructor call.
231
1c509eb9 232$string = "bad";
79072805 233$object = "foo";
1c509eb9 234$string = "good";
79072805 235$main'anonhash2 = "foo";
8990e307 236$string = "";
79072805 237
ed6116ce 238DESTROY {
8990e307 239 return unless $string;
1c509eb9 240 main::is ($string, 'good');
79072805 241
a0d0e21e 242 # Test that the object has not already been "cursed".
1c509eb9 243 main::isnt (ref shift, 'HASH');
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244}
245
246# Now test inheritance of methods.
247
248package OBJ;
249
e24631be 250@ISA = ('BASEOBJ');
79072805 251
e24631be 252$main'object = bless {FOO => 'foo', BAR => 'bar'};
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253
254package main;
255
256# Test arrow-style method invocation.
257
e24631be 258is ($object->doit("BAR"), 'bar');
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259
260# Test indirect-object-style method invocation.
261
262$foo = doit $object "FOO";
e24631be 263main::is ($foo, 'foo');
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LW
264
265sub BASEOBJ'doit {
266 local $ref = shift;
e24631be 267 die "Not an OBJ" unless ref $ref eq 'OBJ';
748a9306 268 $ref->{shift()};
79072805 269}
8990e307 270
a0d0e21e
LW
271package UNIVERSAL;
272@ISA = 'LASTCHANCE';
273
274package LASTCHANCE;
805232b4 275sub foo { main::is ($_[1], 'works') }
a0d0e21e
LW
276
277package WHATEVER;
805232b4 278foo WHATEVER "works";
a0d0e21e 279
58e0a6ae
GS
280#
281# test the \(@foo) construct
282#
283package main;
fb53bbb2 284@foo = \(1..3);
58e0a6ae
GS
285@bar = \(@foo);
286@baz = \(1,@foo,@bar);
805232b4
NC
287is (scalar (@bar), 3);
288is (scalar grep(ref($_), @bar), 3);
289is (scalar (@baz), 3);
58e0a6ae 290
fb53bbb2 291my(@fuu) = \(1..2,3);
58e0a6ae
GS
292my(@baa) = \(@fuu);
293my(@bzz) = \(1,@fuu,@baa);
805232b4
NC
294is (scalar (@baa), 3);
295is (scalar grep(ref($_), @baa), 3);
296is (scalar (@bzz), 3);
58e0a6ae 297
75ea820e
SM
298# also, it can't be an lvalue
299eval '\\($x, $y) = (1, 2);';
805232b4 300like ($@, qr/Can\'t modify.*ref.*in.*assignment/);
75ea820e 301
bc44cdaf 302# test for proper destruction of lexical objects
1c509eb9 303$test = curr_test();
805232b4
NC
304sub larry::DESTROY { print "# larry\nok $test\n"; }
305sub curly::DESTROY { print "# curly\nok ", $test + 1, "\n"; }
306sub moe::DESTROY { print "# moe\nok ", $test + 2, "\n"; }
bc44cdaf
GS
307
308{
309 my ($joe, @curly, %larry);
310 my $moe = bless \$joe, 'moe';
311 my $curly = bless \@curly, 'curly';
312 my $larry = bless \%larry, 'larry';
313 print "# leaving block\n";
314}
315
316print "# left block\n";
805232b4 317curr_test($test + 3);
bc44cdaf 318
fb73857a
PP
319# another glob test
320
805232b4
NC
321
322$foo = "garbage";
fb73857a 323{ local(*bar) = "foo" }
805232b4 324$bar = "glob 3";
fb73857a 325local(*bar) = *bar;
805232b4 326is ($bar, "glob 3");
fb73857a 327
805232b4 328$var = "glob 4";
d4010388 329$_ = \$var;
805232b4 330is ($$_, 'glob 4');
d4010388 331
4e8e7886 332
805232b4
NC
