Commit | Line | Data |
---|---|---|
b9894134 | 1 | #!./perl |
2 | ||
3 | # | |
4 | # various typeglob tests | |
5 | # | |
6 | ||
9f1b1f2d GS |
7 | BEGIN { |
8 | chdir 't' if -d 't'; | |
20822f61 | 9 | @INC = '../lib'; |
13be902c | 10 | require './test.pl'; |
98e007d4 | 11 | } |
9f1b1f2d GS |
12 | |
13 | use warnings; | |
14 | ||
b0d55c99 | 15 | plan( tests => 232 ); |
b9894134 | 16 | |
17 | # type coersion on assignment | |
18 | $foo = 'foo'; | |
19 | $bar = *main::foo; | |
20 | $bar = $foo; | |
98e007d4 | 21 | is(ref(\$bar), 'SCALAR'); |
b9894134 | 22 | $foo = *main::bar; |
23 | ||
24 | # type coersion (not) on misc ops | |
25 | ||
98e007d4 NC |
26 | ok($foo); |
27 | is(ref(\$foo), 'GLOB'); | |
b9894134 | 28 | |
98e007d4 NC |
29 | unlike ($foo, qr/abcd/); |
30 | is(ref(\$foo), 'GLOB'); | |
b9894134 | 31 | |
98e007d4 NC |
32 | is($foo, '*main::bar'); |
33 | is(ref(\$foo), 'GLOB'); | |
b9894134 | 34 | |
2acc3314 FC |
35 | { |
36 | no warnings; | |
37 | ${\*$foo} = undef; | |
38 | is(ref(\$foo), 'GLOB', 'no type coersion when assigning to *{} retval'); | |
39 | $::{phake} = *bar; | |
40 | is( | |
41 | \$::{phake}, \*{"phake"}, | |
42 | 'symbolic *{} returns symtab entry when FAKE' | |
43 | ); | |
44 | ${\*{"phake"}} = undef; | |
45 | is( | |
46 | ref(\$::{phake}), 'GLOB', | |
47 | 'no type coersion when assigning to retval of symbolic *{}' | |
48 | ); | |
49 | $::{phaque} = *bar; | |
50 | eval ' | |
51 | is( | |
52 | \$::{phaque}, \*phaque, | |
53 | "compile-time *{} returns symtab entry when FAKE" | |
54 | ); | |
55 | ${\*phaque} = undef; | |
56 | '; | |
57 | is( | |
58 | ref(\$::{phaque}), 'GLOB', | |
59 | 'no type coersion when assigning to retval of compile-time *{}' | |
60 | ); | |
61 | } | |
62 | ||
b9894134 | 63 | # type coersion on substitutions that match |
64 | $a = *main::foo; | |
65 | $b = $a; | |
66 | $a =~ s/^X//; | |
98e007d4 | 67 | is(ref(\$a), 'GLOB'); |
b9894134 | 68 | $a =~ s/^\*//; |
98e007d4 NC |
69 | is($a, 'main::foo'); |
70 | is(ref(\$b), 'GLOB'); | |
b9894134 | 71 | |
72 | # typeglobs as lvalues | |
73 | substr($foo, 0, 1) = "XXX"; | |
98e007d4 NC |
74 | is(ref(\$foo), 'SCALAR'); |
75 | is($foo, 'XXXmain::bar'); | |
b9894134 | 76 | |
77 | # returning glob values | |
78 | sub foo { | |
79 | local($bar) = *main::foo; | |
80 | $foo = *main::bar; | |
81 | return ($foo, $bar); | |
82 | } | |
83 | ||
84 | ($fuu, $baa) = foo(); | |
98e007d4 NC |
85 | ok(defined $fuu); |
86 | is(ref(\$fuu), 'GLOB'); | |
b9894134 | 87 | |
98e007d4 NC |
88 | |
89 | ok(defined $baa); | |
90 | is(ref(\$baa), 'GLOB'); | |
b9894134 | 91 | |
85aff577 CS |
92 | # nested package globs |
93 | # NOTE: It's probably OK if these semantics change, because the | |
94 | # fact that %X::Y:: is stored in %X:: isn't documented. | |
95 | # (I hope.) | |
96 | ||
9f1b1f2d | 97 | { package Foo::Bar; no warnings 'once'; $test=1; } |
98e007d4 NC |
98 | ok(exists $Foo::{'Bar::'}); |
99 | is($Foo::{'Bar::'}, '*Foo::Bar::'); | |
100 | ||
20408e3c GS |
101 | |
102 | # test undef operator clearing out entire glob | |
103 | $foo = 'stuff'; | |
104 | @foo = qw(more stuff); | |
105 | %foo = qw(even more random stuff); | |
106 | undef *foo; | |
98e007d4 NC |
107 | is ($foo, undef); |
108 | is (scalar @foo, 0); | |
109 | is (scalar %foo, 0); | |
20408e3c | 110 | |
20408e3c | 111 | { |
98e007d4 NC |
112 | # test warnings from assignment of undef to glob |
113 | my $msg = ''; | |
20408e3c | 114 | local $SIG{__WARN__} = sub { $msg = $_[0] }; |
9f1b1f2d | 115 | use warnings; |
20408e3c | 116 | *foo = 'bar'; |
98e007d4 | 117 | is($msg, ''); |
20408e3c | 118 | *foo = undef; |
98e007d4 | 119 | like($msg, qr/Undefined value assigned to typeglob/); |
e36cc0fb NC |
120 | |
121 | no warnings 'once'; | |
122 | # test warnings for converting globs to other forms | |
123 | my $copy = *PWOMPF; | |
124 | foreach ($copy, *SKREEE) { | |
125 | $msg = ''; | |
126 | my $victim = sprintf "%d", $_; | |
127 | like($msg, qr/Argument "\*main::[A-Z]{6}" isn't numeric in sprintf/, | |
128 | "Warning on conversion to IV"); | |
129 | is($victim, 0); | |
130 | ||
131 | $msg = ''; | |
