[perl5.git] / t / op / bop.t

#!./perl

#
# test the bit operators '&', '|', '^', '~', '<<', and '>>'
#

BEGIN {
    chdir 't' if -d 't';
    @INC = '../lib';
    require "./test.pl";
    require Config;
}

# Tests don't have names yet.
# If you find tests are failing, please try adding names to tests to track
# down where the failure is, and supply your new names as a patch.
# (Just-in-time test naming)
plan tests => 161 + (10*13*2) + 4;

# numerics
ok ((0xdead & 0xbeef) == 0x9ead);
ok ((0xdead | 0xbeef) == 0xfeef);
ok ((0xdead ^ 0xbeef) == 0x6042);
ok ((~0xdead & 0xbeef) == 0x2042);

# shifts
ok ((257 << 7) == 32896);
ok ((33023 >> 7) == 257);

# signed vs. unsigned
ok ((~0 > 0 && do { use integer; ~0 } == -1));

my $bits = 0;
for (my $i = ~0; $i; $i >>= 1) { ++$bits; }
my $cusp = 1 << ($bits - 1);


ok (($cusp & -1) > 0 && do { use integer; $cusp & -1 } < 0);
ok (($cusp | 1) > 0 && do { use integer; $cusp | 1 } < 0);
ok (($cusp ^ 1) > 0 && do { use integer; $cusp ^ 1 } < 0);
ok ((1 << ($bits - 1)) == $cusp &&
    do { use integer; 1 << ($bits - 1) } == -$cusp);
ok (($cusp >> 1) == ($cusp / 2) &&
    do { use integer; abs($cusp >> 1) } == ($cusp / 2));

$Aaz = chr(ord("A") & ord("z"));
$Aoz = chr(ord("A") | ord("z"));
$Axz = chr(ord("A") ^ ord("z"));

# short strings
is (("AAAAA" & "zzzzz"), ($Aaz x 5));
is (("AAAAA" | "zzzzz"), ($Aoz x 5));
is (("AAAAA" ^ "zzzzz"), ($Axz x 5));

# long strings
$foo = "A" x 150;
$bar = "z" x 75;
$zap = "A" x 75;
# & truncates
is (($foo & $bar), ($Aaz x 75 ));
# | does not truncate
is (($foo | $bar), ($Aoz x 75 . $zap));
# ^ does not truncate
is (($foo ^ $bar), ($Axz x 75 . $zap));

#
is ("ok \xFF\xFF\n" & "ok 19\n", "ok 19\n");
is ("ok 20\n" | "ok \0\0\n", "ok 20\n");
is ("o\000 \0001\000" ^ "\000k\0002\000\n", "ok 21\n");

#
is ("ok \x{FF}\x{FF}\n" & "ok 22\n", "ok 22\n");
is ("ok 23\n" | "ok \x{0}\x{0}\n", "ok 23\n");
is ("o\x{0} \x{0}4\x{0}" ^ "\x{0}k\x{0}2\x{0}\n", "ok 24\n");

#
is (sprintf("%vd", v4095 & v801), 801);
is (sprintf("%vd", v4095 | v801), 4095);
is (sprintf("%vd", v4095 ^ v801), 3294);

#
is (sprintf("%vd", v4095.801.4095 & v801.4095), '801.801');
is (sprintf("%vd", v4095.801.4095 | v801.4095), '4095.4095.4095');
is (sprintf("%vd", v801.4095 ^ v4095.801.4095), '3294.3294.4095');
#
is (sprintf("%vd", v120.300 & v200.400), '72.256');
is (sprintf("%vd", v120.300 | v200.400), '248.444');
is (sprintf("%vd", v120.300 ^ v200.400), '176.188');
#
my $a = v120.300;
my $b = v200.400;
$a ^= $b;
is (sprintf("%vd", $a), '176.188');
my $a = v120.300;
my $b = v200.400;
$a |= $b;
is (sprintf("%vd", $a), '248.444');

#
# UTF8 ~ behaviour
#

my $Is_EBCDIC = (ord('A') == 193) ? 1 : 0;

my @not36;

for (0x100...0xFFF) {
  $a = ~(chr $_);
  if ($Is_EBCDIC) {
      push @not36, sprintf("%#03X", $_)
          if $a ne chr(~$_) or length($a) != 1;
  }
  else {
      push @not36, sprintf("%#03X", $_)
          if $a ne chr(~$_) or length($a) != 1 or ~$a ne chr($_);
  }
}
is (join (', ', @not36), '');

my @not37;

for my $i (0xEEE...0xF00) {
  for my $j (0x0..0x120) {
    $a = ~(chr ($i) . chr $j);
    if ($Is_EBCDIC) {
        push @not37, sprintf("%#03X %#03X", $i, $j)
	    if $a ne chr(~$i).chr(~$j) or
	       length($a) != 2;
    }
    else {
        push @not37, sprintf("%#03X %#03X", $i, $j)
	    if $a ne chr(~$i).chr(~$j) or
	       length($a) != 2 or 
               ~$a ne chr($i).chr($j);
    }
  }
}
is (join (', ', @not37), '');