333# test if reblessing during destruction results in more destruction
334$test = curr_test();
4e8e7886
GS
335{
336 package A;
337 sub new { bless {}, shift }
805232b4 338 DESTROY { print "# destroying 'A'\nok ", $test + 1, "\n" }
8bac7e00 339 package _B;
4e8e7886 340 sub new { bless {}, shift }
805232b4 341 DESTROY { print "# destroying '_B'\nok $test\n"; bless shift, 'A' }
4e8e7886 342 package main;
8bac7e00 343 my $b = _B->new;
4e8e7886 344}
805232b4 345curr_test($test + 2);
4e8e7886
GS
346
347# test if $_[0] is properly protected in DESTROY()
348
349{
805232b4 350 my $test = curr_test();
4e8e7886
GS
351 my $i = 0;
352 local $SIG{'__DIE__'} = sub {
353 my $m = shift;
354 if ($i++ > 4) {
805232b4 355 print "# infinite recursion, bailing\nnot ok $test\n";
4e8e7886
GS
356 exit 1;
357 }
805232b4 358 like ($m, qr/^Modification of a read-only/);
4e8e7886
GS
359 };
360 package C;
361 sub new { bless {}, shift }
362 DESTROY { $_[0] = 'foo' }
363 {
364 print "# should generate an error...\n";
365 my $c = C->new;
366 }
367 print "# good, didn't recurse\n";
368}
369
0dd88869 370# test if refgen behaves with autoviv magic
0dd88869
GS
371{
372 my @a;
805232b4
NC
373 $a[1] = "good";
374 my $got;
375 for (@a) {
376 $got .= ${\$_};
377 $got .= ';';
378 }
379 is ($got, ";good;");
0dd88869
GS
380}
381
840a7b70
IZ
382# This test is the reason for postponed destruction in sv_unref
383$a = [1,2,3];
384$a = $a->[1];
805232b4 385is ($a, 2);
840a7b70 386
04ca4930
NC
387# This test used to coredump. The BEGIN block is important as it causes the
388# op that created the constant reference to be freed. Hence the only
389# reference to the constant string "pass" is in $a. The hack that made
390# sure $a = $a->[1] would work didn't work with references to constants.
391
04ca4930
NC
392
393foreach my $lexical ('', 'my $a; ') {
394 my $expect = "pass\n";
395 my $result = runperl (switches => ['-wl'], stderr => 1,
396 prog => $lexical . 'BEGIN {$a = \q{pass}}; $a = $$a; print $a');
397
805232b4
NC
398 is ($?, 0);
399 is ($result, $expect);
840a7b70
IZ
400}
401
e24631be 402$test = curr_test();
04ca4930
NC
403sub x::DESTROY {print "ok ", $test + shift->[0], "\n"}
404{ my $a1 = bless [3],"x";
405 my $a2 = bless [2],"x";
406 { my $a3 = bless [1],"x";
407 my $a4 = bless [0],"x";
408 567;
409 }
410}
805232b4
NC
411curr_test($test+4);
412
413is (runperl (switches=>['-l'],
414 prog=> 'print 1; print qq-*$\*-;print 1;'),
415 "1\n*\n*\n1\n");
b2ce0fda 416
39cff0d9
AE
417# bug #21347
418
419runperl(prog => 'sub UNIVERSAL::AUTOLOAD { qr// } a->p' );
805232b4 420is ($?, 0, 'UNIVERSAL::AUTOLOAD called when freeing qr//');
39cff0d9 421
7b102d90 422runperl(prog => 'sub UNIVERSAL::DESTROY { warn } bless \$a, A', stderr => 1);
805232b4 423is ($?, 0, 'warn called inside UNIVERSAL::DESTROY');
7b102d90 424
23bb1b96
DM
425
426# bug #22719
427
428runperl(prog => 'sub f { my $x = shift; *z = $x; } f({}); f();');
805232b4 429is ($?, 0, 'coredump on typeglob = (SvRV && !SvROK)');
23bb1b96 430
ec5f3c78
DM
431# bug #27268: freeing self-referential typeglobs could trigger
