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make t/op/pack.t not explode when u64size=''
[perl5.git] / t / op / pack.t
CommitLineData
d50dd4e4 1#!./perl -w
a687059c 2
a1a0e61e
TD
3BEGIN {
4 chdir 't' if -d 't';
20822f61 5 @INC = '../lib';
0b568b5f 6 require './test.pl';
b23b8711
MS
7}
8
d9db00a6
NC
9# This is truth in an if statement, and could be a skip message
10my $no_endianness = $] > 5.009 ? '' :
11 "Endianness pack modifiers not available on this perl";
12my $no_signedness = $] > 5.009 ? '' :
13 "Signed/unsigned pack modifiers not available on this perl";
14
1651fc44 15plan tests => 14696;
0b568b5f 16
fa8ec7c1 17use strict;
bd7d4f4d 18use warnings qw(FATAL all);
b23b8711
MS
19use Config;
20
fa8ec7c1 21my $Is_EBCDIC = (defined $Config{ebcdic} && $Config{ebcdic} eq 'define');
0b568b5f 22my $Perl = which_perl();
1109a392
MHM
23my @valid_errors = (qr/^Invalid type '\w'/);
24
25my $ByteOrder = 'unknown';
26my $maybe_not_avail = '(?:hto[bl]e|[bl]etoh)';
d9db00a6
NC
27if ($no_endianness) {
28 push @valid_errors, qr/^Invalid type '[<>]'/;
29} elsif ($Config{byteorder} =~ /^1234(?:5678)?$/) {
1109a392
MHM
30 $ByteOrder = 'little';
31 $maybe_not_avail = '(?:htobe|betoh)';
32}
33elsif ($Config{byteorder} =~ /^(?:8765)?4321$/) {
34 $ByteOrder = 'big';
35 $maybe_not_avail = '(?:htole|letoh)';
36}
37else {
38 push @valid_errors, qr/^Can't (?:un)?pack (?:big|little)-endian .*? on this platform/;
39}
40
d9db00a6
NC
41if ($no_signedness) {
42 push @valid_errors, qr/^'!' allowed only after types sSiIlLxX in (?:un)?pack/;
43}
44
1109a392 45for my $size ( 16, 32, 64 ) {
49fe901c 46 if (defined $Config{"u${size}size"} and ($Config{"u${size}size"}||0) != ($size >> 3)) {
1109a392
MHM
47 push @valid_errors, qr/^Perl_my_$maybe_not_avail$size\(\) not available/;
48 }
49}
50
51my $IsTwosComplement = pack('i', -1) eq "\xFF" x $Config{intsize};
52print "# \$IsTwosComplement = $IsTwosComplement\n";
53
54sub is_valid_error
55{
56 my $err = shift;
57
58 for my $e (@valid_errors) {
59 $err =~ $e and return 1;
60 }
61
62 return 0;
63}
c274e827 64
b85d93de 65sub encode_list {
9e17a6b8 66 my @result = map {_qq($_)} @_;
b85d93de
NC
67 if (@result == 1) {
68 return @result;
69 }
70 return '(' . join (', ', @result) . ')';
71}
72
a1a0e61e 73
b85d93de
NC
74sub list_eq ($$) {
75 my ($l, $r) = @_;
c8f824eb 76 return 0 unless @$l == @$r;
b85d93de
NC
77 for my $i (0..$#$l) {
78 if (defined $l->[$i]) {
c8f824eb 79 return 0 unless defined ($r->[$i]) && $l->[$i] eq $r->[$i];
b85d93de 80 } else {
c8f824eb 81 return 0 if defined $r->[$i]
b85d93de
NC
82 }
83 }
84 return 1;
85}
86
87##############################################################################
88#
89# Here starteth the tests
90#
91
fa8ec7c1 92{
0b568b5f
MS
93 my $format = "c2 x5 C C x s d i l a6";
94 # Need the expression in here to force ary[5] to be numeric. This avoids
95 # test2 failing because ary2 goes str->numeric->str and ary doesn't.
96 my @ary = (1,-100,127,128,32767,987.654321098 / 100.0,12345,123456,
97 "abcdef");
98 my $foo = pack($format,@ary);
99 my @ary2 = unpack($format,$foo);
100
101 is($#ary, $#ary2);
102
103 my $out1=join(':',@ary);
104 my $out2=join(':',@ary2);
105 # Using long double NVs may introduce greater accuracy than wanted.
106 $out1 =~ s/:9\.87654321097999\d*:/:9.87654321098:/;
107 $out2 =~ s/:9\.87654321097999\d*:/:9.87654321098:/;
108 is($out1, $out2);
109
110 like($foo, qr/def/);
fa8ec7c1 111}
79072805
LW
112# How about counting bits?
113
fa8ec7c1 114{
0b568b5f
MS
115 my $x;
116 is( ($x = unpack("%32B*", "\001\002\004\010\020\040\100\200\377")), 16 );
79072805 117
0b568b5f 118 is( ($x = unpack("%32b69", "\001\002\004\010\020\040\100\200\017")), 12 );
79072805 119
0b568b5f 120 is( ($x = unpack("%32B69", "\001\002\004\010\020\040\100\200\017")), 9 );
fa8ec7c1 121}
79072805 122
fa8ec7c1 123{
0b568b5f
MS
124 my $sum = 129; # ASCII
125 $sum = 103 if $Is_EBCDIC;
9d116dd7 126
0b568b5f
MS
127 my $x;
128 is( ($x = unpack("%32B*", "Now is the time for all good blurfl")), $sum );
79072805 129
0b568b5f
MS
130 my $foo;
131 open(BIN, $Perl) || die "Can't open $Perl: $!\n";
bd7d4f4d 132 binmode BIN;
0b568b5f
MS
133 sysread BIN, $foo, 8192;
134 close BIN;
79072805 135
0b568b5f
MS
136 $sum = unpack("%32b*", $foo);
137 my $longway = unpack("b*", $foo);
138 is( $sum, $longway =~ tr/1/1/ );
fa8ec7c1 139}
73a1c01a 140
fa8ec7c1
NC
141{
142 my $x;
0b568b5f 143 is( ($x = unpack("I",pack("I", 0xFFFFFFFF))), 0xFFFFFFFF );
fa8ec7c1 144}
def98dd4 145
fa8ec7c1 146{
0b568b5f
MS
147 # check 'w'
148 my @x = (5,130,256,560,32000,3097152,268435455,1073741844, 2**33,
149 '4503599627365785','23728385234614992549757750638446');
150 my $x = pack('w*', @x);
151 my $y = pack 'H*', '0581028200843081fa0081bd8440ffffff7f8480808014A0808'.
152 '0800087ffffffffffdb19caefe8e1eeeea0c2e1e3e8ede1ee6e';
153
154 is($x, $y);
155
156 my @y = unpack('w*', $y);
157 my $a;
158 while ($a = pop @x) {
159 my $b = pop @y;
160 is($a, $b);
161 }
def98dd4 162
0b568b5f 163 @y = unpack('w2', $x);
def98dd4 164
0b568b5f
MS
165 is(scalar(@y), 2);
166 is($y[1], 130);
a6c48a57
UP
167 $x = pack('w*', 5000000000); $y = '';
168 eval {
169 use Math::BigInt;
170 $y = pack('w*', Math::BigInt::->new(5000000000));
171 };
172 is($x, $y);
196b62db
NC
173
174 $x = pack 'w', ~0;
175 $y = pack 'w', (~0).'';
176 is($x, $y);
177 is(unpack ('w',$x), ~0);
178 is(unpack ('w',$y), ~0);
179
180 $x = pack 'w', ~0 - 1;
181 $y = pack 'w', (~0) - 2;
182
183 if (~0 - 1 == (~0) - 2) {
184 is($x, $y, "NV arithmetic");
185 } else {
186 isnt($x, $y, "IV/NV arithmetic");
187 }
188 cmp_ok(unpack ('w',$x), '==', ~0 - 1);
189 cmp_ok(unpack ('w',$y), '==', ~0 - 2);
203d3f29
NC
190
191 # These should spot that pack 'w' is using NV, not double, on platforms
192 # where IVs are smaller than doubles, and harmlessly pass elsewhere.
193 # (tests for change 16861)
194 my $x0 = 2**54+3;
195 my $y0 = 2**54-2;
196
197 $x = pack 'w', $x0;
198 $y = pack 'w', $y0;
199
200 if ($x0 == $y0) {
201 is($x, $y, "NV arithmetic");
202 } else {
203 isnt($x, $y, "IV/NV arithmetic");
204 }
205 cmp_ok(unpack ('w',$x), '==', $x0);
206 cmp_ok(unpack ('w',$y), '==', $y0);
fa8ec7c1 207}
def98dd4 208
0b568b5f 209
fa8ec7c1 210{
40837afc 211 print "# test exceptions\n";
fa8ec7c1
NC
212 my $x;
213 eval { $x = unpack 'w', pack 'C*', 0xff, 0xff};
0b568b5f 214 like($@, qr/^Unterminated compressed integer/);
def98dd4 215
fa8ec7c1 216 eval { $x = unpack 'w', pack 'C*', 0xff, 0xff, 0xff, 0xff};
0b568b5f 217 like($@, qr/^Unterminated compressed integer/);
def98dd4 218
fa8ec7c1 219 eval { $x = unpack 'w', pack 'C*', 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
0b568b5f 220 like($@, qr/^Unterminated compressed integer/);
0258719b
NC
221
222 eval { $x = pack 'w', -1 };
223 like ($@, qr/^Cannot compress negative numbers/);
224
225 eval { $x = pack 'w', '1'x(1 + length ~0) . 'e0' };
226 like ($@, qr/^Can only compress unsigned integers/);
227
9391b049
NC
228 # Check that the warning behaviour on the modifiers !, < and > is as we
229 # expect it for this perl.
230 my $can_endian = $no_endianness ? '' : 'sSiIlLqQjJfFdDpP';
231 my $can_shriek = 'sSiIlL';
efb78d13 232 $can_shriek .= 'nNvV' unless $no_signedness;
9391b049 233 # h and H can't do either, so act as sanity checks in blead
efb78d13 234 foreach my $base (split '', 'hHsSiIlLqQjJfFdDpPnNvV') {
9391b049
NC
235 foreach my $mod ('', '<', '>', '!', '<!', '>!', '!<', '!>') {
236 SKIP: {
237 # Avoid void context warnings.
238 my $a = eval {pack "$base$mod"};
239 skip "pack can't $base", 1 if $@ =~ /^Invalid type '\w'/;
240 # Which error you get when 2 would be possible seems to be emergent
241 # behaviour of pack's format parser.
242
243 my $fails_shriek = $mod =~ /!/ && index ($can_shriek, $base) == -1;
244 my $fails_endian = $mod =~ /[<>]/ && index ($can_endian, $base) == -1;
245 my $shriek_first = $mod =~ /^!/;
246
247 if ($no_endianness and ($mod eq '<!' or $mod eq '>!')) {
248 # The ! isn't seem as part of $base. Instead it's seen as a modifier
249 # on > or <
250 $fails_shriek = 1;
251 undef $fails_endian;
252 } elsif ($fails_shriek and $fails_endian) {
253 if ($shriek_first) {
254 undef $fails_endian;
255 }
256 }
257
258 if ($fails_endian) {
259 if ($no_endianness) {
260 # < and > are seen as pattern letters, not modifiers
261 like ($@, qr/^Invalid type '[<>]'/, "pack can't $base$mod");
262 } else {
263 like ($@, qr/^'[<>]' allowed only after types/,
264 "pack can't $base$mod");
265 }
266 } elsif ($fails_shriek) {
267 like ($@, qr/^'!' allowed only after types/,
268 "pack can't $base$mod");
269 } else {
270 is ($@, '', "pack can $base$mod");
271 }
272 }
273 }
274 }
275
d9db00a6
NC
276 SKIP: {
277 skip $no_endianness, 2*3 + 2*8 if $no_endianness;
278 for my $mod (qw( ! < > )) {
279 eval { $x = pack "a$mod", 42 };
280 like ($@, qr/^'$mod' allowed only after types \S+ in pack/);
1109a392 281
d9db00a6
NC
282 eval { $x = unpack "a$mod", 'x'x8 };
283 like ($@, qr/^'$mod' allowed only after types \S+ in unpack/);
284 }
1109a392 285
d9db00a6
NC
286 for my $mod (qw( <> >< !<> !>< <!> >!< <>! ><! )) {
287 eval { $x = pack "sI${mod}s", 42, 47, 11 };
288 like ($@, qr/^Can't use both '<' and '>' after type 'I' in pack/);
1109a392 289
d9db00a6
NC
290 eval { $x = unpack "sI${mod}s", 'x'x16 };
291 like ($@, qr/^Can't use both '<' and '>' after type 'I' in unpack/);
292 }
1109a392
MHM
293 }
294
0258719b
NC
295 SKIP: {
296 # Is this a stupid thing to do on VMS, VOS and other unusual platforms?
