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