Commit | Line | Data |
---|---|---|
b9894134 | 1 | #!./perl |
2 | ||
3 | # | |
4 | # various typeglob tests | |
5 | # | |
6 | ||
9f1b1f2d GS |
7 | BEGIN { |
8 | chdir 't' if -d 't'; | |
13be902c | 9 | require './test.pl'; |
43ece5b1 | 10 | set_up_inc('../lib'); |
98e007d4 | 11 | } |
9f1b1f2d GS |
12 | |
13 | use warnings; | |
14 | ||
3c62f09f | 15 | plan(tests => 276 ); |
b9894134 | 16 | |
cfffe6dc | 17 | # type coercion on assignment |
b9894134 | 18 | $foo = 'foo'; |
19 | $bar = *main::foo; | |
20 | $bar = $foo; | |
98e007d4 | 21 | is(ref(\$bar), 'SCALAR'); |
b9894134 | 22 | $foo = *main::bar; |
23 | ||
cfffe6dc | 24 | # type coercion (not) on misc ops |
b9894134 | 25 | |
98e007d4 NC |
26 | ok($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; | |
cfffe6dc | 38 | is(ref(\$foo), 'GLOB', 'no type coercion when assigning to *{} retval'); |
2acc3314 FC |
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', | |
cfffe6dc | 47 | 'no type coercion when assigning to retval of symbolic *{}' |
2acc3314 FC |
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', | |
cfffe6dc | 59 | 'no type coercion when assigning to retval of compile-time *{}' |
2acc3314 FC |
60 | ); |
61 | } | |
62 | ||
cfffe6dc | 63 | # type coercion on substitutions that match |
b9894134 | 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"); | |
e14698d8 FC |
169 | is ("@{sub { *_{ARRAY} }->(1..3)}", "1 2 3", |
170 | 'returning *_{ARRAY} from sub'); | |
640b9ef6 | 171 | *x = *STDOUT; |
98e007d4 | 172 | is (*{*x{GLOB}}, "*main::STDOUT"); |
39b99f21 | 173 | |
29a56bd6 | 174 | { |
98e007d4 NC |
175 | my $test = curr_test(); |
176 | ||
177 | print {*x{IO}} "ok $test\n"; | |
178 | ++$test; | |
179 | ||
180 | my $warn; | |
181 | local $SIG{__WARN__} = sub { | |
182 | $warn .= $_[0]; | |
183 | }; | |
184 | my $val = *x{FILEHANDLE}; | |
185 | print {*x{IO}} ($warn =~ /is deprecated/ | |
186 | ? "ok $test\n" : "not ok $test\n"); | |
187 | curr_test(++$test); | |
29a56bd6 JH |
188 | } |
189 | ||
171e2879 FC |
190 | is *x{NAME}, 'x', '*foo{NAME}'; |
191 | is *x{PACKAGE}, 'main', '*foo{PACKAGE}'; | |
0787e289 | 192 | { no warnings 'once'; *x = *Foo::y; } |
4fbc7258 FC |
193 | is *x, '*Foo::y', 'glob stringifies as assignee after glob-to-glob assign'; |
194 | is *x{NAME}, 'x', 'but *foo{NAME} still returns the original name'; | |
195 | is *x{PACKAGE}, 'main', 'and *foo{PACKAGE} the original package'; | |
35cd451c GS |
196 | |
197 | { | |
98e007d4 | 198 | # test if defined() doesn't create any new symbols |
35cd451c GS |
199 | |
200 | my $a = "SYM000"; | |
98e007d4 | 201 | ok(!defined *{$a}); |
35cd451c | 202 | |
98e007d4 NC |
203 | ok(!defined ${$a}); |
204 | ok(!defined *{$a}); | |
35cd451c | 205 | |
98e007d4 NC |
206 | ok(!defined &{$a}); |
207 | ok(!defined *{$a}); | |
35cd451c | 208 | |
98e007d4 NC |
209 | my $state = "not"; |
210 | *{$a} = sub { $state = "ok" }; | |
211 | ok(defined &{$a}); | |
212 | ok(defined *{$a}); | |
213 | &{$a}; | |
214 | is ($state, 'ok'); | |
35cd451c | 215 | } |
640b9ef6 | 216 | |
c9d5ac95 | 217 | { |
98e007d4 | 218 | # although it *should* if you're talking about magicals |
c9d5ac95 GS |
219 | |
220 | my $a = "]"; | |
98e007d4 | 221 | ok(defined *{$a}); |
82587197 | 222 | ok(defined ${$a}); |
c9d5ac95 GS |
223 | |
224 | $a = "1"; | |
225 | "o" =~ /(o)/; | |
98e007d4 NC |
226 | ok(${$a}); |
227 | ok(defined *{$a}); | |
c9d5ac95 | 228 | $a = "2"; |
98e007d4 NC |
229 | ok(!${$a}); |
230 | ok(defined *{$a}); | |
c9d5ac95 | 231 | $a = "1x"; |
98e007d4 NC |
232 | ok(!defined ${$a}); |
233 | ok(!defined *{$a}); | |
c9d5ac95 GS |
234 | $a = "11"; |
235 | "o" =~ /(((((((((((o)))))))))))/; | |
98e007d4 NC |
236 | ok(${$a}); |
237 | ok(defined *{$a}); | |
c9d5ac95 GS |
238 | } |
239 | ||
bd2155e9 JH |
240 | # [ID 20010526.001] localized glob loses value when assigned to |
241 | ||
242 | $j=1; %j=(a=>1); @j=(1); local *j=*j; *j = sub{}; | |
243 | ||
98e007d4 NC |
244 | is($j, 1); |
245 | is($j{a}, 1); | |
246 | is($j[0], 1); | |
99491443 GS |
247 | |
248 | { | |
98e007d4 | 249 | # does pp_readline() handle glob-ness correctly? |
99491443 GS |
250 | my $g = *foo; |
251 | $g = <DATA>; | |
98e007d4 | 252 | is ($g, "Perl\n"); |
99491443 GS |
253 | } |
254 | ||
fb24441d RGS |
255 | { |
256 | my $w = ''; | |
bb112e5a | 257 | local $SIG{__WARN__} = sub { $w = $_[0] }; |
fb24441d RGS |
258 | sub abc1 (); |
259 | local *abc1 = sub { }; | |
98e007d4 | 260 | is ($w, ''); |
fb24441d RGS |
261 | sub abc2 (); |
262 | local *abc2; | |
263 | *abc2 = sub { }; | |
98e007d4 | 264 | is ($w, ''); |
fb24441d RGS |
265 | sub abc3 (); |
266 | *abc3 = sub { }; | |
98e007d4 | 267 | like ($w, qr/Prototype mismatch/); |
fb24441d RGS |
268 | } |
269 | ||
2b5e58c4 AMS |
270 | { |
271 | # [17375] rcatline to formerly-defined undef was broken. Fixed in | |
272 | # do_readline by checking SvOK. AMS, 20020918 | |
273 | my $x = "not "; | |
274 | $x = undef; | |
275 | $x .= <DATA>; | |
