#!./perl # # various typeglob tests # BEGIN { chdir 't' if -d 't'; require './test.pl'; set_up_inc('../lib'); skip_all_without_unicode_tables(); } use utf8; use open qw( :utf8 :std ); use warnings; plan( tests => 206 ); # type coersion on assignment $ᕘ = 'ᕘ'; $ᴮᛅ = *main::ᕘ; $ᴮᛅ = $ᕘ; is(ref(\$ᴮᛅ), 'SCALAR'); $ᕘ = *main::ᴮᛅ; # type coersion (not) on misc ops ok($ᕘ); is(ref(\$ᕘ), 'GLOB'); unlike ($ᕘ, qr/abcd/); is(ref(\$ᕘ), 'GLOB'); is($ᕘ, '*main::ᴮᛅ'); is(ref(\$ᕘ), 'GLOB'); { no warnings; ${\*$ᕘ} = undef; is(ref(\$ᕘ), 'GLOB', 'no type coersion when assigning to *{} retval'); $::{ఫｹ} = *ᴮᛅ; is( \$::{ఫｹ}, \*{"ఫｹ"}, 'symbolic *{} returns symtab entry when FAKE' ); ${\*{"ఫｹ"}} = undef; is( ref(\$::{ఫｹ}), 'GLOB', 'no type coersion when assigning to retval of symbolic *{}' ); $::{pɥአＱuઍ} = *ᴮᛅ; eval ' is( \$::{pɥአＱuઍ}, \*pɥአＱuઍ, "compile-time *{} returns symtab entry when FAKE" ); ${\*pɥአＱuઍ} = undef; '; is( ref(\$::{pɥአＱuઍ}), 'GLOB', 'no type coersion when assigning to retval of compile-time *{}' ); } # type coersion on substitutions that match $a = *main::ᕘ; $b = $a; $a =~ s/^X//; is(ref(\$a), 'GLOB'); $a =~ s/^\*//; is($a, 'main::ᕘ'); is(ref(\$b), 'GLOB'); # typeglobs as lvalues substr($ᕘ, 0, 1) = "XXX"; is(ref(\$ᕘ), 'SCALAR'); is($ᕘ, 'XXXmain::ᴮᛅ'); # returning glob values sub ᕘ { local($ᴮᛅ) = *main::ᕘ; $ᕘ = *main::ᴮᛅ; return ($ᕘ, $ᴮᛅ); } ($ፉṶ, $ባ) = ᕘ(); ok(defined $ፉṶ); is(ref(\$ፉṶ), 'GLOB'); ok(defined $ባ); is(ref(\$ባ), 'GLOB'); # nested package globs # NOTE: It's probably OK if these semantics change, because the # fact that %X::Y:: is stored in %X:: isn't documented. # (I hope.) { package ฝ오::ʉ; no warnings 'once'; $test=1; } ok(exists $ฝ오::{'ʉ::'}); is($ฝ오::{'ʉ::'}, '*ฝ오::ʉ::'); # test undef operator clearing out entire glob $ᕘ = 'stuff'; @ᕘ = qw(more stuff); %ᕘ = qw(even more random stuff); undef *ᕘ; is ($ᕘ, undef); is (scalar @ᕘ, 0); is (scalar %ᕘ, 0); { # test warnings from assignment of undef to glob my $msg = ''; local $SIG{__WARN__} = sub { $msg = $_[0] }; use warnings; *ᕘ = 'ᴮᛅ'; is($msg, ''); *ᕘ = undef; like($msg, qr/Undefined value assigned to typeglob/); my $O_grave = utf8::unicode_to_native(0xd2); my $E_grave = utf8::unicode_to_native(0xc8); my $pat = sprintf( # It took a lot of experimentation to get the backslashes right (khw) "Argument \"\\*main::(?:PW\\\\x\\{%x\\}MPF" . "|SKR\\\\x\\{%x\\}\\\\x\\{%x\\}\\\\x\\{%x\\})\" " . "isn't numeric in sprintf", $O_grave, $E_grave, $E_grave, $E_grave); $pat = qr/$pat/; no warnings 'once'; # test warnings for converting globs to other forms my $copy = *PWÒMPF; foreach ($copy, *SKRÈÈÈ) { $msg = ''; my $victim = sprintf "%d", $_; like($msg, $pat, "Warning on conversion to IV"); is($victim, 0); $msg = ''; $victim = sprintf "%u", $_; like($msg, $pat, "Warning on conversion to UV"); is($victim, 0); $msg = ''; $victim = sprintf "%e", $_; like($msg, $pat, "Warning