# test the bit operators '&', '|', '^', '~', '<<', and '>>'
#
+use warnings;
+
BEGIN {
chdir 't' if -d 't';
- @INC = '../lib';
require "./test.pl";
+ set_up_inc('../lib');
+ require "./charset_tools.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 => 146;
+plan tests => 504;
# numerics
ok ((0xdead & 0xbeef) == 0x9ead);
# ^ does not truncate
is (($foo ^ $bar), ($Axz x 75 . $zap));
+# string constants. These tests expect the bit patterns of these strings in
+# ASCII, so convert to that.
+sub _and($) { $_[0] & native_to_uni("+0") }
+sub _oar($) { $_[0] | native_to_uni("+0") }
+sub _xor($) { $_[0] ^ native_to_uni("+0") }
+is _and native_to_uni("waf"), native_to_uni('# '), 'str var & const str'; # [perl #20661]
+is _and native_to_uni("waf"), native_to_uni('# '), 'str var & const str again'; # [perl #20661]
+is _oar native_to_uni("yit"), native_to_uni('{yt'), 'str var | const str';
+is _oar native_to_uni("yit"), native_to_uni('{yt'), 'str var | const str again';
+is _xor native_to_uni("yit"), native_to_uni('RYt'), 'str var ^ const str';
+is _xor native_to_uni("yit"), native_to_uni('RYt'), 'str var ^ const str again';
+
+SKIP: {
+ skip "Converting a numeric doesn't work with EBCDIC unlike the above tests",
+ 3 if $::IS_EBCDIC;
+ is _and 0, '0', 'num var & const str'; # [perl #20661]
+ is _oar 0, '0', 'num var | const str';
+ is _xor 0, '0', 'num var ^ const str';
+}
+
+# But don’t mistake a COW for a constant when assigning to it
+%h=(150=>1);
+$i=(keys %h)[0];
+$i |= 105;
+is $i, 255, '[perl #108480] $cow |= number';
+$i=(keys %h)[0];
+$i &= 105;
+is $i, 0, '[perl #108480] $cow &= number';
+$i=(keys %h)[0];
+$i ^= 105;
+is $i, 255, '[perl #108480] $cow ^= number';
+
#
is ("ok \xFF\xFF\n" & "ok 19\n", "ok 19\n");
is ("ok 20\n" | "ok \0\0\n", "ok 20\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($j));
- }
-}
-is (join (', ', @not40), '');
-
-
# More variations on 19 and 22.
is ("ok \xFF\x{FF}\n" & "ok 41\n", "ok 41\n");
is ("ok \x{FF}\xFF\n" & "ok 42\n", "ok 42\n");
ok(utf8::is_utf8($a)); # make sure UTF8 flag is still there
$a = ~$a;
is($a, "\xFF", "~ works with utf-8");
+ok(! utf8::is_utf8($a), " and turns off the UTF-8 flag");
+
+$a = "\0\x{100}"; chop($a);
+undef $b;
+$b = $a | "\xFF";
+ok(utf8::is_utf8($b), "Verify UTF-8 | non-UTF-8 retains UTF-8 flag");
+undef $b;
+$b = "\xFF" | $a;
+ok(utf8::is_utf8($b), "Verify non-UTF-8 | UTF-8 retains UTF-8 flag");
+undef $b;
+$b = $a & "\xFF";
+ok(utf8::is_utf8($b), "Verify UTF-8 & non-UTF-8 retains UTF-8 flag");
+undef $b;
+$b = "\xFF" & $a;
+ok(utf8::is_utf8($b), "Verify non-UTF-8 & UTF-8 retains UTF-8 flag");
+undef $b;
+$b = $a ^ "\xFF";
+ok(utf8::is_utf8($b), "Verify UTF-8 ^ non-UTF-8 retains UTF-8 flag");
+undef $b;
+$b = "\xFF" ^ $a;
+ok(utf8::is_utf8($b), "Verify non-UTF-8 ^ UTF-8 retains UTF-8 flag");
+
# [rt.perl.org 33003]
-# This would cause a segfault
-is( runperl(prog => 'eval q($#a>>=1); print 1'), 1 );
+# 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'), qr/^1\n?/ );
+}
+
+# [perl #37616] Bug in &= (string) and/or m//
+{
+ $a = "aa";
+ $a &= "a";
+ ok($a =~ /a+$/, 'ASCII "a" is NUL-terminated');
+
+ $b = "bb\x{FF}";
+ utf8::upgrade($b);
+ $b &= "b";
+ ok($b =~ /b+$/, 'Unicode "b" is NUL-terminated');
+}
+
+# New string- and number-specific bitwise ops
+{
+ use feature "bitwise";
+ no warnings "experimental::bitwise";
+ is "22" & "66", 2, 'numeric & with strings';
