BEGIN {
chdir 't' if -d 't';
- @INC = '../lib';
+ require './test.pl';
+ set_up_inc('../lib');
}
use warnings;
-require './test.pl';
-plan( tests => 192 );
+plan( tests => 273 );
-# type coersion on assignment
+# type coercion on assignment
$foo = 'foo';
$bar = *main::foo;
$bar = $foo;
is(ref(\$bar), 'SCALAR');
$foo = *main::bar;
-# type coersion (not) on misc ops
+# type coercion (not) on misc ops
ok($foo);
is(ref(\$foo), 'GLOB');
is($foo, '*main::bar');
is(ref(\$foo), 'GLOB');
-# type coersion on substitutions that match
+{
+ no warnings;
+ ${\*$foo} = undef;
+ is(ref(\$foo), 'GLOB', 'no type coercion when assigning to *{} retval');
+ $::{phake} = *bar;
+ is(
+ \$::{phake}, \*{"phake"},
+ 'symbolic *{} returns symtab entry when FAKE'
+ );
+ ${\*{"phake"}} = undef;
+ is(
+ ref(\$::{phake}), 'GLOB',
+ 'no type coercion when assigning to retval of symbolic *{}'
+ );
+ $::{phaque} = *bar;
+ eval '
+ is(
+ \$::{phaque}, \*phaque,
+ "compile-time *{} returns symtab entry when FAKE"
+ );
+ ${\*phaque} = undef;
+ ';
+ is(
+ ref(\$::{phaque}), 'GLOB',
+ 'no type coercion when assigning to retval of compile-time *{}'
+ );
+}
+
+# type coercion on substitutions that match
$a = *main::foo;
$b = $a;
$a =~ s/^X//;
curr_test($test);
is (ref *x{FORMAT}, "FORMAT");
+is ("@{sub { *_{ARRAY} }->(1..3)}", "1 2 3",
+ 'returning *_{ARRAY} from sub');
*x = *STDOUT;
is (*{*x{GLOB}}, "*main::STDOUT");
curr_test(++$test);
}
+is *x{NAME}, 'x', '*foo{NAME}';
+is *x{PACKAGE}, 'main', '*foo{PACKAGE}';
+{ no warnings 'once'; *x = *Foo::y; }
+is *x, '*Foo::y', 'glob stringifies as assignee after glob-to-glob assign';
+is *x{NAME}, 'x', 'but *foo{NAME} still returns the original name';
+is *x{PACKAGE}, 'main', 'and *foo{PACKAGE} the original package';
{
# test if defined() doesn't create any new symbols
my $a = "SYM000";
ok(!defined *{$a});
- ok(!defined @{$a});
- ok(!defined *{$a});
-
- {
- no warnings 'deprecated';
- ok(!defined %{$a});
- }
- ok(!defined *{$a});
-
ok(!defined ${$a});
ok(!defined *{$a});
# although it *should* if you're talking about magicals
my $a = "]";
- ok(defined ${$a});
ok(defined *{$a});
+ ok(defined ${$a});
$a = "1";
"o" =~ /(o)/;
# test the assignment of a GLOB to an LVALUE
my $e = '';
local $SIG{__DIE__} = sub { $e = $_[0] };
- my $v;
+ my %v;
sub f { $_[0] = 0; $_[0] = "a"; $_[0] = *DATA }
- f($v);
- is ($v, '*main::DATA');
- my $x = <$v>;
+ f($v{v});
+ is ($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');
}
{
- $e = '';
+ my $e = '';
# GLOB assignment to tied element
local $SIG{__DIE__} = sub { $e = $_[0] };
sub T::TIEARRAY { bless [] => "T" }
tie my @ary => "T";
$ary[0] = *DATA;
is ($ary[0], '*main::DATA');
- is ($e, '');
+ is (
+ ref\tied(@ary)->[0], 'GLOB',
+ 'tied elem assignment preserves globs'
+ );
+ is ($e, '', '__DIE__ handler not called');
my $x = readline $ary[0];
is($x, "rocks\n");
+ is ($e, '', '__DIE__ handler never called');
}
{
sub DESTROY {eval {die qq{Farewell $_[0]}}; print $@}
package main;
-bless \$A::B, 'M';
+bless \$A::B, q{M};
*A:: = \*B::;
EOPROG
like($output, qr/^Farewell M=SCALAR/, "DESTROY was called");
is (ref $::{oonk}, 'SCALAR', "Export doesn't affect original");
is (eval 'ga_shloip', "Value", "Constant has correct value");
is (ref $::{ga_shloip}, 'SCALAR',
- "Inlining of constant doesn't change represenatation");
+ "Inlining of constant doesn't change representation");
delete $::{ga_shloip};
is (eval 'biff', "Value", "Constant has correct value");
is (ref \$::{biff}, 'GLOB', "Symbol table has full typeglob");
+$::{yarrow} = [4,5,6];
+is join("-", eval "yarrow()"), '4-5-6', 'array ref as stash elem';
+is ref $::{yarrow}, "ARRAY", 'stash elem is still array ref after use';
+is join("-", eval "&yarrow"), '4-5-6', 'calling const list with &';
+is join("-", eval "&yarrow(1..10)"), '4-5-6', 'const list ignores & args';
+is prototype "yarrow", "", 'const list has "" prototype';
+is eval "yarrow", 3, 'const list in scalar cx returns length';
+
+$::{borage} = \&ok;
+eval 'borage("sub ref in stash")' or fail "sub ref in stash";
+
{
use vars qw($glook $smek $foof);
# Check reference assignment isn't affected by the SV type (bug #38439)
format =
.