SKIP: {
  skip "EBCDIC" if $Is_EBCDIC;
  is (~chr(~0), "\0");
}


my @not39;

for my $i (0x100..0x120) {
    for my $j (0x100...0x120) {
	push @not39, sprintf("%#03X %#03X", $i, $j)
	    if ~(chr($i)|chr($j)) ne (~chr($i)&~chr($j));
    }
}
is (join (', ', @not39), '');

my @not40;

for my $i (0x100..0x120) {
    for my $j (0x100...0x120) {
	push @not40, sprintf("%#03X %#03X", $i, $j)
	    if ~(chr($i)&chr($j)) ne (~chr($i)|~chr($j));
    }
}
is (join (', ', @not40), '');


# More variations on 19 and 22.
is ("ok \xFF\x{FF}\n" & "ok 41\n", "ok 41\n");
is ("ok \x{FF}\xFF\n" & "ok 42\n", "ok 42\n");

# Tests to see if you really can do casts negative floats to unsigned properly
$neg1 = -1.0;
ok (~ $neg1 == 0);
$neg7 = -7.0;
ok (~ $neg7 == 6);


# double magic tests

sub TIESCALAR { bless { value => $_[1], orig => $_[1] } }
sub STORE { $_[0]{store}++; $_[0]{value} = $_[1] }
sub FETCH { $_[0]{fetch}++; $_[0]{value} }
sub stores { tied($_[0])->{value} = tied($_[0])->{orig};
             delete(tied($_[0])->{store}) || 0 }
sub fetches { delete(tied($_[0])->{fetch}) || 0 }

# numeric double magic tests

tie $x, "main", 1;
tie $y, "main", 3;

is(($x | $y), 3);
is(fetches($x), 1);
is(fetches($y), 1);
is(stores($x), 0);
is(stores($y), 0);

is(($x & $y), 1);
is(fetches($x), 1);
is(fetches($y), 1);
is(stores($x), 0);
is(stores($y), 0);

is(($x ^ $y), 2);
is(fetches($x), 1);
is(fetches($y), 1);
is(stores($x), 0);
is(stores($y), 0);

is(($x |= $y), 3);
is(fetches($x), 2);
is(fetches($y), 1);
is(stores($x), 1);
is(stores($y), 0);

is(($x &= $y), 1);
is(fetches($x), 2);
is(fetches($y), 1);
is(stores($x), 1);
is(stores($y), 0);

is(($x ^= $y), 2);
is(fetches($x), 2);
is(fetches($y), 1);
is(stores($x), 1);
is(stores($y), 0);

is(~~$y, 3);
is(fetches($y), 1);
is(stores($y), 0);

{ use integer;

is(($x | $y), 3);
is(fetches($x), 1);
is(fetches($y), 1);
is(stores($x), 0);
is(stores($y), 0);

is(($x & $y), 1);
is(fetches($x), 1);
is(fetches($y), 1);
is(stores($x), 0);
is(stores($y), 0);

is(($x ^ $y), 2);
is(fetches($x), 1);
is(fetches($y), 1);
is(stores($x), 0);
is(stores($y), 0);

is(($x |= $y), 3);
is(fetches($x), 2);
is(fetches($y), 1);
is(stores($x), 1);
is(stores($y), 0);

is(($x &= $y), 1);
is(fetches($x), 2);
is(fetches($y), 1);
is(stores($x), 1);
is(stores($y), 0);

is(($x ^= $y), 2);
is(fetches($x), 2);
is(fetches($y), 1);
is(stores($x), 1);
is(stores($y), 0);

is(~$y, -4);
is(fetches($y), 1);
is(stores($y), 0);

} # end of use integer;

# stringwise double magic tests

tie $x, "main", "a";
tie $y, "main", "c";

is(($x | $y), ("a" | "c"));
is(fetches($x), 1);
is(fetches($y), 1);
is(stores($x), 0);
is(stores($y), 0);

is(($x & $y), ("a" & "c"));
is(fetches($x), 1);
is(fetches($y), 1);
is(stores($x), 0);
is(stores($y), 0);

is(($x ^ $y), ("a" ^ "c"));
is(fetches($x), 1);
is(fetches($y), 1);
is(stores($x), 0);
is(stores($y), 0);

is(($x |= $y), ("a" | "c"));
is(fetches($x), 2);
is(fetches($y), 1);
is(stores($x), 1);
is(stores($y), 0);

is(($x &= $y), ("a" & "c"));
is(fetches($x), 2);
is(fetches($y), 1);
is(stores($x), 1);
is(stores($y), 0);

is(($x ^= $y), ("a" ^ "c"));
is(fetches($x), 2);
is(fetches($y), 1);
is(stores($x), 1);
is(stores($y), 0);

is(~~$y, "c");
is(fetches($y), 1);
is(stores($y), 0);

