Commit | Line | Data |
87a42246 |
1 | #!./perl |
2 | |
3 | BEGIN { |
62a6bb71 |
4 | unshift @INC, 't'; |
9cd8f857 |
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 | } |
87a42246 |
10 | } |
11 | |
87a42246 |
12 | use warnings; |
13 | use strict; |
e9c69003 |
14 | BEGIN { |
15 | # BEGIN block is acutally a subroutine :-) |
16 | return unless $] > 5.009; |
17 | require feature; |
18 | feature->import(':5.10'); |
19 | } |
689e417f |
20 | use Test::More tests => 83; |
1bb3cfc5 |
21 | use Config (); |
87a42246 |
22 | |
23 | use B::Deparse; |
09d856fb |
24 | my $deparse = B::Deparse->new(); |
25 | ok($deparse); |
87a42246 |
26 | |
27 | # Tell B::Deparse about our ambient pragmas |
0ced6c29 |
28 | { my ($hint_bits, $warning_bits, $hinthash); |
29 | BEGIN { ($hint_bits, $warning_bits, $hinthash) = ($^H, ${^WARNING_BITS}, \%^H); } |
87a42246 |
30 | $deparse->ambient_pragmas ( |
31 | hint_bits => $hint_bits, |
32 | warning_bits => $warning_bits, |
0ced6c29 |
33 | '$[' => 0 + $[, |
34 | '%^H' => $hinthash, |
87a42246 |
35 | ); |
36 | } |
37 | |
ad46c0be |
38 | $/ = "\n####\n"; |
39 | while (<DATA>) { |
40 | chomp; |
e9c69003 |
41 | # This code is pinched from the t/lib/common.pl for TODO. |
42 | # It's not clear how to avoid duplication |
b871937f |
43 | # Now tweaked a bit to do skip or todo |
44 | my %reason; |
45 | foreach my $what (qw(skip todo)) { |
46 | s/^#\s*\U$what\E\s*(.*)\n//m and $reason{$what} = $1; |
47 | # If the SKIP reason starts ? then it's taken as a code snippet to |
48 | # evaluate. This provides the flexibility to have conditional SKIPs |
49 | if ($reason{$what} && $reason{$what} =~ s/^\?//) { |
50 | my $temp = eval $reason{$what}; |
51 | if ($@) { |
52 | die "# In \U$what\E code reason:\n# $reason{$what}\n$@"; |
53 | } |
54 | $reason{$what} = $temp; |
e9c69003 |
55 | } |
e9c69003 |
56 | } |
57 | |
4a4b8592 |
58 | s/^\s*#\s*(.*)$//mg; |
ec59cdf2 |
59 | my ($num, $testname) = $1 =~ m/(\d+)\s*(.*)/; |
e9c69003 |
60 | |
b871937f |
61 | if ($reason{skip}) { |
e9c69003 |
62 | # Like this to avoid needing a label SKIP: |
b871937f |
63 | Test::More->builder->skip($reason{skip}); |
e9c69003 |
64 | next; |
65 | } |
66 | |
ad46c0be |
67 | my ($input, $expected); |
68 | if (/(.*)\n>>>>\n(.*)/s) { |
69 | ($input, $expected) = ($1, $2); |
70 | } |
71 | else { |
72 | ($input, $expected) = ($_, $_); |
73 | } |
87a42246 |
74 | |
ad46c0be |
75 | my $coderef = eval "sub {$input}"; |
87a42246 |
76 | |
ad46c0be |
77 | if ($@) { |
ec59cdf2 |
78 | diag("$num deparsed: $@"); |
79 | ok(0, $testname); |
ad46c0be |
80 | } |
81 | else { |
82 | my $deparsed = $deparse->coderef2text( $coderef ); |
31c6271a |
83 | my $regex = $expected; |
84 | $regex =~ s/(\S+)/\Q$1/g; |
85 | $regex =~ s/\s+/\\s+/g; |
86 | $regex = '^\{\s*' . $regex . '\s*\}$'; |
b871937f |
87 | |
4a4b8592 |
88 | local $::TODO = $reason{todo}; |
ec59cdf2 |
89 | like($deparsed, qr/$regex/, $testname); |
87a42246 |
90 | } |
87a42246 |
91 | } |
92 | |
87a42246 |
93 | use constant 'c', 'stuff'; |
09d856fb |