98e007d4 | 276 | is ($x, "Rules\n"); |
2b5e58c4 AMS |
277 | } |
278 | ||
4ce457a6 TP |
279 | { |
280 | # test the assignment of a GLOB to an LVALUE | |
281 | my $e = ''; | |
282 | local $SIG{__DIE__} = sub { $e = $_[0] }; | |
13be902c | 283 | my %v; |
4ce457a6 | 284 | sub f { $_[0] = 0; $_[0] = "a"; $_[0] = *DATA } |
13be902c FC |
285 | f($v{v}); |
286 | is ($v{v}, '*main::DATA'); | |
287 | is (ref\$v{v}, 'GLOB', 'lvalue assignment preserves globs'); | |
288 | my $x = readline $v{v}; | |
98e007d4 | 289 | is ($x, "perl\n"); |
34770c8c | 290 | is ($e, '', '__DIE__ handler never called'); |
4ce457a6 TP |
291 | } |
292 | ||
98e007d4 | 293 | { |
34770c8c | 294 | my $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 | ); | |
34770c8c | 308 | is ($e, '', '__DIE__ handler not called'); |
4ce457a6 | 309 | my $x = readline $ary[0]; |
98e007d4 | 310 | is($x, "rocks\n"); |
34770c8c | 311 | is ($e, '', '__DIE__ handler never called'); |
4ce457a6 TP |
312 | } |
313 | ||
e15faf7d | 314 | { |
4184c77b NC |
315 | # Need some sort of die or warn to get the global destruction text if the |
316 | # bug is still present | |
5c2a9b31 | 317 | my $output = runperl(prog => <<'EOPROG'); |
e15faf7d | 318 | package M; |
5c2a9b31 | 319 | $| = 1; |
4184c77b | 320 | sub DESTROY {eval {die qq{Farewell $_[0]}}; print $@} |
e15faf7d NC |
321 | package main; |
322 | ||
3d7a9343 | 323 | bless \$A::B, q{M}; |
e15faf7d NC |
324 | *A:: = \*B::; |
325 | EOPROG | |
326 | like($output, qr/^Farewell M=SCALAR/, "DESTROY was called"); | |
327 | unlike($output, qr/global destruction/, | |
328 | "unreferenced symbol tables should be cleaned up immediately"); | |
329 | } | |
63fa9adc NC |
330 | |
331 | # Possibly not the correct test file for these tests. | |
332 | # There are certain space optimisations implemented via promotion rules to | |
333 | # GVs | |
334 | ||
bb112e5a NC |
335 | foreach (qw (oonk ga_shloip)) { |
336 | ok(!exists $::{$_}, "no symbols of any sort to start with for $_"); | |
337 | } | |
63fa9adc NC |
338 | |
339 | # A string in place of the typeglob is promoted to the function prototype | |
340 | $::{oonk} = "pie"; | |
341 | my $proto = eval 'prototype \&oonk'; | |
342 | die if $@; | |
343 | is ($proto, "pie", "String is promoted to prototype"); | |
344 | ||
345 | ||
346 | # A reference to a value is used to generate a constant subroutine | |
347 | foreach my $value (3, "Perl rules", \42, qr/whatever/, [1,2,3], {1=>2}, | |
5c1f4d79 | 348 | \*STDIN, \&ok, \undef, *STDOUT) { |
63fa9adc NC |
349 | delete $::{oonk}; |
350 | $::{oonk} = \$value; | |
351 | $proto = eval 'prototype \&oonk'; | |
352 | die if $@; | |
353 | is ($proto, '', "Prototype for a constant subroutine is empty"); | |
354 | ||
355 | my $got = eval 'oonk'; | |
356 | die if $@; | |
5c1f4d79 | 357 | is (ref $got, ref $value, "Correct type of value (" . ref($value) . ")"); |
63fa9adc NC |
358 | is ($got, $value, "Value is correctly set"); |
359 | } | |
5c1f4d79 | 360 | |
bb112e5a NC |
361 | delete $::{oonk}; |
362 | $::{oonk} = \"Value"; | |
363 | ||
364 | *{"ga_shloip"} = \&{"oonk"}; | |
365 | ||
366 | is (ref $::{ga_shloip}, 'SCALAR', "Export of proxy constant as is"); | |
367 | is (ref $::{oonk}, 'SCALAR', "Export doesn't affect original"); | |
368 | is (eval 'ga_shloip', "Value", "Constant has correct value"); | |
369 | is (ref $::{ga_shloip}, 'SCALAR', | |
93f09d7b | 370 | "Inlining of constant doesn't change representation"); |
bb112e5a NC |
371 | |
372 | delete $::{ga_shloip}; | |
373 | ||
374 | eval 'sub ga_shloip (); 1' or die $@; | |
375 | is ($::{ga_shloip}, '', "Prototype is stored as an empty string"); | |
376 | ||
377 | # Check that a prototype expands. | |
378 | *{"ga_shloip"} = \&{"oonk"}; | |
379 | ||
380 | is (ref $::{oonk}, 'SCALAR', "Export doesn't affect original"); | |
381 | is (eval 'ga_shloip', "Value", "Constant has correct value"); | |
382 | is (ref \$::{ga_shloip}, 'GLOB', "Symbol table has full typeglob"); | |
383 | ||
384 | ||
385 | @::zwot = ('Zwot!'); | |
386 | ||
387 | # Check that assignment to an existing typeglob works | |
388 | { | |
389 | my $w = ''; | |
390 | local $SIG{__WARN__} = sub { $w = $_[0] }; | |
391 | *{"zwot"} = \&{"oonk"}; | |
392 | is($w, '', "Should be no warning"); | |
393 | } | |
394 | ||
395 | is (ref $::{oonk}, 'SCALAR', "Export doesn't affect original"); | |
396 | is (eval 'zwot', "Value", "Constant has correct value"); | |
397 | is (ref \$::{zwot}, 'GLOB', "Symbol table has full typeglob"); | |
398 | is (join ('!', @::zwot), 'Zwot!', "Existing array still in typeglob"); | |
399 | ||
400 | sub spritsits () { | |
401 | "Traditional"; | |
402 | } | |
403 | ||
404 | # Check that assignment to an existing subroutine works | |
405 | { | |
406 | my $w = ''; | |
407 | local $SIG{__WARN__} = sub { $w = $_[0] }; | |
408 | *{"spritsits"} = \&{"oonk"}; | |
409 | like($w, qr/^Constant subroutine main::spritsits redefined/, | |