71f93cb9 297
b987f19e 298 skip("-- the IEEE infinity model is unavailable in this configuration.", 1)
71f93cb9
CB
299 if (($^O eq 'VMS') && !defined($Config{useieee}));
300
b987f19e 301 skip("-- $^O has serious fp indigestion on w-packed infinities", 1)
5688dfbf
JH
302 if (
303 ($^O eq 'mpeix')
304 ||
305 ($^O eq 'ultrix')
306 ||
cd512f8e 307 ($^O =~ /^svr4/ && -f "/etc/issue" && -f "/etc/.relid") # NCR MP-RAS
5688dfbf 308 );
8b571b32 309
1109a392 310 my $inf = eval '2**1000000';
0258719b 311
b987f19e 312 skip("Couldn't generate infinity - got error '$@'", 1)
71b080b8 313 unless defined $inf and $inf == $inf / 2 and $inf + 1 == $inf;
0258719b 314
46ff39aa
PG
315 local our $TODO;
316 $TODO = "VOS needs a fix for posix-1022 to pass this test."
317 if ($^O eq 'vos');
318
0258719b 319 eval { $x = pack 'w', $inf };
46ff39aa 320 like ($@, qr/^Cannot compress integer/, "Cannot compress integer");
0258719b
NC
321 }
322
323 SKIP: {
71f93cb9 324
b987f19e 325 skip("-- the full range of an IEEE double may not be available in this configuration.", 3)
71f93cb9
CB
326 if (($^O eq 'VMS') && !defined($Config{useieee}));
327
b987f19e 328 skip("-- $^O does not like 2**1023", 3)
ad415dae
JH
329 if (($^O eq 'ultrix'));
330
0258719b
NC
331 # This should be about the biggest thing possible on an IEEE double
332 my $big = eval '2**1023';
333
b987f19e 334 skip("Couldn't generate 2**1023 - got error '$@'", 3)
0258719b
NC
335 unless defined $big and $big != $big / 2;
336
337 eval { $x = pack 'w', $big };
338 is ($@, '', "Should be able to pack 'w', $big # 2**1023");
339
340 my $y = eval {unpack 'w', $x};
341 is ($@, '',
342 "Should be able to unpack 'w' the result of pack 'w', $big # 2**1023");
343
344 # I'm getting about 1e-16 on FreeBSD
345 my $quotient = int (100 * ($y - $big) / $big);
346 ok($quotient < 2 && $quotient > -2,
1109a392 347 "Round trip pack, unpack 'w' of $big is within 1% ($quotient%)");
0258719b
NC
348 }
349
fa8ec7c1 350}
def98dd4 351
40837afc 352print "# test the 'p' template\n";
84902520
TB
353
354# literals
0b568b5f 355is(unpack("p",pack("p","foo")), "foo");
d9db00a6
NC
356SKIP: {
357 skip $no_endianness, 2 if $no_endianness;
358 is(unpack("p<",pack("p<","foo")), "foo");
359 is(unpack("p>",pack("p>","foo")), "foo");
360}
84902520 361# scalars
0b568b5f 362is(unpack("p",pack("p",239)), 239);
d9db00a6
NC
363SKIP: {
364 skip $no_endianness, 2 if $no_endianness;
365 is(unpack("p<",pack("p<",239)), 239);
366 is(unpack("p>",pack("p>",239)), 239);
367}
84902520
TB
368
369# temps
370sub foo { my $a = "a"; return $a . $a++ . $a++ }
371{
bd7d4f4d 372 use warnings qw(NONFATAL all);;
0b568b5f 373 my $warning;
84902520 374 local $SIG{__WARN__} = sub {
0b568b5f 375 $warning = $_[0];
84902520
TB
376 };
377 my $junk = pack("p", &foo);
0b568b5f
MS
378
379 like($warning, qr/temporary val/);
84902520
TB
380}
381
382# undef should give null pointer
1109a392 383like(pack("p", undef), qr/^\0+$/);
d9db00a6
NC
384SKIP: {
385 skip $no_endianness, 2 if $no_endianness;
386 like(pack("p<", undef), qr/^\0+$/);
387 like(pack("p>", undef), qr/^\0+$/);
388}
84902520 389
20408e3c
GS
390# Check for optimizer bug (e.g. Digital Unix GEM cc with -O4 on DU V4.0B gives
391# 4294967295 instead of -1)
392# see #ifdef __osf__ in pp.c pp_unpack
0b568b5f 393is((unpack("i",pack("i",-1))), -1);
20408e3c 394
1109a392
MHM
395print "# test the pack lengths of s S i I l L n N v V + modifiers\n";
396
397my @lengths = (
398 qw(s 2 S 2 i -4 I -4 l 4 L 4 n 2 N 4 v 2 V 4 n! 2 N! 4 v! 2 V! 4),
399 's!' => $Config{shortsize}, 'S!' => $Config{shortsize},
400 'i!' => $Config{intsize}, 'I!' => $Config{intsize},
401 'l!' => $Config{longsize}, 'L!' => $Config{longsize},
402);
403
404while (my ($base, $expect) = splice @lengths, 0, 2) {
405 my @formats = ($base);
406 $base =~ /^[nv]/i or push @formats, "$base>", "$base<";
407 for my $format (@formats) {
d9db00a6
NC
408 SKIP: {
409 skip $no_endianness, 1 if $no_endianness && $format =~ m/[<>]/;
410 skip $no_signedness, 1 if $no_signedness && $format =~ /[nNvV]!/;
411 my $len = length(pack($format, 0));
412 if ($expect > 0) {
413 is($expect, $len, "format '$format'");
414 } else {
415 $expect = -$expect;
416 ok ($len >= $expect, "format '$format'") ||
417 print "# format '$format' has length $len, expected >= $expect\n";
418 }
1109a392 419 }
fa8ec7c1
NC
420 }
421}
d4217c7e 422
d4217c7e 423
40837afc
NC
424print "# test unpack-pack lengths\n";
425
f337b084 426my @templates = qw(c C W i I s S l L n N v V f d q Q);
d4217c7e 427
1109a392
MHM
428foreach my $base (@templates) {
429 my @tmpl = ($base);
f337b084 430 $base =~ /^[cwnv]/i or push @tmpl, "$base>", "$base<";
1109a392
MHM
431 foreach my $t (@tmpl) {
432 SKIP: {
433 my @t = eval { unpack("$t*", pack("$t*", 12, 34)) };
0b568b5f 434
1109a392
MHM
435 skip "cannot pack '$t' on this perl", 4
436 if is_valid_error($@);
3020ec7a 437
86704b5f 438 is( $@, '', "Template $t works");
1109a392 439 is(scalar @t, 2);
3020ec7a 440
0b568b5f
MS
441 is($t[0], 12);
442 is($t[1], 34);
443 }
0b568b5f 444 }
d4217c7e 445}
9d116dd7 446
fa8ec7c1 447{
0b568b5f 448 # uuencode/decode
9d116dd7 449
0b568b5f
MS
450 # Note that first uuencoding known 'text' data and then checking the
451 # binary values of the uuencoded version would not be portable between
452 # character sets. Uuencoding is meant for encoding binary data, not
453 # text data.
c4d5f83a 454
0b568b5f 455 my $in = pack 'C*', 0 .. 255;
ba1ac976 456
0b568b5f
MS
457 # just to be anal, we do some random tr/`/ /
458 my $uu = <<'EOUU';
ba1ac976 459M` $"`P0%!@<("0H+# T.#Q`1$A,4%187&!D:&QP='A\@(2(C)"4F)R@I*BLL
9d116dd7
JH
460M+2XO,#$R,S0U-C<X.3H[/#T^/T!!0D-$149'2$E*2TQ-3D]045)35%565UA9
461M6EM<75Y?8&%B8V1E9F=H:6IK;&UN;W!Q<G-T=79W>'EZ>WQ]?G^`@8*#A(6&
462MAXB)BHN,C8Z/D)&2DY25EI>8F9J;G)V>GZ"AHJ.DI::GJ*FJJZRMKJ^PL;*S
463MM+6VM[BYNKN\O;Z_P,'"P\3%QL?(R<K+S,W.S]#1TM/4U=;7V-G:V]S=WM_@
ba1ac976 464?X>+CY.7FY^CIZNOL[>[O\/'R\_3U]O?X^?K[_/W^_P `
9d116dd7
JH
465EOUU
466
0b568b5f
MS
467 $_ = $uu;
468 tr/ /`/;
9d116dd7 469
0b568b5f 470 is(pack('u', $in), $_);
fa8ec7c1 471
0b568b5f 472 is(unpack('u', $uu), $in);
9d116dd7 473
0b568b5f
MS
474 $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";
475 $uu = <<'EOUU';
eddc390b
JH
476M'XL("%C<Q#4"`TI!4%4`\RHM+E%(S,LOR4@M4@A(+<I1*"U-SD])+>("`&1F
477&8%P:````
478EOUU
479
0b568b5f 480 is(unpack('u', $uu), $in);
eddc390b 481
0b568b5f
MS
482# This is identical to the above except that backquotes have been
483# changed to spaces
eddc390b 484
0b568b5f 485 $uu = <<'EOUU';
eddc390b 486M'XL("%C<Q#4" TI!4%4 \RHM+E%(S,LOR4@M4@A(+<I1*"U-SD])+>(" &1F
c4d5f83a 487&8%P:
eddc390b
JH
488EOUU
489
0b568b5f
MS
490 # ' # Grr
491 is(unpack('u', $uu), $in);
ef54e1a4 492
d99ad34e 493}
726ea183 494
0b568b5f 495# test the ascii template types (A, a, Z)
726ea183 496
fa8ec7c1 497foreach (
0b568b5f 498['p', 'A*', "foo\0bar\0 ", "foo\0bar\0 "],
fa8ec7c1 499['p', 'A11', "foo\0bar\0 ", "foo\0bar\0 "],
0b568b5f
MS
500['u', 'A*', "foo\0bar \0", "foo\0bar"],
501['u', 'A8', "foo\0bar \0", "foo\0bar"],
502['p', 'a*', "foo\0bar\0 ", "foo\0bar\0 "],
fa8ec7c1 503['p', 'a11', "foo\0bar\0 ", "foo\0bar\0 \0\0"],
0b568b5f
MS
504['u', 'a*', "foo\0bar \0", "foo\0bar \0"],
505['u', 'a8', "foo\0bar \0", "foo\0bar "],
506['p', 'Z*', "foo\0bar\0 ", "foo\0bar\0 \0"],
fa8ec7c1 507['p', 'Z11', "foo\0bar\0 ", "foo\0bar\0 \0\0"],
0b568b5f
MS
508['p', 'Z3', "foo", "fo\0"],
509['u', 'Z*', "foo\0bar \0", "foo"],
510['u', 'Z8', "foo\0bar \0", "foo"],
28be1210 511)
0b568b5f
MS
512{
513 my ($what, $template, $in, $out) = @$_;
514 my $got = $what eq 'u' ? (unpack $template, $in) : (pack $template, $in);
515 unless (is($got, $out)) {
0b568b5f 516 my $un = $what eq 'u' ? 'un' : '';
9e17a6b8
NC
517 print "# ${un}pack ('$template', "._qq($in).') gave '._qq($out).