132 | $victim = sprintf "%u", $_; | |
133 | like($msg, qr/Argument "\*main::[A-Z]{6}" isn't numeric in sprintf/, | |
134 | "Warning on conversion to UV"); | |
135 | is($victim, 0); | |
136 | ||
137 | $msg = ''; | |
138 | $victim = sprintf "%e", $_; | |
139 | like($msg, qr/Argument "\*main::[A-Z]{6}" isn't numeric in sprintf/, | |
140 | "Warning on conversion to NV"); | |
141 | like($victim, qr/^0\.0+E\+?00/i, "Expect floating point zero"); | |
142 | ||
143 | $msg = ''; | |
144 | $victim = sprintf "%s", $_; | |
145 | is($msg, '', "No warning on stringification"); | |
146 | is($victim, '' . $_); | |
147 | } | |
20408e3c | 148 | } |
640b9ef6 | 149 | |
98e007d4 | 150 | my $test = curr_test(); |
640b9ef6 | 151 | # test *glob{THING} syntax |
98e007d4 NC |
152 | $x = "ok $test\n"; |
153 | ++$test; | |
154 | @x = ("ok $test\n"); | |
155 | ++$test; | |
156 | %x = ("ok $test" => "\n"); | |
157 | ++$test; | |
158 | sub x { "ok $test\n" } | |
640b9ef6 | 159 | print ${*x{SCALAR}}, @{*x{ARRAY}}, %{*x{HASH}}, &{*x{CODE}}; |
98e007d4 NC |
160 | # This needs to go here, after the print, as sub x will return the current |
161 | # value of test | |
162 | ++$test; | |
f4d13ee9 | 163 | format x = |
98e007d4 | 164 | XXX This text isn't used. Should it be? |
f4d13ee9 | 165 | . |
98e007d4 NC |
166 | curr_test($test); |
167 | ||
168 | is (ref *x{FORMAT}, "FORMAT"); | |
640b9ef6 | 169 | *x = *STDOUT; |
98e007d4 | 170 | is (*{*x{GLOB}}, "*main::STDOUT"); |
39b99f21 | 171 | |
29a56bd6 | 172 | { |
98e007d4 NC |
173 | my $test = curr_test(); |
174 | ||
175 | print {*x{IO}} "ok $test\n"; | |
176 | ++$test; | |
177 | ||
178 | my $warn; | |
179 | local $SIG{__WARN__} = sub { | |
180 | $warn .= $_[0]; | |
181 | }; | |
182 | my $val = *x{FILEHANDLE}; | |
183 | print {*x{IO}} ($warn =~ /is deprecated/ | |
184 | ? "ok $test\n" : "not ok $test\n"); | |
185 | curr_test(++$test); | |
29a56bd6 JH |
186 | } |
187 | ||
35cd451c GS |
188 | |
189 | { | |
98e007d4 | 190 | # test if defined() doesn't create any new symbols |
35cd451c GS |
191 | |
192 | my $a = "SYM000"; | |
98e007d4 | 193 | ok(!defined *{$a}); |
35cd451c | 194 | |
98e007d4 NC |
195 | ok(!defined @{$a}); |
196 | ok(!defined *{$a}); | |
35cd451c | 197 | |
d47e1c27 NC |
198 | { |
199 | no warnings 'deprecated'; | |
200 | ok(!defined %{$a}); | |
201 | } | |
98e007d4 | 202 | ok(!defined *{$a}); |
35cd451c | 203 | |
98e007d4 NC |
204 | ok(!defined ${$a}); |
205 | ok(!defined *{$a}); | |
35cd451c | 206 | |
98e007d4 NC |
207 | ok(!defined &{$a}); |
208 | ok(!defined *{$a}); | |
35cd451c | 209 | |
98e007d4 NC |
210 | my $state = "not"; |
211 | *{$a} = sub { $state = "ok" }; | |
212 | ok(defined &{$a}); | |
213 | ok(defined *{$a}); | |
214 | &{$a}; | |
215 | is ($state, 'ok'); | |
35cd451c | 216 | } |
640b9ef6 | 217 | |
c9d5ac95 | 218 | { |
98e007d4 | 219 | # although it *should* if you're talking about magicals |
c9d5ac95 GS |
220 | |
221 | my $a = "]"; | |
98e007d4 NC |
222 | ok(defined ${$a}); |
223 | ok(defined *{$a}); | |
c9d5ac95 GS |
224 | |
225 | $a = "1"; | |
226 | "o" =~ /(o)/; | |
98e007d4 NC |
227 | ok(${$a}); |
228 | ok(defined *{$a}); | |
c9d5ac95 | 229 | $a = "2"; |
98e007d4 NC |
230 | ok(!${$a}); |
231 | ok(defined *{$a}); | |
c9d5ac95 | 232 | $a = "1x"; |
98e007d4 NC |
233 | ok(!defined ${$a}); |
234 | ok(!defined *{$a}); | |
c9d5ac95 GS |
235 | $a = "11"; |
236 | "o" =~ /(((((((((((o)))))))))))/; | |
98e007d4 NC |
237 | ok(${$a}); |
238 | ok(defined *{$a}); | |
c9d5ac95 GS |
239 | } |
240 | ||
bd2155e9 JH |
241 | # [ID 20010526.001] localized glob loses value when assigned to |
242 | ||
243 | $j=1; %j=(a=>1); @j=(1); local *j=*j; *j = sub{}; | |
244 | ||
98e007d4 NC |
245 | is($j, 1); |
246 | is($j{a}, 1); | |
247 | is($j[0], 1); | |
99491443 GS |
248 | |
249 | { | |
98e007d4 | 250 | # does pp_readline() handle glob-ness correctly? |
99491443 GS |
251 | my $g = *foo; |
252 | $g = <DATA>; | |
98e007d4 | 253 | is ($g, "Perl\n"); |
99491443 GS |
254 | } |
255 | ||
fb24441d RGS |
256 | { |
257 | my $w = ''; | |
bb112e5a | 258 | local $SIG{__WARN__} = sub { $w = $_[0] }; |
fb24441d RGS |
