This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
add UNOP_AUX OP class
[perl5.git] / lib / B / Deparse.t
CommitLineData
87a42246
MS
1#!./perl
2
3BEGIN {
62a6bb71 4 unshift @INC, 't';
9cd8f857
NC
5 require Config;
6 if (($Config::Config{'extensions'} !~ /\bB\b/) ){
7 print "1..0 # Skip -- Perl configured without B module\n";
8 exit 0;
9 }
f9d3bdea 10 require 'test.pl';
87a42246
MS
11}
12
87a42246
MS
13use warnings;
14use strict;
87a42246 15
8b9fb2f9 16my $tests = 36; # not counting those in the __DATA__ section
3036b99c 17
87a42246 18use B::Deparse;
09d856fb 19my $deparse = B::Deparse->new();
507a68aa 20isa_ok($deparse, 'B::Deparse', 'instantiate a B::Deparse object');
4da9a2ca 21my %deparse;
87a42246 22
ad46c0be
RH
23$/ = "\n####\n";
24while (<DATA>) {
25 chomp;
d8cf01c3 26 $tests ++;
e9c69003
NC
27 # This code is pinched from the t/lib/common.pl for TODO.
28 # It's not clear how to avoid duplication
a6087f24 29 my %meta = (context => '');
4da9a2ca 30 foreach my $what (qw(skip todo context options)) {
c4a350e6 31 s/^#\s*\U$what\E\s*(.*)\n//m and $meta{$what} = $1;
b871937f
NC
32 # If the SKIP reason starts ? then it's taken as a code snippet to
33 # evaluate. This provides the flexibility to have conditional SKIPs
c4a350e6
NC
34 if ($meta{$what} && $meta{$what} =~ s/^\?//) {
35 my $temp = eval $meta{$what};
b871937f 36 if ($@) {
c4a350e6 37 die "# In \U$what\E code reason:\n# $meta{$what}\n$@";
b871937f 38 }
c4a350e6 39 $meta{$what} = $temp;
e9c69003 40 }
e9c69003
NC
41 }
42
4a4b8592 43 s/^\s*#\s*(.*)$//mg;
507a68aa
NC
44 my $desc = $1;
45 die "Missing name in test $_" unless defined $desc;
e9c69003 46
c4a350e6 47 if ($meta{skip}) {
f9d3bdea 48 SKIP: { skip($meta{skip}) };
e9c69003
NC
49 next;
50 }
51
ad46c0be
RH
52 my ($input, $expected);
53 if (/(.*)\n>>>>\n(.*)/s) {
54 ($input, $expected) = ($1, $2);
55 }
56 else {
57 ($input, $expected) = ($_, $_);
58 }
87a42246 59
4da9a2ca
FC
60 # parse options if necessary
61 my $deparse = $meta{options}
62 ? $deparse{$meta{options}} ||=
63 new B::Deparse split /,/, $meta{options}
64 : $deparse;
65
7ca9974d 66 my $coderef = eval "$meta{context};\n" . <<'EOC' . "sub {$input\n}";
a6087f24
NC
67# Tell B::Deparse about our ambient pragmas
68my ($hint_bits, $warning_bits, $hinthash);
69BEGIN {
70 ($hint_bits, $warning_bits, $hinthash) = ($^H, ${^WARNING_BITS}, \%^H);
71}
72$deparse->ambient_pragmas (
73 hint_bits => $hint_bits,
74 warning_bits => $warning_bits,
75 '%^H' => $hinthash,
76);
77EOC
87a42246 78
c9fa6ae9 79 local $::TODO = $meta{todo};
ad46c0be 80 if ($@) {
507a68aa 81 is($@, "", "compilation of $desc");
ad46c0be
RH
82 }
83 else {
84 my $deparsed = $deparse->coderef2text( $coderef );
31c6271a
RD
85 my $regex = $expected;
86 $regex =~ s/(\S+)/\Q$1/g;
87 $regex =~ s/\s+/\\s+/g;
88 $regex = '^\{\s*' . $regex . '\s*\}$';
b871937f 89
507a68aa 90 like($deparsed, qr/$regex/, $desc);
87a42246 91 }
87a42246
MS
92}
93
9187b6e4
FC
94# Reset the ambient pragmas
95{
96 my ($b, $w, $h);
97 BEGIN {
98 ($b, $w, $h) = ($^H, ${^WARNING_BITS}, \%^H);
99 }
100 $deparse->ambient_pragmas (
101 hint_bits => $b,
102 warning_bits => $w,
103 '%^H' => $h,
104 );
105}
106
87a42246 107use constant 'c', 'stuff';
507a68aa
NC
108is((eval "sub ".$deparse->coderef2text(\&c))->(), 'stuff',
109 'the subroutine generated by use constant deparses');
87a42246 110
09d856fb 111my $a = 0;
507a68aa
NC
112is($deparse->coderef2text(sub{(-1) ** $a }), "{\n (-1) ** \$a;\n}",
113 'anon sub capturing an external lexical');
87a42246 114
d989cdac
SM
115use constant cr => ['hello'];
116my $string = "sub " . $deparse->coderef2text(\&cr);
0707d6cc 117my $val = (eval $string)->() or diag $string;
507a68aa
NC
118is(ref($val), 'ARRAY', 'constant array references deparse');
119is($val->[0], 'hello', 'and return the correct value');
87a42246 120
87a42246 121my $path = join " ", map { qq["-I$_"] } @INC;
87a42246 122
7cde0a5f 123$a = `$^X $path "-MO=Deparse" -anlwi.bak -e 1 2>&1`;
e69a2255 124$a =~ s/-e syntax OK\n//g;
d2bc402e 125$a =~ s/.*possible typo.*\n//; # Remove warning line
82f96200 126$a =~ s/.*-i used with no filenames.*\n//; # Remove warning line
c96cf1c0 127$b = quotemeta <<'EOF';
d2bc402e
RGS
128BEGIN { $^I = ".bak"; }
129BEGIN { $^W = 1; }
130BEGIN { $/ = "\n"; $\ = "\n"; }
87a42246
MS
131LINE: while (defined($_ = <ARGV>)) {
132 chomp $_;
f86ea535 133 our(@F) = split(' ', $_, 0);
87a42246
MS
134 '???';
135}
87a42246 136EOF
c96cf1c0
FC
137$b =~ s/our\\\(\\\@F\\\)/our[( ]\@F\\)?/; # accept both our @F and our(@F)
138like($a, qr/$b/,
507a68aa 139 'command line flags deparse as BEGIN blocks setting control variables');
87a42246 140
5b4ee549
NC
141$a = `$^X $path "-MO=Deparse" -e "use constant PI => 4" 2>&1`;
142$a =~ s/-e syntax OK\n//g;
6436970c 143is($a, "use constant ('PI', 4);\n",
5b4ee549
NC
144 "Proxy Constant Subroutines must not show up as (incorrect) prototypes");
145
579a54dc 146#Re: perlbug #35857, patch #24505
b3980c39
YO
147#handle warnings::register-ed packages properly.
148package B::Deparse::Wrapper;
149use strict;
150use warnings;
151use warnings::register;
152sub getcode {
579a54dc 153 my $deparser = B::Deparse->new();
b3980c39
YO
154 return $deparser->coderef2text(shift);
155}
156
2990415a
FR
157package Moo;
158use overload '0+' => sub { 42 };
159
b3980c39
YO
160package main;
161use strict;
162use warnings;
71c4dbc3 163use constant GLIPP => 'glipp';
2990415a
FR
164use constant PI => 4;
165use constant OVERLOADED_NUMIFICATION => bless({}, 'Moo');
3779476a 166use Fcntl qw/O_TRUNC O_APPEND O_EXCL/;
aaf9c2b2 167BEGIN { delete $::Fcntl::{O_APPEND}; }
2990415a 168use POSIX qw/O_CREAT/;
b3980c39 169sub test {
579a54dc
RGS
170 my $val = shift;
171 my $res = B::Deparse::Wrapper::getcode($val);
507a68aa
NC
172 like($res, qr/use warnings/,
173 '[perl #35857] [PATCH] B::Deparse doesnt handle warnings register properly');
b3980c39
YO
174}
175my ($q,$p);
176my $x=sub { ++$q,++$p };
177test($x);
178eval <<EOFCODE and test($x);
179 package bar;
180 use strict;
181 use warnings;
182 use warnings::register;
183 package main;
184 1
185EOFCODE
186
d1dc589d
FC
187# Exotic sub declarations
188$a = `$^X $path "-MO=Deparse" -e "sub ::::{}sub ::::::{}" 2>&1`;
189$a =~ s/-e syntax OK\n//g;
190is($a, <<'EOCODG', "sub :::: and sub ::::::");
191sub :::: {
192
193}
194sub :::::: {
195
196}
197EOCODG
198
f2734596 199# [perl #117311]
200$a = `$^X $path "-MO=Deparse,-l" -e "map{ eval(0) }()" 2>&1`;
201$a =~ s/-e syntax OK\n//g;
202is($a, <<'EOCODH', "[perl #117311] [PATCH] -l option ('#line ...') does not emit ^Ls in the output");
203#line 1 "-e"
204map {
205#line 1 "-e"
206eval 0;} ();
207EOCODH
208
640d5d41
FC
209# [perl #33752]
210{
211 my $code = <<"EOCODE";
212{
213 our \$\x{1e1f}\x{14d}\x{14d};
214}
215EOCODE
216 my $deparsed
217 = $deparse->coderef2text(eval "sub { our \$\x{1e1f}\x{14d}\x{14d} }" );
218 s/$ \n//x for $deparsed, $code;
219 is $deparsed, $code, 'our $funny_Unicode_chars';
220}
221
bdabb2d5
FC
222# [perl #62500]
223$a =
224 `$^X $path "-MO=Deparse" -e "BEGIN{*CORE::GLOBAL::require=sub{1}}" 2>&1`;
225$a =~ s/-e syntax OK\n//g;
226is($a, <<'EOCODF', "CORE::GLOBAL::require override causing panick");
227sub BEGIN {
228 *CORE::GLOBAL::require = sub {
229 1;
230 }
231 ;
232}
233EOCODF
234
894e98ac
FC
235# [perl #91384]
236$a =
237 `$^X $path "-MO=Deparse" -e "BEGIN{*Acme::Acme:: = *Acme::}" 2>&1`;
238like($a, qr/-e syntax OK/,
239 "Deparse does not hang when traversing stash circularities");
240
bb8996b8 241# [perl #93990]
08412a26 242@] = ();
73f4c4fe 243is($deparse->coderef2text(sub{ print "foo@{]}" }),
bb8996b8 244q<{
73f4c4fe 245 print "foo@{]}";
08412a26 246}>, 'curly around to interpolate "@{]}"');
73f4c4fe 247is($deparse->coderef2text(sub{ print "foo@{-}" }),
bb8996b8 248q<{
73f4c4fe 249 print "foo@-";
bb8996b8
HY
250}>, 'no need to curly around to interpolate "@-"');
251
1c74777c
FC
252# Strict hints in %^H are mercilessly suppressed
253$a =
254 `$^X $path "-MO=Deparse" -e "use strict; print;" 2>&1`;
255unlike($a, qr/BEGIN/,
256 "Deparse does not emit strict hh hints");
257
3036b99c
FC
258# ambient_pragmas should not mess with strict settings.