518 ' not '._qq($got)."\n";
0b568b5f 519 }
d99ad34e 520}
726ea183 521
40837afc 522print "# packing native shorts/ints/longs\n";
726ea183 523
0b568b5f
MS
524is(length(pack("s!", 0)), $Config{shortsize});
525is(length(pack("i!", 0)), $Config{intsize});
526is(length(pack("l!", 0)), $Config{longsize});
527ok(length(pack("s!", 0)) <= length(pack("i!", 0)));
528ok(length(pack("i!", 0)) <= length(pack("l!", 0)));
529is(length(pack("i!", 0)), length(pack("i", 0)));
726ea183 530
fa8ec7c1 531sub numbers {
1109a392
MHM
532 my $base = shift;
533 my @formats = ($base);
534 $base =~ /^[silqjfdp]/i and push @formats, "$base>", "$base<";
535 for my $format (@formats) {
536 numbers_with_total ($format, undef, @_);
537 }
d99ad34e 538}
726ea183 539
fa8ec7c1
NC
540sub numbers_with_total {
541 my $format = shift;
542 my $total = shift;
543 if (!defined $total) {
544 foreach (@_) {
545 $total += $_;
546 }
547 }
40837afc 548 print "# numbers test for $format\n";
fa8ec7c1 549 foreach (@_) {
0b568b5f
MS
550 SKIP: {
551 my $out = eval {unpack($format, pack($format, $_))};
1109a392
MHM
552 skip "cannot pack '$format' on this perl", 2
553 if is_valid_error($@);
0b568b5f 554
96b96e00
NC
555 is($@, '', "no error");
556 is($out, $_, "unpack pack $format $_");
fa8ec7c1 557 }
fa8ec7c1 558 }
726ea183 559
fa8ec7c1
NC
560 my $skip_if_longer_than = ~0; # "Infinity"
561 if (~0 - 1 == ~0) {
562 # If we're running with -DNO_PERLPRESERVE_IVUV and NVs don't preserve all
563 # UVs (in which case ~0 is NV, ~0-1 will be the same NV) then we can't
564 # correctly in perl calculate UV totals for long checksums, as pp_unpack
565 # is using UV maths, and we've only got NVs.
53133ed1 566 $skip_if_longer_than = $Config{nv_preserves_uv_bits};
fa8ec7c1 567 }
726ea183 568
fa8ec7c1 569 foreach ('', 1, 2, 3, 15, 16, 17, 31, 32, 33, 53, 54, 63, 64, 65) {
0b568b5f
MS
570 SKIP: {
571 my $sum = eval {unpack "%$_$format*", pack "$format*", @_};
572 skip "cannot pack '$format' on this perl", 3
1109a392 573 if is_valid_error($@);
0b568b5f 574
96b96e00
NC
575 is($@, '', "no error");
576 ok(defined $sum, "sum bits $_, format $format defined");
0b568b5f
MS
577
578 my $len = $_; # Copy, so that we can reassign ''
579 $len = 16 unless length $len;
580
581 SKIP: {
582 skip "cannot test checksums over $skip_if_longer_than bits", 1
583 if $len > $skip_if_longer_than;
584
585 # Our problem with testing this portably is that the checksum code in
586 # pp_unpack is able to cast signed to unsigned, and do modulo 2**n
587 # arithmetic in unsigned ints, which perl has no operators to do.
588 # (use integer; does signed ints, which won't wrap on UTS, which is just
589 # fine with ANSI, but not with most people's assumptions.
590 # This is why we need to supply the totals for 'Q' as there's no way in
591 # perl to calculate them, short of unpack '%0Q' (is that documented?)
592 # ** returns NVs; make sure it's IV.
593 my $max = 1 + 2 * (int (2 ** ($len-1))-1); # The max possible checksum
594 my $max_p1 = $max + 1;
595 my ($max_is_integer, $max_p1_is_integer);
596 $max_p1_is_integer = 1 unless $max_p1 + 1 == $max_p1;
597 $max_is_integer = 1 if $max - 1 < ~0;
598
599 my $calc_sum;
600 if (ref $total) {
601 $calc_sum = &$total($len);
602 } else {
603 $calc_sum = $total;
604 # Shift into range by some multiple of the total
53f3fd80 605 my $mult = $max_p1 ? int ($total / $max_p1) : undef;
0b568b5f
MS
606 # Need this to make sure that -1 + (~0+1) is ~0 (ie still integer)
607 $calc_sum = $total - $mult;
608 $calc_sum -= $mult * $max;
609 if ($calc_sum < 0) {
610 $calc_sum += 1;
611 $calc_sum += $max;
612 }
613 }
614 if ($calc_sum == $calc_sum - 1 && $calc_sum == $max_p1) {
615 # we're into floating point (either by getting out of the range of
28be1210 616 # UV arithmetic, or because we're doing a floating point checksum)
0b568b5f
MS
617 # and our calculation of the checksum has become rounded up to
618 # max_checksum + 1
619 $calc_sum = 0;
620 }
621
0dccb3d1 622 if ($calc_sum == $sum) { # HAS to be ==, not eq (so no is()).
96b96e00 623 pass ("unpack '%$_$format' gave $sum");
0b568b5f
MS
624 } else {
625 my $delta = 1.000001;
626 if ($format =~ tr /dDfF//
627 && ($calc_sum <= $sum * $delta && $calc_sum >= $sum / $delta)) {
0dccb3d1 628 pass ("unpack '%$_$format' gave $sum, expected $calc_sum");
0b568b5f
MS
629 } else {
630 my $text = ref $total ? &$total($len) : $total;
631 fail;
632 print "# For list (" . join (", ", @_) . ") (total $text)"
633 . " packed with $format unpack '%$_$format' gave $sum,"
634 . " expected $calc_sum\n";
635 }
636 }
fa8ec7c1 637 }
96b96e00 638 }
2e821511
NC
639 }
640}
641
fa8ec7c1
NC
642numbers ('c', -128, -1, 0, 1, 127);
643numbers ('C', 0, 1, 127, 128, 255);
f337b084 644numbers ('W', 0, 1, 127, 128, 255, 256, 0x7ff, 0x800, 0xfffd);
fa8ec7c1
NC
645numbers ('s', -32768, -1, 0, 1, 32767);
646numbers ('S', 0, 1, 32767, 32768, 65535);
647numbers ('i', -2147483648, -1, 0, 1, 2147483647);
648numbers ('I', 0, 1, 2147483647, 2147483648, 4294967295);
649numbers ('l', -2147483648, -1, 0, 1, 2147483647);
650numbers ('L', 0, 1, 2147483647, 2147483648, 4294967295);
651numbers ('s!', -32768, -1, 0, 1, 32767);
652numbers ('S!', 0, 1, 32767, 32768, 65535);
653numbers ('i!', -2147483648, -1, 0, 1, 2147483647);
654numbers ('I!', 0, 1, 2147483647, 2147483648, 4294967295);
655numbers ('l!', -2147483648, -1, 0, 1, 2147483647);
656numbers ('L!', 0, 1, 2147483647, 2147483648, 4294967295);
657numbers ('n', 0, 1, 32767, 32768, 65535);
658numbers ('v', 0, 1, 32767, 32768, 65535);
659numbers ('N', 0, 1, 2147483647, 2147483648, 4294967295);
660numbers ('V', 0, 1, 2147483647, 2147483648, 4294967295);
068bd2e7
MHM
661numbers ('n!', -32768, -1, 0, 1, 32767);
662numbers ('v!', -32768, -1, 0, 1, 32767);
663numbers ('N!', -2147483648, -1, 0, 1, 2147483647);
664numbers ('V!', -2147483648, -1, 0, 1, 2147483647);
fa8ec7c1
NC
665# All these should have exact binary representations:
666numbers ('f', -1, 0, 0.5, 42, 2**34);
b85d93de
NC
667numbers ('d', -(2**34), -1, 0, 1, 2**34);
668## These don't, but 'd' is NV. XXX wrong, it's double
669#numbers ('d', -1, 0, 1, 1-exp(-1), -exp(1));
fa8ec7c1
NC
670
671numbers_with_total ('q', -1,
672 -9223372036854775808, -1, 0, 1,9223372036854775807);
800e6488
JH
673# This total is icky, but the true total is 2**65-1, and need a way to generate
674# the epxected checksum on any system including those where NVs can preserve
675# 65 bits. (long double is 128 bits on sparc, so they certainly can)
676# or where rounding is down not up on binary conversion (crays)
677numbers_with_total ('Q', sub {
678 my $len = shift;
679 $len = 65 if $len > 65; # unmasked total is 2**65-1 here
680 my $total = 1 + 2 * (int (2**($len - 1)) - 1);
681 return 0 if $total == $total - 1; # Overflowed integers
682 return $total; # NVs still accurate to nearest integer
683 },
fa8ec7c1
NC
684 0, 1,9223372036854775807, 9223372036854775808,
685 18446744073709551615);
686
40837afc 687print "# pack nvNV byteorders\n";
fa8ec7c1 688
0b568b5f
MS
689is(pack("n", 0xdead), "\xde\xad");
690is(pack("v", 0xdead), "\xad\xde");
691is(pack("N", 0xdeadbeef), "\xde\xad\xbe\xef");
692is(pack("V", 0xdeadbeef), "\xef\xbe\xad\xde");
43192e07 693
d9db00a6
NC
694SKIP: {
695 skip $no_signedness, 4 if $no_signedness;
696 is(pack("n!", 0xdead), "\xde\xad");
697 is(pack("v!", 0xdead), "\xad\xde");
698 is(pack("N!", 0xdeadbeef), "\xde\xad\xbe\xef");
699 is(pack("V!", 0xdeadbeef), "\xef\xbe\xad\xde");
700}
068bd2e7 701
1109a392
MHM
702print "# test big-/little-endian conversion\n";
703
704sub byteorder
705{
706 my $format = shift;
707 print "# byteorder test for $format\n";
708 for my $value (@_) {
709 SKIP: {
710 my($nat,$be,$le) = eval { map { pack $format.$_, $value } '', '>', '<' };
711 skip "cannot pack '$format' on this perl", 5
712 if is_valid_error($@);
713
90d0f5d9
RGS
714 {
715 use warnings qw(NONFATAL utf8);
716 print "# [$value][$nat][$be][$le][$@]\n";
717 }
1109a392
MHM
718
719 SKIP: {
720 skip "cannot compare native byteorder with big-/little-endian", 1
721 if $ByteOrder eq 'unknown';
722
723 is($nat, $ByteOrder eq 'big' ? $be : $le);
724 }
725 is($be, reverse($le));
726 my @x = eval { unpack "$format$format>$format<", $nat.$be.$le };
727
728 print "# [$value][", join('][', @x), "][$@]\n";
729
730 is($@, '');
731 is($x[0], $x[1]);
732 is($x[0], $x[2]);
733 }
734 }
735}
736
737byteorder('s', -32768, -1, 0, 1, 32767);
738byteorder('S', 0, 1, 32767, 32768, 65535);
739byteorder('i', -2147483648, -1, 0, 1, 2147483647);
740byteorder('I', 0, 1, 2147483647, 2147483648, 4294967295);
741byteorder('l', -2147483648, -1, 0, 1, 2147483647);
742byteorder('L', 0, 1, 2147483647, 2147483648, 4294967295);
743byteorder('j', -2147483648, -1, 0, 1, 2147483647);
744byteorder('J', 0, 1, 2147483647, 2147483648, 4294967295);
745byteorder('s!', -32768, -1, 0, 1, 32767);
746byteorder('S!', 0, 1, 32767, 32768, 65535);
747byteorder('i!', -2147483648, -1, 0, 1, 2147483647);
748byteorder('I!', 0, 1, 2147483647, 2147483648, 4294967295);
749byteorder('l!', -2147483648, -1, 0, 1, 2147483647);
750byteorder('L!', 0, 1, 2147483647, 2147483648, 4294967295);
751byteorder('q', -9223372036854775808, -1, 0, 1, 9223372036854775807);
752byteorder('Q', 0, 1, 9223372036854775807, 9223372036854775808, 18446744073709551615);
753byteorder('f', -1, 0, 0.5, 42, 2**34);
754byteorder('F', -1, 0, 0.5, 42, 2**34);
755byteorder('d', -(2**34), -1, 0, 1, 2**34);
756byteorder('D', -(2**34), -1, 0, 1, 2**34);
757
758print "# test negative numbers\n";
759
760SKIP: {
761 skip "platform is not using two's complement for negative integers", 120
762 unless $IsTwosComplement;
763
764 for my $format (qw(s i l j s! i! l! q)) {
765 SKIP: {
766 my($nat,$be,$le) = eval { map { pack $format.$_, -1 } '', '>', '<' };
767 skip "cannot pack '$format' on this perl", 15
768 if is_valid_error($@);
769
770 my $len = length $nat;
771 is($_, "\xFF"x$len) for $nat, $be, $le;
772
773 my(@val,@ref);
774 if ($len >= 8) {
775 @val = (-2, -81985529216486896, -9223372036854775808);
776 @ref = ("\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFE",
777 "\xFE\xDC\xBA\x98\x76\x54\x32\x10",
778 "\x80\x00\x00\x00\x00\x00\x00\x00");
779 }
780 elsif ($len >= 4) {
781 @val = (-2, -19088744, -2147483648);
782 @ref = ("\xFF\xFF\xFF\xFE",
783 "\xFE\xDC\xBA\x98",
784 "\x80\x00\x00\x00");
785 }
786 else {
787 @val = (-2, -292, -32768);
788 @ref = ("\xFF\xFE",
789 "\xFE\xDC",
790 "\x80\x00");
791 }
792 for my $x (@ref) {
793 if ($len > length $x) {
794 $x = $x . "\xFF" x ($len - length $x);
795 }
796 }
797
798 for my $i (0 .. $#val) {
799 my($nat,$be,$le) = eval { map { pack $format.$_, $val[$i] } '', '>', '<' };
800 is($@, '');
801
802 SKIP: {
803 skip "cannot compare native byteorder with big-/little-endian", 1
804 if $ByteOrder eq 'unknown';
805
806 is($nat, $ByteOrder eq 'big' ? $be : $le);
807 }
808
809 is($be, $ref[$i]);
810 is($be, reverse($le));
811 }
812 }
813 }
814}
815
fa8ec7c1
NC
816{
817 # /
818
819 my ($x, $y, $z);
820 eval { ($x) = unpack '/a*','hello' };
49704364 821 like($@, qr!'/' must follow a numeric type!);
72b034c3
NC
822 undef $x;
823 eval { $x = unpack '/a*','hello' };
49704364 824 like($@, qr!'/' must follow a numeric type!);
0b568b5f 825
72b034c3 826 undef $x;
fa8ec7c1 827 eval { ($z,$x,$y) = unpack 'a3/A C/a* C/Z', "003ok \003yes\004z\000abc" };
0b568b5f
MS
828 is($@, '');
829 is($z, 'ok');
830 is($x, 'yes');
831 is($y, 'z');
72b034c3
NC
832 undef $z;
833 eval { $z = unpack 'a3/A C/a* C/Z', "003ok \003yes\004z\000abc" };
834 is($@, '');
835 is($z, 'ok');
836
fa8ec7c1 837
72b034c3 838 undef $x;
fa8ec7c1 839 eval { ($x) = pack '/a*','hello' };
49704364 840 like($@, qr!Invalid type '/'!);
72b034c3
NC
841 undef $x;
842 eval { $x = pack '/a*','hello' };
49704364 843 like($@, qr!Invalid type '/'!);
fa8ec7c1
NC
844
845 $z = pack 'n/a* N/Z* w/A*','string','hi there ','etc';
846 my $expect = "\000\006string\0\0\0\012hi there \000\003etc";
0b568b5f 847 is($z, $expect);
4b5b2118 848
72b034c3 849 undef $x;
b85d93de
NC
850 $expect = 'hello world';
851 eval { ($x) = unpack ("w/a", chr (11) . "hello world!")};
0b568b5f
MS
852 is($x, $expect);
853 is($@, '');
854
72b034c3 855 undef $x;
b85d93de
NC
856 # Doing this in scalar context used to fail.
