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

#!./perl

BEGIN {
    chdir 't' if -d 't';
    require './test.pl';
    set_up_inc('../lib');
}
use strict;
use warnings;
no warnings 'uninitialized';
no warnings 'experimental::smartmatch';

++$|;

use Tie::Array;
use Tie::Hash;

# Predeclare vars used in the tests:
my @empty;
my %empty;
my @sparse; $sparse[2] = 2;

my $deep1 = []; push @$deep1, $deep1;
my $deep2 = []; push @$deep2, $deep2;

my @nums = (1..10);
tie my @tied_nums, 'Tie::StdArray';
@tied_nums =  (1..10);

my %hash = (foo => 17, bar => 23);
tie my %tied_hash, 'Tie::StdHash';
%tied_hash = %hash;

{
    package Test::Object::NoOverload;
    sub new { bless { key => 1 } }
}

{
    package Test::Object::StringOverload;
    use overload '""' => sub { "object" }, fallback => 1;
    sub new { bless { key => 1 } }
}

{
    package Test::Object::WithOverload;
    sub new { bless { key => ($_[1] // 'magic') } }
    use overload '~~' => sub {
	my %hash = %{ $_[0] };
	if ($_[2]) { # arguments reversed ?
	    return $_[1] eq reverse $hash{key};
	}
	else {
	    return $_[1] eq $hash{key};
	}
    };
    use overload '""' => sub { "stringified" };
    use overload 'eq' => sub {"$_[0]" eq "$_[1]"};
}

our $ov_obj = Test::Object::WithOverload->new;
our $ov_obj_2 = Test::Object::WithOverload->new("object");
our $obj = Test::Object::NoOverload->new;
our $str_obj = Test::Object::StringOverload->new;

my %refh;
unless (is_miniperl()) {
    require Tie::RefHash;
    tie %refh, 'Tie::RefHash';
    $refh{$ov_obj} = 1;
}

my @keyandmore = qw(key and more);
my @fooormore = qw(foo or more);
my %keyandmore = map { $_ => 0 } @keyandmore;
my %fooormore = map { $_ => 0 } @fooormore;

# Load and run the tests
plan tests => 349+2;

while (<DATA>) {
  SKIP: {
    next if /^#/ || !/\S/;
    chomp;
    my ($yn, $left, $right, $note) = split /\t+/;

    local $::TODO = $note =~ /TODO/;

    die "Bad test spec: ($yn, $left, $right)" if $yn =~ /[^!@=]/;

    my $tstr = "$left ~~ $right";

    test_again:
    my $res;
    if ($note =~ /NOWARNINGS/) {
	$res = eval "no warnings; $tstr";
    }
    else {
	skip_if_miniperl("Doesn't work with miniperl", $yn =~ /=/ ? 2 : 1)
	    if $note =~ /MINISKIP/;
	$res = eval $tstr;
    }

    chomp $@;

    if ( $yn =~ /@/ ) {
	ok( $@ ne '', "$tstr dies" )
	    and print "# \$\@ was: $@\n";
    } else {
	my $test_name = $tstr . ($yn =~ /!/ ? " does not match" : " matches");
	if ( $@ ne '' ) {
	    fail($test_name);
	    print "# \$\@ was: $@\n";
	} else {
	    ok( ($yn =~ /!/ xor $res), $test_name );
	}
    }

    if ( $yn =~ s/=// ) {
	$tstr = "$right ~~ $left";
	goto test_again;
    }
  }
}

sub foo {}
sub bar {42}
sub gorch {42}
sub fatal {die "fatal sub\n"}

# to test constant folding
sub FALSE() { 0 }
sub TRUE() { 1 }
sub NOT_DEF() { undef }

{
  # [perl #123860]
  # this can but might not crash
  # This can but might not crash
  #
  # The second smartmatch would leave a &PL_sv_no on the stack for
  # each key it checked in %!, this could then cause various types of
  # crash or assertion failure.
  #
  # This isn't guaranteed to crash, but if the stack issue is
  # re-introduced it will probably crash in one of the many smoke
  # builds.
  fresh_perl_is('print (q(x) ~~ q(x)) | (/x/ ~~ %!)', "1",
		{ switches => [ "-MErrno", "-M-warnings=experimental::smartmatch" ] },
		 "don't fill the stack with rubbish");
}