259SKIP: {
260 skip "requires 5.11", 1 unless $] >= 5.011;
261 eval q`
3036b99c 262 BEGIN {
d1718a7c 263 # Clear out all hints
3036b99c 264 %^H = ();
d1718a7c 265 $^H = 0;
3036b99c
FC
266 new B::Deparse -> ambient_pragmas(strict => 'all');
267 }
268 use 5.011; # should enable strict
269 ok !eval '$do_noT_create_a_variable_with_this_name = 1',
270 'ambient_pragmas do not mess with compiling scope';
271 `;
272}
273
93a8ff62
FC
274# multiple statements on format lines
275$a = `$^X $path "-MO=Deparse" -e "format =" -e "\@" -e "x();z()" -e. 2>&1`;
276$a =~ s/-e syntax OK\n//g;
93a8ff62
FC
277is($a, <<'EOCODH', 'multiple statements on format lines');
278format STDOUT =
279@
280x(); z()
281.
282EOCODH
283
ddb55548
FC
284is runperl(stderr => 1, switches => [ '-MO=-qq,Deparse', $path, '-T' ],
285 prog => "format =\n\@\n\$;\n.\n"),
286 <<'EOCODM', '$; on format line';
287format STDOUT =
288@
289$;
290.
291EOCODM
292
e56a605e
FC
293is runperl(stderr => 1, switches => [ '-MO=-qq,Deparse,-l', $path ],
294 prog => "format =\n\@\n\$foo\n.\n"),
295 <<'EOCODM', 'formats with -l';
296format STDOUT =
297@
298$foo
299.
300EOCODM
301
8b9fb2f9
FC
302is runperl(stderr => 1, switches => [ '-MO=-qq,Deparse', $path ],
303 prog => "{ my \$x; format =\n\@\n\$x\n.\n}"),
304 <<'EOCODN', 'formats nested inside blocks';
305{
306 my $x;
307 format STDOUT =
308@
309$x
310.
311}
312EOCODN
313
7741ceed
FC
314# CORE::format
315$a = readpipe qq`$^X $path "-MO=Deparse" -e "use feature q|:all|;`
316 .qq` my sub format; CORE::format =" -e. 2>&1`;
317like($a, qr/CORE::format/, 'CORE::format when lex format sub is in scope');
318
fea7fb25
DM
319# literal big chars under 'use utf8'
320is($deparse->coderef2text(sub{ use utf8; /€/; }),
321'{
322 /\x{20ac}/;
323}',
324"qr/euro/");
325
e54915d6
FC
326# STDERR when deparsing sub calls
327# For a short while the output included 'While deparsing'
328$a = `$^X $path "-MO=Deparse" -e "foo()" 2>&1`;
329$a =~ s/-e syntax OK\n//g;
330is($a, <<'EOCODI', 'no extra output when deparsing foo()');
331foo();
332EOCODI
333
7741ceed
FC
334# CORE::no
335$a = readpipe qq`$^X $path "-MO=Deparse" -Xe `
336 .qq`"use feature q|:all|; my sub no; CORE::no less" 2>&1`;
d4f1bfe7 337like($a, qr/my sub no;\nCORE::no less;/,
7741ceed
FC
338 'CORE::no after my sub no');
339
340# CORE::use
341$a = readpipe qq`$^X $path "-MO=Deparse" -Xe `
342 .qq`"use feature q|:all|; my sub use; CORE::use less" 2>&1`;
d4f1bfe7 343like($a, qr/my sub use;\nCORE::use less;/,
7741ceed
FC
344 'CORE::use after my sub use');
345
346# CORE::__DATA__
347$a = readpipe qq`$^X $path "-MO=Deparse" -Xe `
348 .qq`"use feature q|:all|; my sub __DATA__; `
349 .qq`CORE::__DATA__" 2>&1`;
34b54951 350like($a, qr/my sub __DATA__;\n.*\nCORE::__DATA__/s,
7741ceed
FC
351 'CORE::__DATA__ after my sub __DATA__');
352
fe8d6c18
FC
353# sub declarations
354$a = readpipe qq`$^X $path "-MO=Deparse" -e "sub foo{}" 2>&1`;
dd3f0a7a 355like($a, qr/sub foo\s*\{\s+\}/, 'sub declarations');
67359f08
FC
356like runperl(stderr => 1, switches => [ '-MO=-qq,Deparse', $path ],
357 prog => 'sub f($); sub f($){}'),
358 qr/sub f\s*\(\$\)\s*\{\s*\}/,
359 'predeclared prototyped subs';
de001ba0
FC
360like runperl(stderr => 1, switches => [ '-MO=-qq,Deparse', $path ],
361 prog => 'use Scalar::Util q-weaken-;
362 sub f($);
363 BEGIN { weaken($_=\$::{f}) }'),
364 qr/sub f\s*\(\$\)\s*;/,
365 'prototyped stub with weak reference to the stash entry';
fe8d6c18 366
8635e3c2
FC
367# BEGIN blocks
368SKIP : {
369 skip "BEGIN output is wrong on old perls", 1 if $] < 5.021006;
370 my $prog = '
371 BEGIN { pop }
372 {
373 BEGIN { pop }
374 {
375 no overloading;
376 {
377 BEGIN { pop }
378 die
379 }
380 }
381 }';
382 $prog =~ s/\n//g;
383 $a = readpipe qq`$^X $path "-MO=Deparse" -e "$prog" 2>&1`;
384 $a =~ s/-e syntax OK\n//g;
385 is($a, <<'EOCODJ', 'BEGIN blocks');
386sub BEGIN {
387 pop @ARGV;
388}
389{
390 sub BEGIN {
391 pop @ARGV;
392 }
393 {
394 no overloading;
395 {
396 sub BEGIN {
397 pop @ARGV;
398 }
399 die;
400 }
401 }
402}
403EOCODJ
404}
34b54951
FC
405is runperl(stderr => 1, switches => [ '-MO=-qq,Deparse', $path ], prog => '
406 {
407 {
408 die;
409 BEGIN { pop }
410 }
411 BEGIN { pop }
412 }
413 BEGIN { pop }
414 '), <<'EOCODL', 'BEGIN blocks at the end of their enclosing blocks';
415{
416 {
417 die;
418 sub BEGIN {
419 pop @ARGV;
420 }
34b54951
FC
421 }
422 sub BEGIN {
423 pop @ARGV;
424 }
34b54951
FC
425}
426sub BEGIN {
427 pop @ARGV;
428}
34b54951 429EOCODL
93a8ff62 430
1f9498d0 431# [perl #115066]
1f9498d0
FC
432my $prog = 'use constant FOO => do { 1 }; no overloading; die';
433$a = readpipe qq`$^X $path "-MO=-qq,Deparse" -e "$prog" 2>&1`;
434is($a, <<'EOCODK', '[perl #115066] use statements accidentally nested');
435use constant ('FOO', do {
d88d1fe0 436 1
1f9498d0
FC
437});
438no overloading;
439die;
440EOCODK
441
d49c3562
FC
442like runperl(stderr => 1, switches => [ '-MO=-qq,Deparse', $path ],
443 prog => 'use feature lexical_subs=>; my sub f;sub main::f{}'),
444 qr/^sub main::f \{/m,
445 'sub decl when lex sub is in scope';
446
d02d1323
FC
447is runperl(stderr => 1, switches => [ '-MO=-qq,Deparse', $path, '-T' ],
448 prog => '$x =~ (1?/$a/:0)'),
449 '$x =~ ($_ =~ /$a/);'."\n",
450 '$foo =~ <branch-folded match> under taint mode';
451
d8cf01c3 452done_testing($tests);
507a68aa 453
ad46c0be 454__DATA__
b8346d05
KW
455# TODO [perl #120950] This succeeds when run a 2nd time
456# y/uni/code/
457tr/\x{345}/\x{370}/;
458####
459# y/uni/code/ [perl #120950] This 2nd instance succeeds
460tr/\x{345}/\x{370}/;
461####
507a68aa 462# A constant
ad46c0be
RH
4631;
464####
507a68aa 465# Constants in a block
f5b5c2a3 466# CONTEXT no warnings;
ad46c0be 467{
ad46c0be
RH
468 '???';
469 2;
470}
471####
507a68aa 472# Lexical and simple arithmetic
ad46c0be
RH
473my $test;
474++$test and $test /= 2;
475>>>>
476my $test;
477$test /= 2 if ++$test;
478####
507a68aa 479# list x
ad46c0be
RH
480-((1, 2) x 2);
481####
6a861075
FC
482# Assignment to list x
483((undef) x 3) = undef;
484####
507a68aa 485# lvalue sub
ad46c0be
RH
486{
487 my $test = sub : lvalue {
488 my $x;
489 }
490 ;
491}
492####
507a68aa 493# method
ad46c0be
RH
494{
495 my $test = sub : method {
496 my $x;
497 }
498 ;
499}
500####
6b6b21da
FC
501# anonsub attrs at statement start