94 | is((eval "sub ".$deparse->coderef2text(\&c))->(), 'stuff'); |
87a42246 |
95 | |
09d856fb |
96 | my $a = 0; |
97 | is("{\n (-1) ** \$a;\n}", $deparse->coderef2text(sub{(-1) ** $a })); |
87a42246 |
98 | |
d989cdac |
99 | use constant cr => ['hello']; |
100 | my $string = "sub " . $deparse->coderef2text(\&cr); |
0707d6cc |
101 | my $val = (eval $string)->() or diag $string; |
102 | is(ref($val), 'ARRAY'); |
103 | is($val->[0], 'hello'); |
87a42246 |
104 | |
87a42246 |
105 | my $path = join " ", map { qq["-I$_"] } @INC; |
87a42246 |
106 | |
7cde0a5f |
107 | $a = `$^X $path "-MO=Deparse" -anlwi.bak -e 1 2>&1`; |
e69a2255 |
108 | $a =~ s/-e syntax OK\n//g; |
d2bc402e |
109 | $a =~ s/.*possible typo.*\n//; # Remove warning line |
87a42246 |
110 | $a =~ s{\\340\\242}{\\s} if (ord("\\") == 224); # EBCDIC, cp 1047 or 037 |
111 | $a =~ s{\\274\\242}{\\s} if (ord("\\") == 188); # $^O eq 'posix-bc' |
112 | $b = <<'EOF'; |
d2bc402e |
113 | BEGIN { $^I = ".bak"; } |
114 | BEGIN { $^W = 1; } |
115 | BEGIN { $/ = "\n"; $\ = "\n"; } |
87a42246 |
116 | LINE: while (defined($_ = <ARGV>)) { |
117 | chomp $_; |
f86ea535 |
118 | our(@F) = split(' ', $_, 0); |
87a42246 |
119 | '???'; |
120 | } |
87a42246 |
121 | EOF |
09d856fb |
122 | is($a, $b); |
87a42246 |
123 | |
5b4ee549 |
124 | $a = `$^X $path "-MO=Deparse" -e "use constant PI => 4" 2>&1`; |
125 | $a =~ s/-e syntax OK\n//g; |
126 | is($a, "use constant ('PI', 4);\n", |
127 | "Proxy Constant Subroutines must not show up as (incorrect) prototypes"); |
128 | |
579a54dc |
129 | #Re: perlbug #35857, patch #24505 |
b3980c39 |
130 | #handle warnings::register-ed packages properly. |
131 | package B::Deparse::Wrapper; |
132 | use strict; |
133 | use warnings; |
134 | use warnings::register; |
135 | sub getcode { |
579a54dc |
136 | my $deparser = B::Deparse->new(); |
b3980c39 |
137 | return $deparser->coderef2text(shift); |
138 | } |
139 | |
2990415a |
140 | package Moo; |
141 | use overload '0+' => sub { 42 }; |
142 | |
b3980c39 |
143 | package main; |
144 | use strict; |
145 | use warnings; |
71c4dbc3 |
146 | use constant GLIPP => 'glipp'; |
2990415a |
147 | use constant PI => 4; |
148 | use constant OVERLOADED_NUMIFICATION => bless({}, 'Moo'); |
3779476a |
149 | use Fcntl qw/O_TRUNC O_APPEND O_EXCL/; |
aaf9c2b2 |
150 | BEGIN { delete $::Fcntl::{O_APPEND}; } |
2990415a |
151 | use POSIX qw/O_CREAT/; |
b3980c39 |
152 | sub test { |
579a54dc |
153 | my $val = shift; |
154 | my $res = B::Deparse::Wrapper::getcode($val); |
09d856fb |
155 | like( $res, qr/use warnings/); |
b3980c39 |
156 | } |
157 | my ($q,$p); |
158 | my $x=sub { ++$q,++$p }; |
159 | test($x); |
160 | eval <<EOFCODE and test($x); |
161 | package bar; |
162 | use strict; |
163 | use warnings; |
164 | use warnings::register; |
165 | package main; |
166 | 1 |
167 | EOFCODE |
168 | |
ad46c0be |
169 | __DATA__ |
14a55f98 |
170 | # 2 |
ad46c0be |
171 | 1; |
172 | #### |
14a55f98 |
173 | # 3 |
ad46c0be |
174 | { |
175 | no warnings; |
176 | '???'; |
177 | 2; |
178 | } |
179 | #### |
