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Some Ultrix test dodgings.
[p5sagit/p5-mst-13.2.git] / t / op / pack.t
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d50dd4e4 1#!./perl -w
a687059c 2
a1a0e61e 3BEGIN {
4 chdir 't' if -d 't';
20822f61 5 @INC = '../lib';
0b568b5f 6 require './test.pl';
b23b8711 7}
8
db37a92e 9plan tests => 5852;
0b568b5f 10
fa8ec7c1 11use strict;
12use warnings;
b23b8711 13use Config;
14
fa8ec7c1 15my $Is_EBCDIC = (defined $Config{ebcdic} && $Config{ebcdic} eq 'define');
0b568b5f 16my $Perl = which_perl();
c274e827 17
b85d93de 18sub encode_list {
9e17a6b8 19 my @result = map {_qq($_)} @_;
b85d93de 20 if (@result == 1) {
21 return @result;
22 }
23 return '(' . join (', ', @result) . ')';
24}
25
a1a0e61e 26
b85d93de 27sub list_eq ($$) {
28 my ($l, $r) = @_;
c8f824eb 29 return 0 unless @$l == @$r;
b85d93de 30 for my $i (0..$#$l) {
31 if (defined $l->[$i]) {
c8f824eb 32 return 0 unless defined ($r->[$i]) && $l->[$i] eq $r->[$i];
b85d93de 33 } else {
c8f824eb 34 return 0 if defined $r->[$i]
b85d93de 35 }
36 }
37 return 1;
38}
39
40##############################################################################
41#
42# Here starteth the tests
43#
44
fa8ec7c1 45{
0b568b5f 46 my $format = "c2 x5 C C x s d i l a6";
47 # Need the expression in here to force ary[5] to be numeric. This avoids
48 # test2 failing because ary2 goes str->numeric->str and ary doesn't.
49 my @ary = (1,-100,127,128,32767,987.654321098 / 100.0,12345,123456,
50 "abcdef");
51 my $foo = pack($format,@ary);
52 my @ary2 = unpack($format,$foo);
53
54 is($#ary, $#ary2);
55
56 my $out1=join(':',@ary);
57 my $out2=join(':',@ary2);
58 # Using long double NVs may introduce greater accuracy than wanted.
59 $out1 =~ s/:9\.87654321097999\d*:/:9.87654321098:/;
60 $out2 =~ s/:9\.87654321097999\d*:/:9.87654321098:/;
61 is($out1, $out2);
62
63 like($foo, qr/def/);
fa8ec7c1 64}
79072805 65# How about counting bits?
66
fa8ec7c1 67{
0b568b5f 68 my $x;
69 is( ($x = unpack("%32B*", "\001\002\004\010\020\040\100\200\377")), 16 );
79072805 70
0b568b5f 71 is( ($x = unpack("%32b69", "\001\002\004\010\020\040\100\200\017")), 12 );
79072805 72
0b568b5f 73 is( ($x = unpack("%32B69", "\001\002\004\010\020\040\100\200\017")), 9 );
fa8ec7c1 74}
79072805 75
fa8ec7c1 76{
0b568b5f 77 my $sum = 129; # ASCII
78 $sum = 103 if $Is_EBCDIC;
9d116dd7 79
0b568b5f 80 my $x;
81 is( ($x = unpack("%32B*", "Now is the time for all good blurfl")), $sum );
79072805 82
0b568b5f 83 my $foo;
84 open(BIN, $Perl) || die "Can't open $Perl: $!\n";
85 sysread BIN, $foo, 8192;
86 close BIN;
79072805 87
0b568b5f 88 $sum = unpack("%32b*", $foo);
89 my $longway = unpack("b*", $foo);
90 is( $sum, $longway =~ tr/1/1/ );
fa8ec7c1 91}
73a1c01a 92
fa8ec7c1 93{
94 my $x;
0b568b5f 95 is( ($x = unpack("I",pack("I", 0xFFFFFFFF))), 0xFFFFFFFF );
fa8ec7c1 96}
def98dd4 97
fa8ec7c1 98{
0b568b5f 99 # check 'w'
100 my @x = (5,130,256,560,32000,3097152,268435455,1073741844, 2**33,
101 '4503599627365785','23728385234614992549757750638446');
102 my $x = pack('w*', @x);
103 my $y = pack 'H*', '0581028200843081fa0081bd8440ffffff7f8480808014A0808'.
104 '0800087ffffffffffdb19caefe8e1eeeea0c2e1e3e8ede1ee6e';
105
106 is($x, $y);
107
108 my @y = unpack('w*', $y);
109 my $a;
110 while ($a = pop @x) {
111 my $b = pop @y;
112 is($a, $b);
113 }
def98dd4 114
0b568b5f 115 @y = unpack('w2', $x);
def98dd4 116
0b568b5f 117 is(scalar(@y), 2);
118 is($y[1], 130);
a6c48a57 119 $x = pack('w*', 5000000000); $y = '';
120 eval {
121 use Math::BigInt;
122 $y = pack('w*', Math::BigInt::->new(5000000000));
123 };
124 is($x, $y);
196b62db 125
126 $x = pack 'w', ~0;
127 $y = pack 'w', (~0).'';
128 is($x, $y);
129 is(unpack ('w',$x), ~0);
130 is(unpack ('w',$y), ~0);
131
132 $x = pack 'w', ~0 - 1;
133 $y = pack 'w', (~0) - 2;
134
135 if (~0 - 1 == (~0) - 2) {
136 is($x, $y, "NV arithmetic");
137 } else {
138 isnt($x, $y, "IV/NV arithmetic");
139 }
140 cmp_ok(unpack ('w',$x), '==', ~0 - 1);
141 cmp_ok(unpack ('w',$y), '==', ~0 - 2);
203d3f29 142
143 # These should spot that pack 'w' is using NV, not double, on platforms
144 # where IVs are smaller than doubles, and harmlessly pass elsewhere.