$a = "\0\x{100}"; chop($a);
ok(utf8::is_utf8($a)); # make sure UTF8 flag is still there
$a = ~$a;
is($a, "\xFF", "~ works with utf-8");

# [rt.perl.org 33003]
# This would cause a segfault without malloc wrap
SKIP: {
  skip "No malloc wrap checks" unless $Config::Config{usemallocwrap};
  like( runperl(prog => 'eval q($#a>>=1); print 1'), "^1\n?" );
}

# [perl #37616] Bug in &= (string) and/or m//
{
    $a = "aa";
    $a &= "a";
    ok($a =~ /a+$/, 'ASCII "a" is NUL-terminated');

    $b = "bb\x{100}";
    $b &= "b";
    ok($b =~ /b+$/, 'Unicode "b" is NUL-terminated');
}

{
    $a = chr(0x101) x 0x101;
    $b = chr(0x0FF) x 0x0FF;

    $c = $a | $b;
    is($c, chr(0x1FF) x 0xFF . chr(0x101) x 2);

    $c = $b | $a;
    is($c, chr(0x1FF) x 0xFF . chr(0x101) x 2);

    $c = $a & $b;
    is($c, chr(0x001) x 0x0FF);

    $c = $b & $a;
    is($c, chr(0x001) x 0x0FF);

    $c = $a ^ $b;
    is($c, chr(0x1FE) x 0x0FF . chr(0x101) x 2);

    $c = $b ^ $a;
    is($c, chr(0x1FE) x 0x0FF . chr(0x101) x 2);
}

{
    $a = chr(0x101) x 0x101;
    $b = chr(0x0FF) x 0x0FF;

    $a |= $b;
    is($a, chr(0x1FF) x 0xFF . chr(0x101) x 2);
}

{
    $a = chr(0x101) x 0x101;
    $b = chr(0x0FF) x 0x0FF;

    $b |= $a;
    is($b, chr(0x1FF) x 0xFF . chr(0x101) x 2);
}

{
    $a = chr(0x101) x 0x101;
    $b = chr(0x0FF) x 0x0FF;

    $a &= $b;
    is($a, chr(0x001) x 0x0FF);
}

{
    $a = chr(0x101) x 0x101;
    $b = chr(0x0FF) x 0x0FF;

    $b &= $a;
    is($b, chr(0x001) x 0x0FF);
}

{
    $a = chr(0x101) x 0x101;
    $b = chr(0x0FF) x 0x0FF;

    $a ^= $b;
    is($a, chr(0x1FE) x 0x0FF . chr(0x101) x 2);
}

{
    $a = chr(0x101) x 0x101;
    $b = chr(0x0FF) x 0x0FF;

    $b ^= $a;
    is($b, chr(0x1FE) x 0x0FF . chr(0x101) x 2);
}

# update to pp_complement() via Coverity
SKIP: {
  # UTF-EBCDIC is limited to 0x7fffffff and can't encode ~0.
  skip "EBCDIC" if $Is_EBCDIC;

  my $str = "\x{10000}\x{800}";
  # U+10000 is four bytes in UTF-8/UTF-EBCDIC.
  # U+0800 is three bytes in UTF-8/UTF-EBCDIC.

  no warnings "utf8";
  { use bytes; $str =~ s/\C\C\z//; }

  # it's really bogus that (~~malformed) is \0.
  my $ref = "\x{10000}\0";
  is(~~$str, $ref);
}

# ref tests

my %res;

for my $str ("x", "\x{100}") {
    for my $chr (qw/S A H G X ( * F/) {
        for my $op (qw/| & ^/) {
            my $co = ord $chr;
            my $so = ord $str;
            $res{"$chr$op$str"} = eval qq/chr($co $op $so)/;
        }
    }
    $res{"undef|$str"} = $str;
    $res{"undef&$str"} = "";
    $res{"undef^$str"} = $str;
}

sub PVBM () { "X" }
index PVBM, "foo";

my $warn = 0;
local $^W = 1;
local $SIG{__WARN__} = sub { $warn++ };

sub is_first {
    my ($got, $orig, $op, $str, $name) = @_;
    is(substr($got, 0, 1), $res{"$orig$op$str"}, $name);
}

for (
    # [object to test, first char of stringification, name]
    [undef,             "undef",    "undef"         ],
    [\1,                "S",        "scalar ref"    ],
    [[],                "A",        "array ref"     ],
    [{},                "H",        "hash ref"      ],
    [qr/x/,             "(",        "qr//"          ],
    [*foo,              "*",        "glob"          ],
    [\*foo,             "G",        "glob ref"      ],
    [PVBM,              "X",        "PVBM"          ],
    [\PVBM,             "S",        "PVBM ref"      ],
    [bless([], "Foo"),  "F",        "object"        ],
) {
    my ($val, $orig, $type) = @$_;

    for (["x", "string"], ["\x{100}", "utf8"]) {
        my ($str, $desc) = @$_;