-foreach my $value ([1,2,3], {1=>2}, *STDOUT{IO}, \&ok, *STDOUT{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;
$::{BONK} = \"powie";
*{"BONK"} = \&{"BONK"};
eval 'is(BONK(), "powie",
- "Assigment works when glob created midway (bug 45607)"); 1'
+ "Assignment works when glob created midway (bug 45607)"); 1'
or die $@;
}
"with the correct error message");
}
-# RT #60954 anonymous glob should be defined, and not coredump when
+# RT #65582 anonymous glob should be defined, and not coredump when
# stringified. The behaviours are:
#
-# defined($glob) "$glob"
-# 5.8.8 false "" with uninit warning
-# 5.10.0 true (coredump)
-# 5.12.0 true ""
+# defined($glob) "$glob" $glob .= ...
+# 5.8.8 false "" with uninit warning "" with uninit warning
+# 5.10.0 true (coredump) (coredump)
+# 5.1[24] true "" "" with uninit warning
+# 5.16 true "*__ANON__::..." "*__ANON__::..."
{
my $io_ref = *STDOUT{IO};
my $glob = *$io_ref;
- ok(defined $glob, "RT #60954 anon glob should be defined");
+ ok(defined $glob, "RT #65582 anon glob should be defined");
my $warn = '';
local $SIG{__WARN__} = sub { $warn = $_[0] };
use warnings;
my $str = "$glob";
- is($warn, '', "RT #60954 anon glob stringification shouln't warn");
- is($str, '', "RT #60954 anon glob stringification should be empty");
+ is($warn, '', "RT #65582 anon glob stringification shouldn't warn");
+ is($str, '*__ANON__::__ANONIO__',
+ "RT #65582/#96326 anon glob stringification");
}
+# Another stringification bug: Test that recursion does not cause lexical
+# handles to lose their names.
+sub r {
+ my @output;
+ @output = r($_[0]-1) if $_[0];
+ open my $fh, "TEST";
+ push @output, $$fh;
+ close $fh;
+ @output;
+}
+is join(' ', r(4)),
+ '*main::$fh *main::$fh *main::$fh *main::$fh *main::$fh',
+ 'recursion does not cause lex handles to lose their names';
+
+# And sub cloning, too; not just recursion
+my $close_over_me;
+is join(' ', sub {
+ () = $close_over_me;
+ my @output;
+ @output = CORE::__SUB__->($_[0]-1) if $_[0];
+ open my $fh, "TEST";
+ push @output, $$fh;
+ close $fh;
+ @output;
+ }->(4)),
+ '*main::$fh *main::$fh *main::$fh *main::$fh *main::$fh',
+ 'sub cloning does not cause lex handles to lose their names';