410 | "Redefining a constant sub should warn"); | |
411 | } | |
412 | ||
413 | is (ref $::{oonk}, 'SCALAR', "Export doesn't affect original"); | |
414 | is (eval 'spritsits', "Value", "Constant has correct value"); | |
415 | is (ref \$::{spritsits}, 'GLOB', "Symbol table has full typeglob"); | |
416 | ||
bb112e5a NC |
417 | # Check that assignment to an existing typeglob works |
418 | { | |
419 | my $w = ''; | |
420 | local $SIG{__WARN__} = sub { $w = $_[0] }; | |
50baa5ea VP |
421 | *{"plunk"} = []; |
422 | *{"plunk"} = \&{"oonk"}; | |
bb112e5a NC |
423 | is($w, '', "Should be no warning"); |
424 | } | |
425 | ||
bb112e5a NC |
426 | is (ref $::{oonk}, 'SCALAR', "Export doesn't affect original"); |
427 | is (eval 'plunk', "Value", "Constant has correct value"); | |
428 | is (ref \$::{plunk}, 'GLOB', "Symbol table has full typeglob"); | |
429 | ||
430 | my $gr = eval '\*plunk' or die; | |
431 | ||
432 | { | |
433 | my $w = ''; | |
434 | local $SIG{__WARN__} = sub { $w = $_[0] }; | |
50baa5ea | 435 | *{$gr} = \&{"oonk"}; |
2111d928 | 436 | 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 |
437 | } |
438 | ||
439 | is (ref $::{oonk}, 'SCALAR', "Export doesn't affect original"); | |
440 | is (eval 'plunk', "Value", "Constant has correct value"); | |
441 | is (ref \$::{plunk}, 'GLOB', "Symbol table has full typeglob"); | |
442 | ||
50baa5ea VP |
443 | # Non-void context should defeat the optimisation, and will cause the original |
444 | # to be promoted (what change 26482 intended) | |
445 | my $result; | |
446 | { | |
447 | my $w = ''; | |
448 | local $SIG{__WARN__} = sub { $w = $_[0] }; | |
449 | $result = *{"awkkkkkk"} = \&{"oonk"}; | |
450 | is($w, '', "Should be no warning"); | |
451 | } | |
452 | ||
453 | is (ref \$result, 'GLOB', | |
454 | "Non void assignment should still return a typeglob"); | |
455 | ||
456 | is (ref \$::{oonk}, 'GLOB', "This export does affect original"); | |
457 | is (eval 'plunk', "Value", "Constant has correct value"); | |
458 | is (ref \$::{plunk}, 'GLOB', "Symbol table has full typeglob"); | |
459 | ||
460 | delete $::{oonk}; | |
461 | $::{oonk} = \"Value"; | |
462 | ||
463 | sub non_dangling { | |
464 | my $w = ''; | |
465 | local $SIG{__WARN__} = sub { $w = $_[0] }; | |
466 | *{"zap"} = \&{"oonk"}; | |
467 | is($w, '', "Should be no warning"); | |
468 | } | |
469 | ||
470 | non_dangling(); | |
471 | is (ref $::{oonk}, 'SCALAR', "Export doesn't affect original"); | |
472 | is (eval 'zap', "Value", "Constant has correct value"); | |
473 | is (ref $::{zap}, 'SCALAR', "Exported target is also a PCS"); | |
474 | ||
475 | sub dangling { | |
476 | local $SIG{__WARN__} = sub { die $_[0] }; | |
477 | *{"biff"} = \&{"oonk"}; | |
478 | } | |
479 | ||
480 | dangling(); | |
481 | is (ref \$::{oonk}, 'GLOB', "This export does affect original"); | |
482 | is (eval 'biff', "Value", "Constant has correct value"); | |
483 | is (ref \$::{biff}, 'GLOB', "Symbol table has full typeglob"); | |
484 | ||
6f1b3ab0 FC |
485 | $::{yarrow} = [4,5,6]; |
486 | is join("-", eval "yarrow()"), '4-5-6', 'array ref as stash elem'; | |
487 | is ref $::{yarrow}, "ARRAY", 'stash elem is still array ref after use'; | |
488 | is join("-", eval "&yarrow"), '4-5-6', 'calling const list with &'; | |
489 | is join("-", eval "&yarrow(1..10)"), '4-5-6', 'const list ignores & args'; | |
490 | is prototype "yarrow", "", 'const list has "" prototype'; | |
491 | is eval "yarrow", 3, 'const list in scalar cx returns length'; | |
492 | ||
2eaf799e FC |
493 | $::{borage} = \&ok; |
494 | eval 'borage("sub ref in stash")' or fail "sub ref in stash"; | |
495 | ||
acaa9288 NC |
496 | { |
497 | use vars qw($glook $smek $foof); | |
498 | # Check reference assignment isn't affected by the SV type (bug #38439) | |
499 | $glook = 3; | |
500 | $smek = 4; | |
501 | $foof = "halt and cool down"; | |
502 | ||
503 | my $rv = \*smek; | |
504 | is($glook, 3); | |
505 | *glook = $rv; | |
506 | is($glook, 4); | |
507 | ||
508 | my $pv = ""; | |
509 | $pv = \*smek; | |
510 | is($foof, "halt and cool down"); | |
511 | *foof = $pv; | |
512 | is($foof, 4); | |
513 | } | |
514 | ||
5c1f4d79 NC |
515 | format = |
516 | . | |
517 | ||
2eaf799e | 518 | foreach my $value ({1=>2}, *STDOUT{IO}, *STDOUT{FORMAT}) { |
5c1f4d79 NC |
519 | # *STDOUT{IO} returns a reference to a PVIO. As it's blessed, ref returns |
520 | # IO::Handle, which isn't what we want. | |
521 | my $type = $value; | |
522 | $type =~ s/.*=//; | |
523 | $type =~ s/\(.*//; | |
524 | delete $::{oonk}; | |
525 | $::{oonk} = $value; | |
526 | $proto = eval 'prototype \&oonk'; | |
527 | like ($@, qr/^Cannot convert a reference to $type to typeglob/, | |
528 | "Cannot upgrade ref-to-$type to typeglob"); | |
529 | } | |
f9d52e31 NC |
530 | |
531 | { | |
532 | no warnings qw(once uninitialized); | |
533 | my $g = \*clatter; | |
534 | my $r = eval {no strict; ${*{$g}{SCALAR}}}; | |
535 | is ($@, '', "PERL_DONT_CREATE_GVSV shouldn't affect thingy syntax"); | |
