#!./perl
BEGIN {
chdir 't' if -d 't';
@INC = qw(../lib);
}
BEGIN { require "./test.pl"; }
plan( tests => 58 );
# Used to segfault (bug #15479)
fresh_perl_like(
'delete $::{STDERR}; my %a = ""',
qr/Odd number of elements in hash assignment at - line 1\./,
{ switches => [ '-w' ] },
'delete $::{STDERR} and print a warning',
);
# Used to segfault
fresh_perl_is(
'BEGIN { $::{"X::"} = 2 }',
'',
{ switches => [ '-w' ] },
q(Insert a non-GV in a stash, under warnings 'once'),
);
# Used to segfault, too
SKIP: {
skip_if_miniperl('requires XS');
fresh_perl_like(
'sub foo::bar{}; $mro::{get_mro}=*foo::bar; undef %foo::; require mro',
qr/^Subroutine mro::get_mro redefined at /,
{ switches => [ '-w' ] },
q(Defining an XSUB over an existing sub with no stash under warnings),
);
}
{
no warnings 'deprecated';
ok( defined %oedipa::maas::, q(stashes happen to be defined if not used) );
ok( defined %{"oedipa::maas::"}, q(- work with hard refs too) );
ok( defined %tyrone::slothrop::, q(stashes are defined if seen at compile time) );
ok( defined %{"tyrone::slothrop::"}, q(- work with hard refs too) );
ok( defined %bongo::shaftsbury::, q(stashes are defined if a var is seen at compile time) );
ok( defined %{"bongo::shaftsbury::"}, q(- work with hard refs too) );
}
package tyrone::slothrop;
$bongo::shaftsbury::scalar = 1;
package main;
# Used to warn
# Unbalanced string table refcount: (1) for "A::" during global destruction.
# for ithreads.
{
local $ENV{PERL_DESTRUCT_LEVEL} = 2;
fresh_perl_is(
'package A::B; sub a { // }; %A::=""',
'',
'',
);
# Variant of the above which creates an object that persists until global
# destruction, and triggers an assertion failure prior to change
# a420522db95b7762
fresh_perl_is(
'use Exporter; package A; sub a { // }; delete $::{$_} for keys %::',
'',
'',
);
}
# now tests in eval
ok( eval { no warnings 'deprecated'; defined %achtfaden:: }, 'works in eval{}' );
ok( eval q{ no warnings 'deprecated'; defined %schoenmaker:: }, 'works in eval("")' );
# now tests with strictures
{
use strict;
no warnings 'deprecated';
ok( defined %pig::, q(referencing a non-existent stash doesn't produce stricture errors) );
ok( !exists $pig::{bodine}, q(referencing a non-existent stash element doesn't produce stricture errors) );
}
SKIP: {
eval { require B; 1 } or skip "no B", 29;
*b = \&B::svref_2object;
my $CVf_ANON = B::CVf_ANON();
my $sub = do {
package one;
\&{"one"};
};
delete $one::{one};
my $gv = b($sub)->GV;
object_ok( $gv, "B::GV", "deleted stash entry leaves CV with valid GV");
is( b($sub)->CvFLAGS & $CVf_ANON, $CVf_ANON, "...and CVf_ANON set");
is( eval { $gv->NAME }, "__ANON__", "...and an __ANON__ name");
is( eval { $gv->STASH->NAME }, "one", "...but leaves stash intact");
$sub = do {
package two;
\&{"two"};
};
%two:: = ();
$gv = b($sub)->GV;
object_ok( $gv, "B::GV", "cleared stash leaves CV with valid GV");
is( b($sub)->CvFLAGS & $CVf_ANON, $CVf_ANON, "...and CVf_ANON set");
is( eval { $gv->NAME }, "__ANON__", "...and an __ANON__ name");
is( eval { $gv->STASH->NAME }, "two", "...but leaves stash intact");
$sub = do {
package three;
\&{"three"};
};
undef %three::;
$gv = b($sub)->GV;
object_ok( $gv, "B::GV", "undefed stash leaves CV with valid GV");
is( b($sub)->CvFLAGS & $CVf_ANON, $CVf_ANON, "...and CVf_ANON set");
is( eval { $gv->NAME }, "__ANON__", "...and an __ANON__ name");
is( eval { $gv->STASH->NAME }, "__ANON__", "...and an __ANON__ stash");
my $sub = do {
package four;
sub { 1 };
};
%four:: = ();
my $gv = B::svref_2object($sub)->GV;
ok($gv->isa(q/B::GV/), "cleared stash leaves anon CV with valid GV");
my $st = eval { $gv->STASH->NAME };
is($st, q/four/, "...but leaves the stash intact");
my $sub = do {
package five;
sub { 1 };
};
undef %five::;
$gv = B::svref_2object($sub)->GV;
ok($gv->isa(q/B::GV/), "undefed stash leaves anon CV with valid GV");
$st = eval { $gv->STASH->NAME };
{ local $TODO = 'STASHES not anonymized';
is($st, q/__ANON__/, "...and an __ANON__ stash");
}
my $sub = do {
package six;
\&{"six"}
};
my $stash_glob = delete $::{"six::"};
# Now free the GV while the stash still exists (though detached)
delete $$stash_glob{"six"};
$gv = B::svref_2object($sub)->GV;
ok($gv->isa(q/B::GV/),
'anonymised CV whose stash is detached still has a GV');
is $gv->STASH->NAME, '__ANON__',
'CV anonymised when its stash is detached becomes __ANON__::__ANON__';
# CvSTASH should be null on a named sub if the stash has been deleted
{
package FOO;
sub foo {}
my $rfoo = \&foo;
package main;
delete $::{'FOO::'};
my $cv = B::svref_2object($rfoo);