502my $x = do { +sub : lvalue { my $y; } };
503my $z = do { foo: +sub : method { my $a; } };
504####
507a68aa 505# block with continue
87a42246 506{
ad46c0be 507 234;
f99a63a2 508}
ad46c0be
RH
509continue {
510 123;
87a42246 511}
ce4e655d 512####
507a68aa 513# lexical and package scalars
ce4e655d
RH
514my $x;
515print $main::x;
516####
507a68aa 517# lexical and package arrays
ce4e655d
RH
518my @x;
519print $main::x[1];
14a55f98 520####
507a68aa 521# lexical and package hashes
14a55f98
RH
522my %x;
523$x{warn()};
ad8caead 524####
66786896
FC
525# our (LIST)
526our($foo, $bar, $baz);
527####
56cd2ef8
FC
528# CONTEXT { package Dog } use feature "state";
529# variables with declared classes
530my Dog $spot;
531our Dog $spotty;
532state Dog $spotted;
533my Dog @spot;
534our Dog @spotty;
535state Dog @spotted;
536my Dog %spot;
537our Dog %spotty;
538state Dog %spotted;
539my Dog ($foo, @bar, %baz);
540our Dog ($phoo, @barr, %bazz);
541state Dog ($fough, @barre, %bazze);
542####
f3515641
FC
543# local our
544local our $rhubarb;
5f4d8496 545local our($rhu, $barb);
f3515641 546####
507a68aa 547# <>
ad8caead
RGS
548my $foo;
549$_ .= <ARGV> . <$foo>;
cef22867 550####
507a68aa 551# \x{}
11454c59 552my $foo = "Ab\x{100}\200\x{200}\237Cd\000Ef\x{1000}\cA\x{2000}\cZ";
2a43599b 553my $bar = "\x{100}";
4ae52e81 554####
507a68aa 555# s///e
4ae52e81 556s/x/'y';/e;
ef90d20a
FC
557s/x/$a;/e;
558s/x/complex_expression();/e;
241416b8 559####
507a68aa 560# block
241416b8
DM
561{ my $x; }
562####
507a68aa 563# while 1
241416b8
DM
564while (1) { my $k; }
565####
507a68aa 566# trailing for
241416b8
DM
567my ($x,@a);
568$x=1 for @a;
569>>>>
570my($x, @a);
0bb5f065 571$x = 1 foreach (@a);
241416b8 572####
507a68aa 573# 2 arguments in a 3 argument for
241416b8
DM
574for (my $i = 0; $i < 2;) {
575 my $z = 1;
576}
577####
507a68aa 578# 3 argument for
241416b8
DM
579for (my $i = 0; $i < 2; ++$i) {
580 my $z = 1;
581}
582####
507a68aa 583# 3 argument for again
241416b8
DM
584for (my $i = 0; $i < 2; ++$i) {
585 my $z = 1;
586}
587####
22584011
FC
588# 3-argument for with inverted condition
589for (my $i; not $i;) {
590 die;
591}
592for (my $i; not $i; ++$i) {
593 die;
594}
88a758b5
FC
595for (my $a; not +($1 || 2) ** 2;) {
596 die;
597}
22584011
FC
598Something_to_put_the_loop_in_void_context();
599####
507a68aa 600# while/continue
241416b8
DM
601my $i;
602while ($i) { my $z = 1; } continue { $i = 99; }
603####
507a68aa 604# foreach with my
09d856fb 605foreach my $i (1, 2) {
241416b8
DM
606 my $z = 1;
607}
608####
4da9a2ca
FC
609# OPTIONS -p
610# foreach with my under -p
611foreach my $i (1) {
612 die;
613}
614####
507a68aa 615# foreach
241416b8
DM
616my $i;
617foreach $i (1, 2) {
618 my $z = 1;
619}
620####
507a68aa 621# foreach, 2 mys
241416b8
DM
622my $i;
623foreach my $i (1, 2) {
624 my $z = 1;
625}
626####
507a68aa 627# foreach with our
241416b8
DM
628foreach our $i (1, 2) {
629 my $z = 1;
630}
631####
507a68aa 632# foreach with my and our
241416b8
DM
633my $i;
634foreach our $i (1, 2) {
635 my $z = 1;
636}
3ac6e0f9 637####
bcff4148
FC
638# foreach with state
639# CONTEXT use feature "state";
640foreach state $i (1, 2) {
641 state $z = 1;
642}
643####
507a68aa 644# reverse sort
3ac6e0f9
RGS
645my @x;
646print reverse sort(@x);
647####
507a68aa 648# sort with cmp
3ac6e0f9
RGS
649my @x;
650print((sort {$b cmp $a} @x));
651####
507a68aa 652# reverse sort with block
3ac6e0f9
RGS
653my @x;
654print((reverse sort {$b <=> $a} @x));
36d57d93 655####
507a68aa 656# foreach reverse
36d57d93
RGS
657our @a;
658print $_ foreach (reverse @a);
aae53c41 659####
507a68aa 660# foreach reverse (not inplace)
aae53c41
RGS
661our @a;
662print $_ foreach (reverse 1, 2..5);
f86ea535 663####
507a68aa 664# bug #38684
f86ea535
SM
665our @ary;
666@ary = split(' ', 'foo', 0);
31c6271a 667####
de183bbb
FC
668# Split to our array
669our @array = split(//, 'foo', 0);
670####
ef7999f1
FC
671# Split to my array
672my @array = split(//, 'foo', 0);
673####
507a68aa 674# bug #40055
31c6271a
RD
675do { () };
676####
507a68aa 677# bug #40055
31c6271a 678do { my $x = 1; $x };
d9002312 679####
507a68aa 680# <20061012113037.GJ25805@c4.convolution.nl>
d9002312
SM
681my $f = sub {
682 +{[]};
683} ;
8b2d6640 684####
507a68aa 685# bug #43010
8b2d6640
FC
686'!@$%'->();
687####
507a68aa 688# bug #43010
8b2d6640
FC
689::();
690####
507a68aa 691# bug #43010
8b2d6640
FC
692'::::'->();
693####
507a68aa 694# bug #43010
8b2d6640 695&::::;
09d856fb 696####
1b38d782
FC
697# [perl #77172]
698package rt77172;
699sub foo {} foo & & & foo;
700>>>>
701package rt77172;
702foo(&{&} & foo());
703####
507a68aa 704# variables as method names
09d856fb
CK
705my $bar;
706'Foo'->$bar('orz');
35a99a08 707'Foo'->$bar('orz') = 'a stranger stranger than before';
09d856fb 708####
507a68aa 709# constants as method names
09d856fb
CK
710'Foo'->bar('orz');
711####
507a68aa 712# constants as method names without ()
09d856fb 713'Foo'->bar;
0ced6c29 714####
28bfcb02 715# [perl #47359] "indirect" method call notation
1bf8bbb0
FC
716our @bar;
717foo{@bar}+1,->foo;
718(foo{@bar}+1),foo();
719foo{@bar}1 xor foo();
720>>>>
721our @bar;
722(foo { @bar } 1)->foo;
723(foo { @bar } 1), foo();
724foo { @bar } 1 xor foo();
725####
e9c69003 726# SKIP ?$] < 5.010 && "say not implemented on this Perl version"
205fef88 727# CONTEXT use feature ':5.10';
507a68aa 728# say
7ddd1a01
NC
729say 'foo';
730####
8f57bb34 731# SKIP ?$] < 5.010 && "say not implemented on this Perl version"
8f57bb34
NC
732# CONTEXT use 5.10.0;
733# say in the context of use 5.10.0
734say 'foo';
735####
736# SKIP ?$] < 5.010 && "say not implemented on this Perl version"
8f57bb34
NC
737# say with use 5.10.0
738use 5.10.0;
739say 'foo';
740>>>>
741no feature;
742use feature ':5.10';
743say 'foo';
744####
745# SKIP ?$] < 5.010 && "say not implemented on this Perl version"
746# say with use feature ':5.10';
747use feature ':5.10';
748say 'foo';
749>>>>
750use feature 'say', 'state', 'switch';
751say 'foo';
752####
753# SKIP ?$] < 5.010 && "say not implemented on this Perl version"
8f57bb34
NC
754# CONTEXT use feature ':5.10';
755# say with use 5.10.0 in the context of use feature
756use 5.10.0;
757say 'foo';
758>>>>
759no feature;
760use feature ':5.10';
761say 'foo';
762####
763# SKIP ?$] < 5.010 && "say not implemented on this Perl version"
