[p5sagit/p5-mst-13.2.git] / t / op / magic.t

#!./perl

BEGIN {
    $| = 1;
    chdir 't' if -d 't';
    @INC = '../lib';
    $SIG{__WARN__} = sub { die "Dying on warning: ", @_ };
    require './test.pl';
}

use warnings;
use Config;

plan (tests => 79);

$Is_MSWin32  = $^O eq 'MSWin32';
$Is_NetWare  = $^O eq 'NetWare';
$Is_VMS      = $^O eq 'VMS';
$Is_Dos      = $^O eq 'dos';
$Is_os2      = $^O eq 'os2';
$Is_Cygwin   = $^O eq 'cygwin';
$Is_MacOS    = $^O eq 'MacOS';
$Is_MPE      = $^O eq 'mpeix';		
$Is_miniperl = $ENV{PERL_CORE_MINITEST};
$Is_BeOS     = $^O eq 'beos';

$PERL = $ENV{PERL}
    || ($Is_NetWare           ? 'perl'   :
       ($Is_MacOS || $Is_VMS) ? $^X      :
       $Is_MSWin32            ? '.\perl' :
       './perl');

END {
    # On VMS, environment variable changes are peristent after perl exits
    delete $ENV{'FOO'} if $Is_VMS;
}

eval '$ENV{"FOO"} = "hi there";';	# check that ENV is inited inside eval
# cmd.exe will echo 'variable=value' but 4nt will echo just the value
# -- Nikola Knezevic
if ($Is_MSWin32)  { like `set FOO`, qr/^(?:FOO=)?hi there$/; }
elsif ($Is_MacOS) { ok "1 # skipped", 1; }
elsif ($Is_VMS)   { is `write sys\$output f\$trnlnm("FOO")`, "hi there\n"; }
else              { is `echo \$FOO`, "hi there\n"; }

unlink 'ajslkdfpqjsjfk';
$! = 0;
open(FOO,'ajslkdfpqjsjfk');
isnt($!, 0);
close FOO; # just mention it, squelch used-only-once

SKIP: {
    skip('SIGINT not safe on this platform', 5)
	if $Is_MSWin32 || $Is_NetWare || $Is_Dos || $Is_MPE || $Is_MacOS;
  # the next tests are done in a subprocess because sh spits out a
  # newline onto stderr when a child process kills itself with SIGINT.
  # We use a pipe rather than system() because the VMS command buffer
  # would overflow with a command that long.

    open( CMDPIPE, "| $PERL");

    print CMDPIPE <<'END';

    $| = 1;		# command buffering

    $SIG{"INT"} = "ok3";     kill "INT",$$; sleep 1;
    $SIG{"INT"} = "IGNORE";  kill "INT",$$; sleep 1; print "ok 4\n";
    $SIG{"INT"} = "DEFAULT"; kill "INT",$$; sleep 1; print "not ok 4\n";

    sub ok3 {
	if (($x = pop(@_)) eq "INT") {
	    print "ok 3\n";
	}
	else {
	    print "not ok 3 ($x @_)\n";
	}
    }

END

    close CMDPIPE;

    open( CMDPIPE, "| $PERL");
    print CMDPIPE <<'END';

    { package X;
	sub DESTROY {
	    kill "INT",$$;
	}
    }
    sub x {
	my $x=bless [], 'X';
	return sub { $x };
    }
    $| = 1;		# command buffering
    $SIG{"INT"} = "ok5";
    {
	local $SIG{"INT"}=x();
	print ""; # Needed to expose failure in 5.8.0 (why?)
    }
    sleep 1;
    delete $SIG{"INT"};
    kill "INT",$$; sleep 1;
    sub ok5 {
	print "ok 5\n";
    }
END
    close CMDPIPE;
    $? >>= 8 if $^O eq 'VMS'; # POSIX status hiding in 2nd byte
    my $todo = ($^O eq 'os2' ? ' # TODO: EMX v0.9d_fix4 bug: wrong nibble? ' : '');
    print $? & 0xFF ? "ok 6$todo\n" : "not ok 6$todo\n";

    open(CMDPIPE, "| $PERL");
    print CMDPIPE <<'END';

    sub PVBM () { 'foo' }
    index 'foo', PVBM;
    my $pvbm = PVBM;

    sub foo { exit 0 }

    $SIG{"INT"} = $pvbm;
    kill "INT", $$; sleep 1;
END
    close CMDPIPE;
    $? >>= 8 if $^O eq 'VMS';
    print $? ? "not ok 7\n" : "ok 7\n";

    curr_test(curr_test() + 5);
}

# can we slice ENV?
@val1 = @ENV{keys(%ENV)};
@val2 = values(%ENV);
is join(':',@val1), join(':',@val2);
cmp_ok @val1, '>', 1;

# regex vars
'foobarbaz' =~ /b(a)r/;
is $`, 'foo';
is $&, 'bar';
is $', 'baz';
is $+, 'a';

# $"
@a = qw(foo bar baz);
is "@a", "foo bar baz";
{
    local $" = ',';
    is "@a", "foo,bar,baz";
}

# $;
%h = ();
$h{'foo', 'bar'} = 1;
is((keys %h)[0], "foo\034bar");
{
    local $; = 'x';
    %h = ();
    $h{'foo', 'bar'} = 1;
    is((keys %h)[0], 'fooxbar');
}