857 eval { $x = unpack ("w/a", chr (11) . "hello world!")};
0b568b5f
MS
858 is($@, '');
859 is($x, $expect);
b85d93de 860
fa8ec7c1 861 foreach (
0b568b5f
MS
862 ['a/a*/a*', '212ab345678901234567','ab3456789012'],
863 ['a/a*/a*', '3012ab345678901234567', 'ab3456789012'],
864 ['a/a*/b*', '212ab', $Is_EBCDIC ? '100000010100' : '100001100100'],
28be1210 865 )
0b568b5f 866 {
fa8ec7c1 867 my ($pat, $in, $expect) = @$_;
72b034c3 868 undef $x;
fa8ec7c1 869 eval { ($x) = unpack $pat, $in };
0b568b5f 870 is($@, '');
28be1210 871 is($x, $expect) ||
0b568b5f
MS
872 printf "# list unpack ('$pat', '$in') gave %s, expected '$expect'\n",
873 encode_list ($x);
874
72b034c3 875 undef $x;
b85d93de 876 eval { $x = unpack $pat, $in };
0b568b5f
MS
877 is($@, '');
878 is($x, $expect) ||
879 printf "# scalar unpack ('$pat', '$in') gave %s, expected '$expect'\n",
880 encode_list ($x);
fa8ec7c1 881 }
4b5b2118 882
0b568b5f 883 # / with #
17f4a12d 884
72b034c3 885 my $pattern = <<'EOU';
17f4a12d
IZ
886 a3/A # Count in ASCII
887 C/a* # Count in a C char
888 C/Z # Count in a C char but skip after \0
889EOU
17f4a12d 890
72b034c3
NC
891 $x = $y = $z =undef;
892 eval { ($z,$x,$y) = unpack $pattern, "003ok \003yes\004z\000abc" };
0b568b5f
MS
893 is($@, '');
894 is($z, 'ok');
895 is($x, 'yes');
896 is($y, 'z');
72b034c3
NC
897 undef $x;
898 eval { $z = unpack $pattern, "003ok \003yes\004z\000abc" };
899 is($@, '');
900 is($z, 'ok');
0b568b5f 901
72b034c3 902 $pattern = <<'EOP';
17f4a12d
IZ
903 n/a* # Count as network short
904 w/A* # Count a BER integer
905EOP
fa8ec7c1 906 $expect = "\000\006string\003etc";
72b034c3 907 $z = pack $pattern,'string','etc';
9e17a6b8 908 is($z, $expect);
fa8ec7c1
NC
909}
910
60a99fa7
JH
911
912SKIP: {
913 skip("(EBCDIC and) version strings are bad idea", 2) if $Is_EBCDIC;
914
915 is("1.20.300.4000", sprintf "%vd", pack("U*",1,20,300,4000));
916 is("1.20.300.4000", sprintf "%vd", pack(" U*",1,20,300,4000));
917}
0b568b5f 918isnt(v1.20.300.4000, sprintf "%vd", pack("C0U*",1,20,300,4000));
fa8ec7c1 919
0b568b5f 920my $rslt = $Is_EBCDIC ? "156 67" : "199 162";
1651fc44 921is(join(" ", unpack("U0 C*", chr(0x1e2))), $rslt);
fa8ec7c1
NC
922
923# does pack U create Unicode?
0b568b5f 924is(ord(pack('U', 300)), 300);
fa8ec7c1
NC
925
926# does unpack U deref Unicode?
0b568b5f 927is((unpack('U', chr(300)))[0], 300);
fa8ec7c1
NC
928
929# is unpack U the reverse of pack U for Unicode string?
0b568b5f 930is("@{[unpack('U*', pack('U*', 100, 200, 300))]}", "100 200 300");
fa8ec7c1
NC
931
932# is unpack U the reverse of pack U for byte string?
0b568b5f
MS
933is("@{[unpack('U*', pack('U*', 100, 200))]}", "100 200");
934
935
936SKIP: {
937 skip "Not for EBCDIC", 4 if $Is_EBCDIC;
fa8ec7c1 938
7eed2ccc 939 # does pack U0C create Unicode?
0b568b5f 940 is("@{[pack('U0C*', 100, 195, 136)]}", v100.v200);
fa8ec7c1 941
7eed2ccc 942 # does pack C0U create characters?
0b568b5f 943 is("@{[pack('C0U*', 100, 200)]}", pack("C*", 100, 195, 136));
fa8ec7c1 944
2dcec3fe
JH
945 # does unpack U0U on byte data warn?
946 {
bd7d4f4d
NC
947 use warnings qw(NONFATAL all);;
948
08ca2aa3 949 my $bad = pack("U0C", 255);
2dcec3fe 950 local $SIG{__WARN__} = sub { $@ = "@_" };
08ca2aa3 951 my @null = unpack('U0U', $bad);
1109a392 952 like($@, qr/^Malformed UTF-8 character /);
2dcec3fe 953 }
35bcd338
JH
954}
955
fa8ec7c1
NC
956{
957 my $p = pack 'i*', -2147483648, ~0, 0, 1, 2147483647;
958 my (@a);
959 # bug - % had to be at the start of the pattern, no leading whitespace or
960 # comments. %i! didn't work at all.
961 foreach my $pat ('%32i*', ' %32i*', "# Muhahahaha\n%32i*", '%32i* ',
962 '%32i!*', ' %32i!*', "\n#\n#\n\r \t\f%32i!*", '%32i!*#') {
963 @a = unpack $pat, $p;
0b568b5f 964 is($a[0], 0xFFFFFFFF) || print "# $pat\n";
fa8ec7c1 965 @a = scalar unpack $pat, $p;
0b568b5f 966 is($a[0], 0xFFFFFFFF) || print "# $pat\n";
fa8ec7c1
NC
967 }
968
969
970 $p = pack 'I*', 42, 12;
971 # Multiline patterns in scalar context failed.
972 foreach my $pat ('I', <<EOPOEMSNIPPET, 'I#I', 'I # I', 'I # !!!') {
973# On the Ning Nang Nong
974# Where the Cows go Bong!
975# And the Monkeys all say Boo!
976I
977EOPOEMSNIPPET
0b568b5f
MS
978 @a = unpack $pat, $p;
979 is(scalar @a, 1);
980 is($a[0], 42);
981 @a = scalar unpack $pat, $p;
982 is(scalar @a, 1);
983 is($a[0], 42);
984 }
fa8ec7c1
NC
985
986 # shorts (of all flavours) didn't calculate checksums > 32 bits with floating
987 # point, so a pathologically long pattern would wrap at 32 bits.
988 my $pat = "\xff\xff"x65538; # Start with it long, to save any copying.