764# CONTEXT use 5.10.0;
765# say with use feature ':5.10' in the context of use 5.10.0
766use feature ':5.10';
767say 'foo';
768>>>>
769say 'foo';
770####
771# SKIP ?$] < 5.015 && "__SUB__ not implemented on this Perl version"
772# CONTEXT use feature ':5.15';
773# __SUB__
774__SUB__;
775####
776# SKIP ?$] < 5.015 && "__SUB__ not implemented on this Perl version"
8f57bb34
NC
777# CONTEXT use 5.15.0;
778# __SUB__ in the context of use 5.15.0
779__SUB__;
780####
781# SKIP ?$] < 5.015 && "__SUB__ not implemented on this Perl version"
8f57bb34
NC
782# __SUB__ with use 5.15.0
783use 5.15.0;
784__SUB__;
785>>>>
786no feature;
787use feature ':5.16';
788__SUB__;
789####
790# SKIP ?$] < 5.015 && "__SUB__ not implemented on this Perl version"
791# __SUB__ with use feature ':5.15';
792use feature ':5.15';
793__SUB__;
794>>>>
795use feature 'current_sub', 'evalbytes', 'fc', 'say', 'state', 'switch', 'unicode_strings', 'unicode_eval';
796__SUB__;
797####
798# SKIP ?$] < 5.015 && "__SUB__ not implemented on this Perl version"
8f57bb34
NC
799# CONTEXT use feature ':5.15';
800# __SUB__ with use 5.15.0 in the context of use feature
801use 5.15.0;
802__SUB__;
803>>>>
804no feature;
805use feature ':5.16';
806__SUB__;
807####
808# SKIP ?$] < 5.015 && "__SUB__ not implemented on this Perl version"
809# CONTEXT use 5.15.0;
810# __SUB__ with use feature ':5.15' in the context of use 5.15.0
811use feature ':5.15';
812__SUB__;
813>>>>
814__SUB__;
815####
e9c69003 816# SKIP ?$] < 5.010 && "state vars not implemented on this Perl version"
205fef88 817# CONTEXT use feature ':5.10';
507a68aa 818# state vars
0ced6c29
RGS
819state $x = 42;
820####
e9c69003 821# SKIP ?$] < 5.010 && "state vars not implemented on this Perl version"
205fef88 822# CONTEXT use feature ':5.10';
507a68aa 823# state var assignment
7ddd1a01
NC
824{
825 my $y = (state $x = 42);
826}
827####
e9c69003 828# SKIP ?$] < 5.010 && "state vars not implemented on this Perl version"
205fef88 829# CONTEXT use feature ':5.10';
c4a6f826 830# state vars in anonymous subroutines
7ddd1a01
NC
831$a = sub {
832 state $x;
833 return $x++;
834}
835;
644741fd
NC
836####
837# SKIP ?$] < 5.011 && 'each @array not implemented on this Perl version'
507a68aa 838# each @array;
644741fd
NC
839each @ARGV;
840each @$a;
841####
842# SKIP ?$] < 5.011 && 'each @array not implemented on this Perl version'
507a68aa 843# keys @array; values @array
644741fd
NC
844keys @$a if keys @ARGV;
845values @ARGV if values @$a;
35925e80 846####
507a68aa 847# Anonymous arrays and hashes, and references to them
35925e80
RGS
848my $a = {};
849my $b = \{};
850my $c = [];
851my $d = \[];
9210de83
FR
852####
853# SKIP ?$] < 5.010 && "smartmatch and given/when not implemented on this Perl version"
0f539b13 854# CONTEXT use feature ':5.10'; no warnings 'experimental::smartmatch';
507a68aa 855# implicit smartmatch in given/when
9210de83
FR
856given ('foo') {
857 when ('bar') { continue; }
858 when ($_ ~~ 'quux') { continue; }
859 default { 0; }
860}
7ecdd211 861####
507a68aa 862# conditions in elsifs (regression in change #33710 which fixed bug #37302)
7ecdd211
PJ
863if ($a) { x(); }
864elsif ($b) { x(); }
865elsif ($a and $b) { x(); }
866elsif ($a or $b) { x(); }
867else { x(); }
03b22f1b 868####
507a68aa 869# interpolation in regexps
03b22f1b
RGS
870my($y, $t);
871/x${y}z$t/;
227375e1 872####
4a4b8592 873# TODO new undocumented cpan-bug #33708
507a68aa 874# cpan-bug #33708
227375e1
RU
875%{$_ || {}}
876####
4a4b8592 877# TODO hash constants not yet fixed
507a68aa 878# cpan-bug #33708
227375e1
RU
879use constant H => { "#" => 1 }; H->{"#"}
880####
4a4b8592 881# TODO optimized away 0 not yet fixed
507a68aa 882# cpan-bug #33708
227375e1 883foreach my $i (@_) { 0 }
edbe35ea 884####
507a68aa 885# tests with not, not optimized
07f3cdf5 886my $c;
edbe35ea
VP
887x() unless $a;
888x() if not $a and $b;
889x() if $a and not $b;
890x() unless not $a and $b;
891x() unless $a and not $b;
892x() if not $a or $b;
893x() if $a or not $b;
894x() unless not $a or $b;
895x() unless $a or not $b;
07f3cdf5
VP
896x() if $a and not $b and $c;
897x() if not $a and $b and not $c;
898x() unless $a and not $b and $c;
899x() unless not $a and $b and not $c;
900x() if $a or not $b or $c;
901x() if not $a or $b or not $c;
902x() unless $a or not $b or $c;
903x() unless not $a or $b or not $c;
edbe35ea 904####
507a68aa 905# tests with not, optimized
07f3cdf5 906my $c;
edbe35ea
VP
907x() if not $a;
908x() unless not $a;
909x() if not $a and not $b;
910x() unless not $a and not $b;
911x() if not $a or not $b;
912x() unless not $a or not $b;
07f3cdf5
VP
913x() if not $a and not $b and $c;
914x() unless not $a and not $b and $c;
915x() if not $a or not $b or $c;
916x() unless not $a or not $b or $c;
917x() if not $a and not $b and not $c;
918x() unless not $a and not $b and not $c;
919x() if not $a or not $b or not $c;
920x() unless not $a or not $b or not $c;
921x() unless not $a or not $b or not $c;
edbe35ea 922>>>>
07f3cdf5 923my $c;
edbe35ea
VP
924x() unless $a;
925x() if $a;
926x() unless $a or $b;
927x() if $a or $b;
928x() unless $a and $b;
07f3cdf5
VP
929x() if $a and $b;
930x() if not $a || $b and $c;
931x() unless not $a || $b and $c;
932x() if not $a && $b or $c;
933x() unless not $a && $b or $c;
934x() unless $a or $b or $c;
935x() if $a or $b or $c;
936x() unless $a and $b and $c;
937x() if $a and $b and $c;
938x() unless not $a && $b && $c;
71c4dbc3 939####
507a68aa 940# tests that should be constant folded
71c4dbc3
VP
941x() if 1;
942x() if GLIPP;
943x() if !GLIPP;
944x() if GLIPP && GLIPP;
945x() if !GLIPP || GLIPP;
946x() if do { GLIPP };
947x() if do { no warnings 'void'; 5; GLIPP };
948x() if do { !GLIPP };
949if (GLIPP) { x() } else { z() }
950if (!GLIPP) { x() } else { z() }
951if (GLIPP) { x() } elsif (GLIPP) { z() }
952if (!GLIPP) { x() } elsif (GLIPP) { z() }
953if (GLIPP) { x() } elsif (!GLIPP) { z() }
954if (!GLIPP) { x() } elsif (!GLIPP) { z() }
955if (!GLIPP) { x() } elsif (!GLIPP) { z() } elsif (GLIPP) { t() }
956if (!GLIPP) { x() } elsif (!GLIPP) { z() } elsif (!GLIPP) { t() }
957if (!GLIPP) { x() } elsif (!GLIPP) { z() } elsif (!GLIPP) { t() }
958>>>>
959x();
960x();
961'???';
962x();
963x();
964x();
965x();
966do {
967 '???'