+
# [perl #71254] - Assigning a glob to a variable that has a current
# match position. (We are testing that Perl_magic_setmglob respects globs'
# special used of SvSCREAM.)
"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 $x = *_random::glob_that_is_not_used_elsewhere;
"$x", '*_random::glob_that_is_not_used_elsewhere',
'[perl #1804] *$x assignment when $x is FAKE',
);
+ $x = *_random::glob_that_is_not_used_elsewhere;
+ (my $dummy, *$x) = (undef,[]);
+ is(
+ "$x", '*_random::glob_that_is_not_used_elsewhere',
+ '[perl #77508] *$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 { $::{FOO} = \'bar' }
+die "made it";
+print FOO, "\n";
+print FOO, "\n";
+EOF
+
+ like($@, 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
+ $_ = *hon;
+
+ # Bad symbol for array
+ ok eval{ @$_; 1 }, 'PVLV glob slots can be autovivified' or diag $@;
+
+ # This should call TIEHANDLE, not TIESCALAR
+ *thext::TIEHANDLE = sub{};
+ ok eval{ tie *$_, 'thext'; 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::hon", '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::hon", "PVLV: arrayref assignment assigns to the AV slot";
+
+ # Concatenation should still work.
+ ok eval { $_ .= 'thlew' }, 'PVLV concatenation does not die' or diag $@;
+ is $_, '*main::honthlew', 'PVLV concatenation works';
+
+ # And we should be able to overwrite it with a string, number, or refer-
+ # ence, too, if we omit the *.
+ $_ = *hon; $_ = 'tzor';
+ is $_, 'tzor', 'PVLV: assigning a string over a glob';
+ $_ = *hon; $_ = 23;
+ is $_, 23, 'PVLV: assigning an integer over a glob';
+ $_ = *hon; $_ = 23.23;
+ is $_, 23.23, 'PVLV: assigning a float over a glob';
+ $_ = *hon; $_ = \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.
+ $_ = *quin;
+ open *quin, "test.pl"; # test.pl is as good a file as any
+ delete $::{quin};
+ 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 $@;
+ *flelp = sub { 2 };
+ $_ = 'flelp';
+ is eval { &$_ }, 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 gheen => 'quare';
+ $_ = *ming;
+ delete $::{ming};
+ *$_ = \&gheen;
+ is eval { &$_ }, 'quare',
+ 'PVLV: constant assignment when the glob is detached from the symtab'
+ or diag $@;
+ $_ = *bength;
+ delete $::{bength};
+ *gheck = sub { 'lon' };
+ *$_ = \&gheck;
+ 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
+ $_ = *hon;
+ ok eval { open $_,'<', \my $thlext }, 'PVLV can be the first arg to open'
+ or diag $@;
+ }
+
+ # -t should not stringify
+ $_ = *thlit; delete $::{thlit};
+ *$_ = *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 $quile, "<", 'test.pl';
+ $_ = *$quile;
+ $pass = -T $_;
+ 1
+ } ? $pass : $@ =~ /not implemented on filehandles/,
+ "PVLV: -T does not stringify";
+
+ # Unopened file handle
+ {
+ my $w;
+ local $SIG{__WARN__} = sub { $w .= shift };
+ $_ = *vor;
+ close $_;
+ like $w, qr\unopened filehandle vor\,
+ 'PVLV globs get their names reported in unopened error messages';
+ }
+
+ }}->($h{k});
+}
+
+*aieee = 4;
+pass('Can assign integers to typeglobs');
+*aieee = 3.14;
+pass('Can assign floats to typeglobs');
+*aieee = 'pi';
+pass('Can assign strings to typeglobs');
+
+{
+ package thrext;
+ sub TIESCALAR{bless[]}
+ sub STORE{ die "No!"}
+ sub FETCH{ no warnings 'once'; *thrit }
+ tie my $a, "thrext";
+ () = "$a"; # do a fetch; now $a holds a glob
+ eval { *$a = sub{} };
+ untie $a;
+ eval { $a = "bar" };
+ ::is $a, "bar",
+ "[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 = \*heen::ISA;
+ delete $::{"heen::"};
+ *$glob = *bar;
+}, "glob-to-*ISA assignment works when *ISA has lost its stash";
+ok eval {
+ my $glob = \*slare::ISA;
+ delete $::{"slare::"};
+ *$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 greck;
+ my $glob = do { no warnings "once"; \*phing::foo};
+ delete $::{"phing::"};
+ *$glob = *greck;
+}, "Assigning a glob-with-sub to a glob that has lost its stash works";
+ok eval {
+ sub pon::foo;
+ my $glob = \*pon::foo;
+ delete $::{"pon::"};
+ *$glob = *foo;
+}, "Assigning a glob to a glob-with-sub that has lost its stash works";
+
+{
+ 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';
+ $var = *galobbe;
+ {
+ local *$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;
+ *Trit::DESTROY = sub {
+ $thwext = 42; # panic
+ $survived = 1;
+ };
+ {
+ local *thwext;
+ $thwext = bless[],'Trit';
+ ();
+ }
+ ok $survived,
+ 'no error when gp_free calls a destructor that assigns to the gv';
+}
+
+# This is a similar test, for destructors seeing a GV without a reference
+# count on its gp.