145 # (tests for change 16861)
146 my $x0 = 2**54+3;
147 my $y0 = 2**54-2;
148
149 $x = pack 'w', $x0;
150 $y = pack 'w', $y0;
151
152 if ($x0 == $y0) {
153 is($x, $y, "NV arithmetic");
154 } else {
155 isnt($x, $y, "IV/NV arithmetic");
156 }
157 cmp_ok(unpack ('w',$x), '==', $x0);
158 cmp_ok(unpack ('w',$y), '==', $y0);
fa8ec7c1 159}
def98dd4 160
0b568b5f 161
fa8ec7c1 162{
40837afc 163 print "# test exceptions\n";
fa8ec7c1 164 my $x;
165 eval { $x = unpack 'w', pack 'C*', 0xff, 0xff};
0b568b5f 166 like($@, qr/^Unterminated compressed integer/);
def98dd4 167
fa8ec7c1 168 eval { $x = unpack 'w', pack 'C*', 0xff, 0xff, 0xff, 0xff};
0b568b5f 169 like($@, qr/^Unterminated compressed integer/);
def98dd4 170
fa8ec7c1 171 eval { $x = unpack 'w', pack 'C*', 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
0b568b5f 172 like($@, qr/^Unterminated compressed integer/);
0258719b 173
174 eval { $x = pack 'w', -1 };
175 like ($@, qr/^Cannot compress negative numbers/);
176
177 eval { $x = pack 'w', '1'x(1 + length ~0) . 'e0' };
178 like ($@, qr/^Can only compress unsigned integers/);
179
180 SKIP: {
181 # Is this a stupid thing to do on VMS, VOS and other unusual platforms?
71f93cb9 182
183 skip "-- the IEEE infinity model is unavailable in this configuration."
184 if (($^O eq 'VMS') && !defined($Config{useieee}));
185
ad415dae 186 skip "-- $^O has serious fp indigestion on w-packed infinities"
187 if (($^O eq 'mpeix') || ($^O eq 'ultrix'));
8b571b32 188
0258719b 189 my $inf = eval '2**10000';
190
191 skip "Couldn't generate infinity - got error '$@'"
71b080b8 192 unless defined $inf and $inf == $inf / 2 and $inf + 1 == $inf;
0258719b 193
46ff39aa 194 local our $TODO;
195 $TODO = "VOS needs a fix for posix-1022 to pass this test."
196 if ($^O eq 'vos');
197
0258719b 198 eval { $x = pack 'w', $inf };
46ff39aa 199 like ($@, qr/^Cannot compress integer/, "Cannot compress integer");
0258719b 200 }
201
202 SKIP: {
71f93cb9 203
204 skip "-- the full range of an IEEE double may not be available in this configuration."
205 if (($^O eq 'VMS') && !defined($Config{useieee}));
206
ad415dae 207 skip "-- $^O does not like 2**1023"
208 if (($^O eq 'ultrix'));
209
0258719b 210 # This should be about the biggest thing possible on an IEEE double
211 my $big = eval '2**1023';
212
92b5f8d1 213 skip "Couldn't generate 2**1023 - got error '$@'", 3
0258719b 214 unless defined $big and $big != $big / 2;
215
216 eval { $x = pack 'w', $big };
217 is ($@, '', "Should be able to pack 'w', $big # 2**1023");
218
219 my $y = eval {unpack 'w', $x};
220 is ($@, '',
221 "Should be able to unpack 'w' the result of pack 'w', $big # 2**1023");
222
223 # I'm getting about 1e-16 on FreeBSD
224 my $quotient = int (100 * ($y - $big) / $big);
225 ok($quotient < 2 && $quotient > -2,
226 "Round trip pack, unpack 'w' of $big is withing 1% ($quotient%)");
227 }
228
fa8ec7c1 229}
def98dd4 230
40837afc 231print "# test the 'p' template\n";
84902520 232
233# literals
0b568b5f 234is(unpack("p",pack("p","foo")), "foo");
84902520 235
236# scalars
0b568b5f 237is(unpack("p",pack("p",239)), 239);
84902520 238
239# temps
240sub foo { my $a = "a"; return $a . $a++ . $a++ }
241{
9f1b1f2d 242 use warnings;
0b568b5f 243 my $warning;
84902520 244 local $SIG{__WARN__} = sub {
0b568b5f 245 $warning = $_[0];
84902520 246 };
247 my $junk = pack("p", &foo);
0b568b5f 248
249 like($warning, qr/temporary val/);
84902520 250}
251
252# undef should give null pointer
0b568b5f 253like(pack("p", undef), qr/^\0+/);
84902520 254
20408e3c 255# Check for optimizer bug (e.g. Digital Unix GEM cc with -O4 on DU V4.0B gives
256# 4294967295 instead of -1)
257# see #ifdef __osf__ in pp.c pp_unpack
0b568b5f 258is((unpack("i",pack("i",-1))), -1);
20408e3c 259
40837afc 260print "# test the pack lengths of s S i I l L n N v V\n";
261
fa8ec7c1 262my @lengths = qw(s 2 S 2 i -4 I -4 l 4 L 4 n 2 N 4 v 2 V 4);
263while (my ($format, $expect) = splice @lengths, 0, 2) {
264 my $len = length(pack($format, 0));
265 if ($expect > 0) {
0b568b5f 266 is($expect, $len, "format '$format'");
fa8ec7c1 267 } else {
268 $expect = -$expect;
0b568b5f 269 ok ($len >= $expect, "format '$format'") ||
270 print "# format '$format' has length $len, expected >= $expect\n";
fa8ec7c1 271 }
272}
d4217c7e 273
d4217c7e 274
40837afc 275print "# test unpack-pack lengths\n";
276
0b568b5f 277my @templates = qw(c C i I s S l L n N v V f d q Q);
d4217c7e 278
279foreach my $t (@templates) {
0b568b5f 280 SKIP: {
281 my @t = eval { unpack("$t*", pack("$t*", 12, 34)) };
282
283 # quads not supported everywhere
49704364 284 skip "Quads not supported", 4 if $@ =~ /Invalid type/;
0b568b5f 285 is( $@, '' );
286
287 is(scalar @t, 2);
3020ec7a 288
289 SKIP: {
290 skip "$t not expected to work for some reason", 2 if $t =~ /[nv]/i;
291
0b568b5f 292 is($t[0], 12);
293 is($t[1], 34);
294 }
0b568b5f 295 }
d4217c7e 296}
9d116dd7 297
fa8ec7c1 298{
0b568b5f 299 # uuencode/decode
9d116dd7 300
0b568b5f 301 # Note that first uuencoding known 'text' data and then checking the
302 # binary values of the uuencoded version would not be portable between
303 # character sets. Uuencoding is meant for encoding binary data, not
304 # text data.