        $warn = 0;

        is_first($val | $str, $orig, "|", $str, "$type | $desc");
        is_first($val & $str, $orig, "&", $str, "$type & $desc");
        is_first($val ^ $str, $orig, "^", $str, "$type ^ $desc");

        is_first($str | $val, $orig, "|", $str, "$desc | $type");
        is_first($str & $val, $orig, "&", $str, "$desc & $type");
        is_first($str ^ $val, $orig, "^", $str, "$desc ^ $type");

        my $new;
        ($new = $val) |= $str;
        is_first($new, $orig, "|", $str, "$type |= $desc");
        ($new = $val) &= $str;
        is_first($new, $orig, "&", $str, "$type &= $desc");
        ($new = $val) ^= $str;
        is_first($new, $orig, "^", $str, "$type ^= $desc");

        ($new = $str) |= $val;
        is_first($new, $orig, "|", $str, "$desc |= $type");
        ($new = $str) &= $val;
        is_first($new, $orig, "&", $str, "$desc &= $type");
        ($new = $str) ^= $val;
        is_first($new, $orig, "^", $str, "$desc ^= $type");

        if ($orig eq "undef") {
            # undef |= and undef ^= don't warn
            is($warn, 10, "no duplicate warnings");
        }
        else {
            is($warn, 0, "no warnings");
        }
    }
}

my $strval;

{
    package Bar;
    use overload q/""/ => sub { $strval };

    package Baz;
    use overload q/|/ => sub { "y" };
}

ok(!eval { bless([], "Bar") | "x"; 1 },     "string overload can't use |");
like($@, qr/no method found/,               "correct error");
is(eval { bless([], "Baz") | "x" }, "y",    "| overload works");