968};
969do {
970 x()
971};
972do {
973 z()
974};
975do {
976 x()
977};
978do {
979 z()
980};
981do {
982 x()
983};
984'???';
985do {
986 t()
987};
988'???';
989!1;
990####
719c50dc
RGS
991# TODO constant deparsing has been backed out for 5.12
992# XXXTODO ? $Config::Config{useithreads} && "doesn't work with threads"
507a68aa 993# tests that shouldn't be constant folded
ac0f1413
NC
994# It might be fundamentally impossible to make this work on ithreads, in which
995# case the TODO should become a SKIP
71c4dbc3
VP
996x() if $a;
997if ($a == 1) { x() } elsif ($b == 2) { z() }
998if (do { foo(); GLIPP }) { x() }
999if (do { $a++; GLIPP }) { x() }
1000>>>>
1001x() if $a;
1002if ($a == 1) { x(); } elsif ($b == 2) { z(); }
2990415a
FR
1003if (do { foo(); GLIPP }) { x(); }
1004if (do { ++$a; GLIPP }) { x(); }
1005####
0fa4a265 1006# TODO constant deparsing has been backed out for 5.12
507a68aa 1007# tests for deparsing constants
2990415a
FR
1008warn PI;
1009####
0fa4a265 1010# TODO constant deparsing has been backed out for 5.12
507a68aa 1011# tests for deparsing imported constants
3779476a 1012warn O_TRUNC;
2990415a 1013####
0fa4a265 1014# TODO constant deparsing has been backed out for 5.12
507a68aa 1015# tests for deparsing re-exported constants
2990415a
FR
1016warn O_CREAT;
1017####
0fa4a265 1018# TODO constant deparsing has been backed out for 5.12
507a68aa 1019# tests for deparsing imported constants that got deleted from the original namespace
aaf9c2b2 1020warn O_APPEND;
2990415a 1021####
0fa4a265
DM
1022# TODO constant deparsing has been backed out for 5.12
1023# XXXTODO ? $Config::Config{useithreads} && "doesn't work with threads"
507a68aa 1024# tests for deparsing constants which got turned into full typeglobs
ac0f1413
NC
1025# It might be fundamentally impossible to make this work on ithreads, in which
1026# case the TODO should become a SKIP
2990415a
FR
1027warn O_EXCL;
1028eval '@Fcntl::O_EXCL = qw/affe tiger/;';
1029warn O_EXCL;
1030####
0fa4a265 1031# TODO constant deparsing has been backed out for 5.12
507a68aa 1032# tests for deparsing of blessed constant with overloaded numification
2990415a 1033warn OVERLOADED_NUMIFICATION;
79289e05 1034####
507a68aa 1035# strict
79289e05 1036no strict;
415d4c68
FC
1037print $x;
1038use strict 'vars';
1039print $main::x;
1040use strict 'subs';
1041print $main::x;
1042use strict 'refs';
1043print $main::x;
1044no strict 'vars';
79289e05
NC
1045$x;
1046####
1047# TODO Subsets of warnings could be encoded textually, rather than as bitflips.
507a68aa 1048# subsets of warnings
79289e05
NC
1049no warnings 'deprecated';
1050my $x;
1051####
1052# TODO Better test for CPAN #33708 - the deparsed code has different behaviour
507a68aa 1053# CPAN #33708
79289e05
NC
1054use strict;
1055no warnings;
1056
1057foreach (0..3) {
1058 my $x = 2;
1059 {
1060 my $x if 0;
1061 print ++$x, "\n";
1062 }
1063}
d83f38d8 1064####
507a68aa 1065# no attribute list
d83f38d8
NC
1066my $pi = 4;
1067####
2dc78664
NC
1068# SKIP ?$] > 5.013006 && ":= is now a syntax error"
1069# := treated as an empty attribute list
d83f38d8
NC
1070no warnings;
1071my $pi := 4;
1072>>>>
1073no warnings;
1074my $pi = 4;
1075####
507a68aa 1076# : = empty attribute list
d83f38d8
NC
1077my $pi : = 4;
1078>>>>
1079my $pi = 4;
689e417f 1080####
507a68aa 1081# in place sort
689e417f
VP
1082our @a;
1083my @b;
1084@a = sort @a;
1085@b = sort @b;
1086();
1087####
507a68aa 1088# in place reverse
689e417f
VP
1089our @a;
1090my @b;
1091@a = reverse @a;
1092@b = reverse @b;
1093();
06fc6867 1094####
507a68aa 1095# #71870 Use of uninitialized value in bitwise and B::Deparse
06fc6867
VP
1096my($r, $s, @a);
1097@a = split(/foo/, $s, 0);
1098$r = qr/foo/;
1099@a = split(/$r/, $s, 0);
1100();
98a1a137 1101####
507a68aa 1102# package declaration before label
98a1a137
Z
1103{
1104 package Foo;
1105 label: print 123;
1106}
538f5756 1107####
507a68aa 1108# shift optimisation
538f5756
RZ
1109shift;
1110>>>>
1111shift();
1112####
507a68aa 1113# shift optimisation
538f5756
RZ
1114shift @_;
1115####
507a68aa 1116# shift optimisation
538f5756
RZ
1117pop;
1118>>>>
1119pop();
1120####
507a68aa 1121# shift optimisation
538f5756 1122pop @_;
a539498a 1123####
507a68aa 1124#[perl #20444]
a539498a
FC
1125"foo" =~ (1 ? /foo/ : /bar/);
1126"foo" =~ (1 ? y/foo// : /bar/);
5e5a1632 1127"foo" =~ (1 ? y/foo//r : /bar/);
a539498a
FC
1128"foo" =~ (1 ? s/foo// : /bar/);
1129>>>>
1130'foo' =~ ($_ =~ /foo/);
1131'foo' =~ ($_ =~ tr/fo//);
5e5a1632 1132'foo' =~ ($_ =~ tr/fo//r);
a539498a 1133'foo' =~ ($_ =~ s/foo//);
e0ab66ad 1134####
5e5a1632
FC
1135# The fix for [perl #20444] broke this.
1136'foo' =~ do { () };
1137####
4b58603b
FC
1138# [perl #81424] match against aelemfast_lex
1139my @s;
1140print /$s[1]/;
1141####
36727b53
FC
1142# /$#a/
1143print /$#main::a/;
1144####
9e32885a
FC
1145# $lexical =~ //
1146my $x;
1147$x =~ //;
1148####
b9bc576f 1149# [perl #91318] /regexp/applaud
09622ee2
FC
1150print /a/a, s/b/c/a;
1151print /a/aa, s/b/c/aa;
1152print /a/p, s/b/c/p;
1153print /a/l, s/b/c/l;
1154print /a/u, s/b/c/u;
b9bc576f
FC
1155{
1156 use feature "unicode_strings";
09622ee2 1157 print /a/d, s/b/c/d;
b9bc576f
FC
1158}
1159{
1160 use re "/u";
09622ee2 1161 print /a/d, s/b/c/d;
b9bc576f 1162}
dff5ffe4
FC
1163{
1164 use 5.012;
1165 print /a/d, s/b/c/d;
1166}
b9bc576f 1167>>>>
09622ee2
FC
1168print /a/a, s/b/c/a;
1169print /a/aa, s/b/c/aa;
1170print /a/p, s/b/c/p;
1171print /a/l, s/b/c/l;
1172print /a/u, s/b/c/u;
b9bc576f 1173{
a8095af7 1174 use feature 'unicode_strings';
09622ee2 1175 print /a/d, s/b/c/d;
b9bc576f
FC
1176}
1177{
0bb01b05
FC
1178 BEGIN { $^H{'reflags'} = '0';
1179 $^H{'reflags_charset'} = '2'; }
09622ee2 1180 print /a/d, s/b/c/d;
b9bc576f 1181}
dff5ffe4
FC
1182{
1183 no feature;
1184 use feature ':5.12';
1185 print /a/d, s/b/c/d;
1186}
b9bc576f 1187####
9f125c4a
FC
1188# [perl #119807] s//\(3)/ge should not warn when deparsed (\3 warns)
1189s/foo/\(3);/eg;
1190####
c9fa6ae9 1191# [perl #115256]
c9fa6ae9
FC
1192"" =~ /a(?{ print q|
1193|})/;
1194>>>>
f6b6ee63 1195'' =~ /a(?{ print "\n"; })/;
c9fa6ae9
FC
1196####
1197# [perl #123217]
c9fa6ae9
FC
1198$_ = qr/(??{<<END})/
1199f.o
1200b.r
1201END
1202>>>>
1203$_ = qr/(??{ "f.o\nb.r\n"; })/;
1204####
1205# More regexp code block madness
c9fa6ae9
FC
1206my($b, @a);
1207/(?{ die $b; })/;
1208/a(?{ die $b; })a/;
1209/$a(?{ die $b; })/;
1210/@a(?{ die $b; })/;
1211/(??{ die $b; })/;
1212/a(??{ die $b; })a/;
1213/$a(??{ die $b; })/;
1214/@a(??{ die $b; })/;
1215qr/(?{ die $b; })/;
1216qr/a(?{ die $b; })a/;
1217qr/$a(?{ die $b; })/;
1218qr/@a(?{ die $b; })/;
1219qr/(??{ die $b; })/;
1220qr/a(??{ die $b; })a/;
1221qr/$a(??{ die $b; })/;
1222qr/@a(??{ die $b; })/;
1223s/(?{ die $b; })//;
1224s/a(?{ die $b; })a//;
1225s/$a(?{ die $b; })//;
1226s/@a(?{ die $b; })//;
1227s/(??{ die $b; })//;
1228s/a(??{ die $b; })a//;
1229s/$a(??{ die $b; })//;
1230s/@a(??{ die $b; })//;
1231####
e7afc405 1232# y///r
d52196e1 1233tr/a/b/r + $a =~ tr/p/q/r;
cb8157e3 1234####
12cea2fa
FC
1235# y///d in list [perl #119815]
1236() = tr/a//d;
1237####
cb8578ff 1238# [perl #90898]
f4002a4b 1239<a,>;
09dcfa7d
FC
1240####
1241# [perl #91008]
d401967c 1242# CONTEXT no warnings 'experimental::autoderef';
09dcfa7d
FC
1243each $@;
1244keys $~;
1245values $!;
5d8c42c2
FC
1246####
1247# readpipe with complex expression