{
    # [perl #123860] continued;
    # smartmatch was failing to SPAGAIN after pushing an SV and calling
    # pp_match, which may have resulted in the stack being realloced
    # in the meantime. Test this by filling the stack with pregressively
    # larger amounts of data. At some point the stack will get realloced.
    my @a = qw(x);
    my %h = qw(x 1);
    my @args;
    my $x = 1;
    my $bad = -1;
    for (1..1000)  {
        push @args, $_;
        my $exp_n  = join '-',  (@args, $x == 0);
        my $exp_y  = join '-',  (@args, $x == 1);

        my $got_an = join '-',  (@args, (/X/ ~~ @a));
        my $got_ay = join '-',  (@args, (/x/ ~~ @a));
        my $got_hn = join '-',  (@args, (/X/ ~~ %h));
        my $got_hy = join '-',  (@args, (/x/ ~~ %h));

        if (   $exp_n ne $got_an || $exp_n ne $got_hn
            || $exp_y ne $got_ay || $exp_y ne $got_hy
        ) {
            $bad = $_;
            last;
        }
    }
    is($bad, -1, "RT 123860: stack realloc");
}


# Prefix character :
#   - expected to match
# ! - expected to not match
# @ - expected to be a compilation failure
# = - expected to match symmetrically (runs test twice)
# Data types to test :
#   undef
#   Object-overloaded
#   Object
#   Coderef
#   Hash
#   Hashref
#   Array
#   Arrayref
#   Tied arrays and hashes
#   Arrays that reference themselves
#   Regex (// and qr//)
#   Range
#   Num
#   Str
# Other syntactic items of interest:
#   Constants
#   Values returned by a sub call
__DATA__
# Any ~~ undef
!	$ov_obj		undef
!	$obj		undef
!	sub {}		undef
!	%hash		undef
!	\%hash		undef
!	{}		undef
!	@nums		undef
!	\@nums		undef
!	[]		undef
!	%tied_hash	undef
!	@tied_nums	undef
!	$deep1		undef
!	/foo/		undef
!	qr/foo/		undef
!	21..30		undef
!	189		undef
!	"foo"		undef
!	""		undef
!	!1		undef
	undef		undef
	(my $u)		undef
	NOT_DEF		undef
	&NOT_DEF	undef

# Any ~~ object overloaded
!	\&fatal		$ov_obj
	'cigam'		$ov_obj
!	'cigam on'	$ov_obj
!	['cigam']	$ov_obj
!	['stringified']	$ov_obj
!	{ cigam => 1 }	$ov_obj
!	{ stringified => 1 }	$ov_obj
!	$obj		$ov_obj
!	undef		$ov_obj

# regular object
@	$obj		$obj
@	$ov_obj		$obj
=@	\&fatal		$obj
@	\&FALSE		$obj
@	\&foo		$obj
@	sub { 1 }	$obj
@	sub { 0 }	$obj
@	%keyandmore	$obj
@	{"key" => 1}	$obj
@	@fooormore	$obj
@	["key" => 1]	$obj
@	/key/		$obj
@	qr/key/		$obj
@	"key"		$obj
@	FALSE		$obj

# regular object with "" overload
@	$obj		$str_obj
=@	\&fatal		$str_obj
@	\&FALSE		$str_obj
@	\&foo		$str_obj
@	sub { 1 }	$str_obj
@	sub { 0 }	$str_obj
@	%keyandmore	$str_obj
@	{"object" => 1}	$str_obj
@	@fooormore	$str_obj
@	["object" => 1]	$str_obj
@	/object/	$str_obj
@	qr/object/	$str_obj
@	"object"	$str_obj
@	FALSE		$str_obj
# Those will treat the $str_obj as a string because of fallback:

# object (overloaded or not) ~~ Any
	$obj		qr/NoOverload/
	$ov_obj		qr/^stringified$/
=	"$ov_obj"	"stringified"
=	"$str_obj"	"object"
!=	$ov_obj		"stringified"
	$str_obj	"object"
	$ov_obj		'magic'
!	$ov_obj		'not magic'