# $?, $@, $$
SKIP:  {
    skip('$? + system are broken on MacPerl', 2) if $Is_MacOS;
    system qq[$PERL "-I../lib" -e "use vmsish qw(hushed); exit(0)"];
    is $?, 0;
    system qq[$PERL "-I../lib" -e "use vmsish qw(hushed); exit(1)"];
    isnt $?, 0;
}

eval { die "foo\n" };
is $@, "foo\n";

cmp_ok($$, '>', 0);
eval { $$++ };
like ($@, qr/^Modification of a read-only value attempted/);

# $^X and $0
{
    if ($^O eq 'qnx') {
	chomp($wd = `/usr/bin/fullpath -t`);
    }
    elsif($Is_Cygwin || $Config{'d_procselfexe'}) {
       # Cygwin turns the symlink into the real file
       chomp($wd = `pwd`);
       $wd =~ s#/t$##;
       if ($Is_Cygwin) {
	   $wd = Cygwin::win_to_posix_path(Cygwin::posix_to_win_path($wd, 1));
       }
    }
    elsif($Is_os2) {
       $wd = Cwd::sys_cwd();
    }
    elsif($Is_MacOS) {
       $wd = ':';
    }
    else {
	$wd = '.';
    }
    my $perl = ($Is_MacOS || $Is_VMS) ? $^X : "$wd/perl";
    my $headmaybe = '';
    my $middlemaybe = '';
    my $tailmaybe = '';
    $script = "$wd/show-shebang";
    if ($Is_MSWin32) {
	chomp($wd = `cd`);
	$wd =~ s|\\|/|g;
	$perl = "$wd/perl.exe";
	$script = "$wd/show-shebang.bat";
	$headmaybe = <<EOH ;
\@rem ='
\@echo off
$perl -x \%0
goto endofperl
\@rem ';
EOH
	$tailmaybe = <<EOT ;

__END__
:endofperl
EOT
    }
    elsif ($Is_os2) {
      $script = "./show-shebang";
    }
    elsif ($Is_MacOS) {
      $script = ":show-shebang";
    }
    elsif ($Is_VMS) {
      $script = "[]show-shebang";
    }
    elsif ($Is_Cygwin) {
      $middlemaybe = <<'EOX'
$^X = Cygwin::win_to_posix_path(Cygwin::posix_to_win_path($^X, 1));
$0 = Cygwin::win_to_posix_path(Cygwin::posix_to_win_path($0, 1));
EOX
    }
    if ($^O eq 'os390' or $^O eq 'posix-bc' or $^O eq 'vmesa') {  # no shebang
	$headmaybe = <<EOH ;
    eval 'exec ./perl -S \$0 \${1+"\$\@"}'
        if 0;
EOH
    }
    $s1 = "\$^X is $perl, \$0 is $script\n";
    ok open(SCRIPT, ">$script") or diag $!;
    ok print(SCRIPT $headmaybe . <<EOB . $middlemaybe . <<'EOF' . $tailmaybe) or diag $!;
#!$wd/perl
EOB
print "\$^X is $^X, \$0 is $0\n";
EOF
    ok close(SCRIPT) or diag $!;
    ok chmod(0755, $script) or diag $!;
    $_ = ($Is_MacOS || $Is_VMS) ? `$perl $script` : `$script`;
    s/\.exe//i if $Is_Dos or $Is_Cygwin or $Is_os2;
    s{./$script}{$script} if $Is_BeOS; # revert BeOS execvp() side-effect
    s{\bminiperl\b}{perl}; # so that test doesn't fail with miniperl
    s{is perl}{is $perl}; # for systems where $^X is only a basename
    s{\\}{/}g;
    if ($Is_MSWin32 || $Is_os2) {
	is uc $_, uc $s1;
    } else {
	is $_, $s1;
    }
    $_ = `$perl $script`;
    s/\.exe//i if $Is_Dos or $Is_os2 or $Is_Cygwin;
    s{./$perl}{$perl} if $Is_BeOS; # revert BeOS execvp() side-effect
    s{\\}{/}g;
    if ($Is_MSWin32 || $Is_os2) {
	is uc $_, uc $s1;
    } else {
	is $_, $s1;
    }
    ok unlink($script) or diag $!;
}

# $], $^O, $^T
cmp_ok $], '>=', 5.00319;
ok $^O;
cmp_ok $^T, '>', 850000000;

# Test change 25062 is working
my $orig_osname = $^O;
{
local $^I = '.bak';
is $^O, $orig_osname, 'Assigning $^I does not clobber $^O';
}
$^O = $orig_osname;

SKIP: {
    skip("%ENV manipulations fail or aren't safe on $^O", 4)
	if $Is_VMS || $Is_Dos || $Is_MacOS;

 SKIP: {
	skip("clearing \%ENV is not safe when running under valgrind")
	    if $ENV{PERL_VALGRIND};

	    $PATH = $ENV{PATH};
	    $PDL = $ENV{PERL_DESTRUCT_LEVEL} || 0;
	    $ENV{foo} = "bar";
	    %ENV = ();
	    $ENV{PATH} = $PATH;
	    $ENV{PERL_DESTRUCT_LEVEL} = $PDL || 0;
	    if ($Is_MSWin32) {
		is `set foo 2>NUL`, "";
	    } else {
		is `echo \$foo`, "\n";
	    }
	}