+sub undefine_me_if_you_dare {}
+bless \&undefine_me_if_you_dare, "Undefiner";
+sub Undefiner::DESTROY {
+ undef *undefine_me_if_you_dare;
+}
+{
+ my $w;
+ local $SIG{__WARN__} = sub { $w .= shift };
+ undef *undefine_me_if_you_dare;
+ is $w, undef,
+ 'undeffing a gv in DESTROY triggered by undeffing the same gv'
+}
+
+# [perl #121242]
+# More gp_free madness. gp_free could call a destructor that frees the gv
+# whose gp is being freed.
+sub Fred::AUTOLOAD { $Fred::AUTOLOAD }
+undef *{"Fred::AUTOLOAD"};
+pass 'no crash from gp_free triggering gv_try_downgrade';
+sub _121242::DESTROY { delete $_121242::{$_[0][0]} };
+${"_121242::foo"} = bless ["foo"], _121242::;
+undef *{"_121242::foo"};
+pass 'no crash from pp_undef/gp_free freeing the gv';
+${"_121242::bar"} = bless ["bar"], _121242::;
+*{"_121242::bar"} = "bar";
+pass 'no crash from sv_setsv/gp_free freeing the gv';
+${"_121242::baz"} = bless ["baz"], _121242::;
+*{"_121242::baz"} = *foo;
+pass 'no crash from glob_assign_glob/gp_free freeing the gv';
+{
+ my $foo;
+ undef *_121242::DESTROY;
+ *_121242::DESTROY = sub { undef $foo };
+ my $set_up_foo = sub {
+ # Make $$foo into a fake glob whose array slot holds a blessed
+ # array that undefines $foo, freeing the fake glob.
+ $foo = undef;
+ $$foo = do {local *bar};
+ *$$foo = bless [], _121242::;
+ };
+ &$set_up_foo;
+ $$foo = 3;
+ pass 'no crash from sv_setsv/sv_unglob/gp_free freeing the gv';
+ &$set_up_foo;
+ utf8::encode $$foo;
+ pass 'no crash from sv_utf8_encode/sv_unglob/gp_free freeing the gv';
+ &$set_up_foo;
+ open BAR, "TEST";
+ $$foo .= <BAR>;
+ pass 'no crash from do_readline/sv_unglob/gp_free freeing the gv';
+ close BAR;
+ &$set_up_foo;
+ $$foo .= 3;
+ pass 'no crash from pp_concat/sv_unglob/gp_free freeing the gv';
+ &$set_up_foo;
+ no warnings;
+ $$foo++;
+ pass 'no crash from sv_inc/sv_unglob/gp_free freeing the gv';
+ &$set_up_foo;
+ $$foo--;
+ pass 'no crash from sv_dec/sv_unglob/gp_free freeing the gv';
+ &$set_up_foo;
+ undef $$foo;
+ pass 'no crash from pp_undef/sv_unglob/gp_free freeing the gv';
+ $foo = undef;
+ $$foo = 3;
+ $$foo =~ s/3/$$foo = do {local *bar}; *$$foo = bless [],_121242::; 4/e;
+ pass 'no crash from pp_substcont/sv_unglob/gp_free freeing the gv';
+}
+
+# *{undef}
+eval { *{my $undef} = 3 };
+like $@, qr/^Can't use an undefined value as a symbol reference at /,
+ '*{ $undef } assignment';
+eval { *{;undef} = 3 };
+like $@, qr/^Can't use an undefined value as a symbol reference at /,
+ '*{ ;undef } assignment';
+
+# [perl #99142] defined &{"foo"} when there is a constant stub
+# If I break your module, you get to have it mentioned in Perl's tests. :-)
+package HTTP::MobileAttribute::Plugin::Locator {
+ use constant LOCATOR_GPS => 1;
+ ::ok defined &{__PACKAGE__."::LOCATOR_GPS"},
+ 'defined &{"name of constant"}';
+ ::ok Internals::SvREFCNT(${__PACKAGE__."::"}{LOCATOR_GPS}),
+ "stash elem for slot is not freed prematurely";
}
+# Check that constants promoted to CVs point to the right GVs when the name
+# contains a null.