# ~~ Coderef
	sub{0}		sub { ref $_[0] eq "CODE" }
	%fooormore	sub { $_[0] =~ /^(foo|or|more)$/ }
!	%fooormore	sub { $_[0] =~ /^(foo|or|less)$/ }
	\%fooormore	sub { $_[0] =~ /^(foo|or|more)$/ }
!	\%fooormore	sub { $_[0] =~ /^(foo|or|less)$/ }
	+{%fooormore}	sub { $_[0] =~ /^(foo|or|more)$/ }
!	+{%fooormore}	sub { $_[0] =~ /^(foo|or|less)$/ }
	@fooormore	sub { $_[0] =~ /^(foo|or|more)$/ }
!	@fooormore	sub { $_[0] =~ /^(foo|or|less)$/ }
	\@fooormore	sub { $_[0] =~ /^(foo|or|more)$/ }
!	\@fooormore	sub { $_[0] =~ /^(foo|or|less)$/ }
	[@fooormore]	sub { $_[0] =~ /^(foo|or|more)$/ }
!	[@fooormore]	sub { $_[0] =~ /^(foo|or|less)$/ }
	%fooormore	sub{@_==1}
	@fooormore	sub{@_==1}
	"foo"		sub { $_[0] =~ /^(foo|or|more)$/ }
!	"more"		sub { $_[0] =~ /^(foo|or|less)$/ }
	/fooormore/	sub{ref $_[0] eq 'Regexp'}
	qr/fooormore/	sub{ref $_[0] eq 'Regexp'}
	1		sub{shift}
!	0		sub{shift}
!	undef		sub{shift}
	undef		sub{not shift}
	NOT_DEF		sub{not shift}
	&NOT_DEF	sub{not shift}
	FALSE		sub{not shift}
	[1]		\&bar
	{a=>1}		\&bar
	qr//		\&bar
!	[1]		\&foo
!	{a=>1}		\&foo
	$obj		sub { ref($_[0]) =~ /NoOverload/ }
	$ov_obj		sub { ref($_[0]) =~ /WithOverload/ }
# empty stuff matches, because the sub is never called:
	[]		\&foo
	{}		\&foo
	@empty		\&foo
	%empty		\&foo
!	qr//		\&foo
!	undef		\&foo
	undef		\&bar
@	undef		\&fatal
@	1		\&fatal
@	[1]		\&fatal
@	{a=>1}		\&fatal
@	"foo"		\&fatal
@	qr//		\&fatal
# sub is not called on empty hashes / arrays
	[]		\&fatal
	+{}		\&fatal
	@empty		\&fatal
	%empty		\&fatal
# sub is not special on the left
	sub {0}		qr/^CODE/
	sub {0}		sub { ref shift eq "CODE" }

# HASH ref against:
#   - another hash ref
	{}		{}
=!	{}		{1 => 2}
	{1 => 2}	{1 => 2}
	{1 => 2}	{1 => 3}
=!	{1 => 2}	{2 => 3}
=	\%main::	{map {$_ => 'x'} keys %main::}

#  - tied hash ref
=	\%hash		\%tied_hash
	\%tied_hash	\%tied_hash
!=	{"a"=>"b"}	\%tied_hash
=	%hash		%tied_hash
	%tied_hash	%tied_hash
!=	{"a"=>"b"}	%tied_hash
	$ov_obj		%refh		MINISKIP
!	"$ov_obj"	%refh		MINISKIP
	[$ov_obj]	%refh		MINISKIP
!	["$ov_obj"]	%refh		MINISKIP
	%refh		%refh		MINISKIP

#  - an array ref
#  (since this is symmetrical, tests as well hash~~array)
=	[keys %main::]	\%::
=	[qw[STDIN STDOUT]]	\%::
=!	[]		\%::
=!	[""]		{}
=!	[]		{}
=!	@empty		{}
=	[undef]		{"" => 1}
=	[""]		{"" => 1}
=	["foo"]		{ foo => 1 }
=	["foo", "bar"]	{ foo => 1 }
=	["foo", "bar"]	\%hash
=	["foo"]		\%hash
=!	["quux"]	\%hash
=	[qw(foo quux)]	\%hash
=	@fooormore	{ foo => 1, or => 2, more => 3 }
=	@fooormore	%fooormore
=	@fooormore	\%fooormore
=	\@fooormore	%fooormore