536 | ||
537 | $g = \*vowm; | |
538 | $r = eval {use strict; ${*{$g}{SCALAR}}}; | |
539 | is ($@, '', | |
540 | "PERL_DONT_CREATE_GVSV shouldn't affect thingy syntax under strict"); | |
541 | } | |
542 | ||
06be3b40 NC |
543 | { |
544 | # Bug reported by broquaint on IRC | |
545 | *slosh::{HASH}->{ISA}=[]; | |
546 | slosh->import; | |
547 | pass("gv_fetchmeth coped with the unexpected"); | |
9e0d86f8 NC |
548 | |
549 | # An audit found these: | |
550 | { | |
551 | package slosh; | |
552 | sub rip { | |
553 | my $s = shift; | |
554 | $s->SUPER::rip; | |
555 | } | |
556 | } | |
557 | eval {slosh->rip;}; | |
558 | like ($@, qr/^Can't locate object method "rip"/, "Even with SUPER"); | |
559 | ||
560 | is(slosh->isa('swoosh'), ''); | |
561 | ||
562 | $CORE::GLOBAL::{"lock"}=[]; | |
563 | eval "no warnings; lock"; | |
564 | like($@, qr/^Not enough arguments for lock/, | |
565 | "Can't trip up general keyword overloading"); | |
566 | ||
567 | $CORE::GLOBAL::{"readline"}=[]; | |
b3c9268e | 568 | eval "<STDOUT> if 0"; |
9e0d86f8 | 569 | is($@, '', "Can't trip up readline overloading"); |
d5e716f5 NC |
570 | |
571 | $CORE::GLOBAL::{"readpipe"}=[]; | |
572 | eval "`` if 0"; | |
573 | is($@, '', "Can't trip up readpipe overloading"); | |
06be3b40 | 574 | } |
53a42478 NC |
575 | |
576 | { | |
577 | die if exists $::{BONK}; | |
578 | $::{BONK} = \"powie"; | |
579 | *{"BONK"} = \&{"BONK"}; | |
580 | eval 'is(BONK(), "powie", | |
93f09d7b | 581 | "Assignment works when glob created midway (bug 45607)"); 1' |
53a42478 NC |
582 | or die $@; |
583 | } | |
1f257c95 NC |
584 | |
585 | # For now these tests are here, but they would probably be better in a file for | |
586 | # tests for croaks. (And in turn, that probably deserves to be in a different | |
587 | # directory. Gerard Goossen has a point about the layout being unclear | |
588 | ||
589 | sub coerce_integer { | |
590 | no warnings 'numeric'; | |
591 | $_[0] |= 0; | |
592 | } | |
593 | sub coerce_number { | |
594 | no warnings 'numeric'; | |
595 | $_[0] += 0; | |
596 | } | |
597 | sub coerce_string { | |
598 | $_[0] .= ''; | |
599 | } | |
600 | ||
601 | foreach my $type (qw(integer number string)) { | |
602 | my $prog = "coerce_$type(*STDERR)"; | |
603 | is (scalar eval "$prog; 1", undef, "$prog failed..."); | |
604 | like ($@, qr/Can't coerce GLOB to $type in/, | |
605 | "with the correct error message"); | |
606 | } | |
607 | ||
e8986967 | 608 | # RT #65582 anonymous glob should be defined, and not coredump when |
1809c940 DM |
609 | # stringified. The behaviours are: |
610 | # | |
52a6327b FC |
611 | # defined($glob) "$glob" $glob .= ... |
612 | # 5.8.8 false "" with uninit warning "" with uninit warning | |
613 | # 5.10.0 true (coredump) (coredump) | |
614 | # 5.1[24] true "" "" with uninit warning | |
615 | # 5.16 true "*__ANON__::..." "*__ANON__::..." | |
1809c940 DM |
616 | |
617 | { | |
618 | my $io_ref = *STDOUT{IO}; | |
619 | my $glob = *$io_ref; | |
e8986967 | 620 | ok(defined $glob, "RT #65582 anon glob should be defined"); |
1809c940 DM |
621 | |
622 | my $warn = ''; | |
623 | local $SIG{__WARN__} = sub { $warn = $_[0] }; | |
624 | use warnings; | |
625 | my $str = "$glob"; | |
e8986967 | 626 | is($warn, '', "RT #65582 anon glob stringification shouldn't warn"); |
885f468a | 627 | is($str, '*__ANON__::__ANONIO__', |
e8986967 | 628 | "RT #65582/#96326 anon glob stringification"); |
1809c940 DM |
629 | } |
630 | ||
25451cef FC |
631 | # Another stringification bug: Test that recursion does not cause lexical |
632 | # handles to lose their names. | |
633 | sub r { | |
634 | my @output; | |
635 | @output = r($_[0]-1) if $_[0]; | |
636 | open my $fh, "TEST"; | |
637 | push @output, $$fh; | |
638 | close $fh; | |
639 | @output; | |
640 | } | |
641 | is join(' ', r(4)), | |
642 | '*main::$fh *main::$fh *main::$fh *main::$fh *main::$fh', | |
643 | 'recursion does not cause lex handles to lose their names'; | |
644 | ||
3a6ce63a FC |
645 | # And sub cloning, too; not just recursion |
646 | my $close_over_me; | |
647 | is join(' ', sub { | |
648 | () = $close_over_me; | |
649 | my @output; | |
650 | @output = CORE::__SUB__->($_[0]-1) if $_[0]; | |
651 | open my $fh, "TEST"; | |
652 | push @output, $$fh; | |
653 | close $fh; | |
654 | @output; | |
655 | }->(4)), | |
656 | '*main::$fh *main::$fh *main::$fh *main::$fh *main::$fh', | |
657 | 'sub cloning does not cause lex handles to lose their names'; | |
658 | ||
1f730e6c FC |
659 | # [perl #71254] - Assigning a glob to a variable that has a current |
660 | # match position. (We are testing that Perl_magic_setmglob respects globs' | |
661 | # special used of SvSCREAM.) | |
662 | { | |
663 | $m = 2; $m=~s/./0/gems; $m= *STDERR; | |
664 | is( | |
665 | "$m", "*main::STDERR", | |
666 | '[perl #71254] assignment of globs to vars with pos' | |
667 | ); | |
668 | } | |
669 | ||
2867cdbc Z |