my $obj = bless [], "Bar";
$strval = "x";
eval { $obj |= "Q" };
$strval = "z";
is("$obj", "z", "|= doesn't break string overload");
Commit	Line	Data
ddb9d9dc	1	#!./perl
	2
	3	#
55497cff	4	# test the bit operators '&', '\|', '^', '~', '<<', and '>>'
ddb9d9dc	5	#
ddb9d9dc	6
d1f8c7a4 CS	7	BEGIN {
d1f8c7a4 CS	8	chdir 't' if -d 't';
20822f61	9	@INC = '../lib';
add36b05	10	require "./test.pl";
784fea9c	11	require Config;
d1f8c7a4 CS	12	}
d1f8c7a4 CS	13
add36b05 NC	14	# Tests don't have names yet.
	15	# If you find tests are failing, please try adding names to tests to track
	16	# down where the failure is, and supply your new names as a patch.
	17	# (Just-in-time test naming)
8c8eee82	18	plan tests => 161 + (10132) + 4;
ddb9d9dc	19
ddb9d9dc	20	# numerics
add36b05 NC	21	ok ((0xdead & 0xbeef) == 0x9ead);
	22	ok ((0xdead \| 0xbeef) == 0xfeef);
	23	ok ((0xdead ^ 0xbeef) == 0x6042);
	24	ok ((~0xdead & 0xbeef) == 0x2042);
55497cff	25
55497cff	26	# shifts
add36b05 NC	27	ok ((257 << 7) == 32896);
add36b05 NC	28	ok ((33023 >> 7) == 257);
55497cff	29
55497cff	30	# signed vs. unsigned
add36b05	31	ok ((~0 > 0 && do { use integer; ~0 } == -1));
d1f8c7a4 CS	32
	33	my $bits = 0;
	34	for (my $i = ~0; $i; $i >>= 1) { ++$bits; }
	35	my $cusp = 1 << ($bits - 1);
	36
add36b05 NC	37
	38	ok (($cusp & -1) > 0 && do { use integer; $cusp & -1 } < 0);
	39	ok (($cusp \| 1) > 0 && do { use integer; $cusp \| 1 } < 0);
	40	ok (($cusp ^ 1) > 0 && do { use integer; $cusp ^ 1 } < 0);
	41	ok ((1 << ($bits - 1)) == $cusp &&
	42	do { use integer; 1 << ($bits - 1) } == -$cusp);
	43	ok (($cusp >> 1) == ($cusp / 2) &&
	44	do { use integer; abs($cusp >> 1) } == ($cusp / 2));
ddb9d9dc	45
9d116dd7 JH	46	$Aaz = chr(ord("A") & ord("z"));
	47	$Aoz = chr(ord("A") \| ord("z"));
	48	$Axz = chr(ord("A") ^ ord("z"));
	49
ddb9d9dc	50	# short strings
add36b05 NC	51	is (("AAAAA" & "zzzzz"), ($Aaz x 5));
	52	is (("AAAAA" \| "zzzzz"), ($Aoz x 5));
	53	is (("AAAAA" ^ "zzzzz"), ($Axz x 5));
ddb9d9dc	54
	55	# long strings
	56	$foo = "A" x 150;
	57	$bar = "z" x 75;
9d116dd7 JH	58	$zap = "A" x 75;
9d116dd7 JH	59	# & truncates
add36b05	60	is (($foo & $bar), ($Aaz x 75 ));
9d116dd7	61	# \| does not truncate
add36b05	62	is (($foo \| $bar), ($Aoz x 75 . $zap));
9d116dd7	63	# ^ does not truncate
add36b05	64	is (($foo ^ $bar), ($Axz x 75 . $zap));
9d116dd7	65
0c57e439	66	#
add36b05 NC	67	is ("ok \xFF\xFF\n" & "ok 19\n", "ok 19\n");
	68	is ("ok 20\n" \| "ok \0\0\n", "ok 20\n");
	69	is ("o\000 \0001\000" ^ "\000k\0002\000\n", "ok 21\n");
0c57e439 GS	70
0c57e439 GS	71	#
add36b05 NC	72	is ("ok \x{FF}\x{FF}\n" & "ok 22\n", "ok 22\n");
	73	is ("ok 23\n" \| "ok \x{0}\x{0}\n", "ok 23\n");
	74	is ("o\x{0} \x{0}4\x{0}" ^ "\x{0}k\x{0}2\x{0}\n", "ok 24\n");
0c57e439 GS	75
0c57e439 GS	76	#
add36b05 NC	77	is (sprintf("%vd", v4095 & v801), 801);
	78	is (sprintf("%vd", v4095 \| v801), 4095);
	79	is (sprintf("%vd", v4095 ^ v801), 3294);
0c57e439 GS	80
0c57e439 GS	81	#
add36b05 NC	82	is (sprintf("%vd", v4095.801.4095 & v801.4095), '801.801');
	83	is (sprintf("%vd", v4095.801.4095 \| v801.4095), '4095.4095.4095');
	84	is (sprintf("%vd", v801.4095 ^ v4095.801.4095), '3294.3294.4095');
2a4ebaa6	85	#
add36b05 NC	86	is (sprintf("%vd", v120.300 & v200.400), '72.256');
	87	is (sprintf("%vd", v120.300 \| v200.400), '248.444');
	88	is (sprintf("%vd", v120.300 ^ v200.400), '176.188');
2a4ebaa6 JH	89	#
	90	my $a = v120.300;
	91	my $b = v200.400;
	92	$a ^= $b;
add36b05	93	is (sprintf("%vd", $a), '176.188');
2a4ebaa6 JH	94	my $a = v120.300;
	95	my $b = v200.400;
	96	$a \|= $b;
add36b05	97	is (sprintf("%vd", $a), '248.444');