	$ENV{__NoNeSuCh} = "foo";
	$0 = "bar";
# cmd.exe will echo 'variable=value' but 4nt will echo just the value
# -- Nikola Knezevic
    	if ($Is_MSWin32) {
	    like `set __NoNeSuCh`, qr/^(?:__NoNeSuCh=)?foo$/;
	} else {
	    is `echo \$__NoNeSuCh`, "foo\n";
	}
    SKIP: {
	    skip("\$0 check only on Linux and FreeBSD", 2)
		unless $^O =~ /^(linux|freebsd)$/
		    && open CMDLINE, "/proc/$$/cmdline";

	    chomp(my $line = scalar <CMDLINE>);
	    my $me = (split /\0/, $line)[0];
	    is $me, $0, 'altering $0 is effective (testing with /proc/)';
	    close CMDLINE;
            # perlbug #22811
            my $mydollarzero = sub {
              my($arg) = shift;
              $0 = $arg if defined $arg;
	      # In FreeBSD the ps -o command= will cause
	      # an empty header line, grab only the last line.
              my $ps = (`ps -o command= -p $$`)[-1];
              return if $?;
              chomp $ps;
              printf "# 0[%s]ps[%s]\n", $0, $ps;
              $ps;
            };
            my $ps = $mydollarzero->("x");
            ok(!$ps  # we allow that something goes wrong with the ps command
	       # In Linux 2.4 we would get an exact match ($ps eq 'x') but
	       # in Linux 2.2 there seems to be something funny going on:
	       # it seems as if the original length of the argv[] would
	       # be stored in the proc struct and then used by ps(1),
	       # no matter what characters we use to pad the argv[].
	       # (And if we use \0:s, they are shown as spaces.)  Sigh.
               || $ps =~ /^x\s*$/
	       # FreeBSD cannot get rid of both the leading "perl :"
	       # and the trailing " (perl)": some FreeBSD versions
	       # can get rid of the first one.
	       || ($^O eq 'freebsd' && $ps =~ m/^(?:perl: )?x(?: \(perl\))?$/),
		       'altering $0 is effective (testing with `ps`)');
	}
}

{
    my $ok = 1;
    my $warn = '';
    local $SIG{'__WARN__'} = sub { $ok = 0; $warn = join '', @_; $warn =~ s/\n$//; };
    $! = undef;
    local $TODO = $Is_VMS ? "'\$!=undef' does throw a warning" : '';
    ok($ok, $warn);
}

# test case-insignificance of %ENV (these tests must be enabled only
# when perl is compiled with -DENV_IS_CASELESS)
SKIP: {
    skip('no caseless %ENV support', 4) unless $Is_MSWin32 || $Is_NetWare;

    %ENV = ();
    $ENV{'Foo'} = 'bar';
    $ENV{'fOo'} = 'baz';
    is scalar(keys(%ENV)), 1;
    ok exists $ENV{'FOo'};
    is delete $ENV{'foO'}, 'baz';
    is scalar(keys(%ENV)), 0;
}

SKIP: {
    skip ("miniperl can't rely on loading %Errno", 2) if $Is_miniperl;
   no warnings 'void';

# Make sure Errno hasn't been prematurely autoloaded

   ok !keys %Errno::;

# Test auto-loading of Errno when %! is used

   ok scalar eval q{
      %!;
      defined %Errno::;
   }, $@;
}

SKIP:  {
    skip ("miniperl can't rely on loading %Errno") if $Is_miniperl;
    # Make sure that Errno loading doesn't clobber $!

    undef %Errno::;
    delete $INC{"Errno.pm"};

    open(FOO, "nonesuch"); # Generate ENOENT
    my %errs = %{"!"}; # Cause Errno.pm to be loaded at run-time
    ok ${"!"}{ENOENT};
}

is $^S, 0;
eval { is $^S,1 };
eval " BEGIN { ok ! defined \$^S } ";
is $^S, 0;

is ${^TAINT}, 0;
eval { ${^TAINT} = 1 };
is ${^TAINT}, 0;

# 5.6.1 had a bug: @+ and @- were not properly interpolated
# into double-quoted strings
# 20020414 mjd-perl-patch+@plover.com
"I like pie" =~ /(I) (like) (pie)/;
is "@-",  "0 0 2 7";
is "@+", "10 1 6 10";

# Tests for the magic get of $\
{
    my $ok = 0;
    # [perl #19330]
    {
	local $\ = undef;
	$\++; $\++;
	$ok = $\ eq 2;
    }
    ok $ok;
    $ok = 0;
    {
	local $\ = "a\0b";
	$ok = "a$\b" eq "aa\0bb";
    }
    ok $ok;
}

# Test for bug [perl #27839]
{
    my $x;
    sub f {
	"abc" =~ /(.)./;
	$x = "@+";
	return @+;
    };
    my @y = f();
    is $x, "@y", "return a magic array ($x) vs (@y)";
}