#  - a regex
=	qr/^(fo[ox])$/		{foo => 1}
=	/^(fo[ox])$/		%fooormore
=!	qr/[13579]$/		+{0..99}
=!	qr/a*/			{}
=	qr/a*/			{b=>2}
=	qr/B/i			{b=>2}
=	/B/i			{b=>2}
=!	qr/a+/			{b=>2}
=	qr/^à/			{"à"=>2}

#  - a scalar
	"foo"		+{foo => 1, bar => 2}
	"foo"		%fooormore
!	"baz"		+{foo => 1, bar => 2}
!	"boz"		%fooormore
!	1		+{foo => 1, bar => 2}
!	1		%fooormore
	1		{ 1 => 3 }
	1.0		{ 1 => 3 }
!	"1.0"		{ 1 => 3 }
!	"1.0"		{ 1.0 => 3 }
	"1.0"		{ "1.0" => 3 }
	"à"		{ "à" => "À" }

#  - undef
!	undef		{ hop => 'zouu' }
!	undef		%hash
!	undef		+{"" => "empty key"}
!	undef		{}

# ARRAY ref against:
#  - another array ref
	[]			[]
=!	[]			[1]
	[["foo"], ["bar"]]	[qr/o/, qr/a/]
!	[["foo"], ["bar"]]	[qr/ARRAY/, qr/ARRAY/]
	["foo", "bar"]		[qr/o/, qr/a/]
!	[qr/o/, qr/a/]		["foo", "bar"]
	["foo", "bar"]		[["foo"], ["bar"]]
!	["foo", "bar"]		[qr/o/, "foo"]
	["foo", undef, "bar"]	[qr/o/, undef, "bar"]
!	["foo", undef, "bar"]	[qr/o/, "",    "bar"]
!	["foo", "", "bar"]	[qr/o/, undef, "bar"]
	$deep1			$deep1
	@$deep1			@$deep1
!	$deep1			$deep2

=	\@nums			\@tied_nums
=	@nums			\@tied_nums
=	\@nums			@tied_nums
=	@nums			@tied_nums

#  - an object
!	$obj		@fooormore
	$obj		[sub{ref shift}]

#  - a regex
=	qr/x/		[qw(foo bar baz quux)]
=!	qr/y/		[qw(foo bar baz quux)]
=	/x/		[qw(foo bar baz quux)]
=!	/y/		[qw(foo bar baz quux)]
=	/FOO/i		@fooormore
=!	/bar/		@fooormore

# - a number
	2		[qw(1.00 2.00)]
	2		[qw(foo 2)]
	2.0_0e+0	[qw(foo 2)]
!	2		[qw(1foo bar2)]

# - a string
!	"2"		[qw(1foo 2bar)]
	"2bar"		[qw(1foo 2bar)]

# - undef
	undef		[1, 2, undef, 4]
!	undef		[1, 2, [undef], 4]
!	undef		@fooormore
	undef		@sparse
	undef		[undef]
!	0		[undef]
!	""		[undef]
!	undef		[0]
!	undef		[""]

# - nested arrays and ~~ distributivity
	11		[[11]]
!	11		[[12]]
	"foo"		[{foo => "bar"}]
!	"bar"		[{foo => "bar"}]

# Number against number
	2		2
	20		2_0
!	2		3
	0		FALSE
	3-2		TRUE
!	undef		0
!	(my $u)		0

# Number against string
=	2		"2"
=	2		"2.0"
!	2		"2bananas"
!=	2_3		"2_3"		NOWARNINGS
	FALSE		"0"
!	undef		"0"
!	undef		""

# Regex against string
	"x"		qr/x/
!	"x"		qr/y/

# Regex against number
	12345		qr/3/
!	12345		qr/7/

# array/hash against string
	@fooormore	"".\@fooormore
!	@keyandmore	"".\@fooormore
	%fooormore	"".\%fooormore
!	%keyandmore	"".\%fooormore

