package main;
$| = 1;
-use Test::More tests => 1970;
+BEGIN { require './test.pl' }
+plan tests => 5100;
+use Scalar::Util qw(tainted);
$a = new Oscalar "087";
$b= "$a";
is(ref $b, "Oscalar");
is($a, "087");
-is($b, "88");
+is($b, "89");
is(ref $a, "Oscalar");
package Oscalar;
is(ref $b, "Oscalar");
is($a, "087");
-is($b, "90");
+is($b, "91");
is(ref $a, "Oscalar");
$b=$a;
is(ref $a, "Oscalar");
is($copies, 1);
-eval q[package Oscalar; use overload ('+=' => sub {$ {$_[0]} += 3*$_[1];
+eval q[package Oscalar; use overload ('+=' => sub {$ {$_[0]} += 3*"$_[1]";
$_[0] } ) ];
$c=new Oscalar; # Cause rehash
is($aI, "xx");
is("b${aI}c", "_._.b.__.xx._.__.c._");
-# Here we test blessing to a package updates hash
+# Here we test that both "no overload" and
+# blessing to a package update hash
eval "package Oscalar; no overload '.'";
-is("b${a}", "_.b.__.xx._");
+is("b${a}", "bxx");
$x="1";
bless \$x, Oscalar;
is("b${a}c", "bxxc");
eval "package Oscalar; sub comple; use overload '~' => 'comple'";
-$na = eval { ~$a }; # Hash was not updated
-like($@, qr/no method found/);
+$na = eval { ~$a };
+is($@, '');
bless \$x, Oscalar;
$na = eval { ~$a }; # Hash updated
-warn "`$na', $@" if $@;
+warn "'$na', $@" if $@;
ok !$@;
is($na, '_!_xx_!_');
$na = 0;
-$na = eval { ~$aI }; # Hash was not updated
-like($@, qr/no method found/);
+$na = eval { ~$aI };
+like($@, '');
bless \$x, OscalarI;
eval "package Oscalar; sub rshft; use overload '>>' => 'rshft'";
-$na = eval { $aI >> 1 }; # Hash was not updated
-like($@, qr/no method found/);
+$na = eval { $aI >> 1 };
+is($@, '');
bless \$x, OscalarI;
}
sub TIESCALAR { my $pack = shift; $pack->new(@_) }
sub FETCH { shift }
- sub nop { } # Around a bug
- sub vars { my $p = shift; tie($_, $p), $_->nop foreach @_; }
+ sub vars { my $p = shift; tie($_, $p) foreach @_; }
sub STORE {
my $obj = shift;
$#$obj = 1;
sub iter { my ($x) = @_; return undef if $$x < 0; return $$x--; }
}
-# XXX iterator overload not intended to work with CORE::GLOBAL?
-if (defined &CORE::GLOBAL::glob) {
- is('1', '1');
- is('1', '1');
- is('1', '1');
-}
-else {
+{
my $iter = iterator->new(5);
my $acc = '';
my $out;
}
{
- # check the `$_[0]' is not an overloadable type warning
+ # check the '$_[0]' is not an overloadable type warning
my $a = "" ;
local $SIG{__WARN__} = sub {$a = $_[0]} ;
$x = eval ' overload::constant "fred" => sub {} ; ' ;
is($a, "");
use warnings 'overload' ;
$x = eval ' overload::constant "fred" => sub {} ; ' ;
- like($a, qr/^`fred' is not an overloadable type at/);
+ like($a, qr/^'fred' is not an overloadable type at/);
}
{
- # check the `$_[1]' is not a code reference warning
+ # check the '$_[1]' is not a code reference warning
my $a = "" ;
local $SIG{__WARN__} = sub {$a = $_[0]} ;
$x = eval ' overload::constant "integer" => 1; ' ;
is($a, "");
use warnings 'overload' ;
$x = eval ' overload::constant "integer" => 1; ' ;
- like($a, qr/^`1' is not a code reference at/);
+ like($a, qr/^'1' is not a code reference at/);
+}
+
+{
+ # check the invalid argument warning [perl #74098]
+ my $a = "" ;
+ local $SIG{__WARN__} = sub {$a = $_[0]} ;
+ $x = eval ' use overload "~|_|~" => sub{} ' ;
+ eval ' no overload "~|_|~" ' ;
+ is($a, "");
+ use warnings 'overload' ;
+ $x = eval ' use overload "~|_|~" => sub{} ' ;
+ like($a, qr/^overload arg '~\|_\|~' is invalid at \(eval \d+\) line /,
+ 'invalid arg warning');
+ undef $a;
+ eval ' no overload "~|_|~" ' ;
+ like($a, qr/^overload arg '~\|_\|~' is invalid at \(eval \d+\) line /,
+ 'invalid arg warning');
}
{
}
{
- package Numify;
- use overload (qw(0+ numify fallback 1));
-
- sub new {
- my $val = $_[1];
- bless \$val, $_[0];
- }
-
- sub numify { ${$_[0]} }
-}
-
-{
package perl31793;
use overload cmp => sub { 0 };
package perl31793_fb;
like(overload::StrVal($no), qr/^no_overload=ARRAY\(0x[0-9a-f]+\)$/);
}
-# These are all check that overloaded values rather than reference addresses
-# are what is getting tested.