670 | # [perl #72740] - indirect object syntax, heuristically imputed due to |
671 | # the non-existence of a function, should not cause a stash entry to be | |
672 | # created for the non-existent function. | |
673 | { | |
674 | package RT72740a; | |
675 | my $f = bless({}, RT72740b); | |
676 | sub s1 { s2 $f; } | |
677 | our $s4; | |
678 | sub s3 { s4 $f; } | |
679 | } | |
680 | { | |
681 | package RT72740b; | |
682 | sub s2 { "RT72740b::s2" } | |
683 | sub s4 { "RT72740b::s4" } | |
684 | } | |
685 | ok(exists($RT72740a::{s1}), "RT72740a::s1 exists"); | |
686 | ok(!exists($RT72740a::{s2}), "RT72740a::s2 does not exist"); | |
687 | ok(exists($RT72740a::{s3}), "RT72740a::s3 exists"); | |
688 | ok(exists($RT72740a::{s4}), "RT72740a::s4 exists"); | |
689 | is(RT72740a::s1(), "RT72740b::s2", "RT72740::s1 parsed correctly"); | |
690 | is(RT72740a::s3(), "RT72740b::s4", "RT72740::s3 parsed correctly"); | |
691 | ||
b9e00b79 LR |
692 | # [perl #71686] Globs that are in symbol table can be un-globbed |
693 | $sym = undef; | |
694 | $::{fake} = *sym; | |
695 | is (eval 'local *::fake = \"chuck"; $fake', 'chuck', | |
696 | "Localized glob didn't coerce into a RV"); | |
697 | is ($@, '', "Can localize FAKE glob that's present in stash"); | |
698 | is (scalar $::{fake}, "*main::sym", | |
699 | "Localized FAKE glob's value was correctly restored"); | |
700 | ||
0fe688f5 | 701 | # [perl #1804] *$x assignment when $x is a copy of another glob |
0095ccd4 | 702 | # And [perl #77508] (same thing with list assignment) |
0fe688f5 FC |
703 | { |
704 | no warnings 'once'; | |
705 | my $x = *_random::glob_that_is_not_used_elsewhere; | |
706 | *$x = sub{}; | |
707 | is( | |
708 | "$x", '*_random::glob_that_is_not_used_elsewhere', | |
709 | '[perl #1804] *$x assignment when $x is FAKE', | |
710 | ); | |
0095ccd4 FC |
711 | $x = *_random::glob_that_is_not_used_elsewhere; |
712 | (my $dummy, *$x) = (undef,[]); | |
713 | is( | |
714 | "$x", '*_random::glob_that_is_not_used_elsewhere', | |
715 | '[perl #77508] *$x list assignment when $x is FAKE', | |
716 | ) or require Devel::Peek, Devel::Peek::Dump($x); | |
0fe688f5 FC |
717 | } |
718 | ||
cf203c62 FR |
719 | # [perl #76540] |
720 | # this caused panics or 'Attempt to free unreferenced scalar' | |
721 | # (its a compile-time issue, so the die lets us skip the prints) | |
722 | { | |
723 | my @warnings; | |
724 | local $SIG{__WARN__} = sub { push @warnings, @_ }; | |
725 | ||
726 | eval <<'EOF'; | |
727 | BEGIN { $::{FOO} = \'bar' } | |
728 | die "made it"; | |
729 | print FOO, "\n"; | |
730 | print FOO, "\n"; | |
731 | EOF | |
732 | ||
733 | like($@, qr/made it/, "#76540 - no panic"); | |
734 | ok(!@warnings, "#76540 - no 'Attempt to free unreferenced scalar'"); | |
735 | } | |
736 | ||
13be902c FC |
737 | # [perl #77362] various bugs related to globs as PVLVs |
738 | { | |
739 | no warnings qw 'once void'; | |
740 | my %h; # We pass a key of this hash to the subroutine to get a PVLV. | |
741 | sub { for(shift) { | |
742 | # Set up our glob-as-PVLV | |
743 | $_ = *hon; | |
744 | ||
745 | # Bad symbol for array | |
746 | ok eval{ @$_; 1 }, 'PVLV glob slots can be autovivified' or diag $@; | |
747 | ||
748 | # This should call TIEHANDLE, not TIESCALAR | |
749 | *thext::TIEHANDLE = sub{}; | |
750 | ok eval{ tie *$_, 'thext'; 1 }, 'PVLV globs can be tied as handles' | |
751 | or diag $@; | |
752 | ||
753 | # Assigning undef to the glob should not overwrite it... | |
754 | { | |
755 | my $w; | |
756 | local $SIG{__WARN__} = sub { $w = shift }; | |
757 | *$_ = undef; | |
758 | is $_, "*main::hon", 'PVLV: assigning undef to the glob does nothing'; | |
759 | like $w, qr\Undefined value assigned to typeglob\, | |
760 | 'PVLV: assigning undef to the glob warns'; | |
761 | } | |
762 | ||
2acc3314 | 763 | # Neither should reference assignment. |
13be902c | 764 | *$_ = []; |
2acc3314 | 765 | is $_, "*main::hon", "PVLV: arrayref assignment assigns to the AV slot"; |
13be902c FC |
766 | |
767 | # Concatenation should still work. | |
768 | ok eval { $_ .= 'thlew' }, 'PVLV concatenation does not die' or diag $@; | |
2acc3314 | 769 | is $_, '*main::honthlew', 'PVLV concatenation works'; |
13be902c FC |
770 | |
771 | # And we should be able to overwrite it with a string, number, or refer- | |
772 | # ence, too, if we omit the *. | |
773 | $_ = *hon; $_ = 'tzor'; | |
774 | is $_, 'tzor', 'PVLV: assigning a string over a glob'; | |
775 | $_ = *hon; $_ = 23; | |
776 | is $_, 23, 'PVLV: assigning an integer over a glob'; | |
777 | $_ = *hon; $_ = 23.23; | |
778 | is $_, 23.23, 'PVLV: assigning a float over a glob'; | |
779 | $_ = *hon; $_ = \my $sthat; | |
780 | is $_, \$sthat, 'PVLV: assigning a reference over a glob'; | |
781 | ||
782 | # This bug was found by code inspection. Could this ever happen in | |
783 | # real life? :-) | |
784 | # This duplicates a file handle, accessing it through a PVLV glob, the | |