259 | sub abc1 (); |
260 | local *abc1 = sub { }; | |
98e007d4 | 261 | is ($w, ''); |
fb24441d RGS |
262 | sub abc2 (); |
263 | local *abc2; | |
264 | *abc2 = sub { }; | |
98e007d4 | 265 | is ($w, ''); |
fb24441d RGS |
266 | sub abc3 (); |
267 | *abc3 = sub { }; | |
98e007d4 | 268 | like ($w, qr/Prototype mismatch/); |
fb24441d RGS |
269 | } |
270 | ||
2b5e58c4 AMS |
271 | { |
272 | # [17375] rcatline to formerly-defined undef was broken. Fixed in | |
273 | # do_readline by checking SvOK. AMS, 20020918 | |
274 | my $x = "not "; | |
275 | $x = undef; | |
276 | $x .= <DATA>; | |
98e007d4 | 277 | is ($x, "Rules\n"); |
2b5e58c4 AMS |
278 | } |
279 | ||
4ce457a6 TP |
280 | { |
281 | # test the assignment of a GLOB to an LVALUE | |
282 | my $e = ''; | |
283 | local $SIG{__DIE__} = sub { $e = $_[0] }; | |
13be902c | 284 | my %v; |
4ce457a6 | 285 | sub f { $_[0] = 0; $_[0] = "a"; $_[0] = *DATA } |
13be902c FC |
286 | f($v{v}); |
287 | is ($v{v}, '*main::DATA'); | |
288 | is (ref\$v{v}, 'GLOB', 'lvalue assignment preserves globs'); | |
289 | my $x = readline $v{v}; | |
98e007d4 | 290 | is ($x, "perl\n"); |
4ce457a6 TP |
291 | } |
292 | ||
98e007d4 NC |
293 | { |
294 | $e = ''; | |
4ce457a6 TP |
295 | # GLOB assignment to tied element |
296 | local $SIG{__DIE__} = sub { $e = $_[0] }; | |
98e007d4 NC |
297 | sub T::TIEARRAY { bless [] => "T" } |
298 | sub T::STORE { $_[0]->[ $_[1] ] = $_[2] } | |
299 | sub T::FETCH { $_[0]->[ $_[1] ] } | |
300 | sub T::FETCHSIZE { @{$_[0]} } | |
4ce457a6 TP |
301 | tie my @ary => "T"; |
302 | $ary[0] = *DATA; | |
98e007d4 | 303 | is ($ary[0], '*main::DATA'); |
13be902c FC |
304 | is ( |
305 | ref\tied(@ary)->[0], 'GLOB', | |
306 | 'tied elem assignment preserves globs' | |
307 | ); | |
98e007d4 | 308 | is ($e, ''); |
4ce457a6 | 309 | my $x = readline $ary[0]; |
98e007d4 | 310 | is($x, "rocks\n"); |
4ce457a6 TP |
311 | } |
312 | ||
e15faf7d | 313 | { |
4184c77b NC |
314 | # Need some sort of die or warn to get the global destruction text if the |
315 | # bug is still present | |
5c2a9b31 | 316 | my $output = runperl(prog => <<'EOPROG'); |
e15faf7d | 317 | package M; |
5c2a9b31 | 318 | $| = 1; |
4184c77b | 319 | sub DESTROY {eval {die qq{Farewell $_[0]}}; print $@} |
e15faf7d NC |
320 | package main; |
321 | ||
3d7a9343 | 322 | bless \$A::B, q{M}; |
e15faf7d NC |
323 | *A:: = \*B::; |
324 | EOPROG | |
325 | like($output, qr/^Farewell M=SCALAR/, "DESTROY was called"); | |
326 | unlike($output, qr/global destruction/, | |
327 | "unreferenced symbol tables should be cleaned up immediately"); | |
328 | } | |
63fa9adc NC |
329 | |
330 | # Possibly not the correct test file for these tests. | |
331 | # There are certain space optimisations implemented via promotion rules to | |
332 | # GVs | |
333 | ||
bb112e5a NC |
334 | foreach (qw (oonk ga_shloip)) { |
335 | ok(!exists $::{$_}, "no symbols of any sort to start with for $_"); | |
336 | } | |
63fa9adc NC |
337 | |
338 | # A string in place of the typeglob is promoted to the function prototype | |
339 | $::{oonk} = "pie"; | |
340 | my $proto = eval 'prototype \&oonk'; | |
341 | die if $@; | |
342 | is ($proto, "pie", "String is promoted to prototype"); | |
343 | ||
344 | ||
345 | # A reference to a value is used to generate a constant subroutine | |
346 | foreach my $value (3, "Perl rules", \42, qr/whatever/, [1,2,3], {1=>2}, | |
5c1f4d79 | 347 | \*STDIN, \&ok, \undef, *STDOUT) { |
63fa9adc NC |
348 | delete $::{oonk}; |
349 | $::{oonk} = \$value; | |
350 | $proto = eval 'prototype \&oonk'; | |
351 | die if $@; | |
352 | is ($proto, '', "Prototype for a constant subroutine is empty"); | |
353 | ||
354 | my $got = eval 'oonk'; | |
355 | die if $@; | |
5c1f4d79 | 356 | is (ref $got, ref $value, "Correct type of value (" . ref($value) . ")"); |
63fa9adc NC |
357 | is ($got, $value, "Value is correctly set"); |
358 | } | |
5c1f4d79 | 359 | |
bb112e5a NC |
360 | delete $::{oonk}; |
361 | $::{oonk} = \"Value"; | |
362 | ||
363 | *{"ga_shloip"} = \&{"oonk"}; | |
364 | ||
365 | is (ref $::{ga_shloip}, 'SCALAR', "Export of proxy constant as is"); | |