3da1940a	98
1d68d6cd SC	99	#
1d68d6cd SC	100	# UTF8 ~ behaviour
3da1940a JH	101	#
3da1940a JH	102
210db7fc PP	103	my $Is_EBCDIC = (ord('A') == 193) ? 1 : 0;
210db7fc PP	104
3da1940a JH	105	my @not36;
3da1940a JH	106
f0da931d	107	for (0x100...0xFFF) {
1d68d6cd	108	$a = ~(chr $_);
210db7fc PP	109	if ($Is_EBCDIC) {
	110	push @not36, sprintf("%#03X", $_)
	111	if $a ne chr(~$_) or length($a) != 1;
	112	}
	113	else {
	114	push @not36, sprintf("%#03X", $_)
	115	if $a ne chr(~$_) or length($a) != 1 or ~$a ne chr($_);
	116	}
3da1940a	117	}
add36b05	118	is (join (', ', @not36), '');
1d68d6cd	119
3da1940a JH	120	my @not37;
3da1940a JH	121
1d68d6cd SC	122	for my $i (0xEEE...0xF00) {
	123	for my $j (0x0..0x120) {
	124	$a = ~(chr ($i) . chr $j);
210db7fc PP	125	if ($Is_EBCDIC) {
	126	push @not37, sprintf("%#03X %#03X", $i, $j)
	127	if $a ne chr(~$i).chr(~$j) or
	128	length($a) != 2;
	129	}
	130	else {
	131	push @not37, sprintf("%#03X %#03X", $i, $j)
	132	if $a ne chr(~$i).chr(~$j) or
	133	length($a) != 2 or
	134	~$a ne chr($i).chr($j);
	135	}
1d68d6cd SC	136	}
1d68d6cd SC	137	}
add36b05 NC	138	is (join (', ', @not37), '');
	139
	140	SKIP: {
	141	skip "EBCDIC" if $Is_EBCDIC;
	142	is (~chr(~0), "\0");
3da1940a	143	}
f0da931d	144
a1ca4561 YST	145
	146	my @not39;
	147
	148	for my $i (0x100..0x120) {
	149	for my $j (0x100...0x120) {
	150	push @not39, sprintf("%#03X %#03X", $i, $j)
	151	if ~(chr($i)\|chr($j)) ne (~chr($i)&~chr($j));
	152	}
	153	}
add36b05	154	is (join (', ', @not39), '');
a1ca4561 YST	155
	156	my @not40;
	157
	158	for my $i (0x100..0x120) {
	159	for my $j (0x100...0x120) {
	160	push @not40, sprintf("%#03X %#03X", $i, $j)
	161	if ~(chr($i)&chr($j)) ne (~chr($i)\|~chr($j));
	162	}
	163	}
add36b05 NC	164	is (join (', ', @not40), '');
add36b05 NC	165
299b089d JH	166
299b089d JH	167	# More variations on 19 and 22.
add36b05 NC	168	is ("ok \xFF\x{FF}\n" & "ok 41\n", "ok 41\n");
add36b05 NC	169	is ("ok \x{FF}\xFF\n" & "ok 42\n", "ok 42\n");
66a74c25 JO	170
	171	# Tests to see if you really can do casts negative floats to unsigned properly
	172	$neg1 = -1.0;
add36b05	173	ok (~ $neg1 == 0);
66a74c25	174	$neg7 = -7.0;
add36b05	175	ok (~ $neg7 == 6);
891f9566	176
891f9566 YST	177
	178	# double magic tests
	179
	180	sub TIESCALAR { bless { value => $_[1], orig => $_[1] } }
	181	sub STORE { $_[0]{store}++; $_[0]{value} = $_[1] }
	182	sub FETCH { $_[0]{fetch}++; $_[0]{value} }
	183	sub stores { tied($_[0])->{value} = tied($_[0])->{orig};
	184	delete(tied($_[0])->{store}) \|\| 0 }
	185	sub fetches { delete(tied($_[0])->{fetch}) \|\| 0 }
	186
	187	# numeric double magic tests
	188
	189	tie $x, "main", 1;
	190	tie $y, "main", 3;
	191
	192	is(($x \| $y), 3);
	193	is(fetches($x), 1);
	194	is(fetches($y), 1);
	195	is(stores($x), 0);
	196	is(stores($y), 0);
	197
	198	is(($x & $y), 1);
	199	is(fetches($x), 1);
	200	is(fetches($y), 1);
	201	is(stores($x), 0);
	202	is(stores($y), 0);
	203
	204	is(($x ^ $y), 2);
	205	is(fetches($x), 1);
	206	is(fetches($y), 1);
	207	is(stores($x), 0);
	208	is(stores($y), 0);
	209
	210	is(($x \|= $y), 3);
	211	is(fetches($x), 2);
	212	is(fetches($y), 1);
	213	is(stores($x), 1);
	214	is(stores($y), 0);
	215
	216	is(($x &= $y), 1);
	217	is(fetches($x), 2);
	218	is(fetches($y), 1);
	219	is(stores($x), 1);
	220	is(stores($y), 0);
	221
	222	is(($x ^= $y), 2);
	223	is(fetches($x), 2);
	224	is(fetches($y), 1);
	225	is(stores($x), 1);
	226	is(stores($y), 0);
	227
	228	is(~~$y, 3);
	229	is(fetches($y), 1);
	230	is(stores($y), 0);
	231
	232	{ use integer;
	233
	234	is(($x \| $y), 3);