c4d5f83a 305
0b568b5f 306 my $in = pack 'C*', 0 .. 255;
ba1ac976 307
0b568b5f 308 # just to be anal, we do some random tr/`/ /
309 my $uu = <<'EOUU';
ba1ac976 310M` $"`P0%!@<("0H+# T.#Q`1$A,4%187&!D:&QP='A\@(2(C)"4F)R@I*BLL
9d116dd7 311M+2XO,#$R,S0U-C<X.3H[/#T^/T!!0D-$149'2$E*2TQ-3D]045)35%565UA9
312M6EM<75Y?8&%B8V1E9F=H:6IK;&UN;W!Q<G-T=79W>'EZ>WQ]?G^`@8*#A(6&
313MAXB)BHN,C8Z/D)&2DY25EI>8F9J;G)V>GZ"AHJ.DI::GJ*FJJZRMKJ^PL;*S
314MM+6VM[BYNKN\O;Z_P,'"P\3%QL?(R<K+S,W.S]#1TM/4U=;7V-G:V]S=WM_@
ba1ac976 315?X>+CY.7FY^CIZNOL[>[O\/'R\_3U]O?X^?K[_/W^_P `
9d116dd7 316EOUU
317
0b568b5f 318 $_ = $uu;
319 tr/ /`/;
9d116dd7 320
0b568b5f 321 is(pack('u', $in), $_);
fa8ec7c1 322
0b568b5f 323 is(unpack('u', $uu), $in);
9d116dd7 324
0b568b5f 325 $in = "\x1f\x8b\x08\x08\x58\xdc\xc4\x35\x02\x03\x4a\x41\x50\x55\x00\xf3\x2a\x2d\x2e\x51\x48\xcc\xcb\x2f\xc9\x48\x2d\x52\x08\x48\x2d\xca\x51\x28\x2d\x4d\xce\x4f\x49\x2d\xe2\x02\x00\x64\x66\x60\x5c\x1a\x00\x00\x00";
326 $uu = <<'EOUU';
eddc390b 327M'XL("%C<Q#4"`TI!4%4`\RHM+E%(S,LOR4@M4@A(+<I1*"U-SD])+>("`&1F
328&8%P:````
329EOUU
330
0b568b5f 331 is(unpack('u', $uu), $in);
eddc390b 332
0b568b5f 333# This is identical to the above except that backquotes have been
334# changed to spaces
eddc390b 335
0b568b5f 336 $uu = <<'EOUU';
eddc390b 337M'XL("%C<Q#4" TI!4%4 \RHM+E%(S,LOR4@M4@A(+<I1*"U-SD])+>(" &1F
c4d5f83a 338&8%P:
eddc390b 339EOUU
340
0b568b5f 341 # ' # Grr
342 is(unpack('u', $uu), $in);
ef54e1a4 343
d99ad34e 344}
726ea183 345
0b568b5f 346# test the ascii template types (A, a, Z)
726ea183 347
fa8ec7c1 348foreach (
0b568b5f 349['p', 'A*', "foo\0bar\0 ", "foo\0bar\0 "],
fa8ec7c1 350['p', 'A11', "foo\0bar\0 ", "foo\0bar\0 "],
0b568b5f 351['u', 'A*', "foo\0bar \0", "foo\0bar"],
352['u', 'A8', "foo\0bar \0", "foo\0bar"],
353['p', 'a*', "foo\0bar\0 ", "foo\0bar\0 "],
fa8ec7c1 354['p', 'a11', "foo\0bar\0 ", "foo\0bar\0 \0\0"],
0b568b5f 355['u', 'a*', "foo\0bar \0", "foo\0bar \0"],
356['u', 'a8', "foo\0bar \0", "foo\0bar "],
357['p', 'Z*', "foo\0bar\0 ", "foo\0bar\0 \0"],
fa8ec7c1 358['p', 'Z11', "foo\0bar\0 ", "foo\0bar\0 \0\0"],
0b568b5f 359['p', 'Z3', "foo", "fo\0"],
360['u', 'Z*', "foo\0bar \0", "foo"],
361['u', 'Z8', "foo\0bar \0", "foo"],
362)
363{
364 my ($what, $template, $in, $out) = @$_;
365 my $got = $what eq 'u' ? (unpack $template, $in) : (pack $template, $in);
366 unless (is($got, $out)) {
0b568b5f 367 my $un = $what eq 'u' ? 'un' : '';
9e17a6b8 368 print "# ${un}pack ('$template', "._qq($in).') gave '._qq($out).
369 ' not '._qq($got)."\n";
0b568b5f 370 }
d99ad34e 371}
726ea183 372
40837afc 373print "# packing native shorts/ints/longs\n";
726ea183 374
0b568b5f 375is(length(pack("s!", 0)), $Config{shortsize});
376is(length(pack("i!", 0)), $Config{intsize});
377is(length(pack("l!", 0)), $Config{longsize});
378ok(length(pack("s!", 0)) <= length(pack("i!", 0)));
379ok(length(pack("i!", 0)) <= length(pack("l!", 0)));
380is(length(pack("i!", 0)), length(pack("i", 0)));
726ea183 381
fa8ec7c1 382sub numbers {
383 my $format = shift;
384 return numbers_with_total ($format, undef, @_);
d99ad34e 385}
726ea183 386
fa8ec7c1 387sub numbers_with_total {
388 my $format = shift;
389 my $total = shift;
390 if (!defined $total) {
391 foreach (@_) {
392 $total += $_;
393 }
394 }
40837afc 395 print "# numbers test for $format\n";
fa8ec7c1 396 foreach (@_) {
0b568b5f 397 SKIP: {
398 my $out = eval {unpack($format, pack($format, $_))};
399 skip "cannot pack '$format' on this perl", 2 if
49704364 400 $@ =~ /Invalid type '$format'/;
0b568b5f 401
402 is($@, '');
403 is($out, $_);
fa8ec7c1 404 }
fa8ec7c1 405 }
726ea183 406
fa8ec7c1 407 my $skip_if_longer_than = ~0; # "Infinity"
408 if (~0 - 1 == ~0) {
409 # If we're running with -DNO_PERLPRESERVE_IVUV and NVs don't preserve all
410 # UVs (in which case ~0 is NV, ~0-1 will be the same NV) then we can't
411 # correctly in perl calculate UV totals for long checksums, as pp_unpack
412 # is using UV maths, and we've only got NVs.
53133ed1 413 $skip_if_longer_than = $Config{nv_preserves_uv_bits};
fa8ec7c1 414 }
726ea183 415
fa8ec7c1 416 foreach ('', 1, 2, 3, 15, 16, 17, 31, 32, 33, 53, 54, 63, 64, 65) {
0b568b5f 417 SKIP: {
418 my $sum = eval {unpack "%$_$format*", pack "$format*", @_};
419 skip "cannot pack '$format' on this perl", 3
49704364 420 if $@ =~ /Invalid type '$format'/;
0b568b5f 421
422 is($@, '');
423 ok(defined $sum);
424
425 my $len = $_; # Copy, so that we can reassign ''
426 $len = 16 unless length $len;
427
428 SKIP: {
429 skip "cannot test checksums over $skip_if_longer_than bits", 1
430 if $len > $skip_if_longer_than;
431
432 # Our problem with testing this portably is that the checksum code in
433 # pp_unpack is able to cast signed to unsigned, and do modulo 2**n
434 # arithmetic in unsigned ints, which perl has no operators to do.