# (is there a better way of testing for NULL ?)
my $stash = $cv->STASH;
like($stash, qr/B::SPECIAL/, "NULL CvSTASH on named sub");
}
# on glob reassignment, orphaned CV should have anon CvGV
{
my $r;
eval q[
package FOO2;
sub f{};
$r = \&f;
*f = sub {};
];
delete $FOO2::{f};
my $cv = B::svref_2object($r);
my $gv = $cv->GV;
ok($gv->isa(q/B::GV/), "orphaned CV has valid GV");
is($gv->NAME, '__ANON__', "orphaned CV has anon GV");
}
# deleting __ANON__ glob shouldn't break things
{
package FOO3;
sub named {};
my $anon = sub {};
my $named = eval q[\&named];
package main;
delete $FOO3::{named}; # make named anonymous
delete $FOO3::{__ANON__}; # whoops!
my ($cv,$gv);
$cv = B::svref_2object($named);
$gv = $cv->GV;
ok($gv->isa(q/B::GV/), "ex-named CV has valid GV");
is($gv->NAME, '__ANON__', "ex-named CV has anon GV");
$cv = B::svref_2object($anon);
$gv = $cv->GV;
ok($gv->isa(q/B::GV/), "anon CV has valid GV");
is($gv->NAME, '__ANON__', "anon CV has anon GV");
}
{
my $r;
{
package bloop;
BEGIN {
$r = \&main::whack;
}
}
my $br = B::svref_2object($r);
is ($br->STASH->NAME, 'bloop',
'stub records the package it was compiled in');
# Arguably this shouldn't quite be here, but it's easy to add it
# here, and tricky to figure out a different good place for it.
like ($br->FILE, qr/stash/i,
'stub records the file it was compiled in');
# We need to take this reference "late", after the subroutine is
# defined.
$br = B::svref_2object(eval 'sub whack {}; \&whack');
die $@ if $@;
is ($br->STASH->NAME, 'main',
'definition overrides the package it was compiled in');
like ($br->FILE, qr/eval/,
'definition overrides the file it was compiled in');
}
}
# [perl #58530]
fresh_perl_is(
'sub foo { 1 }; use overload q/""/ => \&foo;' .
'delete $main::{foo}; bless []',
"",
{},
"no segfault with overload/deleted stash entry [#58530]",
);
# make sure having a sub called __ANON__ doesn't confuse perl.
{
my $c;
sub __ANON__ { $c = (caller(0))[3]; }
__ANON__();
is ($c, 'main::__ANON__', '__ANON__ sub called ok');
}
# Stashes that are effectively renamed
{
package rile;
use Config;
my $obj = bless [];
my $globref = \*tat;
# effectively rename a stash
*slin:: = *rile::; *rile:: = *zor::;
::is *$globref, "*rile::tat",
'globs stringify the same way when stashes are moved';
::is ref $obj, "rile",
'ref() returns the same thing when an object’s stash is moved';
::like "$obj", qr "^rile=ARRAY\(0x[\da-f]+\)\z",
'objects stringify the same way when their stashes are moved';
::is eval '__PACKAGE__', 'rile',
'__PACKAGE__ returns the same when the current stash is moved';
# Now detach it completely from the symtab, making it effect-
# ively anonymous
my $life_raft = \%slin::;
*slin:: = *zor::;
::is *$globref, "*rile::tat",
'globs stringify the same way when stashes are detached';
::is ref $obj, "rile",
'ref() returns the same thing when an object’s stash is detached';
::like "$obj", qr "^rile=ARRAY\(0x[\da-f]+\)\z",
'objects stringify the same way when their stashes are detached';
::is eval '__PACKAGE__', 'rile',
'__PACKAGE__ returns the same when the current stash is detached';
}
# Setting the name during undef %stash:: should have no effect.
{
my $glob = \*Phoo::glob;
sub o::DESTROY { eval '++$Phoo::bar' }
no strict 'refs';
${"Phoo::thing1"} = bless [], "o";
undef %Phoo::;
is "$$glob", "*__ANON__::glob",
"setting stash name during undef has no effect";
}
# [perl #88134] incorrect package structure
{
package Bear::;
sub baz{1}
package main;
ok eval { Bear::::baz() },
'packages ending with :: are self-consistent';
}
# [perl #88138] ' not equivalent to :: before a null
${"a'\0b"} = "c";
is ${"a::\0b"}, "c", "' is equivalent to :: before a null";
# [perl #101486] Clobbering the current package
ok eval '
package Do;
BEGIN { *Do:: = *Re:: }
sub foo{};
1
', 'no crashing or errors when clobbering the current package';