	235	is(fetches($x), 1);
	236	is(fetches($y), 1);
	237	is(stores($x), 0);
	238	is(stores($y), 0);
	239
	240	is(($x & $y), 1);
241	is(fetches($x), 1);
242	is(fetches($y), 1);
243	is(stores($x), 0);
244	is(stores($y), 0);
245
246	is(($x ^ $y), 2);
247	is(fetches($x), 1);
248	is(fetches($y), 1);
249	is(stores($x), 0);
250	is(stores($y), 0);
251
252	is(($x \|= $y), 3);
253	is(fetches($x), 2);
254	is(fetches($y), 1);
255	is(stores($x), 1);
256	is(stores($y), 0);
257
258	is(($x &= $y), 1);
259	is(fetches($x), 2);
260	is(fetches($y), 1);
261	is(stores($x), 1);
262	is(stores($y), 0);
263
264	is(($x ^= $y), 2);
265	is(fetches($x), 2);
266	is(fetches($y), 1);
267	is(stores($x), 1);
268	is(stores($y), 0);
269
270	is(~$y, -4);
271	is(fetches($y), 1);
272	is(stores($y), 0);
273
274	} # end of use integer;
275
276	# stringwise double magic tests
277
278	tie $x, "main", "a";
279	tie $y, "main", "c";
280
281	is(($x \| $y), ("a" \| "c"));
282	is(fetches($x), 1);
283	is(fetches($y), 1);
284	is(stores($x), 0);
285	is(stores($y), 0);
286
287	is(($x & $y), ("a" & "c"));
288	is(fetches($x), 1);
289	is(fetches($y), 1);
290	is(stores($x), 0);
291	is(stores($y), 0);
292
293	is(($x ^ $y), ("a" ^ "c"));
294	is(fetches($x), 1);
295	is(fetches($y), 1);
296	is(stores($x), 0);
297	is(stores($y), 0);
298
299	is(($x \|= $y), ("a" \| "c"));
300	is(fetches($x), 2);
301	is(fetches($y), 1);
302	is(stores($x), 1);
303	is(stores($y), 0);
304
305	is(($x &= $y), ("a" & "c"));
306	is(fetches($x), 2);
307	is(fetches($y), 1);
308	is(stores($x), 1);
309	is(stores($y), 0);
310
311	is(($x ^= $y), ("a" ^ "c"));
312	is(fetches($x), 2);
313	is(fetches($y), 1);
314	is(stores($x), 1);
315	is(stores($y), 0);
316
317	is(~~$y, "c");
318	is(fetches($y), 1);
319	is(stores($y), 0);
d0a21e00 GA	320
	321	$a = "\0\x{100}"; chop($a);
	322	ok(utf8::is_utf8($a)); # make sure UTF8 flag is still there
	323	$a = ~$a;
	324	is($a, "\xFF", "~ works with utf-8");
80ff368f RGS	325
80ff368f RGS	326	# [rt.perl.org 33003]
784fea9c NC	327	# This would cause a segfault without malloc wrap
	328	SKIP: {
	329	skip "No malloc wrap checks" unless $Config::Config{usemallocwrap};
	330	like( runperl(prog => 'eval q($#a>>=1); print 1'), "^1\n?" );
	331	}
1a787b95 TS	332
	333	# [perl #37616] Bug in &= (string) and/or m//
	334	{
	335	$a = "aa";
	336	$a &= "a";
	337	ok($a =~ /a+$/, 'ASCII "a" is NUL-terminated');
	338
	339	$b = "bb\x{100}";
	340	$b &= "b";
	341	ok($b =~ /b+$/, 'Unicode "b" is NUL-terminated');
	342	}
794a0d33 JH	343
	344	{
	345	$a = chr(0x101) x 0x101;
	346	$b = chr(0x0FF) x 0x0FF;
	347
	348	$c = $a \| $b;
	349	is($c, chr(0x1FF) x 0xFF . chr(0x101) x 2);
	350
	351	$c = $b \| $a;
	352	is($c, chr(0x1FF) x 0xFF . chr(0x101) x 2);
	353
	354	$c = $a & $b;
	355	is($c, chr(0x001) x 0x0FF);
	356
	357	$c = $b & $a;
	358	is($c, chr(0x001) x 0x0FF);
	359
	360	$c = $a ^ $b;
	361	is($c, chr(0x1FE) x 0x0FF . chr(0x101) x 2);
	362
	363	$c = $b ^ $a;
	364	is($c, chr(0x1FE) x 0x0FF . chr(0x101) x 2);
	365	}
	366
	367	{
	368	$a = chr(0x101) x 0x101;
	369	$b = chr(0x0FF) x 0x0FF;
	370
	371	$a \|= $b;
	372	is($a, chr(0x1FF) x 0xFF . chr(0x101) x 2);
	373	}
	374
	375	{
	376	$a = chr(0x101) x 0x101;
	377	$b = chr(0x0FF) x 0x0FF;
	378
	379	$b \|= $a;
	380	is($b, chr(0x1FF) x 0xFF . chr(0x101) x 2);
	381	}
	382
	383	{
	384	$a = chr(0x101) x 0x101;
	385	$b = chr(0x0FF) x 0x0FF;
	386
	387	$a &= $b;
	388	is($a, chr(0x001) x 0x0FF);
	389	}
	390
	391	{
	392	$a = chr(0x101) x 0x101;
	393	$b = chr(0x0FF) x 0x0FF;
	394
	395	$b &= $a;
	396	is($b, chr(0x001) x 0x0FF);
	397	}
	398
	399	{
	400	$a = chr(0x101) x 0x101;