14a55f98 |
180 | # 4 |
ad46c0be |
181 | my $test; |
182 | ++$test and $test /= 2; |
183 | >>>> |
184 | my $test; |
185 | $test /= 2 if ++$test; |
186 | #### |
14a55f98 |
187 | # 5 |
ad46c0be |
188 | -((1, 2) x 2); |
189 | #### |
14a55f98 |
190 | # 6 |
ad46c0be |
191 | { |
192 | my $test = sub : lvalue { |
193 | my $x; |
194 | } |
195 | ; |
196 | } |
197 | #### |
14a55f98 |
198 | # 7 |
ad46c0be |
199 | { |
200 | my $test = sub : method { |
201 | my $x; |
202 | } |
203 | ; |
204 | } |
205 | #### |
14a55f98 |
206 | # 8 |
8e5dadda |
207 | # Was sub : locked method { ... } |
208 | # This number could be re-used. |
ad46c0be |
209 | #### |
14a55f98 |
210 | # 9 |
87a42246 |
211 | { |
ad46c0be |
212 | 234; |
f99a63a2 |
213 | } |
ad46c0be |
214 | continue { |
215 | 123; |
87a42246 |
216 | } |
ce4e655d |
217 | #### |
14a55f98 |
218 | # 10 |
ce4e655d |
219 | my $x; |
220 | print $main::x; |
221 | #### |
14a55f98 |
222 | # 11 |
ce4e655d |
223 | my @x; |
224 | print $main::x[1]; |
14a55f98 |
225 | #### |
226 | # 12 |
227 | my %x; |
228 | $x{warn()}; |
ad8caead |
229 | #### |
230 | # 13 |
231 | my $foo; |
232 | $_ .= <ARGV> . <$foo>; |
cef22867 |
233 | #### |
234 | # 14 |
235 | my $foo = "Ab\x{100}\200\x{200}\377Cd\000Ef\x{1000}\cA\x{2000}\cZ"; |
4ae52e81 |
236 | #### |
237 | # 15 |
238 | s/x/'y';/e; |
241416b8 |
239 | #### |
240 | # 16 - various lypes of loop |
241 | { my $x; } |
242 | #### |
243 | # 17 |
244 | while (1) { my $k; } |
245 | #### |
246 | # 18 |
247 | my ($x,@a); |
248 | $x=1 for @a; |
249 | >>>> |
250 | my($x, @a); |
0bb5f065 |
251 | $x = 1 foreach (@a); |
241416b8 |
252 | #### |
253 | # 19 |
254 | for (my $i = 0; $i < 2;) { |
255 | my $z = 1; |
256 | } |
257 | #### |
258 | # 20 |
259 | for (my $i = 0; $i < 2; ++$i) { |
260 | my $z = 1; |
261 | } |
262 | #### |
263 | # 21 |
264 | for (my $i = 0; $i < 2; ++$i) { |
265 | my $z = 1; |
266 | } |
267 | #### |
268 | # 22 |
269 | my $i; |
270 | while ($i) { my $z = 1; } continue { $i = 99; } |
271 | #### |
272 | # 23 |
09d856fb |
273 | foreach my $i (1, 2) { |
241416b8 |
274 | my $z = 1; |
275 | } |
276 | #### |
277 | # 24 |
278 | my $i; |
279 | foreach $i (1, 2) { |
280 | my $z = 1; |
281 | } |
282 | #### |
283 | # 25 |
284 | my $i; |
285 | foreach my $i (1, 2) { |
286 | my $z = 1; |
287 | } |
288 | #### |
289 | # 26 |
290 | foreach my $i (1, 2) { |
291 | my $z = 1; |
292 | } |
293 | #### |
294 | # 27 |
295 | foreach our $i (1, 2) { |
296 | my $z = 1; |
297 | } |
298 | #### |
299 | # 28 |
300 | my $i; |
301 | foreach our $i (1, 2) { |
302 | my $z = 1; |
303 | } |
3ac6e0f9 |
304 | #### |
305 | # 29 |
306 | my @x; |
307 | print reverse sort(@x); |
308 | #### |
309 | # 30 |
310 | my @x; |
311 | print((sort {$b cmp $a} @x)); |
312 | #### |
313 | # 31 |
314 | my @x; |
315 | print((reverse sort {$b <=> $a} @x)); |
36d57d93 |
316 | #### |
317 | # 32 |
318 | our @a; |
319 | print $_ foreach (reverse @a); |
aae53c41 |
320 | #### |
579a54dc |
321 | # 33 |
aae53c41 |
322 | our @a; |
323 | print $_ foreach (reverse 1, 2..5); |