785 | # glob having been removed from the symbol table, so a stringified form | |
786 | # of it does not work. This checks that sv_2io does not stringify a PVLV. | |
787 | $_ = *quin; | |
788 | open *quin, "test.pl"; # test.pl is as good a file as any | |
789 | delete $::{quin}; | |
790 | ok eval { open my $zow, "<&", $_ }, 'PVLV: sv_2io stringifieth not' | |
791 | or diag $@; | |
792 | ||
793 | # Similar tests to make sure sv_2cv etc. do not stringify. | |
794 | *$_ = sub { 1 }; | |
795 | ok eval { &$_ }, "PVLV glob can be called as a sub" or diag $@; | |
796 | *flelp = sub { 2 }; | |
797 | $_ = 'flelp'; | |
798 | is eval { &$_ }, 2, 'PVLV holding a string can be called as a sub' | |
799 | or diag $@; | |
800 | ||
801 | # Coderef-to-glob assignment when the glob is no longer accessible | |
802 | # under its name: These tests are to make sure the OPpASSIGN_CV_TO_GV | |
803 | # optimisation takes PVLVs into account, which is why the RHSs have to be | |
804 | # named subs. | |
805 | use constant gheen => 'quare'; | |
806 | $_ = *ming; | |
807 | delete $::{ming}; | |
808 | *$_ = \&gheen; | |
809 | is eval { &$_ }, 'quare', | |
810 | 'PVLV: constant assignment when the glob is detached from the symtab' | |
811 | or diag $@; | |
812 | $_ = *bength; | |
813 | delete $::{bength}; | |
814 | *gheck = sub { 'lon' }; | |
815 | *$_ = \&gheck; | |
816 | is eval { &$_ }, 'lon', | |
817 | 'PVLV: coderef assignment when the glob is detached from the symtab' | |
818 | or diag $@; | |
819 | ||
e77ae825 NC |
820 | SKIP: { |
821 | skip_if_miniperl("no dynamic loading on miniperl, so can't load PerlIO::scalar", 1); | |
822 | # open should accept a PVLV as its first argument | |
823 | $_ = *hon; | |
824 | ok eval { open $_,'<', \my $thlext }, 'PVLV can be the first arg to open' | |
825 | or diag $@; | |
826 | } | |
13be902c FC |
827 | |
828 | # -t should not stringify | |
829 | $_ = *thlit; delete $::{thlit}; | |
830 | *$_ = *STDOUT{IO}; | |
831 | ok defined -t $_, 'PVLV: -t does not stringify'; | |
832 | ||
833 | # neither should -T | |
804401ea FC |
834 | # but some systems don’t support this on file handles |
835 | my $pass; | |
836 | ok | |
837 | eval { | |
838 | open my $quile, "<", 'test.pl'; | |
839 | $_ = *$quile; | |
840 | $pass = -T $_; | |
841 | 1 | |
842 | } ? $pass : $@ =~ /not implemented on filehandles/, | |
843 | "PVLV: -T does not stringify"; | |
13be902c FC |
844 | |
845 | # Unopened file handle | |
846 | { | |
847 | my $w; | |
848 | local $SIG{__WARN__} = sub { $w .= shift }; | |
849 | $_ = *vor; | |
850 | close $_; | |
851 | like $w, qr\unopened filehandle vor\, | |
852 | 'PVLV globs get their names reported in unopened error messages'; | |
853 | } | |
854 | ||
855 | }}->($h{k}); | |
856 | } | |
857 | ||
251c9b20 NC |
858 | *aieee = 4; |
859 | pass('Can assign integers to typeglobs'); | |
860 | *aieee = 3.14; | |
861 | pass('Can assign floats to typeglobs'); | |
862 | *aieee = 'pi'; | |
863 | pass('Can assign strings to typeglobs'); | |
864 | ||
0936ef8b FC |
865 | { |
866 | package thrext; | |
867 | sub TIESCALAR{bless[]} | |
868 | sub STORE{ die "No!"} | |
869 | sub FETCH{ no warnings 'once'; *thrit } | |
870 | tie my $a, "thrext"; | |
871 | () = "$a"; # do a fetch; now $a holds a glob | |
872 | eval { *$a = sub{} }; | |
873 | untie $a; | |
874 | eval { $a = "bar" }; | |
875 | ::is $a, "bar", | |
876 | "[perl #77812] Globs in tied scalars can be reified if STORE dies" | |
877 | } | |
878 | ||
8d33f848 FC |
879 | # These two crashed prior to 5.13.6. In 5.13.6 they were fatal errors. They |
880 | # were fixed in 5.13.7. | |
881 | ok eval { | |
882 | my $glob = \*heen::ISA; | |
883 | delete $::{"heen::"}; | |
884 | *$glob = *bar; | |
885 | }, "glob-to-*ISA assignment works when *ISA has lost its stash"; | |
886 | ok eval { | |
887 | my $glob = \*slare::ISA; | |
888 | delete $::{"slare::"}; | |
889 | *$glob = []; | |
890 | }, "array-to-*ISA assignment works when *ISA has lost its stash"; | |
891 | # These two crashed in 5.13.6. They were likewise fixed in 5.13.7. | |
892 | ok eval { | |
893 | sub greck; | |
4a68a320 | 894 | my $glob = do { no warnings "once"; \*phing::foo}; |
8d33f848 FC |
895 | delete $::{"phing::"}; |
896 | *$glob = *greck; | |
dc115b7c | 897 | }, "Assigning a glob-with-sub to a glob that has lost its stash works"; |
8d33f848 FC |
898 | ok eval { |
899 | sub pon::foo; | |
900 | my $glob = \*pon::foo; | |
901 | delete $::{"pon::"}; | |
902 | *$glob = *foo; | |
dc115b7c | 903 | }, "Assigning a glob to a glob-with-sub that has lost its stash works"; |
8d33f848 | 904 | |
d8906c05 FC |
905 | { |
906 | package Tie::Alias; | |
907 | sub TIESCALAR{ bless \\pop } | |
908 | sub FETCH { $${$_[0]} } | |
909 | sub STORE { $${$_[0]} = $_[1] } | |
910 | package main; | |
911 | tie my $alias, 'Tie::Alias', my $var; | |
912 | no warnings 'once'; | |
913 | $var = *galobbe; | |
914 | { | |
915 | local *$alias = []; | |
916 | $var = 3; | |