432# "Attempt to free unreferenced scalar" warnings
433
805232b4 434is (runperl(
3d7a9343 435 prog => 'use Symbol;my $x=bless \gensym,q{t}; print;*$$x=$x',
ec5f3c78 436 stderr => 1
805232b4 437), '', 'freeing self-referential typeglob');
23bb1b96 438
804ffa60
DM
439# using a regex in the destructor for STDOUT segfaulted because the
440# REGEX pad had already been freed (ithreads build only). The
441# object is required to trigger the early freeing of GV refs to to STDOUT
442
ff26e4c8
CB
443TODO: {
444 local $TODO = "works but output through pipe is mangled" if $^O eq 'VMS';
445 like (runperl(
3d7a9343 446 prog => '$x=bless[]; sub IO::Handle::DESTROY{$_=q{bad};s/bad/ok/;print}',
ff26e4c8
CB
447 stderr => 1
448 ), qr/^(ok)+$/, 'STDOUT destructor');
449}
804ffa60 450
512d1826
NC
451TODO: {
452 no strict 'refs';
453 $name8 = chr 163;
454 $name_utf8 = $name8 . chr 256;
455 chop $name_utf8;
456
457 is ($$name8, undef, 'Nothing before we start');
458 is ($$name_utf8, undef, 'Nothing before we start');
459 $$name8 = "Pound";
460 is ($$name8, "Pound", 'Accessing via 8 bit symref works');
461 local $TODO = "UTF8 mangled in symrefs";
462 is ($$name_utf8, "Pound", 'Accessing via UTF8 symref works');
463}
464
465TODO: {
466 no strict 'refs';
467 $name_utf8 = $name = chr 9787;
468 utf8::encode $name_utf8;
469
470 is (length $name, 1, "Name is 1 char");
471 is (length $name_utf8, 3, "UTF8 representation is 3 chars");
472
473 is ($$name, undef, 'Nothing before we start');
474 is ($$name_utf8, undef, 'Nothing before we start');
475 $$name = "Face";
476 is ($$name, "Face", 'Accessing via Unicode symref works');
477 local $TODO = "UTF8 mangled in symrefs";
478 is ($$name_utf8, undef,
479 'Accessing via the UTF8 byte sequence gives nothing');
480}
481
431529db 482{
512d1826
NC
483 no strict 'refs';
484 $name1 = "\0Chalk";
485 $name2 = "\0Cheese";
486
487 isnt ($name1, $name2, "They differ");
488
431529db 489 is ($$name1, undef, 'Nothing before we start (scalars)');
512d1826 490 is ($$name2, undef, 'Nothing before we start');
b3d904f3 491 $$name1 = "Yummy";
512d1826 492 is ($$name1, "Yummy", 'Accessing via the correct name works');
512d1826
NC
493 is ($$name2, undef,
494 'Accessing via a different NUL-containing name gives nothing');
fc4809d7
NC
495 # defined uses a different code path
496 ok (defined $$name1, 'defined via the correct name works');
497 ok (!defined $$name2,
498 'defined via a different NUL-containing name gives nothing');
431529db
NC
499
500 is ($name1->[0], undef, 'Nothing before we start (arrays)');
501 is ($name2->[0], undef, 'Nothing before we start');
502 $name1->[0] = "Yummy";
503 is ($name1->[0], "Yummy", 'Accessing via the correct name works');
504 is ($name2->[0], undef,
505 'Accessing via a different NUL-containing name gives nothing');
fc4809d7
NC
506 ok (defined $name1->[0], 'defined via the correct name works');
507 ok (!defined$name2->[0],
508 'defined via a different NUL-containing name gives nothing');
431529db