+{
+ package Numify;
+ use overload (qw(0+ numify fallback 1));
+
+ sub new {
+ my $val = $_[1];
+ bless \$val, $_[0];
+ }
+
+ sub numify { ${$_[0]} }
+}
+
+# These all check that overloaded values, rather than reference addresses,
+# are what are getting tested.
my ($two, $one, $un, $deux) = map {new Numify $_} 2, 1, 1, 2;
my ($ein, $zwei) = (1, 2);
# doesn't look like a regex
ok("x" =~ $x, "qr-only matches");
ok("y" !~ $x, "qr-only doesn't match what it shouldn't");
+ ok("x" =~ /^(??{$x})$/, "qr-only with ?? matches");
+ ok("y" !~ /^(??{$x})$/, "qr-only with ?? doesn't match what it shouldn't");
ok("xx" =~ /x$x/, "qr-only matches with concat");
like("$x", qr/^QRonly=ARRAY/, "qr-only doesn't have string overload");
my $qr = bless qr/y/, "QRonly";
ok("x" =~ $qr, "qr with qr-overload uses overload");
ok("y" !~ $qr, "qr with qr-overload uses overload");
+ ok("x" =~ /^(??{$qr})$/, "qr with qr-overload with ?? uses overload");
+ ok("y" !~ /^(??{$qr})$/, "qr with qr-overload with ?? uses overload");
is("$qr", "".qr/y/, "qr with qr-overload stringify");
my $rx = $$qr;
ok("y" =~ $rx, "bare rx with qr-overload doesn't overload match");
ok("x" !~ $rx, "bare rx with qr-overload doesn't overload match");
+ ok("y" =~ /^(??{$rx})$/, "bare rx with qr-overload with ?? doesn't overload match");
+ ok("x" !~ /^(??{$rx})$/, "bare rx with qr-overload with ?? doesn't overload match");
is("$rx", "".qr/y/, "bare rx with qr-overload stringify");
}
{
$obj = bless do {my $a; \$a}, 'Shklitza';
$ref = $obj;
- is ($obj, "CLiK KLAK");
- is ($ref, "CLiK KLAK");
+ is ("$obj", "CLiK KLAK");
+ is ("$ref", "CLiK KLAK");
weaken $ref;
- is ($ref, "CLiK KLAK");
+ is ("$ref", "CLiK KLAK");
bless $obj, 'Ksshfwoom';
# We test here both a tied array and scalar, since the implementation of
# tied arrays (and hashes) is such that in rvalue context, mg_get is
# called prior to executing the op, while it isn't for a tied scalar.
+# We also check that return values are correctly tainted.
+# We try against two overload packages; one has all expected methods, the
+# other uses only fallback methods.
{
- my @terms;
+ # @tests holds a list of test cases. Each elem is an array ref with
+ # the following entries:
+ #
+ # * the value that the overload method should return
+ #
+ # * the expression to be evaled. %s is replaced with the
+ # variable being tested ($ta[0], $ts, or $plain)
+ #
+ # * a string listing what functions we expect to be called.
+ # Each method appends its name in parentheses, so "(=)(+)" means
+ # we expect the copy constructor and then the add method to be
+ # called.
+ #
+ # * like above, but what should be called for the fallback-only test
+ # (in this case, nomethod() identifies itself as "(NM:*)" where *
+ # is the op). If this value is undef, fallback tests are skipped.
+ #
+ # * An array ref of expected counts of calls to FETCH/STORE.
+ # The first three values are:
+ # 1. the expected number of FETCHs for a tied array
+ # 2. the expected number of FETCHs for a tied scalar
+ # 3. the expected number of STOREs
+ # If there are a further three elements present, then
+ # these represent the expected counts for the fallback
+ # version of the tests. If absent, they are assumed to
+ # be the same as for the full method test
+ #
+ # * Under the taint version of the tests, whether we expect
+ # the result to be tainted (for example comparison ops
+ # like '==' don't return a tainted value, even if their
+ # args are.
+ my @tests;
+
my %subs;
my $funcs;
my $use_int;
# how many times FETCH/STORE is called:
#
# Mutating ops (+=, ++ etc) trigger a copy ('='), since
- # the code can't distingish between something that's been copied:
+ # the code can't distinguish between something that's been copied:
# $a = foo->new(0); $b = $a; refcnt($$b) == 2
# and overloaded objects stored in ties which will have extra
# refcounts due to the tied_obj magic and entries on the tmps
# This accounts for a '=', and an extra STORE.
# We also have a FETCH returning the final value from the eval,
# plus a FETCH in the overload subs themselves: ($_[0][0])
- # triggers one. However, tied agregates have a mechanism to prevent
+ # triggers one. However, tied aggregates have a mechanism to prevent
# multiple fetches between STOREs, which means that the tied
# hash skips doing a FETCH during '='.
- for (qw(+ - * / % ** << >> x . & | ^)) {
- my $e = "%s $_= 3";
+ for (qw(+ - * / % ** << >> & | ^)) {
+ my $op = $_;
+ $op = '%%' if $op eq '%';
+ my $e = "%s $op= 3";
$subs{"$_="} = $e;
# ARRAY FETCH: initial, sub+=, eval-return,
# SCALAR FETCH: initial, sub=, sub+=, eval-return,
# STORE: copy, mutator
- push @terms, [ 18, $e, "$_=", '(=)', 3, 4, 2 ];
- $e = "%s $_ 3";
- $subs{$_} = $e;
+ push @tests, [ 18, $e, "(=)($_=)", "(=)(NM:$_=)", [ 3, 4, 2 ], 1 ];
+
+ $subs{$_} =
+ "do { my \$arg = %s; \$_[2] ? (3 $op \$arg) : (\$arg $op 3) }";
+ # ARRAY FETCH: initial
+ # SCALAR FETCH: initial eval-return,
+ push @tests, [ 18, "%s $op 3", "($_)", "(NM:$_)", [ 1, 2, 0 ], 1 ];
+ push @tests, [ 18, "3 $op %s", "($_)", "(NM:$_)", [ 1, 2, 0 ], 1 ];
+ }
+
+ # these use string fallback rather than nomethod
+ for (qw(x .)) {
+ my $op = $_;
+ my $e = "%s $op= 3";
+ $subs{"$_="} = $e;
+ # For normal case:
+ # ARRAY FETCH: initial, sub+=, eval-return,
+ # SCALAR FETCH: initial, sub=, sub+=, eval-return,
+ # STORE: copy, mutator
+ # for fallback, we just stringify, so eval-return and copy skipped
+
+ push @tests, [ 18, $e, "(=)($_=)", '("")',
+ [ 3, 4, 2, 2, 3, 1 ], 1 ];
+
+ $subs{$_} =
+ "do { my \$arg = %s; \$_[2] ? (3 $op \$arg) : (\$arg $op 3) }";
# ARRAY FETCH: initial
# SCALAR FETCH: initial eval-return,
- push @terms, [ 18, $e, $_, '', 1, 2, 0 ];
+ # with fallback, we just stringify, so eval-return skipped,
+ # but an extra FETCH happens in sub"", except for 'x',
+ # which passes a copy of the RV to sub"", avoiding the
+ # second FETCH
+
+ push @tests, [ 18, "%s $op 3", "($_)", '("")',
+ [ 1, 2, 0, 1, ($_ eq '.' ? 2 : 1), 0 ], 1 ];
+ next if $_ eq 'x'; # repeat only overloads on LHS
+ push @tests, [ 18, "3 $op %s", "($_)", '("")',
+ [ 1, 2, 0, 1, 2, 0 ], 1 ];
}
+
for (qw(++ --)) {
my $pre = "$_%s";
my $post = "%s$_";
$subs{$_} = $pre;
- push @terms,
+ push @tests,
# ARRAY FETCH: initial, sub+=, eval-return,
# SCALAR FETCH: initial, sub=, sub+=, eval-return,
# STORE: copy, mutator
- [ 18, $pre, $_, '(=)("")', 3, 4, 2 ],
+ [ 18, $pre, "(=)($_)(\"\")", "(=)(NM:$_)(\"\")", [ 3, 4, 2 ], 1 ],
# ARRAY FETCH: initial, sub+=
# SCALAR FETCH: initial, sub=, sub+=
# STORE: copy, mutator
- [ 18, $post, $_, '(=)("")', 2, 3, 2 ];
+ [ 18, $post, "(=)($_)(\"\")", "(=)(NM:$_)(\"\")", [ 2, 3, 2 ], 1 ];
}
# For the non-mutator ops, we have a initial FETCH,
# an extra FETCH within the sub itself for the scalar option,
# and no STOREs
- for (qw(< <= > >= == != lt le gt ge eq ne <=> cmp)) {
+ for (qw(< <= > >= == != lt le gt ge eq ne)) {
my $e = "%s $_ 3";
$subs{$_} = $e;
- push @terms, [ 3, $e, $_, '', 1, 2, 0 ];
+ push @tests, [ 3, $e, "($_)", "(NM:$_)", [ 1, 2, 0 ], 0 ];
+ }
+ for (qw(<=> cmp)) {
+ my $e = "%s $_ 3";
+ $subs{$_} = $e;
+ push @tests, [ 3, $e, "($_)", "(NM:$_)", [ 1, 2, 0 ], 1 ];
}
for (qw(atan2)) {
my $e = "$_ %s, 3";
$subs{$_} = $e;
- push @terms, [ 18, $e, $_, '', 1, 2, 0 ];
+ push @tests, [ 18, $e, "($_)", "(NM:$_)", [ 1, 2, 0 ], 1 ];
}
- for (qw(cos sin exp abs log sqrt int ! ~)) {
+ for (qw(cos sin exp abs log sqrt int ~)) {
my $e = "$_(%s)";
$subs{$_} = $e;
- push @terms, [ 1.23, $e, $_, '', 1, 2, 0 ];
+ push @tests, [ 1.23, $e, "($_)",
+ ($_ eq 'int' ? '(0+)' : "(NM:$_)") , [ 1, 2, 0 ], 1 ];