435 # (use integer; does signed ints, which won't wrap on UTS, which is just
436 # fine with ANSI, but not with most people's assumptions.
437 # This is why we need to supply the totals for 'Q' as there's no way in
438 # perl to calculate them, short of unpack '%0Q' (is that documented?)
439 # ** returns NVs; make sure it's IV.
440 my $max = 1 + 2 * (int (2 ** ($len-1))-1); # The max possible checksum
441 my $max_p1 = $max + 1;
442 my ($max_is_integer, $max_p1_is_integer);
443 $max_p1_is_integer = 1 unless $max_p1 + 1 == $max_p1;
444 $max_is_integer = 1 if $max - 1 < ~0;
445
446 my $calc_sum;
447 if (ref $total) {
448 $calc_sum = &$total($len);
449 } else {
450 $calc_sum = $total;
451 # Shift into range by some multiple of the total
53f3fd80 452 my $mult = $max_p1 ? int ($total / $max_p1) : undef;
0b568b5f 453 # Need this to make sure that -1 + (~0+1) is ~0 (ie still integer)
454 $calc_sum = $total - $mult;
455 $calc_sum -= $mult * $max;
456 if ($calc_sum < 0) {
457 $calc_sum += 1;
458 $calc_sum += $max;
459 }
460 }
461 if ($calc_sum == $calc_sum - 1 && $calc_sum == $max_p1) {
462 # we're into floating point (either by getting out of the range of
463 # UV arithmetic, or because we're doing a floating point checksum)
464 # and our calculation of the checksum has become rounded up to
465 # max_checksum + 1
466 $calc_sum = 0;
467 }
468
0dccb3d1 469 if ($calc_sum == $sum) { # HAS to be ==, not eq (so no is()).
470 ok ("unpack '%$_$format' gave $sum");
0b568b5f 471 } else {
472 my $delta = 1.000001;
473 if ($format =~ tr /dDfF//
474 && ($calc_sum <= $sum * $delta && $calc_sum >= $sum / $delta)) {
0dccb3d1 475 pass ("unpack '%$_$format' gave $sum, expected $calc_sum");
0b568b5f 476 } else {
477 my $text = ref $total ? &$total($len) : $total;
478 fail;
479 print "# For list (" . join (", ", @_) . ") (total $text)"
480 . " packed with $format unpack '%$_$format' gave $sum,"
481 . " expected $calc_sum\n";
482 }
483 }
fa8ec7c1 484 }
0b568b5f 485 }
2e821511 486 }
487}
488
fa8ec7c1 489numbers ('c', -128, -1, 0, 1, 127);
490numbers ('C', 0, 1, 127, 128, 255);
491numbers ('s', -32768, -1, 0, 1, 32767);
492numbers ('S', 0, 1, 32767, 32768, 65535);
493numbers ('i', -2147483648, -1, 0, 1, 2147483647);
494numbers ('I', 0, 1, 2147483647, 2147483648, 4294967295);
495numbers ('l', -2147483648, -1, 0, 1, 2147483647);
496numbers ('L', 0, 1, 2147483647, 2147483648, 4294967295);
497numbers ('s!', -32768, -1, 0, 1, 32767);
498numbers ('S!', 0, 1, 32767, 32768, 65535);
499numbers ('i!', -2147483648, -1, 0, 1, 2147483647);
500numbers ('I!', 0, 1, 2147483647, 2147483648, 4294967295);
501numbers ('l!', -2147483648, -1, 0, 1, 2147483647);
502numbers ('L!', 0, 1, 2147483647, 2147483648, 4294967295);
503numbers ('n', 0, 1, 32767, 32768, 65535);
504numbers ('v', 0, 1, 32767, 32768, 65535);
505numbers ('N', 0, 1, 2147483647, 2147483648, 4294967295);
506numbers ('V', 0, 1, 2147483647, 2147483648, 4294967295);
507# All these should have exact binary representations:
508numbers ('f', -1, 0, 0.5, 42, 2**34);
b85d93de 509numbers ('d', -(2**34), -1, 0, 1, 2**34);
510## These don't, but 'd' is NV. XXX wrong, it's double
511#numbers ('d', -1, 0, 1, 1-exp(-1), -exp(1));
fa8ec7c1 512
513numbers_with_total ('q', -1,
514 -9223372036854775808, -1, 0, 1,9223372036854775807);
800e6488 515# This total is icky, but the true total is 2**65-1, and need a way to generate
516# the epxected checksum on any system including those where NVs can preserve
517# 65 bits. (long double is 128 bits on sparc, so they certainly can)
518# or where rounding is down not up on binary conversion (crays)
519numbers_with_total ('Q', sub {
520 my $len = shift;
521 $len = 65 if $len > 65; # unmasked total is 2**65-1 here
522 my $total = 1 + 2 * (int (2**($len - 1)) - 1);
523 return 0 if $total == $total - 1; # Overflowed integers
524 return $total; # NVs still accurate to nearest integer
525 },
fa8ec7c1 526 0, 1,9223372036854775807, 9223372036854775808,
527 18446744073709551615);
528
40837afc 529print "# pack nvNV byteorders\n";
fa8ec7c1 530
0b568b5f 531is(pack("n", 0xdead), "\xde\xad");
532is(pack("v", 0xdead), "\xad\xde");
533is(pack("N", 0xdeadbeef), "\xde\xad\xbe\xef");
534is(pack("V", 0xdeadbeef), "\xef\xbe\xad\xde");
43192e07 535
fa8ec7c1 536{
537 # /
538
539 my ($x, $y, $z);
540 eval { ($x) = unpack '/a*','hello' };
49704364 541 like($@, qr!'/' must follow a numeric type!);
72b034c3 542 undef $x;
543 eval { $x = unpack '/a*','hello' };
49704364 544 like($@, qr!'/' must follow a numeric type!);
0b568b5f 545
72b034c3 546 undef $x;
fa8ec7c1 547 eval { ($z,$x,$y) = unpack 'a3/A C/a* C/Z', "003ok \003yes\004z\000abc" };
0b568b5f 548 is($@, '');
549 is($z, 'ok');
550 is($x, 'yes');
551 is($y, 'z');
72b034c3 552 undef $z;
553 eval { $z = unpack 'a3/A C/a* C/Z', "003ok \003yes\004z\000abc" };
554 is($@, '');
555 is($z, 'ok');
556
fa8ec7c1 557
72b034c3 558 undef $x;
fa8ec7c1 559 eval { ($x) = pack '/a*','hello' };
49704364 560 like($@, qr!Invalid type '/'!);
72b034c3 561 undef $x;
562 eval { $x = pack '/a*','hello' };
49704364 563 like($@, qr!Invalid type '/'!);
fa8ec7c1 564
565 $z = pack 'n/a* N/Z* w/A*','string','hi there ','etc';
566 my $expect = "\000\006string\0\0\0\012hi there \000\003etc";
0b568b5f 567 is($z, $expect);
4b5b2118 568
72b034c3 569 undef $x;
b85d93de 570 $expect = 'hello world';
571 eval { ($x) = unpack ("w/a", chr (11) . "hello world!")};
0b568b5f 572 is($x, $expect);
573 is($@, '');
574
72b034c3 575 undef $x;
b85d93de 576 # Doing this in scalar context used to fail.