# Test the implicit referencing
	7		@nums
	@nums		\@nums
!	@nums		\\@nums
	@nums		[1..10]
!	@nums		[0..9]

	"foo"		%hash
	/bar/		%hash
	[qw(bar)]	%hash
!	[qw(a b c)]	%hash
	%hash		%hash
	%hash		+{%hash}
	%hash		\%hash
	%hash		%tied_hash
	%tied_hash	%tied_hash
	%hash		{ foo => 5, bar => 10 }
!	%hash		{ foo => 5, bar => 10, quux => 15 }

	@nums		{  1, '',  2, '' }
	@nums		{  1, '', 12, '' }
!	@nums		{ 11, '', 12, '' }

# array slices
	@nums[0..-1]	[]
	@nums[0..0]	[1]
!	@nums[0..1]	[0..2]
	@nums[0..4]	[1..5]

!	undef		@nums[0..-1]
	1		@nums[0..0]
	2		@nums[0..1]
!	@nums[0..1]	2

	@nums[0..1]	@nums[0..1]

# hash slices
	@keyandmore{qw(not)}		[undef]
	@keyandmore{qw(key)}		[0]

	undef				@keyandmore{qw(not)}
	0				@keyandmore{qw(key and more)}
!	2				@keyandmore{qw(key and)}

	@fooormore{qw(foo)}		@keyandmore{qw(key)}
	@fooormore{qw(foo or more)}	@keyandmore{qw(key and more)}