+ }
+ for (qw(!)) {
+ my $e = "$_(%s)";
+ $subs{$_} = $e;
+ push @tests, [ 1.23, $e, "($_)", '(0+)', [ 1, 2, 0 ], 0 ];
}
for (qw(-)) {
my $e = "$_(%s)";
$subs{neg} = $e;
- push @terms, [ 18, $e, 'neg', '', 1, 2, 0 ];
+ push @tests, [ 18, $e, '(neg)', '(NM:neg)', [ 1, 2, 0 ], 1 ];
}
my $e = '(%s) ? 1 : 0';
$subs{bool} = $e;
- push @terms, [ 18, $e, 'bool', '', 1, 2, 0 ];
+ push @tests, [ 18, $e, '(bool)', '(0+)', [ 1, 2, 0 ], 0 ];
# note: this is testing unary qr, not binary =~
- $subs{qr} = '(%s)';
- push @terms, [ qr/abc/, '"abc" =~ (%s)', 'qr', '', 1, 2, 0 ];
+ $subs{qr} = '(qr/%s/)';
+ push @tests, [ "abc", '"abc" =~ (%s)', '(qr)', '("")', [ 1, 2, 0 ], 0 ];
+ push @tests, [ chr 256, 'chr(256) =~ (%s)', '(qr)', '("")',
+ [ 1, 2, 0 ], 0 ];
$e = '"abc" ~~ (%s)';
$subs{'~~'} = $e;
- push @terms, [ "abc", $e, '~~', '', 1, 1, 0 ];
+ push @tests, [ "abc", $e, '(~~)', '(NM:~~)', [ 1, 1, 0 ], 0 ];
$subs{'-X'} = 'do { my $f = (%s);'
. '$_[1] eq "r" ? (-r ($f)) :'
. '$_[1] eq "l" ? (-l ($f)) :'
. '$_[1] eq "t" ? (-t ($f)) :'
. '$_[1] eq "T" ? (-T ($f)) : 0;}';
- # Note - we don't care what these filetests return, as
+ # Note - we don't care what these file tests return, as
# long as the tied and untied versions return the same value.
# The flags below are chosen to test all uses of tryAMAGICftest_MG
for (qw(r e f l t T)) {
- push @terms, [ 'TEST', "-$_ (%s)", '-X', '', 1, 2, 0 ];
+ push @tests, [ 'TEST', "-$_ (%s)", '(-X)', '("")', [ 1, 2, 0 ], 0 ];
}
$subs{'${}'} = '%s';
- push @terms, [ do {my $s=99; \$s}, '${%s}', '${}', '', 1, 1, 0 ];
+ push @tests, [ do {my $s=99; \$s}, '${%s}', '(${})', undef, [ 1, 1, 0 ], 0 ];
# we skip testing '@{}' here because too much of this test
- # framework involves array deredfences!
+ # framework involves array dereferences!
$subs{'%{}'} = '%s';
- push @terms, [ {qw(a 1 b 2 c 3)}, 'join "", sort keys %%{%s}', '%{}',
- '', 1, 2, 0 ];
+ push @tests, [ {qw(a 1 b 2 c 3)}, 'join "", sort keys %%{%s}',
+ '(%{})', undef, [ 1, 1, 0 ], 0 ];
$subs{'&{}'} = '%s';
- push @terms, [ sub {99}, 'do {&{%s} for 1,2}', '&{})(&{}', '', 2, 2, 0 ];
+ push @tests, [ sub {99}, 'do {&{%s} for 1,2}',
+ '(&{})(&{})', undef, [ 2, 2, 0 ], 0 ];
our $RT57012A = 88;
our $RT57012B;
$subs{'*{}'} = '%s';
- push @terms, [ \*RT57012A, '*RT57012B = *{%s}; our $RT57012B',
- '*{}', '', 1, 1, 0 ];
+ push @tests, [ \*RT57012A, '*RT57012B = *{%s}; our $RT57012B',
+ '(*{})', undef, [ 1, 1, 0 ], 0 ];
+
+ my $iter_text = ("some random text\n" x 100) . $^X;
+ open my $iter_fh, '<', \$iter_text
+ or die "open of \$iter_text gave ($!)\n";
+ $subs{'<>'} = '<$iter_fh>';
+ push @tests, [ $iter_fh, '<%s>', '(<>)', undef, [ 1, 1, 0 ], 1 ];
+ push @tests, [ $iter_fh,
+ 'local *CORE::GLOBAL::glob = sub {}; eval q|<%s>|',
+ '(<>)', undef, [ 1, 1, 0 ], 1 ];
+
+ # eval should do tie, overload on its arg before checking taint */
+ push @tests, [ '1;', 'eval q(eval %s); $@ =~ /Insecure/',
+ '("")', '("")', [ 1, 2, 0 ], 0 ];
- # XXX TODO: '<>'
for my $sub (keys %subs) {
my $term = $subs{$sub};
my $t = sprintf $term, '$_[0][0]';
- $subs{$sub} = eval
- "sub { \$funcs .= '($sub)'; my \$r; if (\$use_int) {"
+ my $e ="sub { \$funcs .= '($sub)'; my \$r; if (\$use_int) {"
. "use integer; \$r = ($t) } else { \$r = ($t) } \$r }";
- die $@ if $@;
+ $subs{$sub} = eval $e;
+ die "Compiling sub gave error:\n<$e>\n<$@>\n" if $@;
}
}
package RT57012_OV;
- my $other;
use overload
%subs,
- "=" => sub { $other .= '(=)'; bless [ $_[0][0] ] },
- '0+' => sub { $other .= '(0+)'; 0 + $_[0][0] },
- '""' => sub { $other .= '("")'; "$_[0][0]" },
+ "=" => sub { $funcs .= '(=)'; bless [ $_[0][0] ] },
+ '0+' => sub { $funcs .= '(0+)'; 0 + $_[0][0] },
+ '""' => sub { $funcs .= '("")'; "$_[0][0]" },
+ ;
+
+ package RT57012_OV_FB; # only contains fallback conversion functions
+
+ use overload