577 eval { $x = unpack ("w/a", chr (11) . "hello world!")};
0b568b5f 578 is($@, '');
579 is($x, $expect);
b85d93de 580
fa8ec7c1 581 foreach (
0b568b5f 582 ['a/a*/a*', '212ab345678901234567','ab3456789012'],
583 ['a/a*/a*', '3012ab345678901234567', 'ab3456789012'],
584 ['a/a*/b*', '212ab', $Is_EBCDIC ? '100000010100' : '100001100100'],
585 )
586 {
fa8ec7c1 587 my ($pat, $in, $expect) = @$_;
72b034c3 588 undef $x;
fa8ec7c1 589 eval { ($x) = unpack $pat, $in };
0b568b5f 590 is($@, '');
591 is($x, $expect) ||
592 printf "# list unpack ('$pat', '$in') gave %s, expected '$expect'\n",
593 encode_list ($x);
594
72b034c3 595 undef $x;
b85d93de 596 eval { $x = unpack $pat, $in };
0b568b5f 597 is($@, '');
598 is($x, $expect) ||
599 printf "# scalar unpack ('$pat', '$in') gave %s, expected '$expect'\n",
600 encode_list ($x);
fa8ec7c1 601 }
4b5b2118 602
0b568b5f 603 # / with #
17f4a12d 604
72b034c3 605 my $pattern = <<'EOU';
17f4a12d 606 a3/A # Count in ASCII
607 C/a* # Count in a C char
608 C/Z # Count in a C char but skip after \0
609EOU
17f4a12d 610
72b034c3 611 $x = $y = $z =undef;
612 eval { ($z,$x,$y) = unpack $pattern, "003ok \003yes\004z\000abc" };
0b568b5f 613 is($@, '');
614 is($z, 'ok');
615 is($x, 'yes');
616 is($y, 'z');
72b034c3 617 undef $x;
618 eval { $z = unpack $pattern, "003ok \003yes\004z\000abc" };
619 is($@, '');
620 is($z, 'ok');
0b568b5f 621
72b034c3 622 $pattern = <<'EOP';
17f4a12d 623 n/a* # Count as network short
624 w/A* # Count a BER integer
625EOP
fa8ec7c1 626 $expect = "\000\006string\003etc";
72b034c3 627 $z = pack $pattern,'string','etc';
9e17a6b8 628 is($z, $expect);
fa8ec7c1 629}
630
60a99fa7 631
632SKIP: {
633 skip("(EBCDIC and) version strings are bad idea", 2) if $Is_EBCDIC;
634
635 is("1.20.300.4000", sprintf "%vd", pack("U*",1,20,300,4000));
636 is("1.20.300.4000", sprintf "%vd", pack(" U*",1,20,300,4000));
637}
0b568b5f 638isnt(v1.20.300.4000, sprintf "%vd", pack("C0U*",1,20,300,4000));
fa8ec7c1 639
0b568b5f 640my $rslt = $Is_EBCDIC ? "156 67" : "199 162";
641is(join(" ", unpack("C*", chr(0x1e2))), $rslt);
fa8ec7c1 642
643# does pack U create Unicode?
0b568b5f 644is(ord(pack('U', 300)), 300);
fa8ec7c1 645
646# does unpack U deref Unicode?
0b568b5f 647is((unpack('U', chr(300)))[0], 300);
fa8ec7c1 648
649# is unpack U the reverse of pack U for Unicode string?
0b568b5f 650is("@{[unpack('U*', pack('U*', 100, 200, 300))]}", "100 200 300");
fa8ec7c1 651
652# is unpack U the reverse of pack U for byte string?
0b568b5f 653is("@{[unpack('U*', pack('U*', 100, 200))]}", "100 200");
654
655
656SKIP: {
657 skip "Not for EBCDIC", 4 if $Is_EBCDIC;
fa8ec7c1 658
7eed2ccc 659 # does unpack C unravel pack U?
0b568b5f 660 is("@{[unpack('C*', pack('U*', 100, 200))]}", "100 195 136");
fa8ec7c1 661
7eed2ccc 662 # does pack U0C create Unicode?
0b568b5f 663 is("@{[pack('U0C*', 100, 195, 136)]}", v100.v200);
fa8ec7c1 664
7eed2ccc 665 # does pack C0U create characters?
0b568b5f 666 is("@{[pack('C0U*', 100, 200)]}", pack("C*", 100, 195, 136));
fa8ec7c1 667
2dcec3fe 668 # does unpack U0U on byte data warn?
669 {
670 local $SIG{__WARN__} = sub { $@ = "@_" };
671 my @null = unpack('U0U', chr(255));
0b568b5f 672 like($@, /^Malformed UTF-8 character /);
2dcec3fe 673 }
35bcd338 674}
675
fa8ec7c1 676{
677 my $p = pack 'i*', -2147483648, ~0, 0, 1, 2147483647;
678 my (@a);
679 # bug - % had to be at the start of the pattern, no leading whitespace or
680 # comments. %i! didn't work at all.
681 foreach my $pat ('%32i*', ' %32i*', "# Muhahahaha\n%32i*", '%32i* ',
682 '%32i!*', ' %32i!*', "\n#\n#\n\r \t\f%32i!*", '%32i!*#') {
683 @a = unpack $pat, $p;
0b568b5f 684 is($a[0], 0xFFFFFFFF) || print "# $pat\n";
fa8ec7c1 685 @a = scalar unpack $pat, $p;
0b568b5f 686 is($a[0], 0xFFFFFFFF) || print "# $pat\n";
fa8ec7c1 687 }
688
689
690 $p = pack 'I*', 42, 12;
691 # Multiline patterns in scalar context failed.
692 foreach my $pat ('I', <<EOPOEMSNIPPET, 'I#I', 'I # I', 'I # !!!') {
693# On the Ning Nang Nong
694# Where the Cows go Bong!
695# And the Monkeys all say Boo!