on conversion to NV"); like($victim, qr/^0\.0+E\+?00/i, "Expect floating point zero"); $msg = ''; $victim = sprintf "%s", $_; is($msg, '', "No warning on stringification"); is($victim, '' . $_); } } my $test = curr_test(); # test *glob{THING} syntax $Ẋ = "ok $test\n"; ++$test; @Ẋ = ("ok $test\n"); ++$test; %Ẋ = ("ok $test" => "\n"); ++$test; sub Ẋ { "ok $test\n" } print ${*Ẋ{SCALAR}}, @{*Ẋ{ARRAY}}, %{*Ẋ{HASH}}, &{*Ẋ{CODE}}; # This needs to go here, after the print, as sub Ẋ will return the current # value of test ++$test; format Ẋ = XXX This text isn't used. Should it be? . curr_test($test); is (ref *Ẋ{FORMAT}, "FORMAT"); *Ẋ = *STDOUT; is (*{*Ẋ{GLOB}}, "*main::STDOUT"); { my $test = curr_test(); print {*Ẋ{IO}} "ok $test\n"; ++$test; my $warn; local $SIG{__WARN__} = sub { $warn .= $_[0]; }; my $val = *Ẋ{FILEHANDLE}; # deprecation warning removed in v5.23 -- rjbs, 2015-12-31 # https://github.com/Perl/perl5/issues/15105 print {*Ẋ{IO}} (! defined $warn ? "ok $test\n" : "not ok $test\n"); curr_test(++$test); } { # test if defined() doesn't create any new symbols my $a = "Sʎｍ000"; ok(!defined *{$a}); ok(!defined ${$a}); ok(!defined *{$a}); ok(!defined &{$a}); ok(!defined *{$a}); my $state = "not"; *{$a} = sub { $state = "ok" }; ok(defined &{$a}); ok(defined *{$a}); &{$a}; is ($state, 'ok'); } # [ID 20010526.001 (#7038)] localized glob loses value when assigned to $Ｊ=1; %Ｊ=(a=>1); @Ｊ=(1); local *Ｊ=*Ｊ; *Ｊ = sub{}; is($Ｊ, 1); is($Ｊ{a}, 1); is($Ｊ[0], 1); { # does pp_readline() handle glob-ness correctly? my $g = *ᕘ; $g = ; is ($g, "Perl\n"); } { my $w = ''; local $SIG{__WARN__} = sub { $w = $_[0] }; sub aʙȼ1 (); local *aʙȼ1 = sub { }; is ($w, ''); sub aʙȼ2 (); local *aʙȼ2; *aʙȼ2 = sub { }; is ($w, ''); sub aʙȼ3 (); *aʙȼ3 = sub { }; like ($w, qr/Prototype mismatch/); } { # [17375] rcatline to formerly-defined undef was broken. Fixed in # do_readline by checking SvOK. AMS, 20020918 my $x = "not "; $x = undef; $x .= ; is ($x, "Rules\n"); } { # test the assignment of a GLOB to an LVALUE my $e = ''; local $SIG{__DIE__} = sub { $e = $_[0] }; my %Ｖ; sub ƒ { $_[0] = 0; $_[0] = "a"; $_[0] = *DATA } ƒ($Ｖ{Ｖ}); is ($Ｖ{Ｖ}, '*main::DATA'); is (ref\$Ｖ{Ｖ}, 'GLOB', 'lvalue assignment preserves globs'); my $x = readline $Ｖ{Ｖ}; is ($x, "perl\n"); is ($e, '', '__DIE__ handler never called'); } { my $e = ''; # GLOB assignment to tied element local $SIG{__DIE__} = sub { $e = $_[0] }; sub Ʈ::TIEARRAY { bless [] => "Ʈ" } sub Ʈ::STORE { $_[0]->[ $_[1] ] = $_[2] } sub Ʈ::FETCH { $_[0]->[ $_[1] ] } sub Ʈ::FETCHSIZE { @{$_[0]} } tie my @ary => "Ʈ"; $ary[0] = *DATA; is ($ary[0], '*main::DATA'); is ( ref\tied(@ary)->[0], 'GLOB', 'tied elem assignment preserves globs' ); is ($e, '', '__DIE__ handler not called'); my $x = readline $ary[0]; is($x, "rocks\n"); is ($e, '', '__DIE__ handler never called'); } { SKIP: { skip_if_miniperl('no