1248readpipe $a + $b;
93bad3fd
NC
1249####
1250# aelemfast
1251$b::a[0] = 1;
1252####
1253# aelemfast for a lexical
1254my @a;
1255$a[0] = 1;
80e3f4ad
FC
1256####
1257# feature features without feature
0f539b13 1258# CONTEXT no warnings 'experimental::smartmatch';
80e3f4ad 1259CORE::state $x;
223b1722
FC
1260CORE::say $x;
1261CORE::given ($x) {
1262 CORE::when (3) {
1263 continue;
1264 }
1265 CORE::default {
1266 CORE::break;
1267 }
1268}
1269CORE::evalbytes '';
1270() = CORE::__SUB__;
838f2281 1271() = CORE::fc $x;
223b1722
FC
1272####
1273# feature features when feature has been disabled by use VERSION
0f539b13 1274# CONTEXT no warnings 'experimental::smartmatch';
223b1722
FC
1275use feature (sprintf(":%vd", $^V));
1276use 1;
412989c2 1277CORE::say $_;
223b1722 1278CORE::state $x;
223b1722
FC
1279CORE::given ($x) {
1280 CORE::when (3) {
1281 continue;
1282 }
1283 CORE::default {
1284 CORE::break;
1285 }
1286}
1287CORE::evalbytes '';
1288() = CORE::__SUB__;
1289>>>>
412989c2 1290CORE::say $_;
205fef88 1291CORE::state $x;
205fef88
NC
1292CORE::given ($x) {
1293 CORE::when (3) {
1294 continue;
1295 }
1296 CORE::default {
1297 CORE::break;
1298 }
1299}
1300CORE::evalbytes '';
1301() = CORE::__SUB__;
1302####
1303# (the above test with CONTEXT, and the output is equivalent but different)
0f539b13 1304# CONTEXT use feature ':5.10'; no warnings 'experimental::smartmatch';
205fef88
NC
1305# feature features when feature has been disabled by use VERSION
1306use feature (sprintf(":%vd", $^V));
1307use 1;
412989c2 1308CORE::say $_;
205fef88 1309CORE::state $x;
205fef88
NC
1310CORE::given ($x) {
1311 CORE::when (3) {
1312 continue;
1313 }
1314 CORE::default {
1315 CORE::break;
1316 }
1317}
1318CORE::evalbytes '';
1319() = CORE::__SUB__;
1320>>>>
0bb01b05
FC
1321no feature;
1322use feature ':default';
412989c2 1323CORE::say $_;
223b1722 1324CORE::state $x;
80e3f4ad
FC
1325CORE::given ($x) {
1326 CORE::when (3) {
1327 continue;
1328 }
1329 CORE::default {
e36901c8 1330 CORE::break;
80e3f4ad
FC
1331 }
1332}
7d789282 1333CORE::evalbytes '';
84ed0108 1334() = CORE::__SUB__;
6ec73527 1335####
7741ceed
FC
1336# SKIP ?$] < 5.017004 && "lexical subs not implemented on this Perl version"
1337# lexical subroutines and keywords of the same name
1338# CONTEXT use feature 'lexical_subs', 'switch'; no warnings 'experimental';
1339my sub default;
1340my sub else;
1341my sub elsif;
1342my sub for;
1343my sub foreach;
1344my sub given;
1345my sub if;
1346my sub m;
1347my sub no;
1348my sub package;
1349my sub q;
1350my sub qq;
1351my sub qr;
1352my sub qx;
1353my sub require;
1354my sub s;
1355my sub sub;
1356my sub tr;
1357my sub unless;
1358my sub until;
1359my sub use;
1360my sub when;
1361my sub while;
1362CORE::default { die; }
1363CORE::if ($1) { die; }
1364CORE::if ($1) { die; }
1365CORE::elsif ($1) { die; }
1366CORE::else { die; }
1367CORE::for (die; $1; die) { die; }
1368CORE::foreach $_ (1 .. 10) { die; }
1369die CORE::foreach (1);
1370CORE::given ($1) { die; }
1371CORE::m[/];
1372CORE::m?/?;
1373CORE::package foo;
1374CORE::no strict;
1375() = (CORE::q['], CORE::qq["$_], CORE::qr//, CORE::qx[`]);
1376CORE::require 1;
1377CORE::s///;
1378() = CORE::sub { die; } ;
1379CORE::tr///;
1380CORE::unless ($1) { die; }
1381CORE::until ($1) { die; }
1382die CORE::until $1;
1383CORE::use strict;
1384CORE::when ($1 ~~ $2) { die; }
1385CORE::while ($1) { die; }
1386die CORE::while $1;
1387####
0bb01b05
FC
1388# Feature hints
1389use feature 'current_sub', 'evalbytes';
1390print;
1391use 1;
1392print;
1393use 5.014;
1394print;
1395no feature 'unicode_strings';
1396print;
1397>>>>
a8095af7 1398use feature 'current_sub', 'evalbytes';
0bb01b05
FC
1399print $_;
1400no feature;
1401use feature ':default';
1402print $_;
1403no feature;
1404use feature ':5.12';
1405print $_;
a8095af7 1406no feature 'unicode_strings';
0bb01b05
FC
1407print $_;
1408####
6ec73527
FC
1409# $#- $#+ $#{%} etc.
1410my @x;
5b6da579 1411@x = ($#{`}, $#{~}, $#{!}, $#{@}, $#{$}, $#{%}, $#{^}, $#{&}, $#{*});
6ec73527
FC
1412@x = ($#{(}, $#{)}, $#{[}, $#{{}, $#{]}, $#{}}, $#{'}, $#{"}, $#{,});
1413@x = ($#{<}, $#{.}, $#{>}, $#{/}, $#{?}, $#{=}, $#+, $#{\}, $#{|}, $#-);
1414@x = ($#{;}, $#{:});
61154ac0 1415####
ff683671
NC
1416# ${#} interpolated
1417# It's a known TODO that warnings are deparsed as bits, not textually.
1418no warnings;
61154ac0 1419() = "${#}a";
958ed56b 1420####
337d7381
FC
1421# [perl #86060] $( $| $) in regexps need braces
1422/${(}/;
1423/${|}/;
1424/${)}/;
1425/${(}${|}${)}/;
1426####
958ed56b
FC
1427# ()[...]
1428my(@a) = ()[()];
521795fe
FC
1429####
1430# sort(foo(bar))
1431# sort(foo(bar)) is interpreted as sort &foo(bar)
1432# sort foo(bar) is interpreted as sort foo bar
1433# parentheses are not optional in this case
1434print sort(foo('bar'));
1435>>>>
1436print sort(foo('bar'));
24fcb59f
FC
1437####
1438# substr assignment
1439substr(my $a, 0, 0) = (foo(), bar());
1440$a++;
04be0204 1441####
d1718a7c
FC
1442# This following line works around an unfixed bug that we are not trying to
1443# test for here:
1444# CONTEXT BEGIN { $^H{a} = "b"; delete $^H{a} } # make %^H localised
04be0204
FC
1445# hint hash
1446BEGIN { $^H{'foo'} = undef; }
1447{
1448 BEGIN { $^H{'bar'} = undef; }
1449 {
1450 BEGIN { $^H{'baz'} = undef; }
1451 {
1452 print $_;
1453 }
1454 print $_;
1455 }
1456 print $_;
1457}
035146a3
FC
1458BEGIN { $^H{q[']} = '('; }
1459print $_;
c306e834 1460####
d1718a7c
FC
1461# This following line works around an unfixed bug that we are not trying to
1462# test for here:
1463# CONTEXT BEGIN { $^H{a} = "b"; delete $^H{a} } # make %^H localised
c306e834
FC
1464# hint hash changes that serialise the same way with sort %hh
1465BEGIN { $^H{'a'} = 'b'; }
1466{
1467 BEGIN { $^H{'b'} = 'a'; delete $^H{'a'}; }
1468 print $_;
1469}
1470print $_;
94bb57f9
FC
1471####
1472# [perl #47361] do({}) and do +{} (variants of do-file)
1473do({});
1474do +{};
8b46c09b
FC
1475sub foo::do {}
1476package foo;
1477CORE::do({});
1478CORE::do +{};
94bb57f9
FC
1479>>>>
1480do({});
1481do({});
8b46c09b
FC
1482package foo;
1483CORE::do({});
1484CORE::do({});
9c56d9ea
FC
1485####
1486# [perl #77096] functions that do not follow the llafr
1487() = (return 1) + time;
1488() = (return ($1 + $2) * $3) + time;
1489() = (return ($a xor $b)) + time;
1490() = (do 'file') + time;
1491() = (do ($1 + $2) * $3) + time;
1492() = (do ($1 xor $2)) + time;
41df74e3
FC
1493() = (goto 1) + 3;
1494() = (require 'foo') + 3;
1495() = (require foo) + 3;
266da325 1496() = (CORE::dump 1) + 3;
41df74e3
FC
1497() = (last 1) + 3;
1498() = (next 1) + 3;
1499() = (redo 1) + 3;
5830412d
FC
1500() = (-R $_) + 3;
1501() = (-W $_) + 3;
1502() = (-X $_) + 3;
1503() = (-r $_) + 3;
1504() = (-w $_) + 3;
1505() = (-x $_) + 3;
2462c3cc 1506####
1cabb3b3
FC
1507# [perl #97476] not() *does* follow the llafr
1508$_ = ($a xor not +($1 || 2) ** 2);
1509####
4d8ac5c7
FC
1510# Precedence conundrums with argument-less function calls
1511() = (eof) + 1;
1512() = (return) + 1;
1513() = (return, 1);
7bc8c979
FC
1514() = warn;
1515() = warn() + 1;
4d8ac5c7
FC
1516() = setpgrp() + 1;
1517####
1eb0b7be
FC
1518# loopexes have assignment prec
1519() = (CORE::dump a) | 'b';
1520() = (goto a) | 'b';
1521() = (last a) | 'b';
1522() = (next a) | 'b';
1523() = (redo a) | 'b';
1524####
2462c3cc
FC
1525# [perl #63558] open local(*FH)
