BEGIN {
chdir 't' if -d 't';
@INC = '../lib';
+ require './test.pl';
}
use warnings;
-require './test.pl';
-plan( tests => 134 );
+plan( tests => 231 );
# type coersion on assignment
$foo = 'foo';
is($foo, '*main::bar');
is(ref(\$foo), 'GLOB');
+{
+ no warnings;
+ ${\*$foo} = undef;
+ is(ref(\$foo), 'GLOB', 'no type coersion when assigning to *{} retval');
+ $::{phake} = *bar;
+ is(
+ \$::{phake}, \*{"phake"},
+ 'symbolic *{} returns symtab entry when FAKE'
+ );
+ ${\*{"phake"}} = undef;
+ is(
+ ref(\$::{phake}), 'GLOB',
+ 'no type coersion 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 coersion when assigning to retval of compile-time *{}'
+ );
+}
+
# type coersion on substitutions that match
$a = *main::foo;
$b = $a;
is($msg, '');
*foo = undef;
like($msg, qr/Undefined value assigned to typeglob/);
+
+ no warnings 'once';
+ # test warnings for converting globs to other forms
+ my $copy = *PWOMPF;
+ foreach ($copy, *SKREEE) {
+ $msg = '';
+ my $victim = sprintf "%d", $_;
+ like($msg, qr/Argument "\*main::[A-Z]{6}" isn't numeric in sprintf/,
+ "Warning on conversion to IV");
+ is($victim, 0);
+
+ $msg = '';
+ $victim = sprintf "%u", $_;
+ like($msg, qr/Argument "\*main::[A-Z]{6}" isn't numeric in sprintf/,
+ "Warning on conversion to UV");
+ is($victim, 0);
+
+ $msg = '';
+ $victim = sprintf "%e", $_;
+ like($msg, qr/Argument "\*main::[A-Z]{6}" isn't numeric in sprintf/,
+ "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 $test = curr_test();
ok(!defined @{$a});
ok(!defined *{$a});
- ok(!defined %{$a});
+ {
+ no warnings 'deprecated';
+ ok(!defined %{$a});
+ }
ok(!defined *{$a});
ok(!defined ${$a});
# 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");
}
tie my @ary => "T";
$ary[0] = *DATA;
is ($ary[0], '*main::DATA');
+ is (
+ ref\tied(@ary)->[0], 'GLOB',
+ 'tied elem assignment preserves globs'
+ );
is ($e, '');
my $x = readline $ary[0];
is($x, "rocks\n");
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 'spritsits', "Value", "Constant has correct value");
is (ref \$::{spritsits}, 'GLOB', "Symbol table has full typeglob");
-my $result;
# Check that assignment to an existing typeglob works
{
my $w = '';
local $SIG{__WARN__} = sub { $w = $_[0] };
- $result = *{"plunk"} = \&{"oonk"};
+ *{"plunk"} = [];
+ *{"plunk"} = \&{"oonk"};
is($w, '', "Should be no warning");
}
-is (ref \$result, 'GLOB',
- "Non void assignment should still return a typeglob");
-
is (ref $::{oonk}, 'SCALAR', "Export doesn't affect original");
is (eval 'plunk', "Value", "Constant has correct value");
is (ref \$::{plunk}, 'GLOB', "Symbol table has full typeglob");
{
my $w = '';
local $SIG{__WARN__} = sub { $w = $_[0] };
- $result = *{$gr} = \&{"oonk"};
+ *{$gr} = \&{"oonk"};
is($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 (eval 'plunk', "Value", "Constant has correct value");
is (ref \$::{plunk}, '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] };
+ $result = *{"awkkkkkk"} = \&{"oonk"};
+ is($w, '', "Should be no warning");
+}
+
+is (ref \$result, 'GLOB',
+ "Non void assignment should still return a typeglob");
+
+is (ref \$::{oonk}, 'GLOB', "This export does affect original");
+is (eval 'plunk', "Value", "Constant has correct value");
+is (ref \$::{plunk}, 'GLOB', "Symbol table has full typeglob");
+
+delete $::{oonk};
+$::{oonk} = \"Value";
+
+sub non_dangling {
+ my $w = '';
+ local $SIG{__WARN__} = sub { $w = $_[0] };
+ *{"zap"} = \&{"oonk"};
+ is($w, '', "Should be no warning");
+}
+
+non_dangling();
+is (ref $::{oonk}, 'SCALAR', "Export doesn't affect original");
+is (eval 'zap', "Value", "Constant has correct value");
+is (ref $::{zap}, 'SCALAR', "Exported target is also a PCS");
+
+sub dangling {
+ local $SIG{__WARN__} = sub { die $_[0] };
+ *{"biff"} = \&{"oonk"};
+}
+
+dangling();
+is (ref \$::{oonk}, 'GLOB', "This export does affect original");
+is (eval 'biff', "Value", "Constant has correct value");
+is (ref \$::{biff}, 'GLOB', "Symbol table has full typeglob");
+
+{
+ use vars qw($glook $smek $foof);
+ # Check reference assignment isn't affected by the SV type (bug #38439)
+ $glook = 3;
+ $smek = 4;
+ $foof = "halt and cool down";
+
+ my $rv = \*smek;
+ is($glook, 3);
+ *glook = $rv;
+ is($glook, 4);
+
+ my $pv = "";
+ $pv = \*smek;
+ is($foof, "halt and cool down");
+ *foof = $pv;
+ is($foof, 4);
+}
+
format =
.