989 foreach (4,3,2,1,0) {
990 my $len = 65534 + $_;
0b568b5f 991 is(unpack ("%33n$len", $pat), 65535 * $len);
fa8ec7c1
NC
992 }
993}
b85d93de
NC
994
995
996# pack x X @
997foreach (
0b568b5f
MS
998 ['x', "N", "\0"],
999 ['x4', "N", "\0"x4],
1000 ['xX', "N", ""],
1001 ['xXa*', "Nick", "Nick"],
1002 ['a5Xa5', "cameL", "llama", "camellama"],
1003 ['@4', 'N', "\0"x4],
1004 ['a*@8a*', 'Camel', 'Dromedary', "Camel\0\0\0Dromedary"],
1005 ['a*@4a', 'Perl rules', '!', 'Perl!'],
28be1210 1006)
0b568b5f 1007{
b85d93de
NC
1008 my ($template, @in) = @$_;
1009 my $out = pop @in;
1010 my $got = eval {pack $template, @in};
0b568b5f
MS
1011 is($@, '');
1012 is($out, $got) ||
1013 printf "# pack ('$template', %s) gave %s expected %s\n",
1014 encode_list (@in), encode_list ($got), encode_list ($out);
b85d93de
NC
1015}
1016
1017# unpack x X @
1018foreach (
0b568b5f
MS
1019 ['x', "N"],
1020 ['xX', "N"],
1021 ['xXa*', "Nick", "Nick"],
1022 ['a5Xa5', "camellama", "camel", "llama"],
1023 ['@3', "ice"],
1024 ['@2a2', "water", "te"],
1025 ['a*@1a3', "steam", "steam", "tea"],
28be1210 1026)
0b568b5f 1027{
b85d93de
NC
1028 my ($template, $in, @out) = @$_;
1029 my @got = eval {unpack $template, $in};
0b568b5f 1030 is($@, '');
c8f824eb 1031 ok (list_eq (\@got, \@out)) ||
9e17a6b8
NC
1032 printf "# list unpack ('$template', %s) gave %s expected %s\n",
1033 _qq($in), encode_list (@got), encode_list (@out);
b85d93de
NC
1034
1035 my $got = eval {unpack $template, $in};
0b568b5f
MS
1036 is($@, '');
1037 @out ? is( $got, $out[0] ) # 1 or more items; should get first
1038 : ok( !defined $got ) # 0 items; should get undef
9e17a6b8
NC
1039 or printf "# scalar unpack ('$template', %s) gave %s expected %s\n",
1040 _qq($in), encode_list ($got), encode_list ($out[0]);
b85d93de 1041}
d50dd4e4
JH
1042
1043{
d50dd4e4
JH
1044 my $t = 'Z*Z*';
1045 my ($u, $v) = qw(foo xyzzy);
1046 my $p = pack($t, $u, $v);
1047 my @u = unpack($t, $p);
0b568b5f
MS
1048 is(scalar @u, 2);
1049 is($u[0], $u);
1050 is($u[1], $v);
d50dd4e4 1051}
bf80f5a2
JH
1052
1053{
0b568b5f 1054 is((unpack("w/a*", "\x02abc"))[0], "ab");
bf80f5a2 1055
0b568b5f 1056 # "w/a*" should be seen as one unit
bf80f5a2 1057
0b568b5f 1058 is(scalar unpack("w/a*", "\x02abc"), "ab");
bf80f5a2 1059}
b81060d6 1060
d9db00a6 1061SKIP: {
66c611c5
MHM
1062 print "# group modifiers\n";
1063
d9db00a6
NC
1064 skip $no_endianness, 3 * 2 + 3 * 2 + 1 if $no_endianness;
1065
66c611c5
MHM
1066 for my $t (qw{ (s<)< (sl>s)> (s(l(sl)<l)s)< }) {
1067 print "# testing pattern '$t'\n";
1068 eval { ($_) = unpack($t, 'x'x18); };
1069 is($@, '');
1070 eval { $_ = pack($t, (0)x6); };
1071 is($@, '');
1072 }
1073
1074 for my $t (qw{ (s<)> (sl>s)< (s(l(sl)<l)s)> }) {
1075 print "# testing pattern '$t'\n";
1076 eval { ($_) = unpack($t, 'x'x18); };
1077 like($@, qr/Can't use '[<>]' in a group with different byte-order in unpack/);
1078 eval { $_ = pack($t, (0)x6); };
1079 like($@, qr/Can't use '[<>]' in a group with different byte-order in pack/);
1080 }
1081
d9db00a6
NC
1082 is(pack('L<L>', (0x12345678)x2),
1083 pack('(((L1)1)<)(((L)1)1)>1', (0x12345678)x2));
1084}
1085
1086{
66c611c5
MHM
1087 sub compress_template {
1088 my $t = shift;
1089 for my $mod (qw( < > )) {
1090 $t =~ s/((?:(?:[SILQJFDP]!?$mod|[^SILQJFDP\W]!?)(?:\d+|\*|\[(?:[^]]+)\])?\/?){2,})/
1091 my $x = $1; $x =~ s!$mod!!g ? "($x)$mod" : $x /ieg;
1092 }
1093 return $t;
1094 }
1095
66c611c5
MHM
1096 my %templates = (
1097 's<' => [-42],
1098 's<c2x![S]S<' => [-42, -11, 12, 4711],
1099 '(i<j<[s]l<)3' => [-11, -22, -33, 1000000, 1100, 2201, 3302,
1100 -1000000, 32767, -32768, 1, -123456789 ],
1101 '(I!<4(J<2L<)3)5' => [1 .. 65],
1102 'q<Q<' => [-50000000005, 60000000006],
1103 'f<F<d<' => [3.14159, 111.11, 2222.22],
1104 'D<cCD<' => [1e42, -128, 255, 1e-42],
1105 'n/a*' => ['/usr/bin/perl'],
1106 'C/a*S</A*L</Z*I</a*' => [qw(Just another Perl hacker)],
1107 );
1108
1109 for my $tle (sort keys %templates) {
1110 my @d = @{$templates{$tle}};
1111 my $tbe = $tle;
1112 $tbe =~ y/</>/;
1113 for my $t ($tbe, $tle) {
1114 my $c = compress_template($t);
1115 print "# '$t' -> '$c'\n";
1116 SKIP: {
1117 my $p1 = eval { pack $t, @d };
1118 skip "cannot pack '$t' on this perl", 5 if is_valid_error($@);
1119 my $p2 = eval { pack $c, @d };
1120 is($@, '');
1121 is($p1, $p2);
1122 s!(/[aAZ])\*!$1!g for $t, $c;
1123 my @u1 = eval { unpack $t, $p1 };
1124 is($@, '');
1125 my @u2 = eval { unpack $c, $p2 };
1126 is($@, '');
1127 is(join('!', @u1), join('!', @u2));
1128 }
1129 }
1130 }
1131}
1132
1133{
b81060d6
WL
1134 # from Wolfgang Laun: fix in change #13163
1135
1136 my $s = 'ABC' x 10;
644d52eb
JH
1137 my $t = '*';
1138 my $x = ord($t);
b81060d6
WL
1139 my $buf = pack( 'Z*/A* C', $s, $x );
1140 my $y;
1141
1142 my $h = $buf;
1143 $h =~ s/[^[:print:]]/./g;
1144 ( $s, $y ) = unpack( "Z*/A* C", $buf );
644d52eb 1145 is($h, "30.ABCABCABCABCABCABCABCABCABCABC$t");
0b568b5f
MS
1146 is(length $buf, 34);
1147 is($s, "ABCABCABCABCABCABCABCABCABCABC");
644d52eb 1148 is($y, $x);
b81060d6 1149}
3bf38418
WL
1150
1151{
b223308b 1152 # from Wolfgang Laun: fix in change #13288
3bf38418 1153
b223308b 1154 eval { my $t=unpack("P*", "abc") };
49704364 1155 like($@, qr/'P' must have an explicit size/);
3bf38418 1156}
18529408
IZ
1157
1158{ # Grouping constructs
1159 my (@a, @b);
1160 @a = unpack '(SL)', pack 'SLSLSL', 67..90;
1161 is("@a", "67 68");
1162 @a = unpack '(SL)3', pack 'SLSLSL', 67..90;
1163 @b = (67..72);
1164 is("@a", "@b");
1165 @a = unpack '(SL)3', pack 'SLSLSLSL', 67..90;
1166 is("@a", "@b");
1167 @a = unpack '(SL)[3]', pack 'SLSLSLSL', 67..90;
1168 is("@a", "@b");
1169 @a = unpack '(SL)[2] SL', pack 'SLSLSLSL', 67..90;
1170 is("@a", "@b");
1171 @a = unpack 'A/(SL)', pack 'ASLSLSLSL', 3, 67..90;
1172 is("@a", "@b");
1173 @a = unpack 'A/(SL)SL', pack 'ASLSLSLSL', 2, 67..90;
1174 is("@a", "@b");
1175 @a = unpack '(SL)*', pack 'SLSLSLSL', 67..90;
1176 @b = (67..74);
1177 is("@a", "@b");
1178 @a = unpack '(SL)*SL', pack 'SLSLSLSL', 67..90;
1179 is("@a", "@b");
1180 eval { @a = unpack '(*SL)', '' };
1181 like($@, qr/\(\)-group starts with a count/);
1182 eval { @a = unpack '(3SL)', '' };
1183 like($@, qr/\(\)-group starts with a count/);
1184 eval { @a = unpack '([3]SL)', '' };
1185 like($@, qr/\(\)-group starts with a count/);
1186 eval { @a = pack '(*SL)' };
1187 like($@, qr/\(\)-group starts with a count/);
1188 @a = unpack '(SL)3 SL', pack '(SL)4', 67..74;
1189 is("@a", "@b");
1190 @a = unpack '(SL)3 SL', pack '(SL)[4]', 67..74;
1191 is("@a", "@b");
1192 @a = unpack '(SL)3 SL', pack '(SL)*', 67..74;
1193 is("@a", "@b");
1194}
206947d2 1195
49704364 1196{ # more on grouping (W.Laun)
49704364
LW
1197 # @ absolute within ()-group
1198 my $badc = pack( '(a)*', unpack( '(@1a @0a @2)*', 'abcd' ) );
1199 is( $badc, 'badc' );
1200 my @b = ( 1, 2, 3 );
1201 my $buf = pack( '(@1c)((@2C)@3c)', @b );
1202 is( $buf, "\0\1\0\0\2\3" );
1203 my @a = unpack( '(@1c)((@2c)@3c)', $buf );
1204 is( "@a", "@b" );
1205
28be1210 1206 # various unpack count/code scenarios
49704364
LW
1207 my @Env = ( a => 'AAA', b => 'BBB' );
1208 my $env = pack( 'S(S/A*S/A*)*', @Env/2, @Env );
1209
1210 # unpack full length - ok
1211 my @pup = unpack( 'S/(S/A* S/A*)', $env );
1212 is( "@pup", "@Env" );
1213
1214 # warn when count/code goes beyond end of string
1215 # \0002 \0001 a \0003 AAA \0001 b \0003 BBB
1216 # 2 4 5 7 10 1213
1217 eval { @pup = unpack( 'S/(S/A* S/A*)', substr( $env, 0, 13 ) ) };
1218 like( $@, qr{length/code after end of string} );
28be1210 1219
49704364
LW
1220 # postfix repeat count
1221 $env = pack( '(S/A* S/A*)' . @Env/2, @Env );
1222
1223 # warn when count/code goes beyond end of string
1224 # \0001 a \0003 AAA \0001 b \0003 BBB
1225 # 2 3c 5 8 10 11 13 16
1226 eval { @pup = unpack( '(S/A* S/A*)' . @Env/2, substr( $env, 0, 11 ) ) };
1227 like( $@, qr{length/code after end of string} );
1228
1229 # catch stack overflow/segfault
1230 eval { $_ = pack( ('(' x 105) . 'A' . (')' x 105) ); };
1231 like( $@, qr{Too deeply nested \(\)-groups} );
1232}
1233
1234{ # syntax checks (W.Laun)
bd7d4f4d 1235 use warnings qw(NONFATAL all);;
49704364
LW
1236 my @warning;
1237 local $SIG{__WARN__} = sub {
1238 push( @warning, $_[0] );
1239 };
1240 eval { my $s = pack( 'Ax![4c]A', 1..5 ); };
1241 like( $@, qr{Malformed integer in \[\]} );
1242
1243 eval { my $buf = pack( '(c/*a*)', 'AAA', 'BB' ); };
1244 like( $@, qr{'/' does not take a repeat count} );
1245
1246 eval { my @inf = unpack( 'c/1a', "\x03AAA\x02BB" ); };
1247 like( $@, qr{'/' does not take a repeat count} );
1248
1249 eval { my @inf = unpack( 'c/*a', "\x03AAA\x02BB" ); };
1250 like( $@, qr{'/' does not take a repeat count} );
1251
28be1210 1252 # white space where possible
49704364
LW
1253 my @Env = ( a => 'AAA', b => 'BBB' );
1254 my $env = pack( ' S ( S / A* S / A* )* ', @Env/2, @Env );
1255 my @pup = unpack( ' S / ( S / A* S / A* ) ', $env );
1256 is( "@pup", "@Env" );
1257
1258 # white space in 4 wrong places
1259 for my $temp ( 'A ![4]', 'A [4]', 'A *', 'A 4' ){
1260 eval { my $s = pack( $temp, 'B' ); };
1261 like( $@, qr{Invalid type } );
1262 }
1263
1264 # warning for commas
1265 @warning = ();
1266 my $x = pack( 'I,A', 4, 'X' );
1267 like( $warning[0], qr{Invalid type ','} );
1268
1269 # comma warning only once
1270 @warning = ();
1271 $x = pack( 'C(C,C)C,C', 65..71 );
1272 like( scalar @warning, 1 );
1273
1274 # forbidden code in []
1275 eval { my $x = pack( 'A[@4]', 'XXXX' ); };
1276 like( $@, qr{Within \[\]-length '\@' not allowed} );
1277
1278 # @ repeat default 1
1279 my $s = pack( 'AA@A', 'A', 'B', 'C' );
1280 my @c = unpack( 'AA@A', $s );
28be1210
TH
1281 is( $s, 'AC' );
1282 is( "@c", "A C C" );
49704364
LW
1283
1284 # no unpack code after /
1285 eval { my @a = unpack( "C/", "\3" ); };
1286 like( $@, qr{Code missing after '/'} );
1287
d9db00a6
NC
1288 SKIP: {
1289 skip $no_endianness, 6 if $no_endianness;
1290
1291 # modifier warnings
1292 @warning = ();
1293 $x = pack "I>>s!!", 47, 11;
1294 ($x) = unpack "I<<l!>!>", 'x'x20;
1295 is(scalar @warning, 5);
1296 like($warning[0], qr/Duplicate modifier '>' after 'I' in pack/);
1297 like($warning[1], qr/Duplicate modifier '!' after 's' in pack/);
1298 like($warning[2], qr/Duplicate modifier '<' after 'I' in unpack/);
1299 like($warning[3], qr/Duplicate modifier '!' after 'l' in unpack/);
1300 like($warning[4], qr/Duplicate modifier '>' after 'l' in unpack/);
1301 }
49704364
LW
1302}
1303
206947d2 1304{ # Repeat count [SUBEXPR]
f337b084 1305 my @codes = qw( x A Z a c C W B b H h s v n S i I l V N L p P f F d
92d41999
JH
1306 s! S! i! I! l! L! j J);
1307 my $G;
206947d2
IZ
1308 if (eval { pack 'q', 1 } ) {
1309 push @codes, qw(q Q);
1310 } else {
1109a392 1311 push @codes, qw(s S); # Keep the count the same
206947d2 1312 }
92d41999
JH
1313 if (eval { pack 'D', 1 } ) {
1314 push @codes, 'D';
1315 } else {
1316 push @codes, 'd'; # Keep the count the same
1317 }
206947d2 1318
1109a392
MHM
1319 push @codes, map { /^[silqjfdp]/i ? ("$_<", "$_>") : () } @codes;
1320
206947d2
IZ
1321 my %val;
1322 @val{@codes} = map { / [Xx] (?{ undef })
1323 | [AZa] (?{ 'something' })
1324 | C (?{ 214 })
f337b084 1325 | W (?{ 8188 })
206947d2
IZ
1326 | c (?{ 114 })
1327 | [Bb] (?{ '101' })
1328 | [Hh] (?{ 'b8' })
92d41999 1329 | [svnSiIlVNLqQjJ] (?{ 10111 })
206947d2
IZ
1330 | [FfDd] (?{ 1.36514538e67 })
1331 | [pP] (?{ "try this buffer" })
1332 /x; $^R } @codes;
1333 my @end = (0x12345678, 0x23456781, 0x35465768, 0x15263748);
1334 my $end = "N4";
1335
1336 for my $type (@codes) {
1337 my @list = $val{$type};
1338 @list = () unless defined $list[0];
1339 for my $count ('', '3', '[11]') {
1340 my $c = 1;
1341 $c = $1 if $count =~ /(\d+)/;
1342 my @list1 = @list;
1343 @list1 = (@list1) x $c unless $type =~ /[XxAaZBbHhP]/;
1344 for my $groupend ('', ')2', ')[8]') {
1345 my $groupbegin = ($groupend ? '(' : '');
1346 $c = 1;
1347 $c = $1 if $groupend =~ /(\d+)/;
1348 my @list2 = (@list1) x $c;
1349
1109a392
MHM
1350 SKIP: {
1351 my $junk1 = "$groupbegin $type$count $groupend";
1352 # print "# junk1=$junk1\n";
1353 my $p = eval { pack $junk1, @list2 };
1354 skip "cannot pack '$type' on this perl", 12
1355 if is_valid_error($@);
9b72c5e4 1356 die "pack $junk1 failed: $@" if $@;
1109a392
MHM
1357
1358 my $half = int( (length $p)/2 );
1359 for my $move ('', "X$half", "X!$half", 'x1', 'x!8', "x$half") {
1360 my $junk = "$junk1 $move";
1361 # print "# junk='$junk', list=(@list2)\n";
1362 $p = pack "$junk $end", @list2, @end;
1363 my @l = unpack "x[$junk] $end", $p;
1364 is(scalar @l, scalar @end);
1365 is("@l", "@end", "skipping x[$junk]");
1366 }
1367 }
206947d2
IZ
1368 }
1369 }
1370 }
1371}
1372
1373# / is recognized after spaces in scalar context
1374# XXXX no spaces are allowed in pack... In pack only before the slash...