1526open local *FH;
564cd6cb 1527pipe local *FH, local *FH;
843b15cc 1528####
b89b7257
FC
1529# [perl #91416] open "string"
1530open 'open';
1531open '####';
1532open '^A';
1533open "\ca";
1534>>>>
1535open *open;
1536open '####';
1537open '^A';
1538open *^A;
1539####
be6cf5cf
FC
1540# "string"->[] ->{}
1541no strict 'vars';
1542() = 'open'->[0]; #aelemfast
1543() = '####'->[0];
1544() = '^A'->[0];
1545() = "\ca"->[0];
b861b87f 1546() = 'a::]b'->[0];
10e8e32b
FC
1547() = 'open'->[$_]; #aelem
1548() = '####'->[$_];
1549() = '^A'->[$_];
1550() = "\ca"->[$_];
b861b87f 1551() = 'a::]b'->[$_];
10e8e32b
FC
1552() = 'open'->{0}; #helem
1553() = '####'->{0};
1554() = '^A'->{0};
1555() = "\ca"->{0};
b861b87f 1556() = 'a::]b'->{0};
be6cf5cf 1557>>>>
415d4c68 1558no strict 'vars';
be6cf5cf
FC
1559() = $open[0];
1560() = '####'->[0];
1561() = '^A'->[0];
1562() = $^A[0];
b861b87f 1563() = 'a::]b'->[0];
10e8e32b
FC
1564() = $open[$_];
1565() = '####'->[$_];
1566() = '^A'->[$_];
1567() = $^A[$_];
b861b87f 1568() = 'a::]b'->[$_];
10e8e32b
FC
1569() = $open{'0'};
1570() = '####'->{'0'};
1571() = '^A'->{'0'};
1572() = $^A{'0'};
b861b87f 1573() = 'a::]b'->{'0'};
be6cf5cf 1574####
843b15cc
FC
1575# [perl #74740] -(f()) vs -f()
1576$_ = -(f());
c75b4828
FC
1577####
1578# require <binop>
1579require 'a' . $1;
afb60448
HY
1580####
1581#[perl #30504] foreach-my postfix/prefix difference
1582$_ = 'foo' foreach my ($foo1, $bar1, $baz1);
1583foreach (my ($foo2, $bar2, $baz2)) { $_ = 'foo' }
1584foreach my $i (my ($foo3, $bar3, $baz3)) { $i = 'foo' }
1585>>>>
1586$_ = 'foo' foreach (my($foo1, $bar1, $baz1));
1587foreach $_ (my($foo2, $bar2, $baz2)) {
1588 $_ = 'foo';
1589}
1590foreach my $i (my($foo3, $bar3, $baz3)) {
1591 $i = 'foo';
1592}
1593####
1594#[perl #108224] foreach with continue block
1595foreach (1 .. 3) { print } continue { print "\n" }
1596foreach (1 .. 3) { } continue { }
1597foreach my $i (1 .. 3) { print $i } continue { print "\n" }
1598foreach my $i (1 .. 3) { } continue { }
1599>>>>
1600foreach $_ (1 .. 3) {
1601 print $_;
1602}
1603continue {
1604 print "\n";
1605}
1606foreach $_ (1 .. 3) {
1607 ();
1608}
1609continue {
1610 ();
1611}
1612foreach my $i (1 .. 3) {
1613 print $i;
1614}
1615continue {
1616 print "\n";
1617}
1618foreach my $i (1 .. 3) {
1619 ();
1620}
1621continue {
1622 ();
1623}
bc1cc2c3
DM
1624####
1625# file handles
1626no strict;
1627my $mfh;
1628open F;
1629open *F;
1630open $fh;
1631open $mfh;
1632open 'a+b';
1633select *F;
1634select F;
1635select $f;
1636select $mfh;
1637select 'a+b';
a7fd8ef6
DM
1638####
1639# 'my' works with padrange op
1640my($z, @z);
1641my $m1;
1642$m1 = 1;
1643$z = $m1;
1644my $m2 = 2;
1645my($m3, $m4);
1646($m3, $m4) = (1, 2);
1647@z = ($m3, $m4);
1648my($m5, $m6) = (1, 2);
1649my($m7, undef, $m8) = (1, 2, 3);
1650@z = ($m7, undef, $m8);
1651($m7, undef, $m8) = (1, 2, 3);
1652####
1653# 'our/local' works with padrange op
a7fd8ef6
DM
1654our($z, @z);
1655our $o1;
0298c760 1656no strict;
a7fd8ef6
DM
1657local $o11;
1658$o1 = 1;
1659local $o1 = 1;
1660$z = $o1;
1661$z = local $o1;
1662our $o2 = 2;
1663our($o3, $o4);
1664($o3, $o4) = (1, 2);
1665local($o3, $o4) = (1, 2);
1666@z = ($o3, $o4);
1667@z = local($o3, $o4);
1668our($o5, $o6) = (1, 2);
1669our($o7, undef, $o8) = (1, 2, 3);
1670@z = ($o7, undef, $o8);
1671@z = local($o7, undef, $o8);
1672($o7, undef, $o8) = (1, 2, 3);
1673local($o7, undef, $o8) = (1, 2, 3);
1674####
1675# 'state' works with padrange op
412989c2 1676# CONTEXT no strict; use feature 'state';
a7fd8ef6
DM
1677state($z, @z);
1678state $s1;
1679$s1 = 1;
1680$z = $s1;
1681state $s2 = 2;
1682state($s3, $s4);
1683($s3, $s4) = (1, 2);
1684@z = ($s3, $s4);
1685# assignment of state lists isn't implemented yet
1686#state($s5, $s6) = (1, 2);
1687#state($s7, undef, $s8) = (1, 2, 3);
1688#@z = ($s7, undef, $s8);
1689($s7, undef, $s8) = (1, 2, 3);
1690####
df2b00e8 1691# anon arrays with padrange
a7fd8ef6
DM
1692my($a, $b);
1693my $c = [$a, $b];
1694my $d = {$a, $b};
1695####
1696# slices with padrange
1697my($a, $b);
1698my(@x, %y);
1699@x = @x[$a, $b];
1700@x = @y{$a, $b};
1701####
1702# binops with padrange
1703my($a, $b, $c);
1704$c = $a cmp $b;
1705$c = $a + $b;
1706$a += $b;
1707$c = $a - $b;
1708$a -= $b;
1709$c = my $a1 cmp $b;
1710$c = my $a2 + $b;
1711$a += my $b1;
1712$c = my $a3 - $b;
1713$a -= my $b2;
1714####
1715# 'x' with padrange
1716my($a, $b, $c, $d, @e);
1717$c = $a x $b;
1718$a x= $b;
1719@e = ($a) x $d;
1720@e = ($a, $b) x $d;
1721@e = ($a, $b, $c) x $d;
1722@e = ($a, 1) x $d;
d5524600
DM
1723####
1724# @_ with padrange
1725my($a, $b, $c) = @_;
ce4062e7
AC
1726####
1727# SKIP ?$] < 5.017004 && "lexical subs not implemented on this Perl version"
ce4062e7
AC
1728# lexical subroutine
1729use feature 'lexical_subs';
601448c3 1730no warnings "experimental::lexical_subs";
ce4062e7
AC
1731my sub f {}
1732print f();
d4f1bfe7
FC
1733>>>>
1734use feature 'lexical_subs';
1735BEGIN {${^WARNING_BITS} = "TUUUUUUUUUUUUTUUU\005"}
1736my sub f {
1737 BEGIN {${^WARNING_BITS} = "TUUUUUUUUUUUUTUU\005"}
1738
1739}
1740BEGIN {${^WARNING_BITS} = "TUUUUUUUUUUUUTUU\005"}
1741print f();
f0cf3754
AC
1742####
1743# SKIP ?$] < 5.017004 && "lexical subs not implemented on this Perl version"
f0cf3754
AC
1744# lexical "state" subroutine
1745use feature 'state', 'lexical_subs';
1746no warnings 'experimental::lexical_subs';
1747state sub f {}
1748print f();
d4f1bfe7
FC
1749>>>>
1750use feature 'lexical_subs';
1751BEGIN {${^WARNING_BITS} = "TUUUUUUUUUUUUTUUU\005"}
1752CORE::state sub f {
1753 BEGIN {${^WARNING_BITS} = "TUUUUUUUUUUUUTUU\005"}
1754 use feature 'state';
1755
1756}
1757BEGIN {${^WARNING_BITS} = "TUUUUUUUUUUUUTUU\005"}
1758use feature 'state';
1759print f();
bcbe2b27 1760####
8443930e 1761# SKIP ?$] < 5.017004 && "lexical subs not implemented on this Perl version"
8443930e
FC
1762# lexical subroutine scoping
1763# CONTEXT use feature 'lexical_subs'; no warnings 'experimental::lexical_subs';
1764{
1765 {
1766 my sub a { die; }
1767 {
1768 foo();
1769 my sub b;
1770 b();
1771 main::b();
d49c3562
FC
1772 &main::b;
1773 &main::b();
1774 my $b = \&main::b;
1775 sub b { $b; }
8443930e
FC
1776 }
1777 }
1778 b();
1779}
1780####
bcbe2b27
FC
1781# Elements of %# should not be confused with $#{ array }
1782() = ${#}{'foo'};
c4cf781e 1783####
ddb55548
FC
1784# $; [perl #12335]
1785$_ = $;;
1786do {
1787 $;
1788};
1789####
c4cf781e
FC
1790# [perl #121050] Prototypes with whitespace
1791sub _121050(\$ \$) { }
1792_121050($a,$b);
1793sub _121050empty( ) {}
1794() = _121050empty() + 1;
1795>>>>
1796_121050 $a, $b;
1797() = _121050empty + 1;
b024352e 1798####
c65b7c4d
FC
1799# Ampersand calls and scalar context
1800# OPTIONS -P
1801package prototest;
1802sub foo($$);
1803foo(bar(),baz());
1804>>>>
1805package prototest;
1806&foo(scalar bar(), scalar baz());
1807####
b024352e
DM
1808# ensure aelemfast works in the range -128..127 and that there's no
1809# funky edge cases
1810my $x;
1811no strict 'vars';
1812$x = $a[-256] + $a[-255] + $a[-129] + $a[-128] + $a[-127] + $a[-1] + $a[0];
1813$x = $a[1] + $a[126] + $a[127] + $a[128] + $a[255] + $a[256];
1814my @b;
1815$x = $b[-256] + $b[-255] + $b[-129] + $b[-128] + $b[-127] + $b[-1] + $b[0];
1816$x = $b[1] + $b[126] + $b[127] + $b[128] + $b[255] + $b[256];
e09d73a6
DIM
1817####
1818# 'm' must be preserved in m??