917 | is $alias, 3, "[perl #77926] Glob reification during localisation"; | |
918 | } | |
919 | } | |
8d33f848 | 920 | |
b0d55c99 FC |
921 | # This code causes gp_free to call a destructor when a glob is being |
922 | # restored on scope exit. The destructor used to see SVs with a refcount of | |
923 | # zero inside the glob, which could result in crashes (though not in this | |
924 | # test case, which just panics). | |
925 | { | |
926 | no warnings 'once'; | |
927 | my $survived; | |
928 | *Trit::DESTROY = sub { | |
929 | $thwext = 42; # panic | |
930 | $survived = 1; | |
931 | }; | |
932 | { | |
933 | local *thwext; | |
934 | $thwext = bless[],'Trit'; | |
935 | (); | |
936 | } | |
937 | ok $survived, | |
938 | 'no error when gp_free calls a destructor that assigns to the gv'; | |
939 | } | |
940 | ||
4571f4a7 FC |
941 | # This is a similar test, for destructors seeing a GV without a reference |
942 | # count on its gp. | |
943 | sub undefine_me_if_you_dare {} | |
944 | bless \&undefine_me_if_you_dare, "Undefiner"; | |
945 | sub Undefiner::DESTROY { | |
946 | undef *undefine_me_if_you_dare; | |
947 | } | |
948 | { | |
949 | my $w; | |
950 | local $SIG{__WARN__} = sub { $w .= shift }; | |
951 | undef *undefine_me_if_you_dare; | |
952 | is $w, undef, | |
953 | 'undeffing a gv in DESTROY triggered by undeffing the same gv' | |
954 | } | |
955 | ||
795eb8c8 FC |
956 | # [perl #121242] |
957 | # More gp_free madness. gp_free could call a destructor that frees the gv | |
958 | # whose gp is being freed. | |
959 | sub Fred::AUTOLOAD { $Fred::AUTOLOAD } | |
960 | undef *{"Fred::AUTOLOAD"}; | |
961 | pass 'no crash from gp_free triggering gv_try_downgrade'; | |
962 | sub _121242::DESTROY { delete $_121242::{$_[0][0]} }; | |
963 | ${"_121242::foo"} = bless ["foo"], _121242::; | |
964 | undef *{"_121242::foo"}; | |
965 | pass 'no crash from pp_undef/gp_free freeing the gv'; | |
966 | ${"_121242::bar"} = bless ["bar"], _121242::; | |
967 | *{"_121242::bar"} = "bar"; | |
968 | pass 'no crash from sv_setsv/gp_free freeing the gv'; | |
969 | ${"_121242::baz"} = bless ["baz"], _121242::; | |
970 | *{"_121242::baz"} = *foo; | |
971 | pass 'no crash from glob_assign_glob/gp_free freeing the gv'; | |
972 | { | |
973 | my $foo; | |
974 | undef *_121242::DESTROY; | |
975 | *_121242::DESTROY = sub { undef $foo }; | |
976 | my $set_up_foo = sub { | |
977 | # Make $$foo into a fake glob whose array slot holds a blessed | |
978 | # array that undefines $foo, freeing the fake glob. | |
979 | $foo = undef; | |
980 | $$foo = do {local *bar}; | |
981 | *$$foo = bless [], _121242::; | |
982 | }; | |
983 | &$set_up_foo; | |
984 | $$foo = 3; | |
985 | pass 'no crash from sv_setsv/sv_unglob/gp_free freeing the gv'; | |
986 | &$set_up_foo; | |
987 | utf8::encode $$foo; | |
988 | pass 'no crash from sv_utf8_encode/sv_unglob/gp_free freeing the gv'; | |
989 | &$set_up_foo; | |
990 | open BAR, "TEST"; | |
991 | $$foo .= <BAR>; | |
992 | pass 'no crash from do_readline/sv_unglob/gp_free freeing the gv'; | |
993 | close BAR; | |
994 | &$set_up_foo; | |
995 | $$foo .= 3; | |
996 | pass 'no crash from pp_concat/sv_unglob/gp_free freeing the gv'; | |
997 | &$set_up_foo; | |
998 | no warnings; | |
999 | $$foo++; | |
1000 | pass 'no crash from sv_inc/sv_unglob/gp_free freeing the gv'; | |
1001 | &$set_up_foo; | |
1002 | $$foo--; | |
1003 | pass 'no crash from sv_dec/sv_unglob/gp_free freeing the gv'; | |
1004 | &$set_up_foo; | |
1005 | undef $$foo; | |
1006 | pass 'no crash from pp_undef/sv_unglob/gp_free freeing the gv'; | |
1007 | $foo = undef; | |
1008 | $$foo = 3; | |
1009 | $$foo =~ s/3/$$foo = do {local *bar}; *$$foo = bless [],_121242::; 4/e; | |
1010 | pass 'no crash from pp_substcont/sv_unglob/gp_free freeing the gv'; | |
1011 | } | |
1012 | ||
f132ae69 FC |
1013 | # *{undef} |
1014 | eval { *{my $undef} = 3 }; | |
1015 | like $@, qr/^Can't use an undefined value as a symbol reference at /, | |
1016 | '*{ $undef } assignment'; | |
1017 | eval { *{;undef} = 3 }; | |
1018 | like $@, qr/^Can't use an undefined value as a symbol reference at /, | |
1019 | '*{ ;undef } assignment'; | |
1020 | ||
914ecc63 FC |
1021 | # [perl #99142] defined &{"foo"} when there is a constant stub |
1022 | # If I break your module, you get to have it mentioned in Perl's tests. :-) | |
1023 | package HTTP::MobileAttribute::Plugin::Locator { | |
1024 | use constant LOCATOR_GPS => 1; | |
1025 | ::ok defined &{__PACKAGE__."::LOCATOR_GPS"}, | |
1026 | 'defined &{"name of constant"}'; | |
1027 | ::ok Internals::SvREFCNT(${__PACKAGE__."::"}{LOCATOR_GPS}), | |
1028 | "stash elem for slot is not freed prematurely"; | |
1029 | } | |
1030 | ||
e38acfd7 FC |
1031 | # Check that constants promoted to CVs point to the right GVs when the name |
1032 | # contains a null. | |
1033 | package lrcg { | |
1034 | use constant x => 3; | |
1035 | # These two lines abuse the optimisation that copies the scalar ref from | |