1375is(scalar unpack('A /A Z20', pack 'A/A* Z20', 'bcde', 'xxxxx'), 'bcde');
1376is(scalar unpack('A /A /A Z20', '3004bcde'), 'bcde');
62f95557
IZ
1377
1378{ # X! and x!
1379 my $t = 'C[3] x!8 C[2]';
1380 my @a = (0x73..0x77);
1381 my $p = pack($t, @a);
1382 is($p, "\x73\x74\x75\0\0\0\0\0\x76\x77");
1383 my @b = unpack $t, $p;
1384 is(scalar @b, scalar @a);
1385 is("@b", "@a", 'x!8');
1386 $t = 'x[5] C[6] X!8 C[2]';
1387 @a = (0x73..0x7a);
1388 $p = pack($t, @a);
1389 is($p, "\0\0\0\0\0\x73\x74\x75\x79\x7a");
1390 @b = unpack $t, $p;
1391 @a = (0x73..0x75, 0x79, 0x7a, 0x79, 0x7a);
1392 is(scalar @b, scalar @a);
1393 is("@b", "@a");
1394}
1395
1396{ # struct {char c1; double d; char cc[2];}
1397 my $t = 'C x![d] d C[2]';
1398 my @a = (173, 1.283476517e-45, 42, 215);
1399 my $p = pack $t, @a;
1400 ok( length $p);
1401 my @b = unpack "$t X[$t] $t", $p; # Extract, step back, extract again
1402 is(scalar @b, 2 * scalar @a);
3f7e3417
JH
1403 $b = "@b";
1404 $b =~ s/(?:17000+|16999+)\d+(e-45) /17$1 /gi; # stringification is gamble
1405 is($b, "@a @a");
62f95557 1406
bd7d4f4d 1407 use warnings qw(NONFATAL all);;
62f95557
IZ
1408 my $warning;
1409 local $SIG{__WARN__} = sub {
1410 $warning = $_[0];
1411 };
1412 @b = unpack "x[C] x[$t] X[$t] X[C] $t", "$p\0";
1413
1414 is($warning, undef);
1415 is(scalar @b, scalar @a);
3f7e3417
JH
1416 $b = "@b";
1417 $b =~ s/(?:17000+|16999+)\d+(e-45) /17$1 /gi; # stringification is gamble
1418 is($b, "@a");
62f95557 1419}
92d41999
JH
1420
1421is(length(pack("j", 0)), $Config{ivsize});
1422is(length(pack("J", 0)), $Config{uvsize});
1423is(length(pack("F", 0)), $Config{nvsize});
1424
1425numbers ('j', -2147483648, -1, 0, 1, 2147483647);
1426numbers ('J', 0, 1, 2147483647, 2147483648, 4294967295);
1427numbers ('F', -(2**34), -1, 0, 1, 2**34);
1428SKIP: {
1429 my $t = eval { unpack("D*", pack("D", 12.34)) };
1430
1109a392 1431 skip "Long doubles not in use", 166 if $@ =~ /Invalid type/;
92d41999
JH
1432
1433 is(length(pack("D", 0)), $Config{longdblsize});
1434 numbers ('D', -(2**34), -1, 0, 1, 2**34);
1435}
1436
c8f824eb
NC
1437# Maybe this knowledge needs to be "global" for all of pack.t
1438# Or a "can checksum" which would effectively be all the number types"
1439my %cant_checksum = map {$_=> 1} qw(A Z u w);
1440# not a b B h H
1441foreach 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)) {
1442 SKIP: {
1443 my $packed = eval {pack "${template}4", 1, 4, 9, 16};
1444 if ($@) {
49704364 1445 die unless $@ =~ /Invalid type '$template'/;
c8f824eb
NC
1446 skip ("$template not supported on this perl",
1447 $cant_checksum{$template} ? 4 : 8);
1448 }
1449 my @unpack4 = unpack "${template}4", $packed;
1450 my @unpack = unpack "${template}*", $packed;
1451 my @unpack1 = unpack "${template}", $packed;
1452 my @unpack1s = scalar unpack "${template}", $packed;
1453 my @unpack4s = scalar unpack "${template}4", $packed;
1454 my @unpacks = scalar unpack "${template}*", $packed;
1455
1456 my @tests = ( ["${template}4 vs ${template}*", \@unpack4, \@unpack],
1457 ["scalar ${template} ${template}", \@unpack1s, \@unpack1],
1458 ["scalar ${template}4 vs ${template}", \@unpack4s, \@unpack1],
1459 ["scalar ${template}* vs ${template}", \@unpacks, \@unpack1],
1460 );
1461
1462 unless ($cant_checksum{$template}) {
1463 my @unpack4_c = unpack "\%${template}4", $packed;
1464 my @unpack_c = unpack "\%${template}*", $packed;
1465 my @unpack1_c = unpack "\%${template}", $packed;
1466 my @unpack1s_c = scalar unpack "\%${template}", $packed;
1467 my @unpack4s_c = scalar unpack "\%${template}4", $packed;
1468 my @unpacks_c = scalar unpack "\%${template}*", $packed;
1469
1470 push @tests,
1471 ( ["% ${template}4 vs ${template}*", \@unpack4_c, \@unpack_c],
1472 ["% scalar ${template} ${template}", \@unpack1s_c, \@unpack1_c],
1473 ["% scalar ${template}4 vs ${template}*", \@unpack4s_c, \@unpack_c],
1474 ["% scalar ${template}* vs ${template}*", \@unpacks_c, \@unpack_c],
1475 );
1476 }
1477 foreach my $test (@tests) {
1478 ok (list_eq ($test->[1], $test->[2]), $test->[0]) ||
1479 printf "# unpack gave %s expected %s\n",
1480 encode_list (@{$test->[1]}), encode_list (@{$test->[2]});
1481 }
1482 }
1483}
9c3dc587
HS
1484
1485ok(pack('u2', 'AA'), "[perl #8026]"); # used to hang and eat RAM in perl 5.7.2
1486
fe581ec7
JH
1487$_ = pack('c', 65); # 'A' would not be EBCDIC-friendly
1488is(unpack('c'), 65, "one-arg unpack (change #18751)"); # defaulting to $_
db37a92e
JH
1489
1490{
250d67eb 1491 my $a = "X\x0901234567\n" x 100; # \t would not be EBCDIC TAB
db37a92e
JH
1492 my @a = unpack("(a1 c/a)*", $a);
1493 is(scalar @a, 200, "[perl #15288]");
1494 is($a[-1], "01234567\n", "[perl #15288]");
1495 is($a[-2], "X", "[perl #15288]");
1496}
0ed7c1bb 1497
f7f98fdf 1498{
bd7d4f4d 1499 use warnings qw(NONFATAL all);;
f7f98fdf
TH
1500 my $warning;
1501 local $SIG{__WARN__} = sub {
1502 $warning = $_[0];
1503 };
1504 my $out = pack("u99", "foo" x 99);
1505 like($warning, qr/Field too wide in 'u' format in pack at /,
1506 "Warn about too wide uuencode");
1507 is($out, ("_" . "9F]O" x 21 . "\n") x 4 . "M" . "9F]O" x 15 . "\n",
1508 "Use max width in case of too wide uuencode");
1509}
1510
0ed7c1bb
TH
1511# checksums
1512{
1513 # verify that unpack advances correctly wrt a checksum
1514 my (@x) = unpack("b10a", "abcd");
1515 my (@y) = unpack("%b10a", "abcd");
1516 is($x[1], $y[1], "checksum advance ok");
d6d3e8bd
TH
1517
1518 # verify that the checksum is not overflowed with C0
250d67eb
JH
1519 if (ord('A') == 193) {
1520 is(unpack("C0%128U", "/bcd"), unpack("U0%128U", "abcd"), "checksum not overflowed");
1521 } else {
1522 is(unpack("C0%128U", "abcd"), unpack("U0%128U", "abcd"), "checksum not overflowed");
1523 }
0ed7c1bb 1524}
0c81e54b
TH
1525
1526{
1527 # U0 and C0 must be scoped
1528 my (@x) = unpack("a(U0)U", "b\341\277\274");
1529 is($x[0], 'b', 'before scope');
08ca2aa3 1530 is($x[1], 8188, 'after scope');
f337b084
TH
1531
1532 is(pack("a(U0)U", "b", 8188), "b\341\277\274");
0c81e54b 1533}
21c16052
TH
1534
1535{
1536 # counted length prefixes shouldn't change C0/U0 mode
1537 # (note the length is actually 0 in this test)
250d67eb
JH
1538 if (ord('A') == 193) {
1539 is(join(',', unpack("aU0C/UU", "b\0\341\277\274")), 'b,0');
1540 is(join(',', unpack("aU0C/CU", "b\0\341\277\274")), 'b,0');
1541 } else {
1542 is(join(',', unpack("aC/UU", "b\0\341\277\274")), 'b,8188');
1543 is(join(',', unpack("aC/CU", "b\0\341\277\274")), 'b,8188');
1544 is(join(',', unpack("aU0C/UU", "b\0\341\277\274")), 'b,225');
1545 is(join(',', unpack("aU0C/CU", "b\0\341\277\274")), 'b,225');
1546 }
21c16052 1547}
f0df5f8b 1548
1549{
1550 # "Z0" (bug #34062)
1551 my (@x) = unpack("C*", pack("CZ0", 1, "b"));
1552 is(join(',', @x), '1', 'pack Z0 doesn\'t destroy the character before');
1553}
f337b084
TH
1554
1555{
1556 # Encoding neutrality
1557 # String we will pull apart and rebuild in several ways:
1558 my $down = "\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff\x05\x06";
1559 my $up = $down;
1560 utf8::upgrade($up);
1561
1562 my %expect =
1563 # [expected result,
1564 # how many chars it should progress,
1565 # (optional) expected result of pack]
1566 (a5 => ["\xf8\xf9\xfa\xfb\xfc", 5],
1567 A5 => ["\xf8\xf9\xfa\xfb\xfc", 5],
1568 Z5 => ["\xf8\xf9\xfa\xfb\xfc", 5, "\xf8\xf9\xfa\xfb\x00\xfd"],
1569 b21 => ["000111111001111101011", 3, "\xf8\xf9\x1a\xfb"],
1570 B21 => ["111110001111100111111", 3, "\xf8\xf9\xf8\xfb"],
1571 H5 => ["f8f9f", 3, "\xf8\xf9\xf0\xfb"],
1572 h5 => ["8f9fa", 3, "\xf8\xf9\x0a\xfb"],
1573 "s<" => [-1544, 2],
1574 "s>" => [-1799, 2],
1575 "S<" => [0xf9f8, 2],
1576 "S>" => [0xf8f9, 2],
1577 "l<" => [-67438088, 4],
1578 "l>" => [-117835013, 4],
1579 "L>" => [0xf8f9fafb, 4],
1580 "L<" => [0xfbfaf9f8, 4],
1581 n => [0xf8f9, 2],
1582 N => [0xf8f9fafb, 4],
1583 v => [63992, 2],
1584 V => [0xfbfaf9f8, 4],
1585 c => [-8, 1],
1586 U0U => [0xf8, 1],
1587 w => ["8715569050387726213", 9],
1588 q => ["-283686952306184", 8],
1589 Q => ["18446460386757245432", 8],
1590 );
1591
1592 for my $string ($down, $up) {
1593 for my $format (sort {lc($a) cmp lc($b) || $a cmp $b } keys %expect) {
1594 SKIP: {
1595 my $expect = $expect{$format};
1596 # unpack upgraded and downgraded string
1597 my @result = eval { unpack("$format C0 W", $string) };
1598 skip "cannot pack/unpack '$format C0 W' on this perl", 5 if
1599 $@ && is_valid_error($@);
1600 is(@result, 2, "Two results from unpack $format C0 W");
1601
1602 # pack to downgraded
1603 my $new = pack("$format C0 W", @result);
1604 is(length($new), $expect->[1]+1,
1605 "pack $format C0 W should give $expect->[1]+1 chars");
1606 is($new, $expect->[2] || substr($string, 0, length $new),
1607 "pack $format C0 W returns expected value");
1608
1609 # pack to upgraded
1610 $new = pack("a0 $format C0 W", chr(256), @result);
1611 is(length($new), $expect->[1]+1,
1612 "pack a0 $format C0 W should give $expect->[1]+1 chars");
1613 is($new, $expect->[2] || substr($string, 0, length $new),
1614 "pack a0 $format C0 W returns expected value");
1615 }
1616 }
1617 }
1618}
1619
1620{
1621 # Encoding neutrality, numbers
1622 my $val = -2.68;
1623 for my $format (qw(s S i I l L j J f d F D q Q
1624 s! S! i! I! l! L! n! N! v! V!)) {
1625 SKIP: {
1626 my $down = eval { pack($format, $val) };
1627 skip "cannot pack/unpack $format on this perl", 9 if
1628 $@ && is_valid_error($@);
1629 ok(!utf8::is_utf8($down), "Simple $format pack doesn't get upgraded");
1630 my $up = pack("a0 $format", chr(256), $val);
1631 ok(utf8::is_utf8($up), "a0 $format with high char leads to upgrade");
1632 is($down, $up, "$format generated strings are equal though");
1633 my @down_expanded = unpack("$format W", $down . chr(0xce));