696I
697EOPOEMSNIPPET
0b568b5f 698 @a = unpack $pat, $p;
699 is(scalar @a, 1);
700 is($a[0], 42);
701 @a = scalar unpack $pat, $p;
702 is(scalar @a, 1);
703 is($a[0], 42);
704 }
fa8ec7c1 705
706 # shorts (of all flavours) didn't calculate checksums > 32 bits with floating
707 # point, so a pathologically long pattern would wrap at 32 bits.
708 my $pat = "\xff\xff"x65538; # Start with it long, to save any copying.
709 foreach (4,3,2,1,0) {
710 my $len = 65534 + $_;
0b568b5f 711 is(unpack ("%33n$len", $pat), 65535 * $len);
fa8ec7c1 712 }
713}
b85d93de 714
715
716# pack x X @
717foreach (
0b568b5f 718 ['x', "N", "\0"],
719 ['x4', "N", "\0"x4],
720 ['xX', "N", ""],
721 ['xXa*', "Nick", "Nick"],
722 ['a5Xa5', "cameL", "llama", "camellama"],
723 ['@4', 'N', "\0"x4],
724 ['a*@8a*', 'Camel', 'Dromedary', "Camel\0\0\0Dromedary"],
725 ['a*@4a', 'Perl rules', '!', 'Perl!'],
726)
727{
b85d93de 728 my ($template, @in) = @$_;
729 my $out = pop @in;
730 my $got = eval {pack $template, @in};
0b568b5f 731 is($@, '');
732 is($out, $got) ||
733 printf "# pack ('$template', %s) gave %s expected %s\n",
734 encode_list (@in), encode_list ($got), encode_list ($out);
b85d93de 735}
736
737# unpack x X @
738foreach (
0b568b5f 739 ['x', "N"],
740 ['xX', "N"],
741 ['xXa*', "Nick", "Nick"],
742 ['a5Xa5', "camellama", "camel", "llama"],
743 ['@3', "ice"],
744 ['@2a2', "water", "te"],
745 ['a*@1a3', "steam", "steam", "tea"],
746)
747{
b85d93de 748 my ($template, $in, @out) = @$_;
749 my @got = eval {unpack $template, $in};
0b568b5f 750 is($@, '');
c8f824eb 751 ok (list_eq (\@got, \@out)) ||
9e17a6b8 752 printf "# list unpack ('$template', %s) gave %s expected %s\n",
753 _qq($in), encode_list (@got), encode_list (@out);
b85d93de 754
755 my $got = eval {unpack $template, $in};
0b568b5f 756 is($@, '');
757 @out ? is( $got, $out[0] ) # 1 or more items; should get first
758 : ok( !defined $got ) # 0 items; should get undef
9e17a6b8 759 or printf "# scalar unpack ('$template', %s) gave %s expected %s\n",
760 _qq($in), encode_list ($got), encode_list ($out[0]);
b85d93de 761}
d50dd4e4 762
763{
d50dd4e4 764 my $t = 'Z*Z*';
765 my ($u, $v) = qw(foo xyzzy);
766 my $p = pack($t, $u, $v);
767 my @u = unpack($t, $p);
0b568b5f 768 is(scalar @u, 2);
769 is($u[0], $u);
770 is($u[1], $v);
d50dd4e4 771}
bf80f5a2 772
773{
0b568b5f 774 is((unpack("w/a*", "\x02abc"))[0], "ab");
bf80f5a2 775
0b568b5f 776 # "w/a*" should be seen as one unit
bf80f5a2 777
0b568b5f 778 is(scalar unpack("w/a*", "\x02abc"), "ab");
bf80f5a2 779}
b81060d6 780
781{
b81060d6 782 # from Wolfgang Laun: fix in change #13163
783
784 my $s = 'ABC' x 10;
644d52eb 785 my $t = '*';
786 my $x = ord($t);
b81060d6 787 my $buf = pack( 'Z*/A* C', $s, $x );
788 my $y;
789
790 my $h = $buf;
791 $h =~ s/[^[:print:]]/./g;
792 ( $s, $y ) = unpack( "Z*/A* C", $buf );
644d52eb 793 is($h, "30.ABCABCABCABCABCABCABCABCABCABC$t");
0b568b5f 794 is(length $buf, 34);
795 is($s, "ABCABCABCABCABCABCABCABCABCABC");
644d52eb 796 is($y, $x);
b81060d6 797}
3bf38418 798
799{
b223308b 800 # from Wolfgang Laun: fix in change #13288
3bf38418 801
b223308b 802 eval { my $t=unpack("P*", "abc") };
49704364 803 like($@, qr/'P' must have an explicit size/);
3bf38418 804}
18529408 805
806{ # Grouping constructs
807 my (@a, @b);
808 @a = unpack '(SL)', pack 'SLSLSL', 67..90;
809 is("@a", "67 68");
810 @a = unpack '(SL)3', pack 'SLSLSL', 67..90;
811 @b = (67..72);
812 is("@a", "@b");
813 @a = unpack '(SL)3', pack 'SLSLSLSL', 67..90;
814 is("@a", "@b");
815 @a = unpack '(SL)[3]', pack 'SLSLSLSL', 67..90;
816 is("@a", "@b");
817 @a = unpack '(SL)[2] SL', pack 'SLSLSLSL', 67..90;
818 is("@a", "@b");
819 @a = unpack 'A/(SL)', pack 'ASLSLSLSL', 3, 67..90;
820 is("@a", "@b");
821 @a = unpack 'A/(SL)SL', pack 'ASLSLSLSL', 2, 67..90;
822 is("@a", "@b");
823 @a = unpack '(SL)*', pack 'SLSLSLSL', 67..90;
824 @b = (67..74);
825 is("@a", "@b");
826 @a = unpack '(SL)*SL', pack 'SLSLSLSL', 67..90;
827 is("@a", "@b");
828 eval { @a = unpack '(*SL)', '' };
829 like($@, qr/\(\)-group starts with a count/);
830 eval { @a = unpack '(3SL)', '' };
831 like($@, qr/\(\)-group starts with a count/);
832 eval { @a = unpack '([3]SL)', '' };
833 like($@, qr/\(\)-group starts with a count/);
834 eval { @a = pack '(*SL)' };
835 like($@, qr/\(\)-group starts with a count/);
836 @a = unpack '(SL)3 SL', pack '(SL)4', 67..74;
837 is("@a", "@b");
838 @a = unpack '(SL)3 SL', pack '(SL)[4]', 67..74;
839 is("@a", "@b");
840 @a = unpack '(SL)3 SL', pack '(SL)*', 67..74;
841 is("@a", "@b");
842}
206947d2 843
49704364 844{ # more on grouping (W.Laun)
845 use warnings;
846 my $warning;
847 local $SIG{__WARN__} = sub {
848 $warning = $_[0];
849 };
850 # @ absolute within ()-group
851 my $badc = pack( '(a)*', unpack( '(@1a @0a @2)*', 'abcd' ) );