366 | is (ref $::{oonk}, 'SCALAR', "Export doesn't affect original"); | |
367 | is (eval 'ga_shloip', "Value", "Constant has correct value"); | |
368 | is (ref $::{ga_shloip}, 'SCALAR', | |
93f09d7b | 369 | "Inlining of constant doesn't change representation"); |
bb112e5a NC |
370 | |
371 | delete $::{ga_shloip}; | |
372 | ||
373 | eval 'sub ga_shloip (); 1' or die $@; | |
374 | is ($::{ga_shloip}, '', "Prototype is stored as an empty string"); | |
375 | ||
376 | # Check that a prototype expands. | |
377 | *{"ga_shloip"} = \&{"oonk"}; | |
378 | ||
379 | is (ref $::{oonk}, 'SCALAR', "Export doesn't affect original"); | |
380 | is (eval 'ga_shloip', "Value", "Constant has correct value"); | |
381 | is (ref \$::{ga_shloip}, 'GLOB', "Symbol table has full typeglob"); | |
382 | ||
383 | ||
384 | @::zwot = ('Zwot!'); | |
385 | ||
386 | # Check that assignment to an existing typeglob works | |
387 | { | |
388 | my $w = ''; | |
389 | local $SIG{__WARN__} = sub { $w = $_[0] }; | |
390 | *{"zwot"} = \&{"oonk"}; | |
391 | is($w, '', "Should be no warning"); | |
392 | } | |
393 | ||
394 | is (ref $::{oonk}, 'SCALAR', "Export doesn't affect original"); | |
395 | is (eval 'zwot', "Value", "Constant has correct value"); | |
396 | is (ref \$::{zwot}, 'GLOB', "Symbol table has full typeglob"); | |
397 | is (join ('!', @::zwot), 'Zwot!', "Existing array still in typeglob"); | |
398 | ||
399 | sub spritsits () { | |
400 | "Traditional"; | |
401 | } | |
402 | ||
403 | # Check that assignment to an existing subroutine works | |
404 | { | |
405 | my $w = ''; | |
406 | local $SIG{__WARN__} = sub { $w = $_[0] }; | |
407 | *{"spritsits"} = \&{"oonk"}; | |
408 | like($w, qr/^Constant subroutine main::spritsits redefined/, | |
409 | "Redefining a constant sub should warn"); | |
410 | } | |
411 | ||
412 | is (ref $::{oonk}, 'SCALAR', "Export doesn't affect original"); | |
413 | is (eval 'spritsits', "Value", "Constant has correct value"); | |
414 | is (ref \$::{spritsits}, 'GLOB', "Symbol table has full typeglob"); | |
415 | ||
bb112e5a NC |
416 | # Check that assignment to an existing typeglob works |
417 | { | |
418 | my $w = ''; | |
419 | local $SIG{__WARN__} = sub { $w = $_[0] }; | |
50baa5ea VP |
420 | *{"plunk"} = []; |
421 | *{"plunk"} = \&{"oonk"}; | |
bb112e5a NC |
422 | is($w, '', "Should be no warning"); |
423 | } | |
424 | ||
bb112e5a NC |
425 | is (ref $::{oonk}, 'SCALAR', "Export doesn't affect original"); |
426 | is (eval 'plunk', "Value", "Constant has correct value"); | |
427 | is (ref \$::{plunk}, 'GLOB', "Symbol table has full typeglob"); | |
428 | ||
429 | my $gr = eval '\*plunk' or die; | |
430 | ||
431 | { | |
432 | my $w = ''; | |
433 | local $SIG{__WARN__} = sub { $w = $_[0] }; | |
50baa5ea | 434 | *{$gr} = \&{"oonk"}; |
2111d928 | 435 | is($w, '', "Redefining a constant sub to another constant sub with the same underlying value should not warn (It's just re-exporting, and that was always legal)"); |
bb112e5a NC |
436 | } |
437 | ||
438 | is (ref $::{oonk}, 'SCALAR', "Export doesn't affect original"); | |
439 | is (eval 'plunk', "Value", "Constant has correct value"); | |
440 | is (ref \$::{plunk}, 'GLOB', "Symbol table has full typeglob"); | |
441 | ||
50baa5ea VP |
442 | # Non-void context should defeat the optimisation, and will cause the original |
443 | # to be promoted (what change 26482 intended) | |
444 | my $result; | |
445 | { | |
446 | my $w = ''; | |
447 | local $SIG{__WARN__} = sub { $w = $_[0] }; | |
448 | $result = *{"awkkkkkk"} = \&{"oonk"}; | |
449 | is($w, '', "Should be no warning"); | |
450 | } | |
451 | ||
452 | is (ref \$result, 'GLOB', | |
453 | "Non void assignment should still return a typeglob"); | |
454 | ||
455 | is (ref \$::{oonk}, 'GLOB', "This export does affect original"); | |
456 | is (eval 'plunk', "Value", "Constant has correct value"); | |
457 | is (ref \$::{plunk}, 'GLOB', "Symbol table has full typeglob"); | |
458 | ||
459 | delete $::{oonk}; | |
460 | $::{oonk} = \"Value"; | |
461 | ||
462 | sub non_dangling { | |
463 | my $w = ''; | |
464 | local $SIG{__WARN__} = sub { $w = $_[0] }; | |