1634 is(@down_expanded, 2, "Expand to two values");
1635 is($down_expanded[1], 0xce,
1636 "unpack $format left us at the expected position");
1637 my @up_expanded = unpack("$format W", $up . chr(0xce));
1638 is(@up_expanded, 2, "Expand to two values");
1639 is($up_expanded[1], 0xce,
1640 "unpack $format left us at the expected position");
1641 is($down_expanded[0], $up_expanded[0], "$format unpack was neutral");
1642 is(pack($format, $down_expanded[0]), $down, "Pack $format undoes unpack $format");
1643 }
1644 }
1645}
1646
1647{
1651fc44 1648 # C *is* neutral
f337b084
TH
1649 my $down = "\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff\x05\x06";
1650 my $up = $down;
1651 utf8::upgrade($up);
1652 my @down = unpack("C*", $down);
1653 my @expect_down = (0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, 0x05, 0x06);
1654 is("@down", "@expect_down", "byte expand");
1655 is(pack("C*", @down), $down, "byte join");
1656
1657 my @up = unpack("C*", $up);
1651fc44 1658 my @expect_up = (0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, 0x05, 0x06);
f337b084
TH
1659 is("@up", "@expect_up", "UTF-8 expand");
1660 is(pack("U0C0C*", @up), $up, "UTF-8 join");
1661}
1662
1663{
1664 # Harder cases for the neutrality test
1665
1666 # u format
1667 my $down = "\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff\x05\x06";
1668 my $up = $down;
1669 utf8::upgrade($up);
1670 is(pack("u", $down), pack("u", $up), "u pack is neutral");
1671 is(unpack("u", pack("u", $down)), $down, "u unpack to downgraded works");
1672 is(unpack("U0C0u", pack("u", $down)), $up, "u unpack to upgraded works");
1673
1674 # p/P format
1675 # This actually only tests something if the address contains a byte >= 0x80
1676 my $str = "abc\xa5\x00\xfede";
1677 $down = pack("p", $str);
1678 is(pack("P", $str), $down);
1679 is(pack("U0C0p", $str), $down);
1680 is(pack("U0C0P", $str), $down);
1681 is(unpack("p", $down), "abc\xa5", "unpack p downgraded");
1682 $up = $down;
1683 utf8::upgrade($up);
1684 is(unpack("p", $up), "abc\xa5", "unpack p upgraded");
1685
1686 is(unpack("P7", $down), "abc\xa5\x00\xfed", "unpack P downgraded");
1687 is(unpack("P7", $up), "abc\xa5\x00\xfed", "unpack P upgraded");
1688
1689 # x, X and @
1690 $down = "\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff\x05\x06";
1691 $up = $down;
1692 utf8::upgrade($up);
1693
1694 is(unpack('@4W', $down), 0xfc, "\@positioning on downgraded string");
1695 is(unpack('@4W', $up), 0xfc, "\@positioning on upgraded string");
1696
1697 is(unpack('@4x2W', $down), 0xfe, "x moving on downgraded string");
1698 is(unpack('@4x2W', $up), 0xfe, "x moving on upgraded string");
1699 is(unpack('@4x!4W', $down), 0xfc, "x! moving on downgraded string");
1700 is(unpack('@4x!4W', $up), 0xfc, "x! moving on upgraded string");
1701 is(unpack('@5x!4W', $down), 0x05, "x! moving on downgraded string");
1702 is(unpack('@5x!4W', $up), 0x05, "x! moving on upgraded string");
1703
1704 is(unpack('@4X2W', $down), 0xfa, "X moving on downgraded string");
1705 is(unpack('@4X2W', $up), 0xfa, "X moving on upgraded string");
1706 is(unpack('@4X!4W', $down), 0xfc, "X! moving on downgraded string");
1707 is(unpack('@4X!4W', $up), 0xfc, "X! moving on upgraded string");
1708 is(unpack('@5X!4W', $down), 0xfc, "X! moving on downgraded string");
1709 is(unpack('@5X!4W', $up), 0xfc, "X! moving on upgraded string");
1710 is(unpack('@5X!8W', $down), 0xf8, "X! moving on downgraded string");
1711 is(unpack('@5X!8W', $up), 0xf8, "X! moving on upgraded string");
1712
1713 is(pack("W2x", 0xfa, 0xe3), "\xfa\xe3\x00", "x on downgraded string");
28be1210 1714 is(pack("W2x!4", 0xfa, 0xe3), "\xfa\xe3\x00\x00",
f337b084
TH
1715 "x! on downgraded string");
1716 is(pack("W2x!2", 0xfa, 0xe3), "\xfa\xe3", "x! on downgraded string");
1717 is(pack("U0C0W2x", 0xfa, 0xe3), "\xfa\xe3\x00", "x on upgraded string");
28be1210 1718 is(pack("U0C0W2x!4", 0xfa, 0xe3), "\xfa\xe3\x00\x00",
f337b084
TH
1719 "x! on upgraded string");
1720 is(pack("U0C0W2x!2", 0xfa, 0xe3), "\xfa\xe3", "x! on upgraded string");
1721 is(pack("W2X", 0xfa, 0xe3), "\xfa", "X on downgraded string");
1722 is(pack("U0C0W2X", 0xfa, 0xe3), "\xfa", "X on upgraded string");
1723 is(pack("W2X!2", 0xfa, 0xe3), "\xfa\xe3", "X! on downgraded string");
1724 is(pack("U0C0W2X!2", 0xfa, 0xe3), "\xfa\xe3", "X! on upgraded string");
1725 is(pack("W3X!2", 0xfa, 0xe3, 0xa6), "\xfa\xe3", "X! on downgraded string");
28be1210 1726 is(pack("U0C0W3X!2", 0xfa, 0xe3, 0xa6), "\xfa\xe3",
f337b084
TH
1727 "X! on upgraded string");
1728
1729 # backward eating through a ( moves the group starting point backwards
28be1210 1730 is(pack("a*(Xa)", "abc", "q"), "abq",
f337b084 1731 "eating before strbeg moves it back");
28be1210 1732 is(pack("a*(Xa)", "ab" . chr(512), "q"), "abq",
f337b084
TH
1733 "eating before strbeg moves it back");
1734
1735 # Check marked_upgrade
1736 is(pack('W(W(Wa@3W)@6W)@9W', 0xa1, 0xa2, 0xa3, "a", 0xa4, 0xa5, 0xa6),
1737 "\xa1\xa2\xa3a\x00\xa4\x00\xa5\x00\xa6");
1738 $up = "a";
1739 utf8::upgrade($up);
1740 is(pack('W(W(Wa@3W)@6W)@9W', 0xa1, 0xa2, 0xa3, $up, 0xa4, 0xa5, 0xa6),
1741 "\xa1\xa2\xa3a\x00\xa4\x00\xa5\x00\xa6", "marked upgrade caused by a");
1742 is(pack('W(W(WW@3W)@6W)@9W', 0xa1, 0xa2, 0xa3, 256, 0xa4, 0xa5, 0xa6),
28be1210 1743 "\xa1\xa2\xa3\x{100}\x00\xa4\x00\xa5\x00\xa6",
f337b084
TH
1744 "marked upgrade caused by W");
1745 is(pack('W(W(WU0aC0@3W)@6W)@9W', 0xa1, 0xa2, 0xa3, "a", 0xa4, 0xa5, 0xa6),
1746 "\xa1\xa2\xa3a\x00\xa4\x00\xa5\x00\xa6", "marked upgrade caused by U0");
1747
1748 # a, A and Z
1749 $down = "\xa4\xa6\xa7";
1750 $up = $down;
1751 utf8::upgrade($up);
1752 utf8::upgrade(my $high = "\xfeb");
1753
1754 for my $format ("a0", "A0", "Z0", "U0a0C0", "U0A0C0", "U0Z0C0") {
28be1210 1755 is(pack("a* $format a*", "ab", $down, "cd"), "abcd",
f337b084
TH
1756 "$format format on plain string");
1757 is(pack("a* $format a*", "ab", $up, "cd"), "abcd",
1758 "$format format on upgraded string");
28be1210 1759 is(pack("a* $format a*", $high, $down, "cd"), "\xfebcd",
f337b084
TH
1760 "$format format on plain string");
1761 is(pack("a* $format a*", $high, $up, "cd"), "\xfebcd",
1762 "$format format on upgraded string");
1763 my @down = unpack("a1 $format a*", "\xfeb");
1764 is("@down", "\xfe b", "unpack $format");
1765 my @up = unpack("a1 $format a*", $high);
1766 is("@up", "\xfe b", "unpack $format");
1767 }
1768 is(pack("a1", $high), "\xfe");
1769 is(pack("A1", $high), "\xfe");
1770 is(pack("Z1", $high), "\x00");
1771 is(pack("a2", $high), "\xfeb");
1772 is(pack("A2", $high), "\xfeb");
1773 is(pack("Z2", $high), "\xfe\x00");
1774 is(pack("a5", $high), "\xfeb\x00\x00\x00");
1775 is(pack("A5", $high), "\xfeb ");
1776 is(pack("Z5", $high), "\xfeb\x00\x00\x00");
1777 is(pack("a*", $high), "\xfeb");
1778 is(pack("A*", $high), "\xfeb");
1779 is(pack("Z*", $high), "\xfeb\x00");
1780
1781 utf8::upgrade($high = "\xc3\xbeb");
1782 is(pack("U0a2", $high), "\xfe");
1783 is(pack("U0A2", $high), "\xfe");
1784 is(pack("U0Z1", $high), "\x00");
1785 is(pack("U0a3", $high), "\xfeb");
1786 is(pack("U0A3", $high), "\xfeb");
1787 is(pack("U0Z3", $high), "\xfe\x00");
1788 is(pack("U0a6", $high), "\xfeb\x00\x00\x00");
1789 is(pack("U0A6", $high), "\xfeb ");
1790 is(pack("U0Z6", $high), "\xfeb\x00\x00\x00");
1791 is(pack("U0a*", $high), "\xfeb");
1792 is(pack("U0A*", $high), "\xfeb");
1793 is(pack("U0Z*", $high), "\xfeb\x00");
1794}
246f24af
TH
1795{
1796 # pack /
1797 my @array = 1..14;
1798 my @out = unpack("N/S", pack("N/S", @array) . "abcd");
1799 is("@out", "@array", "pack N/S works");
1800 @out = unpack("N/S*", pack("N/S*", @array) . "abcd");
1801 is("@out", "@array", "pack N/S* works");
1802 @out = unpack("N/S*", pack("N/S14", @array) . "abcd");
1803 is("@out", "@array", "pack N/S14 works");
1804 @out = unpack("N/S*", pack("N/S15", @array) . "abcd");
1805 is("@out", "@array", "pack N/S15 works");
1806 @out = unpack("N/S*", pack("N/S13", @array) . "abcd");
1807 is("@out", "@array[0..12]", "pack N/S13 works");
1808 @out = unpack("N/S*", pack("N/S0", @array) . "abcd");
1809 is("@out", "", "pack N/S0 works");
1810 is(pack("Z*/a0", "abc"), "0\0", "pack Z*/a0 makes a short string");
1811 is(pack("Z*/Z0", "abc"), "0\0", "pack Z*/Z0 makes a short string");
1812 is(pack("Z*/a3", "abc"), "3\0abc", "pack Z*/a3 makes a full string");
1813 is(pack("Z*/Z3", "abc"), "3\0ab\0", "pack Z*/Z3 makes a short string");
1814 is(pack("Z*/a5", "abc"), "5\0abc\0\0", "pack Z*/a5 makes a long string");
1815 is(pack("Z*/Z5", "abc"), "5\0abc\0\0", "pack Z*/Z5 makes a long string");
1816 is(pack("Z*/Z"), "1\0\0", "pack Z*/Z makes an extended string");
1817 is(pack("Z*/Z", ""), "1\0\0", "pack Z*/Z makes an extended string");
1818 is(pack("Z*/a", ""), "0\0", "pack Z*/a makes an extended string");
1819}
18bdf90a
TH
1820{
1821 # unpack("A*", $unicode) strips general unicode spaces
28be1210 1822 is(unpack("A*", "ab \n\xa0 \0"), "ab \n\xa0",
18bdf90a 1823 'normal A* strip leaves \xa0');
28be1210 1824 is(unpack("U0C0A*", "ab \n\xa0 \0"), "ab \n\xa0",
18bdf90a
TH
1825 'normal A* strip leaves \xa0 even if it got upgraded for technical reasons');
1826 is(unpack("A*", pack("a*(U0U)a*", "ab \n", 0xa0, " \0")), "ab",
1827 'upgraded strings A* removes \xa0');
1828 is(unpack("A*", pack("a*(U0UU)a*", "ab \n", 0xa0, 0x1680, " \0")), "ab",
1829 'upgraded strings A* removes all unicode whitespace');
1830 is(unpack("A5", pack("a*(U0U)a*", "ab \n", 0x1680, "def", "ab")), "ab",
1831 'upgraded strings A5 removes all unicode whitespace');
1832 is(unpack("A*", pack("U", 0x1680)), "",
1833 'upgraded strings A* with nothing left');
1834}
28be1210
TH
1835{
1836 # Testing unpack . and .!