f86ea535 |
324 | #### |
325 | # 34 (bug #38684) |
326 | our @ary; |
327 | @ary = split(' ', 'foo', 0); |
31c6271a |
328 | #### |
329 | # 35 (bug #40055) |
330 | do { () }; |
331 | #### |
332 | # 36 (ibid.) |
333 | do { my $x = 1; $x }; |
d9002312 |
334 | #### |
335 | # 37 <20061012113037.GJ25805@c4.convolution.nl> |
336 | my $f = sub { |
337 | +{[]}; |
338 | } ; |
8b2d6640 |
339 | #### |
340 | # 38 (bug #43010) |
341 | '!@$%'->(); |
342 | #### |
343 | # 39 (ibid.) |
344 | ::(); |
345 | #### |
346 | # 40 (ibid.) |
347 | '::::'->(); |
348 | #### |
349 | # 41 (ibid.) |
350 | &::::; |
09d856fb |
351 | #### |
352 | # 42 |
353 | my $bar; |
354 | 'Foo'->$bar('orz'); |
355 | #### |
356 | # 43 |
357 | 'Foo'->bar('orz'); |
358 | #### |
359 | # 44 |
360 | 'Foo'->bar; |
0ced6c29 |
361 | #### |
e9c69003 |
362 | # SKIP ?$] < 5.010 && "say not implemented on this Perl version" |
7ddd1a01 |
363 | # 45 say |
364 | say 'foo'; |
365 | #### |
e9c69003 |
366 | # SKIP ?$] < 5.010 && "state vars not implemented on this Perl version" |
7ddd1a01 |
367 | # 46 state vars |
0ced6c29 |
368 | state $x = 42; |
369 | #### |
e9c69003 |
370 | # SKIP ?$] < 5.010 && "state vars not implemented on this Perl version" |
7ddd1a01 |
371 | # 47 state var assignment |
372 | { |
373 | my $y = (state $x = 42); |
374 | } |
375 | #### |
e9c69003 |
376 | # SKIP ?$] < 5.010 && "state vars not implemented on this Perl version" |
7ddd1a01 |
377 | # 48 state vars in anoymous subroutines |
378 | $a = sub { |
379 | state $x; |
380 | return $x++; |
381 | } |
382 | ; |
644741fd |
383 | #### |
384 | # SKIP ?$] < 5.011 && 'each @array not implemented on this Perl version' |
385 | # 49 each @array; |
386 | each @ARGV; |
387 | each @$a; |
388 | #### |
389 | # SKIP ?$] < 5.011 && 'each @array not implemented on this Perl version' |
390 | # 50 keys @array; values @array |
391 | keys @$a if keys @ARGV; |
392 | values @ARGV if values @$a; |
35925e80 |
393 | #### |
43b09ad7 |
394 | # 51 Anonymous arrays and hashes, and references to them |
35925e80 |
395 | my $a = {}; |
396 | my $b = \{}; |
397 | my $c = []; |
398 | my $d = \[]; |
9210de83 |
399 | #### |
400 | # SKIP ?$] < 5.010 && "smartmatch and given/when not implemented on this Perl version" |
43b09ad7 |
401 | # 52 implicit smartmatch in given/when |
9210de83 |
402 | given ('foo') { |
403 | when ('bar') { continue; } |
404 | when ($_ ~~ 'quux') { continue; } |
405 | default { 0; } |
406 | } |
7ecdd211 |
407 | #### |
408 | # 53 conditions in elsifs (regression in change #33710 which fixed bug #37302) |
409 | if ($a) { x(); } |
410 | elsif ($b) { x(); } |
411 | elsif ($a and $b) { x(); } |
412 | elsif ($a or $b) { x(); } |
413 | else { x(); } |
03b22f1b |
414 | #### |
415 | # 54 interpolation in regexps |
416 | my($y, $t); |
417 | /x${y}z$t/; |
227375e1 |
418 | #### |
4a4b8592 |
419 | # TODO new undocumented cpan-bug #33708 |
227375e1 |
420 | # 55 (cpan-bug #33708) |
421 | %{$_ || {}} |
422 | #### |
4a4b8592 |
423 | # TODO hash constants not yet fixed |
227375e1 |