1036 | # one stash element to another, to get a constant with a null in its name | |
1037 | *{"yz\0a"} = \&{"x"}; | |
1038 | my $ref = \&{"yz\0a"}; | |
1039 | ::ok !exists $lrcg::{yz}, | |
1040 | 'constants w/nulls in their names point 2 the right GVs when promoted'; | |
1041 | } | |
1042 | ||
af230ad6 FC |
1043 | { |
1044 | no warnings 'io'; | |
1045 | stat *{"try_downgrade"}; | |
1046 | -T _; | |
1047 | $bang = $!; | |
1048 | eval "*try_downgrade if 0"; | |
1049 | -T _; | |
1050 | is "$!",$bang, | |
1051 | 'try_downgrade does not touch PL_statgv (last stat handle)'; | |
2be08ad1 FC |
1052 | readline *{"try_downgrade2"}; |
1053 | my $lastfh = "${^LAST_FH}"; | |
1054 | eval "*try_downgrade2 if 0"; | |
1055 | is ${^LAST_FH}, $lastfh, 'try_downgrade does not touch PL_last_in_gv'; | |
af230ad6 FC |
1056 | } |
1057 | ||
0fbaa0e5 FC |
1058 | is runperl(prog => '$s = STDERR; close $s; undef *$s;' |
1059 | .'eval q-*STDERR if 0-; *$s = *STDOUT{IO}; warn'), | |
1060 | "Warning: something's wrong at -e line 1.\n", | |
1061 | "try_downgrade does not touch PL_stderrgv"; | |
1062 | ||
8941bf97 FC |
1063 | is runperl(prog => |
1064 | 'use constant foo=>1; BEGIN { $x = \&foo } undef &$x; $x->()', | |
1065 | stderr=>1), | |
1066 | "Undefined subroutine &main::foo called at -e line 1.\n", | |
1067 | "gv_try_downgrade does not anonymise CVs referenced elsewhere"; | |
1068 | ||
316a4c4b JH |
1069 | SKIP: { |
1070 | skip_if_miniperl("no dynamic loading on miniperl, so can't load IO::File", 4); | |
1071 | ||
acb187b4 FC |
1072 | package glob_constant_test { |
1073 | sub foo { 42 } | |
1074 | use constant bar => *foo; | |
1075 | BEGIN { undef *foo } | |
1076 | ::is eval { bar->() }, eval { &{+bar} }, | |
1077 | 'glob_constant->() is not mangled at compile time'; | |
1078 | ::is "$@", "", 'no error from eval { &{+glob_constant} }'; | |
7131132e KF |
1079 | use constant quux => do { |
1080 | local *F; | |
1081 | my $f = *F; | |
1082 | *$f = *STDOUT{IO}; | |
1083 | }; | |
1084 | ::is eval { quux->autoflush; 420 }, 420, | |
1085 | 'glob_constant->method() works'; | |
1086 | ::is "$@", "", 'no error from eval { glob_constant->method() }'; | |
acb187b4 FC |
1087 | } |
1088 | ||
316a4c4b JH |
1089 | } |
1090 | ||
7bdb4ff0 FC |
1091 | { |
1092 | my $free2; | |
1093 | local $SIG{__WARN__} = sub { ++$free2 if shift =~ /Attempt to free/ }; | |
1094 | my $handleref; | |
1095 | my $proxy = \$handleref; | |
1096 | open $$proxy, "TEST"; | |
1097 | delete $::{*$handleref{NAME}}; # delete *main::_GEN_xxx | |
1098 | undef $handleref; | |
1099 | is $free2, undef, | |
1100 | 'no double free because of bad rv2gv/newGVgen refcounting'; | |
1101 | } | |
1102 | ||
f9509170 FC |
1103 | # Look away, please. |
1104 | # This violates perl's internal structures by fiddling with stashes in a | |
1105 | # way that should never happen, but perl should not start trying to free | |
1106 | # unallocated memory as a result. There is no ok() or is() because the | |
1107 | # panic that used to occur only occurred during global destruction, and | |
1108 | # only with PERL_DESTRUCT_LEVEL=2. (The panic itself was sufficient for | |
1109 | # the harness to consider this test script to have failed.) | |
1110 | $::{aoeuaoeuaoeaoeu} = __PACKAGE__; # cow | |
1111 | () = *{"aoeuaoeuaoeaoeu"}; | |
1112 | ||
2f222bbd FC |
1113 | $x = *_119051; |
1114 | $y = \&$x; | |
1115 | undef $x; | |
1116 | eval { &$y }; | |
1117 | pass "No crash due to CvGV(vivified stub) pointing to flattened glob copy"; | |
1118 | # Not really supported, but this should not crash either: | |
1119 | $x = *_119051again; | |
1120 | delete $::{_119051again}; | |
1121 | $::{_119051again} = $x; # now we have a fake glob under the right name | |
1122 | $y = \&$x; # so when this tries to look up the right GV for | |
1123 | undef $::{_119051again}; # CvGV, it still gets a fake one | |
1124 | eval { $y->() }; | |
1125 | pass "No crash due to CvGV pointing to glob copy in the stash"; | |
1126 | ||
ff2a62e0 FC |
1127 | # Aliasing should disable no-common-vars optimisation. |
1128 | { | |
1129 | *x = *y; | |
1130 | $x = 3; | |
1131 | ($x, my $z) = (1, $y); | |
1132 | is $z, 3, 'list assignment after aliasing [perl #89646]'; | |
1133 | } | |
1134 | ||
3c62f09f DM |
1135 | # RT #125840: make sure *x = $x doesn't do bad things by freeing $x before |
1136 | # it's assigned. | |
1137 | ||
1138 | { | |
1139 | $a_125840 = 1; | |
1140 | $b_125840 = 2; | |
1141 | $a_125840 = *b_125840; | |
1142 | *a_125840 = $a_125840; | |
1143 | is($a_125840, 2, 'RT #125840: *a = $a'); | |
1144 | ||
1145 | $c_125840 = 1; | |
1146 | $d_125840 = 2; | |
1147 | *d_125840 = $d_125840 = *c_125840; | |
1148 | is($d_125840, 1, 'RT #125840: *d=$d=*c'); | |
1149 | $c_125840 = $d_125840; | |
1150 | is($c_125840, 1, 'RT #125840: $c=$d'); | |
1151 | } | |
1152 | ||
ff2a62e0 | 1153 | |
99491443 | 1154 | __END__ |
98e007d4 NC |
1155 | Perl |
1156 | Rules | |
1157 | perl | |
1158 | rocks |