+ is "22" | "66", 86, 'numeric | with strings';
+ is "22" ^ "66", 84, 'numeric ^ with strings';
+ is ~"22" & 0xff, 233, 'numeric ~ with string';
+ is 22 &. 66, 22, '&. with numbers';
+ is 22 |. 66, 66, '|. with numbers';
+ is 22 ^. 66, "\4\4", '^. with numbers';
+ if ($::IS_EBCDIC) {
+ # ord('2') is 0xF2 on EBCDIC
+ is ~.22, "\x0d\x0d", '~. with number';
+ }
+ else {
+ # ord('2') is 0x32 on ASCII
+ is ~.22, "\xcd\xcd", '~. with number';
+ }
+ $_ = "22";
+ is $_ &= "66", 2, 'numeric &= with strings';
+ $_ = "22";
+ is $_ |= "66", 86, 'numeric |= with strings';
+ $_ = "22";
+ is $_ ^= "66", 84, 'numeric ^= with strings';
+ $_ = 22;
+ is $_ &.= 66, 22, '&.= with numbers';
+ $_ = 22;
+ is $_ |.= 66, 66, '|.= with numbers';
+ $_ = 22;
+ is $_ ^.= 66, "\4\4", '^.= with numbers';
+
+ # 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) } == ($cusp / 2));
+}
+# Repeat some of those, with 'use v5.27'
+{
+ use v5.27;
+
+ is "22" & "66", 2, 'numeric & with strings';
+ is "22" | "66", 86, 'numeric | with strings';
+ is "22" ^ "66", 84, 'numeric ^ with strings';
+ is ~"22" & 0xff, 233, 'numeric ~ with string';
+ is 22 &. 66, 22, '&. with numbers';
+ is 22 |. 66, 66, '|. with numbers';
+ is 22 ^. 66, "\4\4", '^. with numbers';
+ if ($::IS_EBCDIC) {
+ # ord('2') is 0xF2 on EBCDIC
+ is ~.22, "\x0d\x0d", '~. with number';
+ }
+ else {
+ # ord('2') is 0x32 on ASCII
+ is ~.22, "\xcd\xcd", '~. with number';
+ }
+ $_ = "22";
+ is $_ &= "66", 2, 'numeric &= with strings';
+ $_ = "22";
+ is $_ |= "66", 86, 'numeric |= with strings';
+ $_ = "22";
+ is $_ ^= "66", 84, 'numeric ^= with strings';
+ $_ = 22;
+ is $_ &.= 66, 22, '&.= with numbers';
+ $_ = 22;
+ is $_ |.= 66, 66, '|.= with numbers';
+ $_ = 22;
+ is $_ ^.= 66, "\4\4", '^.= with numbers';
+}
+
+# ref tests
+
+my %res;
+
+for my $str ("x", "\x{B6}") {
+ utf8::upgrade($str) if $str !~ /x/;
+ 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" }
+1 if index "foo", PVBM;
+
+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{B6}", "utf8"]) {
+ my ($str, $desc) = @$_;
+ utf8::upgrade($str) if $desc =~ /utf8/;
+
+ $warn = 0;
+
+ is_first($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");
+ }
+ }
+}
+
+delete $SIG{__WARN__};
+
+my $strval;
+
+{
+ package Bar;
+ use overload q/""/ => sub { $strval };
+
+ package Baz;
+ use overload q/|/ => sub { "y" };
+}
+
+ok(!eval { 1 if bless([], "Bar") | "x"; 1 },"string overload can't use |");
+like($@, 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("$obj", "z", "|= doesn't break string overload");
+
+# [perl #29070]
+$^A .= new version ~$_ for eval sprintf('"\\x%02x"', 0xff - ord("1")),
+ $::IS_EBCDIC ? v13 : v205, # 255 - ord('2')
+ eval sprintf('"\\x%02x"', 0xff - ord("3"));
+is $^A, "123", '~v0 clears vstring magic on retval';
+
+{
+ my $w = $Config::Config{ivsize} * 8;
+
+ fail("unexpected w $w") unless $w == 32 || $w == 64;
+
+ is(1 << 1, 2, "UV 1 left shift 1");
+ is(1 >> 1, 0, "UV 1 right shift 1");
+
+ is(0x7b << -4, 0x007, "UV left negative shift == right shift");
+ is(0x7b >> -4, 0x7b0, "UV right negative shift == left shift");
+
+ is(0x7b << 0, 0x07b, "UV left zero shift == identity");
+ is(0x7b >> 0, 0x07b, "UV right zero shift == identity");
+
+ is(0x0 << -1, 0x0, "zero left negative shift == zero");
+ is(0x0 >> -1, 0x0, "zero right negative shift == zero");
+
+ cmp_ok(1 << $w - 1, '==', 2 ** ($w - 1), # not is() because NV stringify.