465 | *{"zap"} = \&{"oonk"}; | |
466 | is($w, '', "Should be no warning"); | |
467 | } | |
468 | ||
469 | non_dangling(); | |
470 | is (ref $::{oonk}, 'SCALAR', "Export doesn't affect original"); | |
471 | is (eval 'zap', "Value", "Constant has correct value"); | |
472 | is (ref $::{zap}, 'SCALAR', "Exported target is also a PCS"); | |
473 | ||
474 | sub dangling { | |
475 | local $SIG{__WARN__} = sub { die $_[0] }; | |
476 | *{"biff"} = \&{"oonk"}; | |
477 | } | |
478 | ||
479 | dangling(); | |
480 | is (ref \$::{oonk}, 'GLOB', "This export does affect original"); | |
481 | is (eval 'biff', "Value", "Constant has correct value"); | |
482 | is (ref \$::{biff}, 'GLOB', "Symbol table has full typeglob"); | |
483 | ||
acaa9288 NC |
484 | { |
485 | use vars qw($glook $smek $foof); | |
486 | # Check reference assignment isn't affected by the SV type (bug #38439) | |
487 | $glook = 3; | |
488 | $smek = 4; | |
489 | $foof = "halt and cool down"; | |
490 | ||
491 | my $rv = \*smek; | |
492 | is($glook, 3); | |
493 | *glook = $rv; | |
494 | is($glook, 4); | |
495 | ||
496 | my $pv = ""; | |
497 | $pv = \*smek; | |
498 | is($foof, "halt and cool down"); | |
499 | *foof = $pv; | |
500 | is($foof, 4); | |
501 | } | |
502 | ||
5c1f4d79 NC |
503 | format = |
504 | . | |
505 | ||
506 | foreach my $value ([1,2,3], {1=>2}, *STDOUT{IO}, \&ok, *STDOUT{FORMAT}) { | |
507 | # *STDOUT{IO} returns a reference to a PVIO. As it's blessed, ref returns | |
508 | # IO::Handle, which isn't what we want. | |
509 | my $type = $value; | |
510 | $type =~ s/.*=//; | |
511 | $type =~ s/\(.*//; | |
512 | delete $::{oonk}; | |
513 | $::{oonk} = $value; | |
514 | $proto = eval 'prototype \&oonk'; | |
515 | like ($@, qr/^Cannot convert a reference to $type to typeglob/, | |
516 | "Cannot upgrade ref-to-$type to typeglob"); | |
517 | } | |
f9d52e31 NC |
518 | |
519 | { | |
520 | no warnings qw(once uninitialized); | |
521 | my $g = \*clatter; | |
522 | my $r = eval {no strict; ${*{$g}{SCALAR}}}; | |
523 | is ($@, '', "PERL_DONT_CREATE_GVSV shouldn't affect thingy syntax"); | |
524 | ||
525 | $g = \*vowm; | |
526 | $r = eval {use strict; ${*{$g}{SCALAR}}}; | |
527 | is ($@, '', | |
528 | "PERL_DONT_CREATE_GVSV shouldn't affect thingy syntax under strict"); | |
529 | } | |
530 | ||
06be3b40 NC |
531 | { |
532 | # Bug reported by broquaint on IRC | |
533 | *slosh::{HASH}->{ISA}=[]; | |
534 | slosh->import; | |
535 | pass("gv_fetchmeth coped with the unexpected"); | |
9e0d86f8 NC |
536 | |
537 | # An audit found these: | |
538 | { | |
539 | package slosh; | |
540 | sub rip { | |
541 | my $s = shift; | |
542 | $s->SUPER::rip; | |
543 | } | |
544 | } | |
545 | eval {slosh->rip;}; | |
546 | like ($@, qr/^Can't locate object method "rip"/, "Even with SUPER"); | |
547 | ||
548 | is(slosh->isa('swoosh'), ''); | |
549 | ||
550 | $CORE::GLOBAL::{"lock"}=[]; | |
551 | eval "no warnings; lock"; | |
552 | like($@, qr/^Not enough arguments for lock/, | |
553 | "Can't trip up general keyword overloading"); | |
554 | ||
555 | $CORE::GLOBAL::{"readline"}=[]; | |
b3c9268e | 556 | eval "<STDOUT> if 0"; |
9e0d86f8 | 557 | is($@, '', "Can't trip up readline overloading"); |
d5e716f5 NC |
558 | |
559 | $CORE::GLOBAL::{"readpipe"}=[]; | |
560 | eval "`` if 0"; | |
561 | is($@, '', "Can't trip up readpipe overloading"); | |
06be3b40 | 562 | } |
53a42478 NC |
563 | |
564 | { | |
565 | die if exists $::{BONK}; | |
566 | $::{BONK} = \"powie"; | |
567 | *{"BONK"} = \&{"BONK"}; | |
568 | eval 'is(BONK(), "powie", | |
93f09d7b | 569 | "Assignment works when glob created midway (bug 45607)"); 1' |
53a42478 NC |
570 | or die $@; |
571 | } | |
1f257c95 NC |
572 | |
573 | # For now these tests are here, but they would probably be better in a file for | |
574 | # tests for croaks. (And in turn, that probably deserves to be in a different | |
575 | # directory. Gerard Goossen has a point about the layout being unclear | |
576 | ||
577 | sub coerce_integer { | |
578 | no warnings 'numeric'; | |
579 | $_[0] |= 0; | |
580 | } | |
581 | sub coerce_number { | |
582 | no warnings 'numeric'; | |