+package lrcg {
+ use constant x => 3;
+ # These two lines abuse the optimisation that copies the scalar ref from
+ # one stash element to another, to get a constant with a null in its name
+ *{"yz\0a"} = \&{"x"};
+ my $ref = \&{"yz\0a"};
+ ::ok !exists $lrcg::{yz},
+ 'constants w/nulls in their names point 2 the right GVs when promoted';
+}
+
+{
+ no warnings 'io';
+ stat *{"try_downgrade"};
+ -T _;
+ $bang = $!;
+ eval "*try_downgrade if 0";
+ -T _;
+ is "$!",$bang,
+ 'try_downgrade does not touch PL_statgv (last stat handle)';
+ readline *{"try_downgrade2"};
+ my $lastfh = "${^LAST_FH}";
+ eval "*try_downgrade2 if 0";
+ is ${^LAST_FH}, $lastfh, 'try_downgrade does not touch PL_last_in_gv';
+}
+
+is runperl(prog => '$s = STDERR; close $s; undef *$s;'
+ .'eval q-*STDERR if 0-; *$s = *STDOUT{IO}; warn'),
+ "Warning: something's wrong at -e line 1.\n",
+ "try_downgrade does not touch PL_stderrgv";
+
+is runperl(prog =>
+ 'use constant foo=>1; BEGIN { $x = \&foo } undef &$x; $x->()',
+ stderr=>1),
+ "Undefined subroutine &main::foo called at -e line 1.\n",
+ "gv_try_downgrade does not anonymise CVs referenced elsewhere";
+
+SKIP: {
+ skip_if_miniperl("no dynamic loading on miniperl, so can't load IO::File", 4);
+
+package glob_constant_test {
+ sub foo { 42 }
+ use constant bar => *foo;
+ BEGIN { undef *foo }
+ ::is eval { bar->() }, eval { &{+bar} },
+ 'glob_constant->() is not mangled at compile time';
+ ::is "$@", "", 'no error from eval { &{+glob_constant} }';
+ use constant quux => do {
+ local *F;
+ my $f = *F;
+ *$f = *STDOUT{IO};
+ };
+ ::is eval { quux->autoflush; 420 }, 420,
+ 'glob_constant->method() works';
+ ::is "$@", "", 'no error from eval { glob_constant->method() }';
+}
+
+}
+
+{
+ my $free2;
+ local $SIG{__WARN__} = sub { ++$free2 if shift =~ /Attempt to free/ };
+ my $handleref;
+ my $proxy = \$handleref;
+ open $$proxy, "TEST";
+ delete $::{*$handleref{NAME}}; # delete *main::_GEN_xxx
+ undef $handleref;
+ is $free2, undef,
+ 'no double free because of bad rv2gv/newGVgen refcounting';
+}
+
+# Look away, please.
+# This violates perl's internal structures by fiddling with stashes in a
+# way that should never happen, but perl should not start trying to free
+# unallocated memory as a result. There is no ok() or is() because the
+# panic that used to occur only occurred during global destruction, and
+# only with PERL_DESTRUCT_LEVEL=2. (The panic itself was sufficient for
+# the harness to consider this test script to have failed.)
+$::{aoeuaoeuaoeaoeu} = __PACKAGE__; # cow
+() = *{"aoeuaoeuaoeaoeu"};
+
+$x = *_119051;
+$y = \&$x;
+undef $x;
+eval { &$y };
+pass "No crash due to CvGV(vivified stub) pointing to flattened glob copy";
+# Not really supported, but this should not crash either:
+$x = *_119051again;
+delete $::{_119051again};
+$::{_119051again} = $x; # now we have a fake glob under the right name
+$y = \&$x; # so when this tries to look up the right GV for
+undef $::{_119051again}; # CvGV, it still gets a fake one
+eval { $y->() };
+pass "No crash due to CvGV pointing to glob copy in the stash";
+
+# Aliasing should disable no-common-vars optimisation.
+{
+ *x = *y;
+ $x = 3;
+ ($x, my $z) = (1, $y);
+ is $z, 3, 'list assignment after aliasing [perl #89646]';
+}
+
+
__END__
Perl
Rules
https://perl5.git.perl.org / perl5.git / blobdiff