+ "=" => sub { $funcs .= '(=)'; bless [ $_[0][0] ] },
+ '0+' => sub { $funcs .= '(0+)'; 0 + $_[0][0] },
+ '""' => sub { $funcs .= '("")'; "$_[0][0]" },
+ "nomethod" => sub {
+ $funcs .= "(NM:$_[3])";
+ my $e = defined($_[1])
+ ? $_[3] eq 'atan2'
+ ? $_[2]
+ ? "atan2(\$_[1],\$_[0][0])"
+ : "atan2(\$_[0][0],\$_[1])"
+ : $_[2]
+ ? "\$_[1] $_[3] \$_[0][0]"
+ : "\$_[0][0] $_[3] \$_[1]"
+ : $_[3] eq 'neg'
+ ? "-\$_[0][0]"
+ : "$_[3](\$_[0][0])";
+ my $r;
+ if ($use_int) {
+ use integer; $r = eval $e;
+ }
+ else {
+ $r = eval $e;
+ }
+ ::diag("eval of nomethod <$e> gave <$@>") if $@;
+ $r;
+ }
+
;
package RT57012_TIE_S;
my $tie_val;
- sub TIESCALAR { bless [ bless [ $tie_val ], 'RT57012_OV' ] }
+ sub TIESCALAR { bless [ bless [ $tie_val ], $_[1] ] }
sub FETCH { $fetches++; $_[0][0] }
sub STORE { $stores++; $_[0][0] = $_[1] }
package main;
- for my $term (@terms) {
- my ($val, $sub_term, $exp_funcs, $exp_side,
- $exp_fetch_a, $exp_fetch_s, $exp_store) = @$term;
+ for my $test (@tests) {
+ my ($val, $sub_term, $exp_funcs, $exp_fb_funcs,
+ $exp_counts, $exp_taint) = @$test;
+
+ my $tainted_val;
+ {
+ # create tainted version of $val (unless its a ref)
+ my $t = substr($^X,0,0);
+ my $t0 = $t."0";
+ my $val1 = $val; # use a copy to avoid stringifying original
+ $tainted_val = ref($val1) ? $val :
+ ($val1 =~ /^[\d\.]+$/) ? $val+$t0 : $val.$t;
+ }
+ $tie_val = $tainted_val;
- $tie_val = $val;
for my $int ('', 'use integer; ') {
$use_int = ($int ne '');
- for my $var ('$ta[0]', '$ts') {
- my $exp_fetch = ($var eq '$ts') ? $exp_fetch_s : $exp_fetch_a;
- tie my $ts, 'RT57012_TIE_S';
+ my $plain = $tainted_val;
+ my $plain_term = $int . sprintf $sub_term, '$plain';
+ my $exp = eval $plain_term;
+ diag("eval of plain_term <$plain_term> gave <$@>") if $@;
+ is(tainted($exp), $exp_taint,
+ "<$plain_term> taint of expected return");
+
+ for my $ov_pkg (qw(RT57012_OV RT57012_OV_FB)) {
+ next if $ov_pkg eq 'RT57012_OV_FB'
+ and not defined $exp_fb_funcs;
+ my ($exp_fetch_a, $exp_fetch_s, $exp_store) =
+ ($ov_pkg eq 'RT57012_OV' || @$exp_counts < 4)
+ ? @$exp_counts[0,1,2]
+ : @$exp_counts[3,4,5];
+
+ tie my $ts, 'RT57012_TIE_S', $ov_pkg;
tie my @ta, 'RT57012_TIE_A';
- $ta[0] = bless [ $val ], 'RT57012_OV';
- my $x = $val;
- my $tied_term = $int . sprintf $sub_term, $var;
- my $plain_term = $int . sprintf $sub_term, '$x';
-
- $other = ''; $funcs = '';
-
- $fetches = 0;
- $stores = 0;
- my $res = eval $tied_term;
- $res = "$res";
- my $exp = eval $plain_term;
- $exp = "$exp";
- is ($res, $exp, "tied '$tied_term' return value");
- is ($funcs, "($exp_funcs)", "tied '$tied_term' methods called");
- is ($other, $exp_side, "tied '$tied_term' side effects called");
- is ($fetches, $exp_fetch, "tied '$tied_term' FETCH count");
- is ($stores, $exp_store, "tied '$tied_term' STORE count");
+ $ta[0] = bless [ $tainted_val ], $ov_pkg;
+ my $oload = bless [ $tainted_val ], $ov_pkg;
+
+ for my $var ('$ta[0]', '$ts', '$oload',
+ ($sub_term eq '<%s>' ? '${ts}' : ())
+ ) {
+
+ $funcs = '';
+ $fetches = 0;
+ $stores = 0;
+
+ my $res_term = $int . sprintf $sub_term, $var;
+ my $desc = "<$res_term> $ov_pkg" ;
+ my $res = eval $res_term;
+ diag("eval of res_term $desc gave <$@>") if $@;
+ # uniquely, the inc/dec ops return the original
+ # ref rather than a copy, so stringify it to
+ # find out if its tainted
+ $res = "$res" if $res_term =~ /\+\+|--/;
+ is(tainted($res), $exp_taint,
+ "$desc taint of result return");
+ is($res, $exp, "$desc return value");
+ my $fns =($ov_pkg eq 'RT57012_OV_FB')
+ ? $exp_fb_funcs : $exp_funcs;
+ if ($var eq '$oload' && $res_term !~ /oload(\+\+|--)/) {
+ # non-tied overloading doesn't trigger a copy
+ # except for post inc/dec
+ $fns =~ s/^\(=\)//;
+ }
+ is($funcs, $fns, "$desc methods called");
+ next if $var eq '$oload';
+ my $exp_fetch = ($var eq '$ts') ?