1837 is(unpack(".", "ABCD"), 0, "offset at start of string is 0");
1838 is(unpack(".", ""), 0, "offset at start of empty string is 0");
1839 is(unpack("x3.", "ABCDEF"), 3, "simple offset works");
1840 is(unpack("x3.", "ABC"), 3, "simple offset at end of string works");
1841 is(unpack("x3.0", "ABC"), 0, "self offset is 0");
1842 is(unpack("x3(x2.)", "ABCDEF"), 2, "offset is relative to inner group");
1843 is(unpack("x3(X2.)", "ABCDEF"), -2,
1844 "negative offset relative to inner group");
1845 is(unpack("x3(X2.2)", "ABCDEF"), 1, "offset is relative to inner group");
1846 is(unpack("x3(x2.0)", "ABCDEF"), 0, "self offset in group is still 0");
1847 is(unpack("x3(x2.2)", "ABCDEF"), 5, "offset counts groups");
1848 is(unpack("x3(x2.*)", "ABCDEF"), 5, "star offset is relative to start");
1849
1850 my $high = chr(8188) x 6;
1851 is(unpack("x3(x2.)", $high), 2, "utf8 offset is relative to inner group");
1852 is(unpack("x3(X2.)", $high), -2,
1853 "utf8 negative offset relative to inner group");
1854 is(unpack("x3(X2.2)", $high), 1, "utf8 offset counts groups");
1855 is(unpack("x3(x2.0)", $high), 0, "utf8 self offset in group is still 0");
1856 is(unpack("x3(x2.2)", $high), 5, "utf8 offset counts groups");
1857 is(unpack("x3(x2.*)", $high), 5, "utf8 star offset is relative to start");
1858
1859 is(unpack("U0x3(x2.)", $high), 2,
1860 "U0 mode utf8 offset is relative to inner group");
1861 is(unpack("U0x3(X2.)", $high), -2,
1862 "U0 mode utf8 negative offset relative to inner group");
1863 is(unpack("U0x3(X2.2)", $high), 1,
1864 "U0 mode utf8 offset counts groups");
1865 is(unpack("U0x3(x2.0)", $high), 0,
1866 "U0 mode utf8 self offset in group is still 0");
1867 is(unpack("U0x3(x2.2)", $high), 5,
1868 "U0 mode utf8 offset counts groups");
1869 is(unpack("U0x3(x2.*)", $high), 5,
1870 "U0 mode utf8 star offset is relative to start");
1871
1872 is(unpack("x3(x2.!)", $high), 2*3,
1873 "utf8 offset is relative to inner group");
1874 is(unpack("x3(X2.!)", $high), -2*3,
1875 "utf8 negative offset relative to inner group");
1876 is(unpack("x3(X2.!2)", $high), 1*3,
1877 "utf8 offset counts groups");
1878 is(unpack("x3(x2.!0)", $high), 0,
1879 "utf8 self offset in group is still 0");
1880 is(unpack("x3(x2.!2)", $high), 5*3,
1881 "utf8 offset counts groups");
1882 is(unpack("x3(x2.!*)", $high), 5*3,
1883 "utf8 star offset is relative to start");
1884
1885 is(unpack("U0x3(x2.!)", $high), 2,
1886 "U0 mode utf8 offset is relative to inner group");
1887 is(unpack("U0x3(X2.!)", $high), -2,
1888 "U0 mode utf8 negative offset relative to inner group");
1889 is(unpack("U0x3(X2.!2)", $high), 1,
1890 "U0 mode utf8 offset counts groups");
1891 is(unpack("U0x3(x2.!0)", $high), 0,
1892 "U0 mode utf8 self offset in group is still 0");
1893 is(unpack("U0x3(x2.!2)", $high), 5,
1894 "U0 mode utf8 offset counts groups");
1895 is(unpack("U0x3(x2.!*)", $high), 5,
1896 "U0 mode utf8 star offset is relative to start");
1897}
1898{
1899 # Testing pack . and .!
1900 is(pack("(a)5 .", 1..5, 3), "123", ". relative to string start, shorten");
1901 eval { () = pack("(a)5 .", 1..5, -3) };
1902 like($@, qr{'\.' outside of string in pack}, "Proper error message");
1903 is(pack("(a)5 .", 1..5, 8), "12345\x00\x00\x00",
1904 ". relative to string start, extend");
1905 is(pack("(a)5 .", 1..5, 5), "12345", ". relative to string start, keep");
1906
1907 is(pack("(a)5 .0", 1..5, -3), "12",
1908 ". relative to string current, shorten");
1909 is(pack("(a)5 .0", 1..5, 2), "12345\x00\x00",
1910 ". relative to string current, extend");
1911 is(pack("(a)5 .0", 1..5, 0), "12345",
1912 ". relative to string current, keep");
1913
1914 is(pack("(a)5 (.)", 1..5, -3), "12",
1915 ". relative to group, shorten");
1916 is(pack("(a)5 (.)", 1..5, 2), "12345\x00\x00",
1917 ". relative to group, extend");
1918 is(pack("(a)5 (.)", 1..5, 0), "12345",
1919 ". relative to group, keep");
1920
1921 is(pack("(a)3 ((a)2 .)", 1..5, -2), "1",
1922 ". relative to group, shorten");
1923 is(pack("(a)3 ((a)2 .)", 1..5, 2), "12345",
1924 ". relative to group, keep");
1925 is(pack("(a)3 ((a)2 .)", 1..5, 4), "12345\x00\x00",
1926 ". relative to group, extend");
1927
1928 is(pack("(a)3 ((a)2 .2)", 1..5, 2), "12",
1929 ". relative to counted group, shorten");
1930 is(pack("(a)3 ((a)2 .2)", 1..5, 7), "12345\x00\x00",
1931 ". relative to counted group, extend");
1932 is(pack("(a)3 ((a)2 .2)", 1..5, 5), "12345",
1933 ". relative to counted group, keep");
1934
1935 is(pack("(a)3 ((a)2 .*)", 1..5, 2), "12",
1936 ". relative to start, shorten");
1937 is(pack("(a)3 ((a)2 .*)", 1..5, 7), "12345\x00\x00",
1938 ". relative to start, extend");
1939 is(pack("(a)3 ((a)2 .*)", 1..5, 5), "12345",
1940 ". relative to start, keep");
1941
1942 is(pack('(a)5 (. @2 a)', 1..5, -3, "a"), "12\x00\x00a",
1943 ". based shrink properly updates group starts");
1944
1945 is(pack("(W)3 ((W)2 .)", 0x301..0x305, -2), "\x{301}",
1946 "utf8 . relative to group, shorten");
1947 is(pack("(W)3 ((W)2 .)", 0x301..0x305, 2),
1948 "\x{301}\x{302}\x{303}\x{304}\x{305}",
1949 "utf8 . relative to group, keep");
1950 is(pack("(W)3 ((W)2 .)", 0x301..0x305, 4),
1951 "\x{301}\x{302}\x{303}\x{304}\x{305}\x00\x00",
1952 "utf8 . relative to group, extend");
1953
1954 is(pack("(W)3 ((W)2 .!)", 0x301..0x305, -2), "\x{301}\x{302}",
1955 "utf8 . relative to group, shorten");
1956 is(pack("(W)3 ((W)2 .!)", 0x301..0x305, 4),
1957 "\x{301}\x{302}\x{303}\x{304}\x{305}",
1958 "utf8 . relative to group, keep");
1959 is(pack("(W)3 ((W)2 .!)", 0x301..0x305, 6),
1960 "\x{301}\x{302}\x{303}\x{304}\x{305}\x00\x00",
1961 "utf8 . relative to group, extend");
1962
1963 is(pack('(W)5 (. @2 a)', 0x301..0x305, -3, "a"),
1964 "\x{301}\x{302}\x00\x00a",
1965 "utf8 . based shrink properly updates group starts");
1966}
1967{
1968 # Testing @!
1969 is(pack('a* @3', "abcde"), "abc", 'Test basic @');
1970 is(pack('a* @!3', "abcde"), "abc", 'Test basic @!');
1971 is(pack('a* @2', "\x{301}\x{302}\x{303}\x{304}\x{305}"), "\x{301}\x{302}",
1972 'Test basic utf8 @');
1973 is(pack('a* @!2', "\x{301}\x{302}\x{303}\x{304}\x{305}"), "\x{301}",
1974 'Test basic utf8 @!');
1975
1976 is(unpack('@4 a*', "abcde"), "e", 'Test basic @');
1977 is(unpack('@!4 a*', "abcde"), "e", 'Test basic @!');
1978 is(unpack('@4 a*', "\x{301}\x{302}\x{303}\x{304}\x{305}"), "\x{305}",
1979 'Test basic utf8 @');
1980 is(unpack('@!4 a*', "\x{301}\x{302}\x{303}\x{304}\x{305}"),
1981 "\x{303}\x{304}\x{305}", 'Test basic utf8 @!');
1982}