# Test for bug [perl #36434]
# Can not do this test on VMS, EPOC, and SYMBIAN according to comments
# in mg.c/Perl_magic_clear_all_env()
SKIP: {
    skip('Can\'t make assignment to \%ENV on this system', 3) if $Is_VMS;

    local @ISA;
    local %ENV;
    # This used to be __PACKAGE__, but that causes recursive
    #  inheritance, which is detected earlier now and broke
    #  this test
    eval { push @ISA, __FILE__ };
    is $@, '', 'Push a constant on a magic array';
    $@ and print "# $@";
    eval { %ENV = (PATH => __PACKAGE__) };
    is $@, '', 'Assign a constant to a magic hash';
    $@ and print "# $@";
    eval { my %h = qw(A B); %ENV = (PATH => (keys %h)[0]) };
    is $@, '', 'Assign a shared key to a magic hash';
    $@ and print "# $@";
}

# Tests for Perl_magic_clearsig
foreach my $sig (qw(__WARN__ INT)) {
    $SIG{$sig} = lc $sig;
    is $SIG{$sig}, 'main::' . lc $sig, "Can assign to $sig";
    is delete $SIG{$sig}, 'main::' . lc $sig, "Can delete from $sig";
    is $SIG{$sig}, undef, "$sig is now gone";
    is delete $SIG{$sig}, undef, "$sig remains gone";
}

# And now one which doesn't exist;
{
    no warnings 'signal';
    $SIG{HUNGRY} = 'mmm, pie';
}
is $SIG{HUNGRY}, 'mmm, pie', 'Can assign to HUNGRY';
is delete $SIG{HUNGRY}, 'mmm, pie', 'Can delete from HUNGRY';
is $SIG{HUNGRY}, undef, "HUNGRY is now gone";
is delete $SIG{HUNGRY}, undef, "HUNGRY remains gone";