424 | # 56 (cpan-bug #33708) |
425 | use constant H => { "#" => 1 }; H->{"#"} |
426 | #### |
4a4b8592 |
427 | # TODO optimized away 0 not yet fixed |
227375e1 |
428 | # 57 (cpan-bug #33708) |
429 | foreach my $i (@_) { 0 } |
edbe35ea |
430 | #### |
431 | # 58 tests with not, not optimized |
07f3cdf5 |
432 | my $c; |
edbe35ea |
433 | x() unless $a; |
434 | x() if not $a and $b; |
435 | x() if $a and not $b; |
436 | x() unless not $a and $b; |
437 | x() unless $a and not $b; |
438 | x() if not $a or $b; |
439 | x() if $a or not $b; |
440 | x() unless not $a or $b; |
441 | x() unless $a or not $b; |
07f3cdf5 |
442 | x() if $a and not $b and $c; |
443 | x() if not $a and $b and not $c; |
444 | x() unless $a and not $b and $c; |
445 | x() unless not $a and $b and not $c; |
446 | x() if $a or not $b or $c; |
447 | x() if not $a or $b or not $c; |
448 | x() unless $a or not $b or $c; |
449 | x() unless not $a or $b or not $c; |
edbe35ea |
450 | #### |
451 | # 59 tests with not, optimized |
07f3cdf5 |
452 | my $c; |
edbe35ea |
453 | x() if not $a; |
454 | x() unless not $a; |
455 | x() if not $a and not $b; |
456 | x() unless not $a and not $b; |
457 | x() if not $a or not $b; |
458 | x() unless not $a or not $b; |
07f3cdf5 |
459 | x() if not $a and not $b and $c; |
460 | x() unless not $a and not $b and $c; |
461 | x() if not $a or not $b or $c; |
462 | x() unless not $a or not $b or $c; |
463 | x() if not $a and not $b and not $c; |
464 | x() unless not $a and not $b and not $c; |
465 | x() if not $a or not $b or not $c; |
466 | x() unless not $a or not $b or not $c; |
467 | x() unless not $a or not $b or not $c; |
edbe35ea |
468 | >>>> |
07f3cdf5 |
469 | my $c; |
edbe35ea |
470 | x() unless $a; |
471 | x() if $a; |
472 | x() unless $a or $b; |
473 | x() if $a or $b; |
474 | x() unless $a and $b; |
07f3cdf5 |
475 | x() if $a and $b; |
476 | x() if not $a || $b and $c; |
477 | x() unless not $a || $b and $c; |
478 | x() if not $a && $b or $c; |
479 | x() unless not $a && $b or $c; |
480 | x() unless $a or $b or $c; |
481 | x() if $a or $b or $c; |
482 | x() unless $a and $b and $c; |
483 | x() if $a and $b and $c; |
484 | x() unless not $a && $b && $c; |
71c4dbc3 |
485 | #### |
486 | # 60 tests that should be constant folded |
487 | x() if 1; |
488 | x() if GLIPP; |
489 | x() if !GLIPP; |
490 | x() if GLIPP && GLIPP; |
491 | x() if !GLIPP || GLIPP; |
492 | x() if do { GLIPP }; |
493 | x() if do { no warnings 'void'; 5; GLIPP }; |
494 | x() if do { !GLIPP }; |
495 | if (GLIPP) { x() } else { z() } |
496 | if (!GLIPP) { x() } else { z() } |
497 | if (GLIPP) { x() } elsif (GLIPP) { z() } |
498 | if (!GLIPP) { x() } elsif (GLIPP) { z() } |
499 | if (GLIPP) { x() } elsif (!GLIPP) { z() } |
500 | if (!GLIPP) { x() } elsif (!GLIPP) { z() } |
501 | if (!GLIPP) { x() } elsif (!GLIPP) { z() } elsif (GLIPP) { t() } |
502 | if (!GLIPP) { x() } elsif (!GLIPP) { z() } elsif (!GLIPP) { t() } |
503 | if (!GLIPP) { x() } elsif (!GLIPP) { z() } elsif (!GLIPP) { t() } |
504 | >>>> |
505 | x(); |