583 | $_[0] += 0; | |
584 | } | |
585 | sub coerce_string { | |
586 | $_[0] .= ''; | |
587 | } | |
588 | ||
589 | foreach my $type (qw(integer number string)) { | |
590 | my $prog = "coerce_$type(*STDERR)"; | |
591 | is (scalar eval "$prog; 1", undef, "$prog failed..."); | |
592 | like ($@, qr/Can't coerce GLOB to $type in/, | |
593 | "with the correct error message"); | |
594 | } | |
595 | ||
1809c940 DM |
596 | # RT #60954 anonymous glob should be defined, and not coredump when |
597 | # stringified. The behaviours are: | |
598 | # | |
599 | # defined($glob) "$glob" | |
600 | # 5.8.8 false "" with uninit warning | |
601 | # 5.10.0 true (coredump) | |
602 | # 5.12.0 true "" | |
603 | ||
604 | { | |
605 | my $io_ref = *STDOUT{IO}; | |
606 | my $glob = *$io_ref; | |
607 | ok(defined $glob, "RT #60954 anon glob should be defined"); | |
608 | ||
609 | my $warn = ''; | |
610 | local $SIG{__WARN__} = sub { $warn = $_[0] }; | |
611 | use warnings; | |
612 | my $str = "$glob"; | |
93f09d7b | 613 | is($warn, '', "RT #60954 anon glob stringification shouldn't warn"); |
1809c940 DM |
614 | is($str, '', "RT #60954 anon glob stringification should be empty"); |
615 | } | |
616 | ||
1f730e6c FC |
617 | # [perl #71254] - Assigning a glob to a variable that has a current |
618 | # match position. (We are testing that Perl_magic_setmglob respects globs' | |
619 | # special used of SvSCREAM.) | |
620 | { | |
621 | $m = 2; $m=~s/./0/gems; $m= *STDERR; | |
622 | is( | |
623 | "$m", "*main::STDERR", | |
624 | '[perl #71254] assignment of globs to vars with pos' | |
625 | ); | |
626 | } | |
627 | ||
2867cdbc Z |
628 | # [perl #72740] - indirect object syntax, heuristically imputed due to |
629 | # the non-existence of a function, should not cause a stash entry to be | |
630 | # created for the non-existent function. | |
631 | { | |
632 | package RT72740a; | |
633 | my $f = bless({}, RT72740b); | |
634 | sub s1 { s2 $f; } | |
635 | our $s4; | |
636 | sub s3 { s4 $f; } | |
637 | } | |
638 | { | |
639 | package RT72740b; | |
640 | sub s2 { "RT72740b::s2" } | |
641 | sub s4 { "RT72740b::s4" } | |
642 | } | |
643 | ok(exists($RT72740a::{s1}), "RT72740a::s1 exists"); | |
644 | ok(!exists($RT72740a::{s2}), "RT72740a::s2 does not exist"); | |
645 | ok(exists($RT72740a::{s3}), "RT72740a::s3 exists"); | |
646 | ok(exists($RT72740a::{s4}), "RT72740a::s4 exists"); | |
647 | is(RT72740a::s1(), "RT72740b::s2", "RT72740::s1 parsed correctly"); | |
648 | is(RT72740a::s3(), "RT72740b::s4", "RT72740::s3 parsed correctly"); | |
649 | ||
b9e00b79 LR |
650 | # [perl #71686] Globs that are in symbol table can be un-globbed |
651 | $sym = undef; | |
652 | $::{fake} = *sym; | |
653 | is (eval 'local *::fake = \"chuck"; $fake', 'chuck', | |
654 | "Localized glob didn't coerce into a RV"); | |
655 | is ($@, '', "Can localize FAKE glob that's present in stash"); | |
656 | is (scalar $::{fake}, "*main::sym", | |
657 | "Localized FAKE glob's value was correctly restored"); | |
658 | ||
0fe688f5 | 659 | # [perl #1804] *$x assignment when $x is a copy of another glob |
0095ccd4 | 660 | # And [perl #77508] (same thing with list assignment) |
0fe688f5 FC |
661 | { |
662 | no warnings 'once'; | |
663 | my $x = *_random::glob_that_is_not_used_elsewhere; | |
664 | *$x = sub{}; | |
665 | is( | |
666 | "$x", '*_random::glob_that_is_not_used_elsewhere', | |
667 | '[perl #1804] *$x assignment when $x is FAKE', | |
668 | ); | |
0095ccd4 FC |
669 | $x = *_random::glob_that_is_not_used_elsewhere; |
670 | (my $dummy, *$x) = (undef,[]); | |
671 | is( | |
672 | "$x", '*_random::glob_that_is_not_used_elsewhere', | |
673 | '[perl #77508] *$x list assignment when $x is FAKE', | |
674 | ) or require Devel::Peek, Devel::Peek::Dump($x); | |
0fe688f5 FC |
675 | } |
676 | ||
cf203c62 FR |
677 | # [perl #76540] |
678 | # this caused panics or 'Attempt to free unreferenced scalar' | |
679 | # (its a compile-time issue, so the die lets us skip the prints) | |
680 | { | |
681 | my @warnings; | |
682 | local $SIG{__WARN__} = sub { push @warnings, @_ }; | |
683 | ||
684 | eval <<'EOF'; | |