	401	$b = chr(0x0FF) x 0x0FF;
	402
	403	$a ^= $b;
	404	is($a, chr(0x1FE) x 0x0FF . chr(0x101) x 2);
	405	}
	406
407	{
408	$a = chr(0x101) x 0x101;
409	$b = chr(0x0FF) x 0x0FF;
410
411	$b ^= $a;
412	is($b, chr(0x1FE) x 0x0FF . chr(0x101) x 2);
413	}
414
74d49cd0 TS	415	# update to pp_complement() via Coverity
	416	SKIP: {
	417	# UTF-EBCDIC is limited to 0x7fffffff and can't encode ~0.
	418	skip "EBCDIC" if $Is_EBCDIC;
	419
	420	my $str = "\x{10000}\x{800}";
	421	# U+10000 is four bytes in UTF-8/UTF-EBCDIC.
	422	# U+0800 is three bytes in UTF-8/UTF-EBCDIC.
	423
	424	no warnings "utf8";
	425	{ use bytes; $str =~ s/\C\C\z//; }
	426
	427	# it's really bogus that (~~malformed) is \0.
	428	my $ref = "\x{10000}\0";
	429	is(~~$str, $ref);
	430	}
8c8eee82 BM	431
	432	# ref tests
	433
	434	my %res;
	435
	436	for my $str ("x", "\x{100}") {
	437	for my $chr (qw/S A H G X ( * F/) {
	438	for my $op (qw/\| & ^/) {
	439	my $co = ord $chr;
	440	my $so = ord $str;
	441	$res{"$chr$op$str"} = eval qq/chr($co $op $so)/;
	442	}
	443	}
	444	$res{"undef\|$str"} = $str;
	445	$res{"undef&$str"} = "";
	446	$res{"undef^$str"} = $str;
	447	}
	448
	449	sub PVBM () { "X" }
	450	index PVBM, "foo";
	451
	452	my $warn = 0;
	453	local $^W = 1;
	454	local $SIG{__WARN__} = sub { $warn++ };
	455
	456	sub is_first {
	457	my ($got, $orig, $op, $str, $name) = @_;
	458	is(substr($got, 0, 1), $res{"$orig$op$str"}, $name);
	459	}
	460
	461	for (
	462	# [object to test, first char of stringification, name]
	463	[undef, "undef", "undef" ],
	464	[\1, "S", "scalar ref" ],
	465	[[], "A", "array ref" ],
	466	[{}, "H", "hash ref" ],
	467	[qr/x/, "(", "qr//" ],
	468	[foo, "", "glob" ],
	469	[\*foo, "G", "glob ref" ],
	470	[PVBM, "X", "PVBM" ],
	471	[\PVBM, "S", "PVBM ref" ],
	472	[bless([], "Foo"), "F", "object" ],
	473	) {
	474	my ($val, $orig, $type) = @$_;
	475
	476	for (["x", "string"], ["\x{100}", "utf8"]) {
	477	my ($str, $desc) = @$_;
	478
	479	$warn = 0;
	480
	481	is_first($val \| $str, $orig, "\|", $str, "$type \| $desc");
	482	is_first($val & $str, $orig, "&", $str, "$type & $desc");
	483	is_first($val ^ $str, $orig, "^", $str, "$type ^ $desc");
	484
	485	is_first($str \| $val, $orig, "\|", $str, "$desc \| $type");
	486	is_first($str & $val, $orig, "&", $str, "$desc & $type");
	487	is_first($str ^ $val, $orig, "^", $str, "$desc ^ $type");
	488
	489	my $new;
	490	($new = $val) \|= $str;
	491	is_first($new, $orig, "\|", $str, "$type \|= $desc");
	492	($new = $val) &= $str;
	493	is_first($new, $orig, "&", $str, "$type &= $desc");
	494	($new = $val) ^= $str;
495	is_first($new, $orig, "^", $str, "$type ^= $desc");
496
497	($new = $str) \|= $val;
498	is_first($new, $orig, "\|", $str, "$desc \|= $type");
499	($new = $str) &= $val;
500	is_first($new, $orig, "&", $str, "$desc &= $type");
501	($new = $str) ^= $val;
502	is_first($new, $orig, "^", $str, "$desc ^= $type");
503
504	if ($orig eq "undef") {
505	# undef \|= and undef ^= don't warn
506	is($warn, 10, "no duplicate warnings");
507	}
508	else {
509	is($warn, 0, "no warnings");
510	}
511	}
512	}
513
514	my $strval;
515
516	{
517	package Bar;
518	use overload q/""/ => sub { $strval };
519
520	package Baz;
521	use overload q/\|/ => sub { "y" };
522	}
523
524	ok(!eval { bless([], "Bar") \| "x"; 1 }, "string overload can't use \|");
525	like($@, qr/no method found/, "correct error");
526	is(eval { bless([], "Baz") \| "x" }, "y", "\| overload works");
527
528	my $obj = bless [], "Bar";
529	$strval = "x";
530	eval { $obj \|= "Q" };
531	$strval = "z";
532	is("$obj", "z", "\|= doesn't break string overload");