# Test deleting signals that we never set
foreach my $sig (qw(__DIE__ _BOGUS_HOOK KILL THIRSTY)) {
    is $SIG{$sig}, undef, "$sig is not present";
    is delete $SIG{$sig}, undef, "delete of $sig returns undef";
}
Commit	Line	Data
8d063cd8	1	#!./perl
8d063cd8	2
90ce63d5	3	BEGIN {
90ce63d5	4	$\| = 1;
90ce63d5	5	chdir 't' if -d 't';
20822f61	6	@INC = '../lib';
774d564b	7	$SIG{__WARN__} = sub { die "Dying on warning: ", @_ };
b2978f4e	8	require './test.pl';
90ce63d5	9	}
8d063cd8	10
9f1b1f2d	11	use warnings;
04fee9b5	12	use Config;
9f1b1f2d	13
179c85a2	14	plan (tests => 79);
0bee926d	15
43651d81	16	$Is_MSWin32 = $^O eq 'MSWin32';
	17	$Is_NetWare = $^O eq 'NetWare';
	18	$Is_VMS = $^O eq 'VMS';
	19	$Is_Dos = $^O eq 'dos';
	20	$Is_os2 = $^O eq 'os2';
	21	$Is_Cygwin = $^O eq 'cygwin';
	22	$Is_MacOS = $^O eq 'MacOS';
	23	$Is_MPE = $^O eq 'mpeix';
	24	$Is_miniperl = $ENV{PERL_CORE_MINITEST};
dbc1d986	25	$Is_BeOS = $^O eq 'beos';
be708cc0	26
c8d62b71	27	$PERL = $ENV{PERL}
	28	\|\| ($Is_NetWare ? 'perl' :
	29	($Is_MacOS \|\| $Is_VMS) ? $^X :
	30	$Is_MSWin32 ? '.\perl' :
	31	'./perl');
68dc0745	32
8df0e0ed	33	END {
	34	# On VMS, environment variable changes are peristent after perl exits
	35	delete $ENV{'FOO'} if $Is_VMS;
	36	}
	37
39e571d4	38	eval '$ENV{"FOO"} = "hi there";'; # check that ENV is inited inside eval
26f6e342	39	# cmd.exe will echo 'variable=value' but 4nt will echo just the value
26f6e342	40	# -- Nikola Knezevic
b2978f4e	41	if ($Is_MSWin32) { like `set FOO`, qr/^(?:FOO=)?hi there$/; }
be708cc0	42	elsif ($Is_MacOS) { ok "1 # skipped", 1; }
b2978f4e	43	elsif ($Is_VMS) { is `write sys\$output f\$trnlnm("FOO")`, "hi there\n"; }
b2978f4e	44	else { is `echo \$FOO`, "hi there\n"; }
8d063cd8	45
bf38876a	46	unlink 'ajslkdfpqjsjfk';
8d063cd8	47	$! = 0;
90ce63d5	48	open(FOO,'ajslkdfpqjsjfk');
b2978f4e	49	isnt($!, 0);
90ce63d5	50	close FOO; # just mention it, squelch used-only-once
8d063cd8	51
b2978f4e	52	SKIP: {
	53	skip('SIGINT not safe on this platform', 5)
	54	if $Is_MSWin32 \|\| $Is_NetWare \|\| $Is_Dos \|\| $Is_MPE \|\| $Is_MacOS;
c363d00c	55	# the next tests are done in a subprocess because sh spits out a
c363d00c	56	# newline onto stderr when a child process kills itself with SIGINT.
04fee9b5	57	# We use a pipe rather than system() because the VMS command buffer
c363d00c	58	# would overflow with a command that long.
	59
	60	open( CMDPIPE, "\| $PERL");
	61
	62	print CMDPIPE <<'END';
378cc40b	63
79072805	64	$\| = 1; # command buffering
378cc40b	65
b715f106	66	$SIG{"INT"} = "ok3"; kill "INT",$$; sleep 1;
b715f106	67	$SIG{"INT"} = "IGNORE"; kill "INT",$$; sleep 1; print "ok 4\n";
0bee926d	68	$SIG{"INT"} = "DEFAULT"; kill "INT",$$; sleep 1; print "not ok 4\n";
79072805	69
	70	sub ok3 {
	71	if (($x = pop(@_)) eq "INT") {
	72	print "ok 3\n";
	73	}
	74	else {
652ed9f8	75	print "not ok 3 ($x @_)\n";
79072805	76	}
	77	}
	78
	79	END
c363d00c	80
	81	close CMDPIPE;
	82
2d4fcd5e	83	open( CMDPIPE, "\| $PERL");
	84	print CMDPIPE <<'END';
	85
	86	{ package X;
	87	sub DESTROY {
	88	kill "INT",$$;
	89	}
	90	}
	91	sub x {
	92	my $x=bless [], 'X';
	93	return sub { $x };
	94	}
	95	$\| = 1; # command buffering
	96	$SIG{"INT"} = "ok5";
	97	{
	98	local $SIG{"INT"}=x();
	99	print ""; # Needed to expose failure in 5.8.0 (why?)
	100	}
	101	sleep 1;
	102	delete $SIG{"INT"};
	103	kill "INT",$$; sleep 1;
	104	sub ok5 {
	105	print "ok 5\n";
	106	}
	107	END
	108	close CMDPIPE;
bb4e15c8	109	$? >>= 8 if $^O eq 'VMS'; # POSIX status hiding in 2nd byte
639cf43b	110	my $todo = ($^O eq 'os2' ? ' # TODO: EMX v0.9d_fix4 bug: wrong nibble? ' : '');
639cf43b	111	print $? & 0xFF ? "ok 6$todo\n" : "not ok 6$todo\n";
2d4fcd5e	112
6e592b3a	113	open(CMDPIPE, "\| $PERL");
	114	print CMDPIPE <<'END';
	115
	116	sub PVBM () { 'foo' }
	117	index 'foo', PVBM;
	118	my $pvbm = PVBM;
	119
	120	sub foo { exit 0 }
	121
	122	$SIG{"INT"} = $pvbm;
	123	kill "INT", $$; sleep 1;
	124	END
	125	close CMDPIPE;
	126	$? >>= 8 if $^O eq 'VMS';
	127	print $? ? "not ok 7\n" : "ok 7\n";