dynamic loading on miniperl, no Encode', 2); # Need some sort of die or warn to get the global destruction text if the # bug is still present my $prog = <<'EOPROG'; use utf8; use open qw( :utf8 :std ); package ᴹ; $| = 1; sub DESTROY {eval {die qq{Farewell $_[0]}}; print $@} package main; bless \$Ⱥ::ㄅ, q{ᴹ}; *Ⱥ:: = \*ㄅ::; EOPROG utf8::decode($prog); my $output = runperl(prog => $prog); require Encode; $output = Encode::decode("UTF-8", $output); like($output, qr/^Farewell ᴹ=SCALAR/, "DESTROY was called"); unlike($output, qr/global destruction/, "unreferenced symbol tables should be cleaned up immediately"); } } { # Possibly not the correct test file for these tests. # There are certain space optimisations implemented via promotion rules to # GVs foreach (qw (оઓnḲ ga_ㄕƚo잎)) { ok(!exists $::{$_}, "no symbols of any sort to start with for $_"); } # A string in place of the typeglob is promoted to the function prototype $::{оઓnḲ} = "pìè"; my $proto = eval 'prototype \&оઓnḲ'; die if $@; is ($proto, "pìè", "String is promoted to prototype"); # A reference to a value is used to generate a constant subroutine foreach my $value (3, "Perl rules", \42, qr/whatever/, [1,2,3], {1=>2}, \*STDIN, \&ok, \undef, *STDOUT) { delete $::{оઓnḲ}; $::{оઓnḲ} = \$value; $proto = eval 'prototype \&оઓnḲ'; die if $@; is ($proto, '', "Prototype for a constant subroutine is empty"); my $got = eval 'оઓnḲ'; die if $@; is (ref $got, ref $value, "Correct type of value (" . ref($value) . ")"); is ($got, $value, "Value is correctly set"); } } delete $::{оઓnḲ}; $::{оઓnḲ} = \"Value"; *{"ga_ㄕƚo잎"} = \&{"оઓnḲ"}; is (ref $::{ga_ㄕƚo잎}, 'SCALAR', "Export of proxy constant as is"); is (ref $::{оઓnḲ}, 'SCALAR', "Export doesn't affect original"); is (eval 'ga_ㄕƚo잎', "Value", "Constant has correct value"); is (ref $::{ga_ㄕƚo잎}, 'SCALAR', "Inlining of constant doesn't change representation"); delete $::{ga_ㄕƚo잎}; eval 'sub ga_ㄕƚo잎 (); 1' or die $@; is ($::{ga_ㄕƚo잎}, '', "Prototype is stored as an empty string"); # Check that a prototype expands. *{"ga_ㄕƚo잎"} = \&{"оઓnḲ"}; is (ref $::{оઓnḲ}, 'SCALAR', "Export doesn't affect original"); is (eval 'ga_ㄕƚo잎', "Value", "Constant has correct value"); is (ref \$::{ga_ㄕƚo잎}, 'GLOB', "Symbol table has full typeglob"); @::zᐓｔ = ('Zᐓｔ!'); # Check that assignment to an existing typeglob works { my $w = ''; local $SIG{__WARN__} = sub { $w = $_[0] }; *{"zᐓｔ"} = \&{"оઓnḲ"}; is($w, '', "Should be no warning"); } is (ref $::{оઓnḲ}, 'SCALAR', "Export doesn't affect original"); is (eval 'zᐓｔ', "Value", "Constant has correct value"); is (ref \$::{zᐓｔ}, 'GLOB', "Symbol table has full typeglob"); is (join ('!', @::zᐓｔ), 'Zᐓｔ!', "Existing array still in typeglob"); sub Ṩp맅싵Ş () { "Traditional"; } # Check that assignment to an existing subroutine works { my $w = ''; local $SIG{__WARN__} = sub { $w = $_[0] }; *{"Ṩp맅싵Ş"} = \&{"оઓnḲ"}; like($w, qr/^Constant subroutine main::Ṩp맅싵Ş redefined/, "Redefining a constant sub should warn"); } is (ref $::{оઓnḲ}, 'SCALAR', "Export doesn't affect original"); is (eval 'Ṩp맅싵Ş', "Value", "Constant has correct value"); is (ref \$::{Ṩp맅싵Ş}, 'GLOB', "Symbol table has full typeglob"); # Check that assignment to an existing typeglob works { my $w = ''; local $SIG{__WARN__} = sub { $w = $_[0] }; *{"plუᒃ"} = []; *{"plუᒃ"} = \&{"оઓnḲ"}; is($w, '', "Should be no warning"); } is (ref $::{оઓnḲ}, 'SCALAR', "Export doesn't affect original"); is (eval 'plუᒃ', "Value", "Constant has correct value"); is (ref \$::{plუᒃ}, 'GLOB', "Symbol table has full typeglob"); my $gr = eval '\*plუᒃ' or die; { my $w = ''; local $SIG{__WARN__} = sub { $w = $_[0] }; *{$gr} = \&{"оઓnḲ"}; 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)"); } is (ref $::{оઓnḲ}, 'SCALAR', "Export doesn't affect original"); is (eval 'plუᒃ', "Value", "Constant has correct value"); is (ref \$::{plუᒃ}, 'GLOB', "Symbol table has full typeglob"); # Non-void context should defeat the optimisation, and will cause the original # to be promoted (what change 26482 intended) my $result; { my $w = ''; local $SIG{__WARN__} = sub { $w = $_[0] }; $result = *{"aẈʞƙʞƙʞƙ"} = \&{"оઓnḲ"}; is($w, '', "Should be no warning"); } is (ref \$result, 'GLOB', "Non void assignment should still return a typeglob"); is (ref \$::{оઓnḲ}, 'GLOB', "This export does affect original"); is (eval 'plუᒃ', "Value", "Constant has correct value"); is (ref \$::{plუᒃ}, 'GLOB', "Symbol table has full typeglob"); delete $::{оઓnḲ}; $::{оઓnḲ} = \"Value"; sub non_dangling { my $w = ''; local $SIG{__WARN__} = sub { $w = $_[0] }; *{"z앞"} = \&{"оઓnḲ"}; is($w, '', "Should be no warning"); } non_dangling(); is (ref $::{оઓnḲ}, 'SCALAR', "Export doesn't affect original"); is (eval 'z앞', "Value", "Constant has correct value"); is (ref $::{z앞}, 'SCALAR', "Exported target is also a PCS"); sub dangling { local $SIG{__WARN__} = sub { die $_[0] }; *{"ビfᶠ"} = \&{"оઓnḲ"}; } dangling(); is (ref \$::{оઓnḲ}, 'GLOB', "This export does affect original"); is (eval 'ビfᶠ', "Value", "Constant has correct value"); is (ref \$::{ビfᶠ}, 'GLOB', "Symbol table has full typeglob"); { use vars qw($gᓙʞ $sምḲ $ᕘf); # Check reference assignment isn't affected by the SV type (bug #38439) $gᓙʞ = 3; $sምḲ = 4; $ᕘf = "halt and cool down"; my $rv = \*sምḲ; is($gᓙʞ, 3); *gᓙʞ = $rv; is($gᓙʞ, 4); my $pv = ""; $pv = \*sምḲ; is($ᕘf, "halt and cool down"); *ᕘf = $pv; is($ᕘf, 4); } { no warnings 'once'; format = . foreach my $value ({1=>2}, *STDOUT{IO}, *STDOUT{FORMAT}) { # *STDOUT{IO} returns a reference to a PVIO. As it's blessed, ref returns # IO::Handle, which isn't what we want. my $type = $value; $type =~ s/.*=//; $type =~ s/\(.