"PERL_DONT_CREATE_GVSV shouldn't affect thingy syntax under strict");
}
+{
+ # Bug reported by broquaint on IRC
+ *slosh::{HASH}->{ISA}=[];
+ slosh->import;
+ pass("gv_fetchmeth coped with the unexpected");
+
+ # An audit found these:
+ {
+ package slosh;
+ sub rip {
+ my $s = shift;
+ $s->SUPER::rip;
+ }
+ }
+ eval {slosh->rip;};
+ like ($@, qr/^Can't locate object method "rip"/, "Even with SUPER");
+
+ is(slosh->isa('swoosh'), '');
+
+ $CORE::GLOBAL::{"lock"}=[];
+ eval "no warnings; lock";
+ like($@, qr/^Not enough arguments for lock/,
+ "Can't trip up general keyword overloading");
+
+ $CORE::GLOBAL::{"readline"}=[];
+ eval "<STDOUT> if 0";
+ is($@, '', "Can't trip up readline overloading");
+
+ $CORE::GLOBAL::{"readpipe"}=[];
+ eval "`` if 0";
+ is($@, '', "Can't trip up readpipe overloading");
+}
+
+{
+ die if exists $::{BONK};
+ $::{BONK} = \"powie";
+ *{"BONK"} = \&{"BONK"};
+ eval 'is(BONK(), "powie",
+ "Assignment works when glob created midway (bug 45607)"); 1'
+ or die $@;
+}
+
+# For now these tests are here, but they would probably be better in a file for
+# tests for croaks. (And in turn, that probably deserves to be in a different
+# directory. Gerard Goossen has a point about the layout being unclear
+
+sub coerce_integer {
+ no warnings 'numeric';
+ $_[0] |= 0;
+}
+sub coerce_number {
+ no warnings 'numeric';
+ $_[0] += 0;
+}
+sub coerce_string {
+ $_[0] .= '';
+}
+
+foreach my $type (qw(integer number string)) {
+ my $prog = "coerce_$type(*STDERR)";
+ is (scalar eval "$prog; 1", undef, "$prog failed...");
+ like ($@, qr/Can't coerce GLOB to $type in/,
+ "with the correct error message");
+}
+
+# RT #60954 anonymous glob should be defined, and not coredump when
+# stringified. The behaviours are:
+#
+# defined($glob) "$glob"
+# 5.8.8 false "" with uninit warning
+# 5.10.0 true (coredump)
+# 5.12.0 true ""
+
+{
+ my $io_ref = *STDOUT{IO};
+ my $glob = *$io_ref;
+ ok(defined $glob, "RT #60954 anon glob should be defined");
+
+ my $warn = '';
+ local $SIG{__WARN__} = sub { $warn = $_[0] };
+ use warnings;
+ my $str = "$glob";
+ is($warn, '', "RT #60954 anon glob stringification shouldn't warn");
+ is($str, '', "RT #60954 anon glob stringification should be empty");
+}
+
+# [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.)
+{
+ $m = 2; $m=~s/./0/gems; $m= *STDERR;
+ is(
+ "$m", "*main::STDERR",
+ '[perl #71254] assignment of globs to vars with pos'
+ );
+}
+
+# [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 RT72740a;
+ my $f = bless({}, RT72740b);
+ sub s1 { s2 $f; }
+ our $s4;
+ sub s3 { s4 $f; }
+}
+{
+ package RT72740b;
+ sub s2 { "RT72740b::s2" }
+ sub s4 { "RT72740b::s4" }
+}
+ok(exists($RT72740a::{s1}), "RT72740a::s1 exists");
+ok(!exists($RT72740a::{s2}), "RT72740a::s2 does not exist");
+ok(exists($RT72740a::{s3}), "RT72740a::s3 exists");
+ok(exists($RT72740a::{s4}), "RT72740a::s4 exists");
+is(RT72740a::s1(), "RT72740b::s2", "RT72740::s1 parsed correctly");
+is(RT72740a::s3(), "RT72740b::s4", "RT72740::s3 parsed correctly");
+
+# [perl #71686] Globs that are in symbol table can be un-globbed
+$sym = undef;
+$::{fake} = *sym;
+is (eval 'local *::fake = \"chuck"; $fake', 'chuck',
+ "Localized glob didn't coerce into a RV");
+is ($@, '', "Can localize FAKE glob that's present in stash");
+is (scalar $::{fake}, "*main::sym",
+ "Localized FAKE glob's value was correctly restored");
+
+# [perl #1804] *$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 = sub{};
+ is(
+ "$x", '*_random::glob_that_is_not_used_elsewhere',
+ '[perl #1804] *$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 $@;
+
+ # 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{} };
+ eval { $a = undef }; # workaround for untie($handle) bug
+ 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 warks";
+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 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';
+ $var = *galobbe;
+ {
+ local *$alias = [];
+ $var = 3;
+ is $alias, 3, "[perl #77926] Glob reification during localisation";
+ }
+}
+
__END__
Perl
Rules
https://perl5.git.perl.org / perl5.git / blobdiff