+ "UV left $w - 1 shift == 2 ** ($w - 1)");
+ is(1 << $w, 0, "UV left shift $w == zero");
+ is(1 << $w + 1, 0, "UV left shift $w + 1 == zero");
+
+ is(1 >> $w - 1, 0, "UV right shift $w - 1 == zero");
+ is(1 >> $w, 0, "UV right shift $w == zero");
+ is(1 >> $w + 1, 0, "UV right shift $w + 1 == zero");
+
+ # Negative shiftees get promoted to UVs before shifting. This is
+ # not necessarily the ideal behavior, but that is what is happening.
+ if ($w == 64) {
+ no warnings "portable";
+ no warnings "overflow"; # prevent compile-time warning for ivsize=4
+ is(-1 << 1, 0xFFFF_FFFF_FFFF_FFFE,
+ "neg UV (sic) left shift = 0xFF..E");
+ is(-1 >> 1, 0x7FFF_FFFF_FFFF_FFFF,
+ "neg UV (sic) right right = 0x7F..F");
+ } elsif ($w == 32) {
+ no warnings "portable";
+ is(-1 << 1, 0xFFFF_FFFE, "neg left shift == 0xFF..E");
+ is(-1 >> 1, 0x7FFF_FFFF, "neg right right == 0x7F..F");
+ }
+
+ {
+ # 'use integer' means use IVs instead of UVs.
+ use integer;
+
+ # No surprises here.
+ is(1 << 1, 2, "IV 1 left shift 1 == 2");
+ is(1 >> 1, 0, "IV 1 right shift 1 == 0");
+
+ # The left overshift should behave like without 'use integer',
+ # that is, return zero.
+ is(1 << $w, 0, "IV 1 left shift $w == 0");
+ is(1 << $w + 1, 0, "IV 1 left shift $w + 1 == 0");
+ is(-1 << $w, 0, "IV -1 left shift $w == 0");
+ is(-1 << $w + 1, 0, "IV -1 left shift $w + 1 == 0");
+
+ # Even for negative IVs, left shift is multiplication.
+ # But right shift should display the stuckiness to -1.
+ is(-1 << 1, -2, "IV -1 left shift 1 == -2");
+ is(-1 >> 1, -1, "IV -1 right shift 1 == -1");
+
+ # As for UVs, negative shifting means the reverse shift.
+ is(-1 << -1, -1, "IV -1 left shift -1 == -1");
+ is(-1 >> -1, -2, "IV -1 right shift -1 == -2");
+
+ # Test also at and around wordsize, expect stuckiness to -1.
+ is(-1 >> $w - 1, -1, "IV -1 right shift $w - 1 == -1");
+ is(-1 >> $w, -1, "IV -1 right shift $w == -1");
+ is(-1 >> $w + 1, -1, "IV -1 right shift $w + 1 == -1");
+ }
+}
+
+# [perl #129287] UTF8 & was not providing a trailing null byte.
+# This test is a bit convoluted, as we want to make sure that the string
+# allocated for &’s target contains memory initialised to something other
+# than a null byte. Uninitialised memory does not make for a reliable
+# test. So we do &. on a longer non-utf8 string first.
+for (["aaa","aaa"],[substr ("a\x{100}",0,1), "a"]) {
+ use feature "bitwise";
+ no warnings "experimental::bitwise", "pack";
+ $byte = substr unpack("P2", pack "P", $$_[0] &. $$_[1]), -1;
+}
+is $byte, "\0", "utf8 &. appends null byte";
+
+# only visible under sanitize
+fresh_perl_is('$x = "UUUUUUUV"; $y = "xxxxxxx"; $x |= $y; print $x',
+ ( $::IS_EBCDIC) ? 'XXXXXXXV' : '}}}}}}}V',
+ {}, "[perl #129995] access to freed memory");
+
+
+#
+# Using code points above 0xFF is fatal
+#
+foreach my $op_info ([and => "&"], [or => "|"], [xor => "^"]) {
+ my ($op_name, $op) = @$op_info;
+ local $@;
+ eval '$_ = "\xFF" ' . $op . ' "\x{100}";';
+ like $@, qr /^Use of strings with code points over 0xFF as arguments (?#
+ )to bitwise $op_name \Q($op)\E operator is not allowed/,
+ "Use of code points above 0xFF as arguments to bitwise " .