+ $exp_fetch_s : $exp_fetch_a;
+ is($fetches, $exp_fetch, "$desc FETCH count");
+ is($stores, $exp_store, "$desc STORE count");
+
+ }
+
}
}
}
}
+# Test overload from the main package
+fresh_perl_is
+ '$^W = 1; use overload q\""\ => sub {"ning"}; print bless []',
+ 'ning',
+ { switches => ['-wl'], stderr => 1 },
+ 'use overload from the main package'
+;
+
+{
+ package blessed_methods;
+ use overload '+' => sub {};
+ bless overload::Method __PACKAGE__,'+';
+ eval { overload::Method __PACKAGE__,'+' };
+ ::is($@, '', 'overload::Method and blessed overload methods');
+}
+
+{
+ # fallback to 'cmp' and '<=>' with heterogeneous operands
+ # [perl #71286]
+ my $not_found = 'no method found';
+ my $used = 0;
+ package CmpBase;
+ sub new {
+ my $n = $_[1] || 0;
+ bless \$n, ref $_[0] || $_[0];
+ }
+ sub cmp {
+ $used = \$_[0];
+ (${$_[0]} <=> ${$_[1]}) * ($_[2] ? -1 : 1);
+ }
+
+ package NCmp;
+ use base 'CmpBase';
+ use overload '<=>' => 'cmp';
+
+ package SCmp;
+ use base 'CmpBase';
+ use overload 'cmp' => 'cmp';
+
+ package main;
+ my $n = NCmp->new(5);
+ my $s = SCmp->new(3);
+ my $res;
+
+ eval { $res = $n > $s; };
+ $res = $not_found if $@ =~ /$not_found/;
+ is($res, 1, 'A>B using A<=> when B overloaded, no B<=>');
+
+ eval { $res = $s < $n; };
+ $res = $not_found if $@ =~ /$not_found/;
+ is($res, 1, 'A<B using B<=> when A overloaded, no A<=>');
+
+ eval { $res = $s lt $n; };
+ $res = $not_found if $@ =~ /$not_found/;
+ is($res, 1, 'A lt B using A:cmp when B overloaded, no B:cmp');
+
+ eval { $res = $n gt $s; };
+ $res = $not_found if $@ =~ /$not_found/;
+ is($res, 1, 'A gt B using B:cmp when A overloaded, no A:cmp');
+
+ my $o = NCmp->new(9);
+ $res = $n < $o;
+ is($used, \$n, 'A < B uses <=> from A in preference to B');
+
+ my $t = SCmp->new(7);
+ $res = $s lt $t;
+ is($used, \$s, 'A lt B uses cmp from A in preference to B');
+}
+
+{
+ # Combinatorial testing of 'fallback' and 'nomethod'
+ # [perl #71286]
+ package NuMB;
+ use overload '0+' => sub { ${$_[0]}; },
+ '""' => 'str';
+ sub new {
+ my $self = shift;
+ my $n = @_ ? shift : 0;
+ bless my $obj = \$n, ref $self || $self;
+ }
+ sub str {
+ no strict qw/refs/;
+ my $s = "(${$_[0]} ";
+ $s .= "nomethod, " if defined ${ref($_[0]).'::(nomethod'};
+ my $fb = ${ref($_[0]).'::()'};
+ $s .= "fb=" . (defined $fb ? 0 + $fb : 'undef') . ")";
+ }
+ sub nomethod { "${$_[0]}.nomethod"; }
+
+ # create classes for tests
+ package main;
+ my @falls = (0, 'undef', 1);
+ my @nomethods = ('', 'nomethod');
+ my $not_found = 'no method found';
+ for my $fall (@falls) {
+ for my $nomethod (@nomethods) {
+ my $nomethod_decl = $nomethod
+ ? $nomethod . "=>'nomethod'," : '';
+ eval qq{
+ package NuMB$fall$nomethod;
+ use base qw/NuMB/;
+ use overload $nomethod_decl
+ fallback => $fall;
+ };
+ }
+ }
+
+ # operation and precedence of 'fallback' and 'nomethod'
+ # for all combinations with 2 overloaded operands
+ for my $nomethod2 (@nomethods) {
+ for my $nomethod1 (@nomethods) {
+ for my $fall2 (@falls) {
+ my $pack2 = "NuMB$fall2$nomethod2";
+ for my $fall1 (@falls) {
+ my $pack1 = "NuMB$fall1$nomethod1";
+ my ($test, $out, $exp);
+ eval qq{
+ my \$x = $pack1->new(2);
+ my \$y = $pack2->new(3);