	128
b2978f4e	129	curr_test(curr_test() + 5);
68dc0745	130	}
a687059c	131
68dc0745	132	# can we slice ENV?
68dc0745	133	@val1 = @ENV{keys(%ENV)};
a687059c	134	@val2 = values(%ENV);
b2978f4e	135	is join(':',@val1), join(':',@val2);
b2978f4e	136	cmp_ok @val1, '>', 1;
90ce63d5	137
	138	# regex vars
	139	'foobarbaz' =~ /b(a)r/;
b2978f4e	140	is $`, 'foo';
	141	is $&, 'bar';
	142	is $', 'baz';
	143	is $+, 'a';
90ce63d5	144
	145	# $"
	146	@a = qw(foo bar baz);
b2978f4e	147	is "@a", "foo bar baz";
90ce63d5	148	{
90ce63d5	149	local $" = ',';
b2978f4e	150	is "@a", "foo,bar,baz";
90ce63d5	151	}
a687059c	152
90ce63d5	153	# $;
	154	%h = ();
	155	$h{'foo', 'bar'} = 1;
b2978f4e	156	is((keys %h)[0], "foo\034bar");
90ce63d5	157	{
	158	local $; = 'x';
	159	%h = ();
	160	$h{'foo', 'bar'} = 1;
b2978f4e	161	is((keys %h)[0], 'fooxbar');
90ce63d5	162	}
ed6116ce	163
90ce63d5	164	# $?, $@, $$
b2978f4e	165	SKIP: {
b2978f4e	166	skip('$? + system are broken on MacPerl', 2) if $Is_MacOS;
dc459aad	167	system qq[$PERL "-I../lib" -e "use vmsish qw(hushed); exit(0)"];
b2978f4e	168	is $?, 0;
dc459aad	169	system qq[$PERL "-I../lib" -e "use vmsish qw(hushed); exit(1)"];
b2978f4e	170	isnt $?, 0;
dc459aad	171	}
90ce63d5	172
90ce63d5	173	eval { die "foo\n" };
b2978f4e	174	is $@, "foo\n";
90ce63d5	175
b2978f4e	176	cmp_ok($$, '>', 0);
306196c3	177	eval { $$++ };
b2978f4e	178	like ($@, qr/^Modification of a read-only value attempted/);
90ce63d5	179
90ce63d5	180	# $^X and $0
ed37317b	181	{
3e3baf6d	182	if ($^O eq 'qnx') {
7fbf1995	183	chomp($wd = `/usr/bin/fullpath -t`);
68dc0745	184	}
04fee9b5	185	elsif($Is_Cygwin \|\| $Config{'d_procselfexe'}) {
1cab015a	186	# Cygwin turns the symlink into the real file
	187	chomp($wd = `pwd`);
	188	$wd =~ s#/t$##;
6178c52a	189	if ($Is_Cygwin) {
	190	$wd = Cygwin::win_to_posix_path(Cygwin::posix_to_win_path($wd, 1));
	191	}
1cab015a	192	}
ed344e4f	193	elsif($Is_os2) {
	194	$wd = Cwd::sys_cwd();
	195	}
be708cc0	196	elsif($Is_MacOS) {
	197	$wd = ':';
	198	}
68dc0745	199	else {
	200	$wd = '.';
	201	}
c363d00c	202	my $perl = ($Is_MacOS \|\| $Is_VMS) ? $^X : "$wd/perl";
ed37317b	203	my $headmaybe = '';
6178c52a	204	my $middlemaybe = '';
ed37317b	205	my $tailmaybe = '';
68dc0745	206	$script = "$wd/show-shebang";
ed37317b	207	if ($Is_MSWin32) {
ed37317b	208	chomp($wd = `cd`);
8ac9c18d	209	$wd =~ s\|\\\|/\|g;
	210	$perl = "$wd/perl.exe";
	211	$script = "$wd/show-shebang.bat";
ed37317b	212	$headmaybe = <<EOH ;
	213	\@rem ='
	214	\@echo off
	215	$perl -x \%0
	216	goto endofperl
	217	\@rem ';
	218	EOH
	219	$tailmaybe = <<EOT ;
	220
	221	__END__
	222	:endofperl
	223	EOT
	224	}
ed344e4f	225	elsif ($Is_os2) {
	226	$script = "./show-shebang";
	227	}
be708cc0	228	elsif ($Is_MacOS) {
	229	$script = ":show-shebang";
	230	}
c363d00c	231	elsif ($Is_VMS) {
c363d00c	232	$script = "[]show-shebang";
be708cc0	233	}
6178c52a	234	elsif ($Is_Cygwin) {
	235	$middlemaybe = <<'EOX'
	236	$^X = Cygwin::win_to_posix_path(Cygwin::posix_to_win_path($^X, 1));
	237	$0 = Cygwin::win_to_posix_path(Cygwin::posix_to_win_path($0, 1));
	238	EOX
	239	}
a1a0e61e	240	if ($^O eq 'os390' or $^O eq 'posix-bc' or $^O eq 'vmesa') { # no shebang
9d116dd7	241	$headmaybe = <<EOH ;
	242	eval 'exec ./perl -S \$0 \${1+"\$\@"}'
	243	if 0;
	244	EOH
	245	}
2eecd615	246	$s1 = "\$^X is $perl, \$0 is $script\n";
b2978f4e	247	ok open(SCRIPT, ">$script") or diag $!;
b2978f4e	248	ok print(SCRIPT $headmaybe . <<EOB . $middlemaybe . <<'EOF' . $tailmaybe) or diag $!;
774d564b	249	#!$wd/perl
774d564b	250	EOB
90ce63d5	251	print "\$^X is $^X, \$0 is $0\n";
90ce63d5	252	EOF
b2978f4e	253	ok close(SCRIPT) or diag $!;
b2978f4e	254	ok chmod(0755, $script) or diag $!;
c363d00c	255	$_ = ($Is_MacOS \|\| $Is_VMS) ? `$perl $script` : `$script`;
ed344e4f	256	s/\.exe//i if $Is_Dos or $Is_Cygwin or $Is_os2;
dbc1d986	257	s{./$script}{$script} if $Is_BeOS; # revert BeOS execvp() side-effect
68dc0745	258	s{\bminiperl\b}{perl}; # so that test doesn't fail with miniperl