852 is( $badc, 'badc' );
853 my @b = ( 1, 2, 3 );
854 my $buf = pack( '(@1c)((@2C)@3c)', @b );
855 is( $buf, "\0\1\0\0\2\3" );
856 my @a = unpack( '(@1c)((@2c)@3c)', $buf );
857 is( "@a", "@b" );
858
859 # various unpack count/code scenarios
860 my @Env = ( a => 'AAA', b => 'BBB' );
861 my $env = pack( 'S(S/A*S/A*)*', @Env/2, @Env );
862
863 # unpack full length - ok
864 my @pup = unpack( 'S/(S/A* S/A*)', $env );
865 is( "@pup", "@Env" );
866
867 # warn when count/code goes beyond end of string
868 # \0002 \0001 a \0003 AAA \0001 b \0003 BBB
869 # 2 4 5 7 10 1213
870 eval { @pup = unpack( 'S/(S/A* S/A*)', substr( $env, 0, 13 ) ) };
871 like( $@, qr{length/code after end of string} );
872
873 # postfix repeat count
874 $env = pack( '(S/A* S/A*)' . @Env/2, @Env );
875
876 # warn when count/code goes beyond end of string
877 # \0001 a \0003 AAA \0001 b \0003 BBB
878 # 2 3c 5 8 10 11 13 16
879 eval { @pup = unpack( '(S/A* S/A*)' . @Env/2, substr( $env, 0, 11 ) ) };
880 like( $@, qr{length/code after end of string} );
881
882 # catch stack overflow/segfault
883 eval { $_ = pack( ('(' x 105) . 'A' . (')' x 105) ); };
884 like( $@, qr{Too deeply nested \(\)-groups} );
885}
886
887{ # syntax checks (W.Laun)
888 use warnings;
889 my @warning;
890 local $SIG{__WARN__} = sub {
891 push( @warning, $_[0] );
892 };
893 eval { my $s = pack( 'Ax![4c]A', 1..5 ); };
894 like( $@, qr{Malformed integer in \[\]} );
895
896 eval { my $buf = pack( '(c/*a*)', 'AAA', 'BB' ); };
897 like( $@, qr{'/' does not take a repeat count} );
898
899 eval { my @inf = unpack( 'c/1a', "\x03AAA\x02BB" ); };
900 like( $@, qr{'/' does not take a repeat count} );
901
902 eval { my @inf = unpack( 'c/*a', "\x03AAA\x02BB" ); };
903 like( $@, qr{'/' does not take a repeat count} );
904
905 # white space where possible
906 my @Env = ( a => 'AAA', b => 'BBB' );
907 my $env = pack( ' S ( S / A* S / A* )* ', @Env/2, @Env );
908 my @pup = unpack( ' S / ( S / A* S / A* ) ', $env );
909 is( "@pup", "@Env" );
910
911 # white space in 4 wrong places
912 for my $temp ( 'A ![4]', 'A [4]', 'A *', 'A 4' ){
913 eval { my $s = pack( $temp, 'B' ); };
914 like( $@, qr{Invalid type } );
915 }
916
917 # warning for commas
918 @warning = ();
919 my $x = pack( 'I,A', 4, 'X' );
920 like( $warning[0], qr{Invalid type ','} );
921
922 # comma warning only once
923 @warning = ();
924 $x = pack( 'C(C,C)C,C', 65..71 );
925 like( scalar @warning, 1 );
926
927 # forbidden code in []
928 eval { my $x = pack( 'A[@4]', 'XXXX' ); };
929 like( $@, qr{Within \[\]-length '\@' not allowed} );
930
931 # @ repeat default 1
932 my $s = pack( 'AA@A', 'A', 'B', 'C' );
933 my @c = unpack( 'AA@A', $s );
934 is( $s, 'AC' );
935 is( "@c", "A C C" );
936
937 # no unpack code after /
938 eval { my @a = unpack( "C/", "\3" ); };
939 like( $@, qr{Code missing after '/'} );
940
941}
942
206947d2 943{ # Repeat count [SUBEXPR]
92d41999 944 my @codes = qw( x A Z a c C B b H h s v n S i I l V N L p P f F d
945 s! S! i! I! l! L! j J);
946 my $G;
206947d2 947 if (eval { pack 'q', 1 } ) {
948 push @codes, qw(q Q);
949 } else {
950 push @codes, qw(c C); # Keep the count the same
951 }
92d41999 952 if (eval { pack 'D', 1 } ) {
953 push @codes, 'D';
954 } else {
955 push @codes, 'd'; # Keep the count the same
956 }
206947d2 957
958 my %val;
959 @val{@codes} = map { / [Xx] (?{ undef })
960 | [AZa] (?{ 'something' })
961 | C (?{ 214 })
962 | c (?{ 114 })
963 | [Bb] (?{ '101' })
964 | [Hh] (?{ 'b8' })
92d41999 965 | [svnSiIlVNLqQjJ] (?{ 10111 })
206947d2 966 | [FfDd] (?{ 1.36514538e67 })
967 | [pP] (?{ "try this buffer" })
968 /x; $^R } @codes;
969 my @end = (0x12345678, 0x23456781, 0x35465768, 0x15263748);
970 my $end = "N4";
971
972 for my $type (@codes) {
973 my @list = $val{$type};
974 @list = () unless defined $list[0];
975 for my $count ('', '3', '[11]') {
976 my $c = 1;
977 $c = $1 if $count =~ /(\d+)/;
978 my @list1 = @list;
979 @list1 = (@list1) x $c unless $type =~ /[XxAaZBbHhP]/;
980 for my $groupend ('', ')2', ')[8]') {
981 my $groupbegin = ($groupend ? '(' : '');
982 $c = 1;
983 $c = $1 if $groupend =~ /(\d+)/;
984 my @list2 = (@list1) x $c;
985
986 my $junk1 = "$groupbegin $type$count $groupend";
987 # print "# junk1=$junk1\n";
988 my $p = pack $junk1, @list2;
989 my $half = int( (length $p)/2 );
62f95557 990 for my $move ('', "X$half", "X!$half", 'x1', 'x!8', "x$half") {
206947d2 991 my $junk = "$junk1 $move";
62f95557 992 # print "# junk='$junk', list=(@list2)\n";
206947d2 993 $p = pack "$junk $end", @list2, @end;
994 my @l = unpack "x[$junk] $end", $p;
995 is(scalar @l, scalar @end);
996 is("@l", "@end", "skipping x[$junk]");
997 }
998 }
999 }
1000 }
1001}
1002
1003# / is recognized after spaces in scalar context
1004# XXXX no spaces are allowed in pack... In pack only before the slash...