*//; delete $::{оઓnḲ}; $::{оઓnḲ} = $value; $proto = eval 'prototype \&оઓnḲ'; like ($@, qr/^Cannot convert a reference to $type to typeglob/, "Cannot upgrade ref-to-$type to typeglob"); } } { no warnings qw(once uninitialized); my $g = \*ȼલᑧɹ; my $r = eval {no strict; ${*{$g}{SCALAR}}}; is ($@, '', "PERL_DONT_CREATE_GVSV shouldn't affect thingy syntax"); $g = \*vȍwɯ; $r = eval {use strict; ${*{$g}{SCALAR}}}; is ($@, '', "PERL_DONT_CREATE_GVSV shouldn't affect thingy syntax under strict"); } { # Bug reported by broquaint on IRC *ᔅᓗsḨ::{HASH}->{ISA}=[]; ᔅᓗsḨ->import; pass("gv_fetchmeth coped with the unexpected"); # An audit found these: { package ᔅᓗsḨ; sub 맆 { my $s = shift; $s->SUPER::맆; } } { eval {ᔅᓗsḨ->맆;}; like ($@, qr/^Can't locate object method "맆"/, "Even with SUPER"); } is(ᔅᓗsḨ->isa('swoosh'), ''); } { die if exists $::{본ㄎ}; $::{본ㄎ} = \"포ヰｅ"; *{"본ㄎ"} = \&{"본ㄎ"}; eval 'is(본ㄎ(), "포ヰｅ", "Assignment works when glob created midway (bug 45607)"); 1' or die $@; } # [perl #72740] - indirect object syntax, heuristically imputed due to # the non-existence of a function, should not cause a stash entry to be # created for the non-existent function. { { package RƬ72740a; my $f = bless({}, RƬ72740b); sub s1 { s2 $f; } our $s4; sub s3 { s4 $f; } } { package RƬ72740b; sub s2 { "RƬ72740b::s2" } sub s4 { "RƬ72740b::s4" } } ok(exists($RƬ72740a::{s1}), "RƬ72740a::s1 exists"); ok(!exists($RƬ72740a::{s2}), "RƬ72740a::s2 does not exist"); ok(exists($RƬ72740a::{s3}), "RƬ72740a::s3 exists"); ok(exists($RƬ72740a::{s4}), "RƬ72740a::s4 exists"); is(RƬ72740a::s1(), "RƬ72740b::s2", "RƬ72740::s1 parsed correctly"); is(RƬ72740a::s3(), "RƬ72740b::s4", "RƬ72740::s3 parsed correctly"); } # [perl #71686] Globs that are in symbol table can be un-globbed $ŚyṀ = undef; $::{Ḟ앜ɞ} = *ŚyṀ; is (eval 'local *::Ḟ앜ɞ = \"chuck"; $Ḟ앜ɞ', 'chuck', "Localized glob didn't coerce into a RV"); is ($@, '', "Can localize FAKE glob that's present in stash"); { is (scalar $::{Ḟ앜ɞ}, "*main::ŚyṀ", "Localized FAKE glob's value was correctly restored"); } # [perl #1804] *$x assignment when $x is a copy of another glob # And [perl #77508] (same thing with list assignment) { no warnings 'once'; my $x = *_ràndom::glob_that_is_not_used_elsewhere; *$x = sub{}; is( "$x", '*_ràndom::glob_that_is_not_used_elsewhere', '[perl #1804] *$x assignment when $x is FAKE', ); $x = *_ràndom::glob_that_is_not_used_elsewhere; (my $dummy, *$x) = (undef,[]); is( "$x", '*_ràndom::glob_that_is_not_used_elsewhere', '[perl #77508] *$x list assignment when $x is FAKE', ) or require Devel::Peek, Devel::Peek::Dump($x); } # [perl #76540] # this caused panics or 'Attempt to free unreferenced scalar' # (its a compile-time issue, so the die lets us skip the prints) { my @warnings; local $SIG{__WARN__} = sub { push @warnings, @_ }; eval <<'EOF'; BEGIN { $::{FÒÒ} = \'ᴮᛅ' } die "made it"; print FÒÒ, "\n"; print FÒÒ, "\n"; EOF like($@, qr/made it/, "#76540 - no panic"); ok(!