ed37317b	259	s{is perl}{is $perl}; # for systems where $^X is only a basename
a6c40364	260	s{\\}{/}g;
b2978f4e	261	if ($Is_MSWin32 \|\| $Is_os2) {
	262	is uc $_, uc $s1;
	263	} else {
	264	is $_, $s1;
	265	}
ed37317b	266	$_ = `$perl $script`;
4bbb7126	267	s/\.exe//i if $Is_Dos or $Is_os2 or $Is_Cygwin;
dbc1d986	268	s{./$perl}{$perl} if $Is_BeOS; # revert BeOS execvp() side-effect
a6c40364	269	s{\\}{/}g;
b2978f4e	270	if ($Is_MSWin32 \|\| $Is_os2) {
	271	is uc $_, uc $s1;
	272	} else {
	273	is $_, $s1;
	274	}
	275	ok unlink($script) or diag $!;
68dc0745	276	}
ed6116ce	277
90ce63d5	278	# $], $^O, $^T
b2978f4e	279	cmp_ok $], '>=', 5.00319;
0bee926d	280	ok $^O;
b2978f4e	281	cmp_ok $^T, '>', 850000000;
66b1d557	282
881ddac4	283	# Test change 25062 is working
	284	my $orig_osname = $^O;
	285	{
	286	local $^I = '.bak';
b2978f4e	287	is $^O, $orig_osname, 'Assigning $^I does not clobber $^O';
881ddac4	288	}
	289	$^O = $orig_osname;
	290
b2978f4e	291	SKIP: {
	292	skip("%ENV manipulations fail or aren't safe on $^O", 4)
	293	if $Is_VMS \|\| $Is_Dos \|\| $Is_MacOS;
	294
	295	SKIP: {
	296	skip("clearing \%ENV is not safe when running under valgrind")
	297	if $ENV{PERL_VALGRIND};
	298
da51b73c	299	$PATH = $ENV{PATH};
	300	$PDL = $ENV{PERL_DESTRUCT_LEVEL} \|\| 0;
	301	$ENV{foo} = "bar";
	302	%ENV = ();
	303	$ENV{PATH} = $PATH;
	304	$ENV{PERL_DESTRUCT_LEVEL} = $PDL \|\| 0;
b2978f4e	305	if ($Is_MSWin32) {
	306	is `set foo 2>NUL`, "";
	307	} else {
	308	is `echo \$foo`, "\n";
	309	}
da51b73c	310	}
3e3baf6d	311
ec00bdd8	312	$ENV{__NoNeSuCh} = "foo";
3e3baf6d	313	$0 = "bar";
26f6e342	314	# cmd.exe will echo 'variable=value' but 4nt will echo just the value
26f6e342	315	# -- Nikola Knezevic
b2978f4e	316	if ($Is_MSWin32) {
	317	like `set __NoNeSuCh`, qr/^(?:__NoNeSuCh=)?foo$/;
	318	} else {
	319	is `echo \$__NoNeSuCh`, "foo\n";
	320	}
	321	SKIP: {
	322	skip("\$0 check only on Linux and FreeBSD", 2)
	323	unless $^O =~ /^(linux\|freebsd)$/
	324	&& open CMDLINE, "/proc/$$/cmdline";
	325
09fdc078	326	chomp(my $line = scalar <CMDLINE>);
09fdc078	327	my $me = (split /\0/, $line)[0];
b2978f4e	328	is $me, $0, 'altering $0 is effective (testing with /proc/)';
09fdc078	329	close CMDLINE;
ecce83c2	330	# perlbug #22811
	331	my $mydollarzero = sub {
	332	my($arg) = shift;
	333	$0 = $arg if defined $arg;
fbd3c14b	334	# In FreeBSD the ps -o command= will cause
	335	# an empty header line, grab only the last line.
	336	my $ps = (`ps -o command= -p $$`)[-1];
ecce83c2	337	return if $?;
	338	chomp $ps;
	339	printf "# 0[%s]ps[%s]\n", $0, $ps;
	340	$ps;
	341	};
	342	my $ps = $mydollarzero->("x");
e26ae24d	343	ok(!$ps # we allow that something goes wrong with the ps command
80bca1b4	344	# In Linux 2.4 we would get an exact match ($ps eq 'x') but
	345	# in Linux 2.2 there seems to be something funny going on:
	346	# it seems as if the original length of the argv[] would
	347	# be stored in the proc struct and then used by ps(1),
	348	# no matter what characters we use to pad the argv[].
	349	# (And if we use \0:s, they are shown as spaces.) Sigh.
	350	\|\| $ps =~ /^x\s*$/
6a4647a3	351	# FreeBSD cannot get rid of both the leading "perl :"
	352	# and the trailing " (perl)": some FreeBSD versions
	353	# can get rid of the first one.
d2e0b13f	354	\|\| ($^O eq 'freebsd' && $ps =~ m/^(?:perl: )?x(?: \(perl\))?$/),
e26ae24d	355	'altering $0 is effective (testing with `ps`)');
09fdc078	356	}
66b1d557	357	}
3e3baf6d	358
c7213721	359	{
a45269de	360	my $ok = 1;
a45269de	361	my $warn = '';
ae8ade65	362	local $SIG{'__WARN__'} = sub { $ok = 0; $warn = join '', @_; $warn =~ s/\n$//; };
78987ded	363	$! = undef;
b2978f4e	364	local $TODO = $Is_VMS ? "'\$!=undef' does throw a warning" : '';
b2978f4e	365	ok($ok, $warn);
78987ded	366	}
78987ded	367
902173a3	368	# test case-insignificance of %ENV (these tests must be enabled only
902173a3	369	# when perl is compiled with -DENV_IS_CASELESS)
b2978f4e	370	SKIP: {
	371	skip('no caseless %ENV support', 4) unless $Is_MSWin32 \|\| $Is_NetWare;
	372
902173a3	373	%ENV = ();