685 | BEGIN { $::{FOO} = \'bar' } | |
686 | die "made it"; | |
687 | print FOO, "\n"; | |
688 | print FOO, "\n"; | |
689 | EOF | |
690 | ||
691 | like($@, qr/made it/, "#76540 - no panic"); | |
692 | ok(!@warnings, "#76540 - no 'Attempt to free unreferenced scalar'"); | |
693 | } | |
694 | ||
13be902c FC |
695 | # [perl #77362] various bugs related to globs as PVLVs |
696 | { | |
697 | no warnings qw 'once void'; | |
698 | my %h; # We pass a key of this hash to the subroutine to get a PVLV. | |
699 | sub { for(shift) { | |
700 | # Set up our glob-as-PVLV | |
701 | $_ = *hon; | |
702 | ||
703 | # Bad symbol for array | |
704 | ok eval{ @$_; 1 }, 'PVLV glob slots can be autovivified' or diag $@; | |
705 | ||
706 | # This should call TIEHANDLE, not TIESCALAR | |
707 | *thext::TIEHANDLE = sub{}; | |
708 | ok eval{ tie *$_, 'thext'; 1 }, 'PVLV globs can be tied as handles' | |
709 | or diag $@; | |
710 | ||
711 | # Assigning undef to the glob should not overwrite it... | |
712 | { | |
713 | my $w; | |
714 | local $SIG{__WARN__} = sub { $w = shift }; | |
715 | *$_ = undef; | |
716 | is $_, "*main::hon", 'PVLV: assigning undef to the glob does nothing'; | |
717 | like $w, qr\Undefined value assigned to typeglob\, | |
718 | 'PVLV: assigning undef to the glob warns'; | |
719 | } | |
720 | ||
2acc3314 | 721 | # Neither should reference assignment. |
13be902c | 722 | *$_ = []; |
2acc3314 | 723 | is $_, "*main::hon", "PVLV: arrayref assignment assigns to the AV slot"; |
13be902c FC |
724 | |
725 | # Concatenation should still work. | |
726 | ok eval { $_ .= 'thlew' }, 'PVLV concatenation does not die' or diag $@; | |
2acc3314 | 727 | is $_, '*main::honthlew', 'PVLV concatenation works'; |
13be902c FC |
728 | |
729 | # And we should be able to overwrite it with a string, number, or refer- | |
730 | # ence, too, if we omit the *. | |
731 | $_ = *hon; $_ = 'tzor'; | |
732 | is $_, 'tzor', 'PVLV: assigning a string over a glob'; | |
733 | $_ = *hon; $_ = 23; | |
734 | is $_, 23, 'PVLV: assigning an integer over a glob'; | |
735 | $_ = *hon; $_ = 23.23; | |
736 | is $_, 23.23, 'PVLV: assigning a float over a glob'; | |
737 | $_ = *hon; $_ = \my $sthat; | |
738 | is $_, \$sthat, 'PVLV: assigning a reference over a glob'; | |
739 | ||
740 | # This bug was found by code inspection. Could this ever happen in | |
741 | # real life? :-) | |
742 | # This duplicates a file handle, accessing it through a PVLV glob, the | |
743 | # glob having been removed from the symbol table, so a stringified form | |
744 | # of it does not work. This checks that sv_2io does not stringify a PVLV. | |
745 | $_ = *quin; | |
746 | open *quin, "test.pl"; # test.pl is as good a file as any | |
747 | delete $::{quin}; | |
748 | ok eval { open my $zow, "<&", $_ }, 'PVLV: sv_2io stringifieth not' | |
749 | or diag $@; | |
750 | ||
751 | # Similar tests to make sure sv_2cv etc. do not stringify. | |
752 | *$_ = sub { 1 }; | |
753 | ok eval { &$_ }, "PVLV glob can be called as a sub" or diag $@; | |
754 | *flelp = sub { 2 }; | |
755 | $_ = 'flelp'; | |
756 | is eval { &$_ }, 2, 'PVLV holding a string can be called as a sub' | |
757 | or diag $@; | |
758 | ||
759 | # Coderef-to-glob assignment when the glob is no longer accessible | |
760 | # under its name: These tests are to make sure the OPpASSIGN_CV_TO_GV | |
761 | # optimisation takes PVLVs into account, which is why the RHSs have to be | |
762 | # named subs. | |
763 | use constant gheen => 'quare'; | |
764 | $_ = *ming; | |
765 | delete $::{ming}; | |
766 | *$_ = \&gheen; | |
767 | is eval { &$_ }, 'quare', | |
768 | 'PVLV: constant assignment when the glob is detached from the symtab' | |
769 | or diag $@; | |
770 | $_ = *bength; | |
771 | delete $::{bength}; | |
772 | *gheck = sub { 'lon' }; | |
773 | *$_ = \&gheck; | |
774 | is eval { &$_ }, 'lon', | |
775 | 'PVLV: coderef assignment when the glob is detached from the symtab' | |
776 | or diag $@; | |
777 | ||
778 | # open should accept a PVLV as its first argument | |
779 | $_ = *hon; | |
780 | ok eval { open $_,'<', \my $thlext }, 'PVLV can be the first arg to open' | |