NC
509
510 my (undef, $one) = @{$name1}[2,3];
511 my (undef, $two) = @{$name2}[2,3];
512 is ($one, undef, 'Nothing before we start (array slices)');
513 is ($two, undef, 'Nothing before we start');
514 @{$name1}[2,3] = ("Very", "Yummy");
515 (undef, $one) = @{$name1}[2,3];
516 (undef, $two) = @{$name2}[2,3];
517 is ($one, "Yummy", 'Accessing via the correct name works');
518 is ($two, undef,
519 'Accessing via a different NUL-containing name gives nothing');
fc4809d7
NC
520 ok (defined $one, 'defined via the correct name works');
521 ok (!defined $two,
522 'defined via a different NUL-containing name gives nothing');
431529db
NC
523
524 is ($name1->{PWOF}, undef, 'Nothing before we start (hashes)');
525 is ($name2->{PWOF}, undef, 'Nothing before we start');
526 $name1->{PWOF} = "Yummy";
527 is ($name1->{PWOF}, "Yummy", 'Accessing via the correct name works');
528 is ($name2->{PWOF}, undef,
529 'Accessing via a different NUL-containing name gives nothing');
fc4809d7
NC
530 ok (defined $name1->{PWOF}, 'defined via the correct name works');
531 ok (!defined $name2->{PWOF},
532 'defined via a different NUL-containing name gives nothing');
431529db
NC
533
534 my (undef, $one) = @{$name1}{'SNIF', 'BEEYOOP'};
535 my (undef, $two) = @{$name2}{'SNIF', 'BEEYOOP'};
536 is ($one, undef, 'Nothing before we start (hash slices)');
537 is ($two, undef, 'Nothing before we start');
538 @{$name1}{'SNIF', 'BEEYOOP'} = ("Very", "Yummy");
539 (undef, $one) = @{$name1}{'SNIF', 'BEEYOOP'};
540 (undef, $two) = @{$name2}{'SNIF', 'BEEYOOP'};
541 is ($one, "Yummy", 'Accessing via the correct name works');
542 is ($two, undef,
543 'Accessing via a different NUL-containing name gives nothing');
fc4809d7
NC
544 ok (defined $one, 'defined via the correct name works');
545 ok (!defined $two,
546 'defined via a different NUL-containing name gives nothing');
431529db
NC
547
548 $name1 = "Left"; $name2 = "Left\0Right";
549 my $glob2 = *{$name2};
550
88e5f542 551 is ($glob1, undef, "We get different typeglobs. In fact, undef");
780a5241
NC
552
553 *{$name1} = sub {"One"};
554 *{$name2} = sub {"Two"};
555
556 is (&{$name1}, "One");
557 is (&{$name2}, "Two");
512d1826
NC
558}
559
9a9798c2
YST
560# test derefs after list slice
561
562is ( ({foo => "bar"})[0]{foo}, "bar", 'hash deref from list slice w/o ->' );
563is ( ({foo => "bar"})[0]->{foo}, "bar", 'hash deref from list slice w/ ->' );
564is ( ([qw/foo bar/])[0][1], "bar", 'array deref from list slice w/o ->' );
565is ( ([qw/foo bar/])[0]->[1], "bar", 'array deref from list slice w/ ->' );
566is ( (sub {"bar"})[0](), "bar", 'code deref from list slice w/o ->' );
567is ( (sub {"bar"})[0]->(), "bar", 'code deref from list slice w/ ->' );
568
569# deref on empty list shouldn't autovivify
570{
571 local $@;
572 eval { ()[0]{foo} };
573 like ( "$@", "Can't use an undefined value as a HASH reference",
574 "deref of undef from list slice fails" );
575}
576
cbae9b9f
YST
577# test dereferencing errors
578{
2d905216
NC
579 format STDERR =
580.