506 | x(); |
507 | '???'; |
508 | x(); |
509 | x(); |
510 | x(); |
511 | x(); |
512 | do { |
513 | '???' |
514 | }; |
515 | do { |
516 | x() |
517 | }; |
518 | do { |
519 | z() |
520 | }; |
521 | do { |
522 | x() |
523 | }; |
524 | do { |
525 | z() |
526 | }; |
527 | do { |
528 | x() |
529 | }; |
530 | '???'; |
531 | do { |
532 | t() |
533 | }; |
534 | '???'; |
535 | !1; |
536 | #### |
ac0f1413 |
537 | # TODO ? $Config::Config{useithreads} && "doesn't work with threads" |
71c4dbc3 |
538 | # 61 tests that shouldn't be constant folded |
ac0f1413 |
539 | # It might be fundamentally impossible to make this work on ithreads, in which |
540 | # case the TODO should become a SKIP |
71c4dbc3 |
541 | x() if $a; |
542 | if ($a == 1) { x() } elsif ($b == 2) { z() } |
543 | if (do { foo(); GLIPP }) { x() } |
544 | if (do { $a++; GLIPP }) { x() } |
545 | >>>> |
546 | x() if $a; |
547 | if ($a == 1) { x(); } elsif ($b == 2) { z(); } |
2990415a |
548 | if (do { foo(); GLIPP }) { x(); } |
549 | if (do { ++$a; GLIPP }) { x(); } |
550 | #### |
551 | # 62 tests for deparsing constants |
552 | warn PI; |
553 | #### |
554 | # 63 tests for deparsing imported constants |
3779476a |
555 | warn O_TRUNC; |
2990415a |
556 | #### |
557 | # 64 tests for deparsing re-exported constants |
558 | warn O_CREAT; |
559 | #### |
560 | # 65 tests for deparsing imported constants that got deleted from the original namespace |
aaf9c2b2 |
561 | warn O_APPEND; |
2990415a |
562 | #### |
ac0f1413 |
563 | # TODO ? $Config::Config{useithreads} && "doesn't work with threads" |
2990415a |
564 | # 66 tests for deparsing constants which got turned into full typeglobs |
ac0f1413 |
565 | # It might be fundamentally impossible to make this work on ithreads, in which |
566 | # case the TODO should become a SKIP |
2990415a |
567 | warn O_EXCL; |
568 | eval '@Fcntl::O_EXCL = qw/affe tiger/;'; |
569 | warn O_EXCL; |
570 | #### |
571 | # 67 tests for deparsing of blessed constant with overloaded numification |
572 | warn OVERLOADED_NUMIFICATION; |
79289e05 |
573 | #### |
574 | # TODO Only strict 'refs' currently supported |
575 | # 68 strict |
576 | no strict; |
577 | $x; |
578 | #### |
579 | # TODO Subsets of warnings could be encoded textually, rather than as bitflips. |
580 | no warnings 'deprecated'; |
581 | my $x; |
582 | #### |
583 | # TODO Better test for CPAN #33708 - the deparsed code has different behaviour |
584 | use strict; |
585 | no warnings; |
586 | |
587 | foreach (0..3) { |
588 | my $x = 2; |
589 | { |
590 | my $x if 0; |
591 | print ++$x, "\n"; |
592 | } |
593 | } |
d83f38d8 |
594 | #### |
595 | my $pi = 4; |
596 | #### |
597 | no warnings; |
598 | my $pi := 4; |
599 | >>>> |
600 | no warnings; |
601 | my $pi = 4; |
602 | #### |
603 | my $pi : = 4; |
604 | >>>> |
605 | my $pi = 4; |
689e417f |
606 | #### |
607 | our @a; |
608 | my @b; |
609 | @a = sort @a; |
610 | @b = sort @b; |
611 | (); |
612 | #### |
613 | our @a; |
614 | my @b; |
615 | @a = reverse @a; |
616 | @b = reverse @b; |
617 | (); |