1005is(scalar unpack('A /A Z20', pack 'A/A* Z20', 'bcde', 'xxxxx'), 'bcde');
1006is(scalar unpack('A /A /A Z20', '3004bcde'), 'bcde');
62f95557 1007
1008{ # X! and x!
1009 my $t = 'C[3] x!8 C[2]';
1010 my @a = (0x73..0x77);
1011 my $p = pack($t, @a);
1012 is($p, "\x73\x74\x75\0\0\0\0\0\x76\x77");
1013 my @b = unpack $t, $p;
1014 is(scalar @b, scalar @a);
1015 is("@b", "@a", 'x!8');
1016 $t = 'x[5] C[6] X!8 C[2]';
1017 @a = (0x73..0x7a);
1018 $p = pack($t, @a);
1019 is($p, "\0\0\0\0\0\x73\x74\x75\x79\x7a");
1020 @b = unpack $t, $p;
1021 @a = (0x73..0x75, 0x79, 0x7a, 0x79, 0x7a);
1022 is(scalar @b, scalar @a);
1023 is("@b", "@a");
1024}
1025
1026{ # struct {char c1; double d; char cc[2];}
1027 my $t = 'C x![d] d C[2]';
1028 my @a = (173, 1.283476517e-45, 42, 215);
1029 my $p = pack $t, @a;
1030 ok( length $p);
1031 my @b = unpack "$t X[$t] $t", $p; # Extract, step back, extract again
1032 is(scalar @b, 2 * scalar @a);
3f7e3417 1033 $b = "@b";
1034 $b =~ s/(?:17000+|16999+)\d+(e-45) /17$1 /gi; # stringification is gamble
1035 is($b, "@a @a");
62f95557 1036
1037 my $warning;
1038 local $SIG{__WARN__} = sub {
1039 $warning = $_[0];
1040 };
1041 @b = unpack "x[C] x[$t] X[$t] X[C] $t", "$p\0";
1042
1043 is($warning, undef);
1044 is(scalar @b, scalar @a);
3f7e3417 1045 $b = "@b";
1046 $b =~ s/(?:17000+|16999+)\d+(e-45) /17$1 /gi; # stringification is gamble
1047 is($b, "@a");
62f95557 1048}
92d41999 1049
1050is(length(pack("j", 0)), $Config{ivsize});
1051is(length(pack("J", 0)), $Config{uvsize});
1052is(length(pack("F", 0)), $Config{nvsize});
1053
1054numbers ('j', -2147483648, -1, 0, 1, 2147483647);
1055numbers ('J', 0, 1, 2147483647, 2147483648, 4294967295);
1056numbers ('F', -(2**34), -1, 0, 1, 2**34);
1057SKIP: {
1058 my $t = eval { unpack("D*", pack("D", 12.34)) };
1059
49704364 1060 skip "Long doubles not in use", 56 if $@ =~ /Invalid type/;
92d41999 1061
1062 is(length(pack("D", 0)), $Config{longdblsize});
1063 numbers ('D', -(2**34), -1, 0, 1, 2**34);
1064}
1065
c8f824eb 1066# Maybe this knowledge needs to be "global" for all of pack.t
1067# Or a "can checksum" which would effectively be all the number types"
1068my %cant_checksum = map {$_=> 1} qw(A Z u w);
1069# not a b B h H
1070foreach my $template (qw(A Z c C s S i I l L n N v V q Q j J f d F D u U w)) {
1071 SKIP: {
1072 my $packed = eval {pack "${template}4", 1, 4, 9, 16};
1073 if ($@) {
49704364 1074 die unless $@ =~ /Invalid type '$template'/;
c8f824eb 1075 skip ("$template not supported on this perl",
1076 $cant_checksum{$template} ? 4 : 8);
1077 }
1078 my @unpack4 = unpack "${template}4", $packed;
1079 my @unpack = unpack "${template}*", $packed;
1080 my @unpack1 = unpack "${template}", $packed;
1081 my @unpack1s = scalar unpack "${template}", $packed;
1082 my @unpack4s = scalar unpack "${template}4", $packed;
1083 my @unpacks = scalar unpack "${template}*", $packed;
1084
1085 my @tests = ( ["${template}4 vs ${template}*", \@unpack4, \@unpack],
1086 ["scalar ${template} ${template}", \@unpack1s, \@unpack1],
1087 ["scalar ${template}4 vs ${template}", \@unpack4s, \@unpack1],
1088 ["scalar ${template}* vs ${template}", \@unpacks, \@unpack1],
1089 );
1090
1091 unless ($cant_checksum{$template}) {
1092 my @unpack4_c = unpack "\%${template}4", $packed;
1093 my @unpack_c = unpack "\%${template}*", $packed;
1094 my @unpack1_c = unpack "\%${template}", $packed;
1095 my @unpack1s_c = scalar unpack "\%${template}", $packed;
1096 my @unpack4s_c = scalar unpack "\%${template}4", $packed;
1097 my @unpacks_c = scalar unpack "\%${template}*", $packed;
1098
1099 push @tests,
1100 ( ["% ${template}4 vs ${template}*", \@unpack4_c, \@unpack_c],
1101 ["% scalar ${template} ${template}", \@unpack1s_c, \@unpack1_c],
1102 ["% scalar ${template}4 vs ${template}*", \@unpack4s_c, \@unpack_c],
1103 ["% scalar ${template}* vs ${template}*", \@unpacks_c, \@unpack_c],
1104 );
1105 }
1106 foreach my $test (@tests) {
1107 ok (list_eq ($test->[1], $test->[2]), $test->[0]) ||
1108 printf "# unpack gave %s expected %s\n",
1109 encode_list (@{$test->[1]}), encode_list (@{$test->[2]});
1110 }
1111 }
1112}
9c3dc587 1113
1114ok(pack('u2', 'AA'), "[perl #8026]"); # used to hang and eat RAM in perl 5.7.2
1115
fe581ec7 1116$_ = pack('c', 65); # 'A' would not be EBCDIC-friendly
1117is(unpack('c'), 65, "one-arg unpack (change #18751)"); # defaulting to $_
db37a92e 1118
1119{
1120 my $a = "X\t01234567\n" x 100;
1121 my @a = unpack("(a1 c/a)*", $a);
1122 is(scalar @a, 200, "[perl #15288]");
1123 is($a[-1], "01234567\n", "[perl #15288]");
1124 is($a[-2], "X", "[perl #15288]");
1125}
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