581 my $ref;
582 foreach $ref (*STDOUT{IO}, *STDERR{FORMAT}) {
583 eval q/ $$ref /;
584 like($@, qr/Not a SCALAR reference/, "Scalar dereference");
585 eval q/ @$ref /;
586 like($@, qr/Not an ARRAY reference/, "Array dereference");
587 eval q/ %$ref /;
588 like($@, qr/Not a HASH reference/, "Hash dereference");
589 eval q/ &$ref /;
590 like($@, qr/Not a CODE reference/, "Code dereference");
591 }
592
593 $ref = *STDERR{FORMAT};
594 eval q/ *$ref /;
595 like($@, qr/Not a GLOB reference/, "Glob dereference");
596
597 $ref = *STDOUT{IO};
598 eval q/ *$ref /;
599 is($@, '', "Glob dereference of PVIO is acceptable");
600
601 is($ref, *{$ref}{IO}, "IO slot of the temporary glob is set correctly");
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YST
602}
603
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BM
604# these will segfault if they fail
605
606my $pvbm = PVBM;
607my $rpvbm = \$pvbm;
608
609ok (!eval { *$rpvbm }, 'PVBM ref is not a GLOB ref');
610ok (!eval { *$pvbm }, 'PVBM is not a GLOB ref');
611ok (!eval { $$pvbm }, 'PVBM is not a SCALAR ref');
612ok (!eval { @$pvbm }, 'PVBM is not an ARRAY ref');
613ok (!eval { %$pvbm }, 'PVBM is not a HASH ref');
614ok (!eval { $pvbm->() }, 'PVBM is not a CODE ref');
615ok (!eval { $rpvbm->foo }, 'PVBM is not an object');
616
fcf99ed4
B
617# bug 24254
618is( runperl(stderr => 1, prog => 'map eval qq(exit),1 for 1'), "");
619is( runperl(stderr => 1, prog => 'eval { for (1) { map { die } 2 } };'), "");
620is( runperl(stderr => 1, prog => 'for (125) { map { exit } (213)}'), "");
54c717c3
CB
621my $hushed = $^O eq 'VMS' ? 'use vmsish qw(hushed);' : '';
622is( runperl(stderr => 1, prog => $hushed . 'map die,4 for 3'), "Died at -e line 1.\n");
623is( runperl(stderr => 1, prog => $hushed . 'grep die,4 for 3'), "Died at -e line 1.\n");
624is( runperl(stderr => 1, prog => $hushed . 'for $a (3) {@b=sort {die} 4,5}'), "Died at -e line 1.\n");
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B
625
626# bug 57564
627is( runperl(stderr => 1, prog => 'my $i;for $i (1) { for $i (2) { } }'), "");
628
57ef47cc
DM
629# The mechanism for freeing objects in globs used to leave dangling
630# pointers to freed SVs. To test this, we construct this nested structure:
631# GV => blessed(AV) => RV => GV => blessed(SV)
632# all with a refcnt of 1, and hope that the second GV gets processed first
633# by do_clean_named_objs. Then when the first GV is processed, it mustn't
634# find anything nastly left by the previous GV processing.
635# The eval is stop things in the main body of the code holding a reference
636# to a GV, and the print at the end seems to bee necessary to ensure
637# the correct freeing order of *x and *y (no, I don't know why - DAPM).
638
639is (runperl(
640 prog => 'eval q[bless \@y; bless \$x; $y[0] = \*x; $z = \*y; ]; '
bf70f410 641 . 'delete $::{x}; delete $::{y}; print qq{ok\n};',
57ef47cc
DM
642 stderr => 1),
643 "ok\n", 'freeing freed glob in global destruction');
644
fcf99ed4 645
805232b4
NC
646# Bit of a hack to make test.pl happy. There are 3 more tests after it leaves.
647$test = curr_test();
648curr_test($test + 3);
4e8e7886
GS
649# test global destruction
650
840a7b70
IZ
651my $test1 = $test + 1;
652my $test2 = $test + 2;
653
8990e307
LW
654package FINALE;
655
656{
840a7b70
IZ
657 $ref3 = bless ["ok $test2\n"]; # package destruction
658 my $ref2 = bless ["ok $test1\n"]; # lexical destruction
659 local $ref1 = bless ["ok $test\n"]; # dynamic destruction
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LW
660 1; # flush any temp values on stack
661}
662
663DESTROY {
664 print $_[0][0];
665}
804ffa60 666