+ \$test = "\$x" . ' * ' . "\$y";
+ \$out = \$x * \$y;
+ };
+ $out = $not_found if $@ =~ /$not_found/;
+ $exp = $nomethod1 ? '2.nomethod' :
+ $nomethod2 ? '3.nomethod' :
+ $fall1 eq '1' && $fall2 eq '1' ? 6
+ : $not_found;
+ is($out, $exp, "$test --> $exp");
+ }
+ }
+ }
+ }
+
+ # operation of 'fallback' and 'nomethod'
+ # where the other operand is not overloaded
+ for my $nomethod (@nomethods) {
+ for my $fall (@falls) {
+ my ($test, $out, $exp);
+ eval qq{
+ my \$x = NuMB$fall$nomethod->new(2);
+ \$test = "\$x" . ' * 3';
+ \$out = \$x * 3;
+ };
+ $out = $not_found if $@ =~ /$not_found/;
+ $exp = $nomethod ? '2.nomethod' :
+ $fall eq '1' ? 6
+ : $not_found;
+ is($out, $exp, "$test --> $exp");
+
+ eval qq{
+ my \$x = NuMB$fall$nomethod->new(2);
+ \$test = '3 * ' . "\$x";
+ \$out = 3 * \$x;
+ };
+ $out = $not_found if $@ =~ /$not_found/;
+ is($out, $exp, "$test --> $exp");
+ }
+ }
+}
+
+# since 5.6 overloaded <> was leaving an extra arg on the stack!
+
+{
+ package Iter1;
+ use overload '<>' => sub { 11 };
+ package main;
+ my $a = bless [], 'Iter1';
+ my $x;
+ my @a = (10, ($x = <$a>), 12);
+ is ($a[0], 10, 'Iter1: a[0]');
+ is ($a[1], 11, 'Iter1: a[1]');
+ is ($a[2], 12, 'Iter1: a[2]');
+ @a = (10, ($x .= <$a>), 12);
+ is ($a[0], 10, 'Iter1: a[0] concat');
+ is ($a[1], 1111, 'Iter1: a[1] concat');
+ is ($a[2], 12, 'Iter1: a[2] concat');
+}
+
+# Some tests for error messages
+{
+ package Justus;
+ use overload '+' => 'justice';
+ eval {"".bless[]};
+ ::like $@, qr/^Can't resolve method "justice" overloading "\+" in p(?x:
+ )ackage "Justus" at /,
+ 'Error message when explicitly named overload method does not exist';
+
+ package JustUs;
+ our @ISA = 'JustYou';
+ package JustYou { use overload '+' => 'injustice'; }
+ "JustUs"->${\"(+"};
+ eval {"".bless []};
+ ::like $@, qr/^Stub found while resolving method "\?{3}" overloadin(?x:
+ )g "\+" in package "JustUs" at /,
+ 'Error message when sub stub is encountered';
+}
+
+{
+ # check that the right number of stringifications
+ # and the correct un-utf8-ifying happen on regex compile
+ package utf8_match;
+ my $c;
+ use overload '""' => sub { $c++; $_[0][0] ? "^\x{100}\$" : "^A\$"; };
+ my $o = bless [0], 'utf8_match';
+
+ $o->[0] = 0;
+ $c = 0;
+ ::ok("A" =~ "^A\$", "regex stringify utf8=0 ol=0 bytes=0");
+ ::ok("A" =~ $o, "regex stringify utf8=0 ol=1 bytes=0");
+ ::is($c, 1, "regex stringify utf8=0 ol=1 bytes=0 count");
+
+ $o->[0] = 1;
+ $c = 0;
+ ::ok("\x{100}" =~ "^\x{100}\$",
+ "regex stringify utf8=1 ol=0 bytes=0");
+ ::ok("\x{100}" =~ $o, "regex stringify utf8=1 ol=1 bytes=0");
+ ::is($c, 1, "regex stringify utf8=1 ol=1 bytes=0 count");
+
+ use bytes;
+
+ $o->[0] = 0;
+ $c = 0;
+ ::ok("A" =~ "^A\$", "regex stringify utf8=0 ol=0 bytes=1");
+ ::ok("A" =~ $o, "regex stringify utf8=0 ol=1 bytes=1");
+ ::is($c, 1, "regex stringify utf8=0 ol=1 bytes=1 count");
+
+ $o->[0] = 1;
+ $c = 0;
+ ::ok("\xc4\x80" =~ "^\x{100}\$",
+ "regex stringify utf8=1 ol=0 bytes=1");
+ ::ok("\xc4\x80" =~ $o, "regex stringify utf8=1 ol=1 bytes=1");
+ ::is($c, 1, "regex stringify utf8=1 ol=1 bytes=1 count");
+
+
+}
+
+# [perl #40333]
+# overload::Overloaded should not use a ->can designed for autoloading.