781 | or diag $@; | |
782 | ||
783 | # -t should not stringify | |
784 | $_ = *thlit; delete $::{thlit}; | |
785 | *$_ = *STDOUT{IO}; | |
786 | ok defined -t $_, 'PVLV: -t does not stringify'; | |
787 | ||
788 | # neither should -T | |
804401ea FC |
789 | # but some systems don’t support this on file handles |
790 | my $pass; | |
791 | ok | |
792 | eval { | |
793 | open my $quile, "<", 'test.pl'; | |
794 | $_ = *$quile; | |
795 | $pass = -T $_; | |
796 | 1 | |
797 | } ? $pass : $@ =~ /not implemented on filehandles/, | |
798 | "PVLV: -T does not stringify"; | |
13be902c FC |
799 | |
800 | # Unopened file handle | |
801 | { | |
802 | my $w; | |
803 | local $SIG{__WARN__} = sub { $w .= shift }; | |
804 | $_ = *vor; | |
805 | close $_; | |
806 | like $w, qr\unopened filehandle vor\, | |
807 | 'PVLV globs get their names reported in unopened error messages'; | |
808 | } | |
809 | ||
810 | }}->($h{k}); | |
811 | } | |
812 | ||
251c9b20 NC |
813 | *aieee = 4; |
814 | pass('Can assign integers to typeglobs'); | |
815 | *aieee = 3.14; | |
816 | pass('Can assign floats to typeglobs'); | |
817 | *aieee = 'pi'; | |
818 | pass('Can assign strings to typeglobs'); | |
819 | ||
0936ef8b FC |
820 | { |
821 | package thrext; | |
822 | sub TIESCALAR{bless[]} | |
823 | sub STORE{ die "No!"} | |
824 | sub FETCH{ no warnings 'once'; *thrit } | |
825 | tie my $a, "thrext"; | |
826 | () = "$a"; # do a fetch; now $a holds a glob | |
827 | eval { *$a = sub{} }; | |
6cd32d3b | 828 | eval { $a = undef }; # workaround for untie($handle) bug |
0936ef8b FC |
829 | untie $a; |
830 | eval { $a = "bar" }; | |
831 | ::is $a, "bar", | |
832 | "[perl #77812] Globs in tied scalars can be reified if STORE dies" | |
833 | } | |
834 | ||
8d33f848 FC |
835 | # These two crashed prior to 5.13.6. In 5.13.6 they were fatal errors. They |
836 | # were fixed in 5.13.7. | |
837 | ok eval { | |
838 | my $glob = \*heen::ISA; | |
839 | delete $::{"heen::"}; | |
840 | *$glob = *bar; | |
841 | }, "glob-to-*ISA assignment works when *ISA has lost its stash"; | |
842 | ok eval { | |
843 | my $glob = \*slare::ISA; | |
844 | delete $::{"slare::"}; | |
845 | *$glob = []; | |
846 | }, "array-to-*ISA assignment works when *ISA has lost its stash"; | |
847 | # These two crashed in 5.13.6. They were likewise fixed in 5.13.7. | |
848 | ok eval { | |
849 | sub greck; | |
4a68a320 | 850 | my $glob = do { no warnings "once"; \*phing::foo}; |
8d33f848 FC |
851 | delete $::{"phing::"}; |
852 | *$glob = *greck; | |
853 | }, "Assigning a glob-with-sub to a glob that has lost its stash warks"; | |
854 | ok eval { | |
855 | sub pon::foo; | |
856 | my $glob = \*pon::foo; | |
857 | delete $::{"pon::"}; | |
858 | *$glob = *foo; | |
859 | }, "Assigning a glob to a glob-with-sub that has lost its stash warks"; | |
860 | ||
d8906c05 FC |
861 | { |
862 | package Tie::Alias; | |
863 | sub TIESCALAR{ bless \\pop } | |
864 | sub FETCH { $${$_[0]} } | |
865 | sub STORE { $${$_[0]} = $_[1] } | |
866 | package main; | |
867 | tie my $alias, 'Tie::Alias', my $var; | |
868 | no warnings 'once'; | |
869 | $var = *galobbe; | |
870 | { | |
871 | local *$alias = []; | |
872 | $var = 3; | |
873 | is $alias, 3, "[perl #77926] Glob reification during localisation"; | |
874 | } | |
875 | } | |
8d33f848 | 876 | |
b0d55c99 FC |
877 | # This code causes gp_free to call a destructor when a glob is being |
878 | # restored on scope exit. The destructor used to see SVs with a refcount of | |
879 | # zero inside the glob, which could result in crashes (though not in this | |
880 | # test case, which just panics). | |
881 | { | |
882 | no warnings 'once'; | |
883 | my $survived; | |
884 | *Trit::DESTROY = sub { | |
885 | $thwext = 42; # panic | |
886 | $survived = 1; | |
887 | }; | |
888 | { | |
889 | local *thwext; | |
890 | $thwext = bless[],'Trit'; | |
891 | (); | |
892 | } | |
893 | ok $survived, | |
894 | 'no error when gp_free calls a destructor that assigns to the gv'; | |
895 | } | |
896 | ||
99491443 | 897 | __END__ |
98e007d4 NC |
898 | Perl |
899 | Rules | |
900 | perl | |
901 | rocks |