	374	$ENV{'Foo'} = 'bar';
	375	$ENV{'fOo'} = 'baz';
b2978f4e	376	is scalar(keys(%ENV)), 1;
	377	ok exists $ENV{'FOo'};
	378	is delete $ENV{'foO'}, 'baz';
	379	is scalar(keys(%ENV)), 0;
902173a3	380	}
d2c93421	381
b2978f4e	382	SKIP: {
b2978f4e	383	skip ("miniperl can't rely on loading %Errno", 2) if $Is_miniperl;
126c71c8	384	no warnings 'void';
126c71c8	385
d2c93421	386	# Make sure Errno hasn't been prematurely autoloaded
d2c93421	387
b79f7545	388	ok !keys %Errno::;
d2c93421	389
	390	# Test auto-loading of Errno when %! is used
	391
126c71c8	392	ok scalar eval q{
	393	%!;
	394	defined %Errno::;
	395	}, $@;
	396	}
d2c93421	397
b2978f4e	398	SKIP: {
b2978f4e	399	skip ("miniperl can't rely on loading %Errno") if $Is_miniperl;
43651d81	400	# Make sure that Errno loading doesn't clobber $!
d2c93421	401
43651d81	402	undef %Errno::;
43651d81	403	delete $INC{"Errno.pm"};
d2c93421	404
43651d81	405	open(FOO, "nonesuch"); # Generate ENOENT
	406	my %errs = %{"!"}; # Cause Errno.pm to be loaded at run-time
	407	ok ${"!"}{ENOENT};
	408	}
a4268c0a	409
b2978f4e	410	is $^S, 0;
b2978f4e	411	eval { is $^S,1 };
b0e6f864	412	eval " BEGIN { ok ! defined \$^S } ";
b2978f4e	413	is $^S, 0;
7c36658b	414
b2978f4e	415	is ${^TAINT}, 0;
7c36658b	416	eval { ${^TAINT} = 1 };
b2978f4e	417	is ${^TAINT}, 0;
9aa702ec	418
	419	# 5.6.1 had a bug: @+ and @- were not properly interpolated
	420	# into double-quoted strings
	421	# 20020414 mjd-perl-patch+@plover.com
b64ebf53	422	"I like pie" =~ /(I) (like) (pie)/;
b2978f4e	423	is "@-", "0 0 2 7";
b2978f4e	424	is "@+", "10 1 6 10";
9aa702ec	425
f28098ff	426	# Tests for the magic get of $\
	427	{
	428	my $ok = 0;
	429	# [perl #19330]
	430	{
	431	local $\ = undef;
	432	$\++; $\++;
	433	$ok = $\ eq 2;
	434	}
	435	ok $ok;
	436	$ok = 0;
	437	{
	438	local $\ = "a\0b";
	439	$ok = "a$\b" eq "aa\0bb";
	440	}
	441	ok $ok;
	442	}
547d1dd8	443
	444	# Test for bug [perl #27839]
	445	{
	446	my $x;
	447	sub f {
	448	"abc" =~ /(.)./;
	449	$x = "@+";
	450	return @+;
	451	};
	452	my @y = f();
b2978f4e	453	is $x, "@y", "return a magic array ($x) vs (@y)";
547d1dd8	454	}
4c9140ed	455
4c9140ed	456	# Test for bug [perl #36434]
b2978f4e	457	# Can not do this test on VMS, EPOC, and SYMBIAN according to comments
	458	# in mg.c/Perl_magic_clear_all_env()
	459	SKIP: {
	460	skip('Can\'t make assignment to \%ENV on this system', 3) if $Is_VMS;
	461
4c9140ed	462	local @ISA;
4c9140ed	463	local %ENV;
e1a479c5	464	# This used to be __PACKAGE__, but that causes recursive
	465	# inheritance, which is detected earlier now and broke
	466	# this test
	467	eval { push @ISA, __FILE__ };
b2978f4e	468	is $@, '', 'Push a constant on a magic array';
4c9140ed	469	$@ and print "# $@";
4c9140ed	470	eval { %ENV = (PATH => __PACKAGE__) };
b2978f4e	471	is $@, '', 'Assign a constant to a magic hash';
d8084ca5	472	$@ and print "# $@";
d8084ca5	473	eval { my %h = qw(A B); %ENV = (PATH => (keys %h)[0]) };
b2978f4e	474	is $@, '', 'Assign a shared key to a magic hash';
4c9140ed	475	$@ and print "# $@";
4c9140ed	476	}
179c85a2	477
	478	# Tests for Perl_magic_clearsig
	479	foreach my $sig (qw(__WARN__ INT)) {
	480	$SIG{$sig} = lc $sig;
	481	is $SIG{$sig}, 'main::' . lc $sig, "Can assign to $sig";
	482	is delete $SIG{$sig}, 'main::' . lc $sig, "Can delete from $sig";
	483	is $SIG{$sig}, undef, "$sig is now gone";
	484	is delete $SIG{$sig}, undef, "$sig remains gone";
	485	}
	486
	487	# And now one which doesn't exist;
	488	{
	489	no warnings 'signal';
	490	$SIG{HUNGRY} = 'mmm, pie';
	491	}
	492	is $SIG{HUNGRY}, 'mmm, pie', 'Can assign to HUNGRY';
	493	is delete $SIG{HUNGRY}, 'mmm, pie', 'Can delete from HUNGRY';
	494	is $SIG{HUNGRY}, undef, "HUNGRY is now gone";
	495	is delete $SIG{HUNGRY}, undef, "HUNGRY remains gone";
	496
	497	# Test deleting signals that we never set
c8be058c	498	foreach my $sig (qw(__DIE__ _BOGUS_HOOK KILL THIRSTY)) {
179c85a2	499	is $SIG{$sig}, undef, "$sig is not present";
	500	is delete $SIG{$sig}, undef, "delete of $sig returns undef";
	501	}