@warnings, "#76540 - no 'Attempt to free unreferenced scalar'"); } # [perl #77362] various bugs related to globs as PVLVs { no warnings qw 'once void'; my %h; # We pass a key of this hash to the subroutine to get a PVLV. sub { for(shift) { # Set up our glob-as-PVLV $_ = *hòn; is $_, "*main::hòn"; # Bad symbol for array ok eval{ @$_; 1 }, 'PVLV glob slots can be autovivified' or diag $@; { # This should call TIEHANDLE, not TIESCALAR *thèxt::TIEHANDLE = sub{}; ok eval{ tie *$_, 'thèxt'; 1 }, 'PVLV globs can be tied as handles' or diag $@; } # Assigning undef to the glob should not overwrite it... { my $w; local $SIG{__WARN__} = sub { $w = shift }; *$_ = undef; is $_, "*main::hòn", 'PVLV: assigning undef to the glob does nothing'; like $w, qr\Undefined value assigned to typeglob\, 'PVLV: assigning undef to the glob warns'; } # Neither should reference assignment. *$_ = []; is $_, "*main::hòn", "PVLV: arrayref assignment assigns to the AV slot"; # Concatenation should still work. ok eval { $_ .= 'thlèw' }, 'PVLV concatenation does not die' or diag $@; is $_, '*main::hònthlèw', 'PVLV concatenation works'; # And we should be able to overwrite it with a string, number, or refer- # ence, too, if we omit the *. $_ = *hòn; $_ = 'tzòr'; is $_, 'tzòr', 'PVLV: assigning a string over a glob'; $_ = *hòn; $_ = 23; is $_, 23, 'PVLV: assigning an integer over a glob'; $_ = *hòn; $_ = 23.23; is $_, 23.23, 'PVLV: assigning a float over a glob'; $_ = *hòn; $_ = \my $sthat; is $_, \$sthat, 'PVLV: assigning a reference over a glob'; # This bug was found by code inspection. Could this ever happen in # real life? :-) # This duplicates a file handle, accessing it through a PVLV glob, the # glob having been removed from the symbol table, so a stringified form # of it does not work. This checks that sv_2io does not stringify a PVLV. $_ = *quìn; open *quìn, "test.pl"; # test.pl is as good a file as any delete $::{quìn}; ok eval { open my $zow, "<&", $_ }, 'PVLV: sv_2io stringifieth not' or diag $@; # Similar tests to make sure sv_2cv etc. do not stringify. *$_ = sub { 1 }; ok eval { &$_ }, "PVLV glob can be called as a sub" or diag $@; *flèlp = sub { 2 }; $_ = 'flèlp'; is eval { &$_ }, 2, 'PVLV holding a string can be called as a sub' or diag $@; # Coderef-to-glob assignment when the glob is no longer accessible # under its name: These tests are to make sure the OPpASSIGN_CV_TO_GV # optimisation takes PVLVs into account, which is why the RHSs have to be # named subs. use constant ghèèn => 'quàrè'; $_ = *mìng; delete $::{mìng}; *$_ = \&ghèèn; is eval { &$_ }, 'quàrè', 'PVLV: constant assignment when the glob is detached from the symtab' or diag $@; $_ = *bèngth; delete $::{bèngth}; *ghèck = sub { 'lon' }; *$_ = \&ghèck; is eval { &$_ }, 'lon', 'PVLV: coderef assignment when the glob is detached from the symtab' or diag $@; SKIP: { skip_if_miniperl("no