+ "$op_name ($op) is not allowed";
+}
+
+{
+ local $@;
+ eval '$_ = ~ "\x{100}";';
+ like $@, qr /^Use of strings with code points over 0xFF as arguments (?#
+ )to 1's complement \(~\) operator is not allowed/,
+ "Use of code points above 0xFF as argument to 1's complement " .
+ "(~) is not allowed";
+}
+
+{
+ # Since these are temporary, and it was a pain to make them into loops,
+ # the code is just rolled out.
+ local $SIG{__WARN__} = sub { push @warnings, @_; };
+
+ undef @warnings;
+ is("abc" & "abc\x{100}", "abc", '"abc" & "abc\x{100}" works');
+ if (! is(@warnings, 1, "... but returned a single warning")) {
+ diag join "\n", @warnings;
+ }
+ like ($warnings[0], qr /^Use of strings with code points over 0xFF as (?#
+ )arguments to bitwise and \(&\) operator (?#
+ )is deprecated/,
+ "... which is the expected warning");
+ undef @warnings;
+ is("abc" | "abc\x{100}", "abc\x{100}", '"abc" | "abc\x{100}" works');
+ if (! is(@warnings, 1, "... but returned a single warning")) {
+ diag join "\n", @warnings;
+ }
+ like ($warnings[0], qr /^Use of strings with code points over 0xFF as (?#
+ )arguments to bitwise or \(|\) operator (?#
+ )is deprecated/,
+ "... which is the expected warning");
+ undef @warnings;
+ is("abc" ^ "abc\x{100}", "\0\0\0\x{100}", '"abc" ^ "abc\x{100}" works');
+ if (! is(@warnings, 1, "... but returned a single warning")) {
+ diag join "\n", @warnings;
+ }
+ like ($warnings[0], qr /^Use of strings with code points over 0xFF as (?#
+ )arguments to bitwise xor \(\^\) operator (?#
+ )is deprecated/,
+ "... which is the expected warning");
+ undef @warnings;
+ is("abc\x{100}" & "abc", "abc", '"abc\x{100}" & "abc" works');
+ if (! is(@warnings, 1, "... but returned a single warning")) {
+ diag join "\n", @warnings;
+ }
+ like ($warnings[0], qr /^Use of strings with code points over 0xFF as (?#
+ )arguments to bitwise and \(&\) operator (?#
+ )is deprecated/,
+ "... which is the expected warning");
+ undef @warnings;
+ is("abc\x{100}" | "abc", "abc\x{100}", '"abc\x{100}" | "abc" works');
+ if (! is(@warnings, 1, "... but returned a single warning")) {
+ diag join "\n", @warnings;
+ }
+ like ($warnings[0], qr /^Use of strings with code points over 0xFF as (?#
+ )arguments to bitwise or \(|\) operator (?#
+ )is deprecated/,
+ "... which is the expected warning");
+ undef @warnings;
+ is("abc\x{100}" ^ "abc", "\0\0\0\x{100}", '"abc\x{100}" ^ "abc" works');
+ if (! is(@warnings, 1, "... but returned a single warning")) {
+ diag join "\n", @warnings;
+ }
+ like ($warnings[0], qr /^Use of strings with code points over 0xFF as (?#
+ )arguments to bitwise xor \(\^\) operator (?#
+ )is deprecated/,
+ "... which is the expected warning");
+ no warnings 'deprecated';
+ undef @warnings;
+ my $foo = "abc" & "abc\x{100}";
+ $foo = "abc" | "abc\x{100}";
+ $foo = "abc" ^ "abc\x{100}";
+ $foo = "abc\x{100}" & "abc";
+ $foo = "abc\x{100}" | "abc";
+ $foo = "abc\x{100}" ^ "abc";
+ if (! is(@warnings, 0, "... And none of the last 6 main tests warns when 'deprecated' is off")) {
+ diag join "\n", @warnings;
+ }
+}
https://perl5.git.perl.org / perl5.git / blobdiff