+# This example attempts to be as realistic as possible. The o class has a
+# default singleton object, but can have instances, too. The proxy class
+# represents proxies for o objects, but class methods delegate to the
+# singleton.
+# overload::Overloaded used to return incorrect results for proxy objects.
+package proxy {
+ sub new { bless [$_[1]], $_[0] }
+ sub AUTOLOAD {
+ our $AUTOLOAD =~ s/.*:://;
+ &_self->$AUTOLOAD;
+ }
+ sub can { SUPER::can{@_} || &_self->can($_[1]) }
+ sub _self { ref $_[0] ? $_[0][0] : $o::singleton }
+}
+package o { use overload '""' => sub { 'keck' };
+ sub new { bless[], $_[0] }
+ our $singleton = o->new; }
+ok !overload::Overloaded(new proxy new o),
+ 'overload::Overloaded does not incorrectly return true for proxy classes';
+
+# Another test, based on the type of explosive test class for which
+# perl #40333 was filed.
+{
+ package broken_can;
+ sub can {}
+ use overload '""' => sub {"Ahoy!"};
+
+ package main;
+ my $obj = bless [], 'broken_can';
+ ok(overload::Overloaded($obj));
+}
+
+sub eleventative::cos { 'eleven' }
+sub twelvetative::abs { 'twelve' }
+sub thirteentative::abs { 'thirteen' }
+sub fourteentative::abs { 'fourteen' }
+@eleventative::ISA = twelvetative::;
+{
+ my $o = bless [], 'eleventative';
+ eval 'package eleventative; use overload map +($_)x2, cos=>abs=>';
+ is cos $o, 'eleven', 'overloading applies to object blessed before';
+ bless [], 'eleventative';
+ is cos $o, 'eleven',
+ 'ovrld applies to previously-blessed obj after other obj is blessed';
+ $o = bless [], 'eleventative';
+ *eleventative::cos = sub { 'ten' };
+ is cos $o, 'ten', 'method changes affect overloading';
+ @eleventative::ISA = thirteentative::;
+ is abs $o, 'thirteen', 'isa changes affect overloading';
+ bless $o, 'fourteentative';
+ @fourteentative::ISA = 'eleventative';
+ is abs $o, 'fourteen', 'isa changes can turn overloading on';
+}
+
+# no overload "fallback";
+{ package phake;
+ use overload fallback => 1, '""' => sub { 'arakas' };
+ no overload 'fallback';
+}
+$a = bless [], 'phake';
+is "$a", "arakas",
+ 'no overload "fallback" does not stop overload from working';
+ok !eval { () = $a eq 'mpizeli'; 1 },
+ 'no overload "fallback" resets fallback to undef on overloaded class';
+{ package ent; use overload fallback => 0, abs => sub{};
+ our@ISA = 'huorn';
+ package huorn;
+ use overload fallback => 1;
+ package ent;
+ no overload "fallback"; # disable previous declaration
+}
+$a = bless [], ent::;
+is eval {"$a"}, overload::StrVal($a),
+ 'no overload undoes fallback declaration completetly'
+ or diag $@;
+
+# inherited fallback
+{
+ package pervyy;
+ our @ISA = 'vtoryy';
+ use overload "abs" =>=> sub {};
+ package vtoryy;
+ use overload fallback => 1, 'sin' =>=> sub{}
+}
+$a = bless [], pervyy::;
+is eval {"$a"}, overload::StrVal($a),
+ 'fallback is inherited by classes that have their own overloading'
+ or diag $@;
+
+# package separators in method names
+{
+ package mane;
+ use overload q\""\ => "bear::strength";
+ use overload bool => "bear'bouillon";
+}
+@bear::ISA = 'food';
+sub food::strength { 'twine' }
+sub food::bouillon { 0 }
+$a = bless[], mane::;
+is eval { "$a" }, 'twine', ':: in method name' or diag $@;
+is eval { !$a }, 1, "' in method name" or diag $@;
+
+# [perl #113050] Half of CPAN assumes fallback is under "()"
+{
+ package dodo;
+ use overload '+' => sub {};
+ no strict;
+ *{"dodo::()"} = sub{};
+ ${"dodo::()"} = 1;
+}
+$a = bless [],'dodo';
+is eval {"$a"}, overload::StrVal($a), 'fallback is stored under "()"';
+
+
+{ # undefining the overload stash -- KEEP THIS TEST LAST
+ package ant;
+ use overload '+' => 'onion';
+ $_ = \&overload::nil;
+ undef %overload::;
+ ()=0+bless[];
+ ::ok(1, 'no crash when undefining %overload::');
+}
+
+
# EOF
https://perl5.git.perl.org / perl5.git / blobdiff