1819m??;
c8ec376c
FC
1820####
1821# \(@array) and \(..., (@array), ...)
1822my(@array, %hash, @a, @b, %c, %d);
1823() = \(@array);
1824() = \(%hash);
1825() = \(@a, (@b), (%c), %d);
1826() = \(@Foo::array);
1827() = \(%Foo::hash);
1828() = \(@Foo::a, (@Foo::b), (%Foo::c), %Foo::d);
a958cfbb
FC
1829####
1830# subs synonymous with keywords
1831main::our();
1832main::pop();
1833state();
1834use feature 'state';
1835main::state();
9187b6e4
FC
1836####
1837# lvalue references
baabe3fb 1838# CONTEXT use feature "state", 'refaliasing', 'lexical_subs'; no warnings 'experimental';
9187b6e4
FC
1839our $x;
1840\$x = \$x;
1841my $m;
1842\$m = \$x;
1843\my $n = \$x;
1844(\$x) = @_;
1845\($x) = @_;
1846\($m) = @_;
1847(\$m) = @_;
1848\my($p) = @_;
1849(\my $r) = @_;
1850\($x, my $a) = @{[\$x, \$x]};
1851(\$x, \my $b) = @{[\$x, \$x]};
1852\local $x = \3;
1853\local($x) = \3;
1854\state $c = \3;
1855\state($d) = \3;
1856\our $e = \3;
1857\our($f) = \3;
1858\$_[0] = foo();
1859\($_[1]) = foo();
1860my @a;
1861\$a[0] = foo();
1862\($a[1]) = foo();
1863\local($a[1]) = foo();
1864\@a[0,1] = foo();
1865\(@a[2,3]) = foo();
1866\local @a[0,1] = (\$a)x2;
1867\$_{a} = foo();
1868\($_{b}) = foo();
1869my %h;
1870\$h{a} = foo();
1871\($h{b}) = foo();
1872\local $h{a} = \$x;
1873\local($h{b}) = \$x;
1874\@h{'a','b'} = foo();
1875\(@h{2,3}) = foo();
1876\local @h{'a','b'} = (\$x)x2;
1877\@_ = foo();
1878\@a = foo();
1879(\@_) = foo();
1880(\@a) = foo();
1881\my @c = foo();
1882(\my @d) = foo();
1883\(@_) = foo();
1884\(@a) = foo();
1885\my(@g) = foo();
1886\local @_ = \@_;
1887(\local @_) = \@_;
1888\state @e = [1..3];
1889\state(@f) = \3;
1890\our @i = [1..3];
1891\our(@h) = \3;
1892\%_ = foo();
1893\%h = foo();
1894(\%_) = foo();
1895(\%h) = foo();
1896\my %c = foo();
1897(\my %d) = foo();
1898\local %_ = \%h;
1899(\local %_) = \%h;
1900\state %y = {1,2};
1901\our %z = {1,2};
1902(\our %zz) = {1,2};
1903\&a = foo();
1904(\&a) = foo();
1905\(&a) = foo();
1906{
1907 my sub a;
1908 \&a = foo();
1909 (\&a) = foo();
1910 \(&a) = foo();
1911}
1912(\$_, $_) = \(1, 2);
1913$_ == 3 ? \$_ : $_ = \3;
1914$_ == 3 ? \$_ : \$x = \3;
1915\($_ == 3 ? $_ : $x) = \3;
1916for \my $topic (\$1, \$2) {
1917 die;
1918}
1919for \state $topic (\$1, \$2) {
1920 die;
1921}
1922for \our $topic (\$1, \$2) {
1923 die;
1924}
1925for \$_ (\$1, \$2) {
1926 die;
1927}
1928for \my @a ([1,2], [3,4]) {
1929 die;
1930}
1931for \state @a ([1,2], [3,4]) {
1932 die;
1933}
1934for \our @a ([1,2], [3,4]) {
1935 die;
1936}
1937for \@_ ([1,2], [3,4]) {
1938 die;
1939}
1940for \my %a ({5,6}, {7,8}) {
1941 die;
1942}
1943for \our %a ({5,6}, {7,8}) {
1944 die;
1945}
1946for \state %a ({5,6}, {7,8}) {
1947 die;
1948}
1949for \%_ ({5,6}, {7,8}) {
1950 die;
1951}
1952{
1953 my sub a;
1954 for \&a (sub { 9; }, sub { 10; }) {
1955 die;
1956 }
1957}
1958for \&a (sub { 9; }, sub { 10; }) {
1959 die;
1960}
1961>>>>
1962our $x;
1963\$x = \$x;
1964my $m;
1965\$m = \$x;
1966\my $n = \$x;
1967(\$x) = @_;
1968(\$x) = @_;
1969(\$m) = @_;
1970(\$m) = @_;
1971(\my $p) = @_;
1972(\my $r) = @_;
1973(\$x, \my $a) = @{[\$x, \$x];};
1974(\$x, \my $b) = @{[\$x, \$x];};
1975\local $x = \3;
1976(\local $x) = \3;
1977\state $c = \3;
1978(\state $d) = \3;
1979\our $e = \3;
1980(\our $f) = \3;
1981\$_[0] = foo();
1982(\$_[1]) = foo();
1983my @a;
1984\$a[0] = foo();
1985(\$a[1]) = foo();
1986(\local $a[1]) = foo();
1987(\@a[0, 1]) = foo();
1988(\@a[2, 3]) = foo();
1989(\local @a[0, 1]) = (\$a) x 2;
1990\$_{'a'} = foo();
1991(\$_{'b'}) = foo();
1992my %h;
1993\$h{'a'} = foo();
1994(\$h{'b'}) = foo();
1995\local $h{'a'} = \$x;
1996(\local $h{'b'}) = \$x;
1997(\@h{'a', 'b'}) = foo();
1998(\@h{2, 3}) = foo();
1999(\local @h{'a', 'b'}) = (\$x) x 2;
2000\@_ = foo();
2001\@a = foo();
2002(\@_) = foo();
2003(\@a) = foo();
2004\my @c = foo();
2005(\my @d) = foo();
2006(\(@_)) = foo();
2007(\(@a)) = foo();
2008(\(my @g)) = foo();
2009\local @_ = \@_;
2010(\local @_) = \@_;
2011\state @e = [1..3];
2012(\(state @f)) = \3;
2013\our @i = [1..3];
2014(\(our @h)) = \3;
2015\%_ = foo();
2016\%h = foo();
2017(\%_) = foo();
2018(\%h) = foo();
2019\my %c = foo();
2020(\my %d) = foo();
2021\local %_ = \%h;
2022(\local %_) = \%h;
2023\state %y = {1, 2};
2024\our %z = {1, 2};
2025(\our %zz) = {1, 2};
2026\&a = foo();
2027(\&a) = foo();
2028(\&a) = foo();
2029{
2030 my sub a;
2031 \&a = foo();
2032 (\&a) = foo();
2033 (\&a) = foo();
2034}
2035(\$_, $_) = \(1, 2);
2036$_ == 3 ? \$_ : $_ = \3;
2037$_ == 3 ? \$_ : \$x = \3;
2038($_ == 3 ? \$_ : \$x) = \3;
2039foreach \my $topic (\$1, \$2) {
2040 die;
2041}
2042foreach \state $topic (\$1, \$2) {
2043 die;
2044}
2045foreach \our $topic (\$1, \$2) {
2046 die;
2047}
2048foreach \$_ (\$1, \$2) {
2049 die;
2050}
2051foreach \my @a ([1, 2], [3, 4]) {
2052 die;
2053}
2054foreach \state @a ([1, 2], [3, 4]) {
2055 die;
2056}
2057foreach \our @a ([1, 2], [3, 4]) {
2058 die;
2059}
2060foreach \@_ ([1, 2], [3, 4]) {
2061 die;
2062}
2063foreach \my %a ({5, 6}, {7, 8}) {
2064 die;
2065}
2066foreach \our %a ({5, 6}, {7, 8}) {
2067 die;
2068}
2069foreach \state %a ({5, 6}, {7, 8}) {
2070 die;
2071}
2072foreach \%_ ({5, 6}, {7, 8}) {
2073 die;
2074}
2075{
2076 my sub a;
2077 foreach \&a (sub { 9; } , sub { 10; } ) {
2078 die;
2079 }
2080}
2081foreach \&a (sub { 9; } , sub { 10; } ) {
2082 die;
2083}
3b4e2a4d
FC
2084####
2085# join $foo, pos
2086my $foo;
2087$_ = join $foo, pos
2088>>>>
2089my $foo;
2090$_ = join('???', pos $_);