dynamic loading on miniperl, so can't load PerlIO::scalar", 1); # open should accept a PVLV as its first argument $_ = *hòn; ok eval { open $_,'<', \my $thlext }, 'PVLV can be the first arg to open' or diag $@; } # -t should not stringify $_ = *thlìt; delete $::{thlìt}; *$_ = *STDOUT{IO}; ok defined -t $_, 'PVLV: -t does not stringify'; # neither should -T # but some systems don’t support this on file handles my $pass; ok eval { open my $quìle, "<", 'test.pl'; $_ = *$quìle; $pass = -T $_; 1 } ? $pass : $@ =~ /not implemented on filehandles/, "PVLV: -T does not stringify"; # Unopened file handle { my $w; local $SIG{__WARN__} = sub { $w .= shift }; $_ = *vòr; close $_; like $w, qr\unopened filehandle vòr\, 'PVLV globs get their names reported in unopened error messages'; } }}->($h{k}); } *àieee = 4; pass('Can assign integers to typeglobs'); *àieee = 3.14; pass('Can assign floats to typeglobs'); *àieee = 'pi'; pass('Can assign strings to typeglobs'); { package thrèxt; sub TIESCALAR{bless[]} sub STORE{ die "No!"} sub FETCH{ no warnings 'once'; *thrìt } tie my $a, "thrèxt"; () = "$a"; # do a fetch; now $a holds a glob eval { *$a = sub{} }; untie $a; eval { $a = "ᴮᛅ" }; ::is $a, "ᴮᛅ", "[perl #77812] Globs in tied scalars can be reified if STORE dies" } # These two crashed prior to 5.13.6. In 5.13.6 they were fatal errors. They # were fixed in 5.13.7. ok eval { my $glob = \*hèèn::ISA; delete $::{"hèèn::"}; *$glob = *ᴮᛅ; }, "glob-to-*ISA assignment works when *ISA has lost its stash"; ok eval { my $glob = \*slàre::ISA; delete $::{"slàre::"}; *$glob = []; }, "array-to-*ISA assignment works when *ISA has lost its stash"; # These two crashed in 5.13.6. They were likewise fixed in 5.13.7. ok eval { sub grèck; my $glob = do { no warnings "once"; \*phìng::ᕘ}; delete $::{"phìng::"}; *$glob = *grèck; }, "Assigning a glob-with-sub to a glob that has lost its stash warks"; ok eval { sub pòn::ᕘ; my $glob = \*pòn::ᕘ; delete $::{"pòn::"}; *$glob = *ᕘ; }, "Assigning a glob to a glob-with-sub that has lost its stash warks"; { package Tie::Alias; sub TIESCALAR{ bless \\pop } sub FETCH { $${$_[0]} } sub STORE { $${$_[0]} = $_[1] } package main; tie my $alias, 'Tie::Alias', my $var; no warnings 'once'; $var = *gàlobbe; { local *$alias = []; $var = 3; is $alias, 3, "[perl #77926] Glob reification during localisation"; } } # This code causes gp_free to call a destructor when a glob is being # restored on scope exit. The destructor used to see SVs with a refcount of # zero inside the glob, which could result in crashes (though not in this # test case, which just panics). { no warnings 'once'; my $survived; *Trìt::DESTROY = sub { $thwèxt = 42; # panic $survived = 1; }; { local *thwèxt = bless [],'Trìt'; (); } ok $survived, 'no error when gp_free calls a destructor that assigns to the gv'; } __END__ Perl Rules perl rocks