# UNDEF
!	3		undef
!	1		undef
!	[]		undef
!	{}		undef
!	\%::main	undef
!	[1,2]		undef
!	%hash		undef
!	@nums		undef
!	"foo"		undef
!	""		undef
!	!1		undef
!	\&foo		undef
!	sub { }		undef
Commit	Line	Data
0d863452 RH	1	#!./perl
	2
	3	BEGIN {
a817e89d	4	chdir 't' if -d 't';
0d863452	5	require './test.pl';
43ece5b1	6	set_up_inc('../lib');
0d863452 RH	7	}
0d863452 RH	8	use strict;
289d21b2 RGS	9	use warnings;
289d21b2 RGS	10	no warnings 'uninitialized';
0f539b13	11	no warnings 'experimental::smartmatch';
0d863452	12
b1741c2a TC	13	++$\|;
b1741c2a TC	14
0d863452 RH	15	use Tie::Array;
	16	use Tie::Hash;
	17
0d863452	18	# Predeclare vars used in the tests:
031a44ed RGS	19	my @empty;
031a44ed RGS	20	my %empty;
015eb7b9	21	my @sparse; $sparse[2] = 2;
031a44ed	22
1144115d RGS	23	my $deep1 = []; push @$deep1, $deep1;
1144115d RGS	24	my $deep2 = []; push @$deep2, $deep2;
0d863452	25
0d863452 RH	26	my @nums = (1..10);
	27	tie my @tied_nums, 'Tie::StdArray';
	28	@tied_nums = (1..10);
	29
	30	my %hash = (foo => 17, bar => 23);
	31	tie my %tied_hash, 'Tie::StdHash';
	32	%tied_hash = %hash;
	33
1cfb7049 YK	34	{
	35	package Test::Object::NoOverload;
	36	sub new { bless { key => 1 } }
	37	}
	38
	39	{
6fbc735b RGS	40	package Test::Object::StringOverload;
	41	use overload '""' => sub { "object" }, fallback => 1;
	42	sub new { bless { key => 1 } }
	43	}
	44
	45	{
90a32bcb	46	package Test::Object::WithOverload;
6fbc735b	47	sub new { bless { key => ($_[1] // 'magic') } }
2c9d2554 RGS	48	use overload '~~' => sub {
	49	my %hash = %{ $_[0] };
	50	if ($_[2]) { # arguments reversed ?
	51	return $_[1] eq reverse $hash{key};
	52	}
	53	else {
	54	return $_[1] eq $hash{key};
	55	}
	56	};
0483c672	57	use overload '""' => sub { "stringified" };
90a32bcb	58	use overload 'eq' => sub {"$_[0]" eq "$_[1]"};
1cfb7049 YK	59	}
1cfb7049 YK	60
90a32bcb	61	our $ov_obj = Test::Object::WithOverload->new;
6fbc735b	62	our $ov_obj_2 = Test::Object::WithOverload->new("object");
1cfb7049	63	our $obj = Test::Object::NoOverload->new;
6fbc735b	64	our $str_obj = Test::Object::StringOverload->new;
1cfb7049	65
c5836baf	66	my %refh;
d3d1232e NC	67	unless (is_miniperl()) {
d3d1232e NC	68	require Tie::RefHash;
c5836baf RGS	69	tie %refh, 'Tie::RefHash';
	70	$refh{$ov_obj} = 1;
	71	}
b15feb55	72
73aec0b1 RGS	73	my @keyandmore = qw(key and more);
	74	my @fooormore = qw(foo or more);
	75	my %keyandmore = map { $_ => 0 } @keyandmore;
	76	my %fooormore = map { $_ => 0 } @fooormore;
	77
0d863452	78	# Load and run the tests
e8fe1b7c	79	plan tests => 349+2;
0d863452	80
9e079ace	81	while (<DATA>) {
c5836baf	82	SKIP: {
9e079ace RGS	83	next if /^#/ \|\| !/\S/;
9e079ace RGS	84	chomp;
73aec0b1	85	my ($yn, $left, $right, $note) = split /\t+/;
0d863452	86
73aec0b1	87	local $::TODO = $note =~ /TODO/;
0d863452	88
85af77a5	89	die "Bad test spec: ($yn, $left, $right)" if $yn =~ /[^!@=]/;
9e079ace	90
0d863452	91	my $tstr = "$left ~~ $right";
9e079ace	92
85af77a5	93	test_again:
289d21b2 RGS	94	my $res;
	95	if ($note =~ /NOWARNINGS/) {
	96	$res = eval "no warnings; $tstr";
	97	}
	98	else {
d3d1232e NC	99	skip_if_miniperl("Doesn't work with miniperl", $yn =~ /=/ ? 2 : 1)
d3d1232e NC	100	if $note =~ /MINISKIP/;
289d21b2 RGS	101	$res = eval $tstr;
289d21b2 RGS	102	}
0d863452	103
a86f5011 YK	104	chomp $@;
a86f5011 YK	105
85af77a5	106	if ( $yn =~ /@/ ) {
9e079ace RGS	107	ok( $@ ne '', "$tstr dies" )
9e079ace RGS	108	and print "# \$\@ was: $@\n";
a86f5011	109	} else {
85af77a5	110	my $test_name = $tstr . ($yn =~ /!/ ? " does not match" : " matches");
a86f5011	111	if ( $@ ne '' ) {
9e079ace RGS	112	fail($test_name);
9e079ace RGS	113	print "# \$\@ was: $@\n";
a86f5011	114	} else {
85af77a5	115	ok( ($yn =~ /!/ xor $res), $test_name );
a86f5011 YK	116	}
a86f5011 YK	117	}
85af77a5 RGS	118
	119	if ( $yn =~ s/=// ) {
	120	$tstr = "$right ~~ $left";
	121	goto test_again;
	122	}
c5836baf	123	}
0d863452 RH	124	}
0d863452 RH	125
0d863452	126	sub foo {}
73aec0b1 RGS	127	sub bar {42}
73aec0b1 RGS	128	sub gorch {42}
1cfb7049	129	sub fatal {die "fatal sub\n"}
0d863452	130
0cfbf1ea	131	# to test constant folding
18d11902 RGS	132	sub FALSE() { 0 }
18d11902 RGS	133	sub TRUE() { 1 }
2522c35a	134	sub NOT_DEF() { undef }
0d863452	135
b1741c2a TC	136	{
	137	# [perl #123860]
	138	# this can but might not crash
b1741c2a TC	139	# This can but might not crash
	140	#
	141	# The second smartmatch would leave a &PL_sv_no on the stack for
	142	# each key it checked in %!, this could then cause various types of
	143	# crash or assertion failure.
	144	#
	145	# This isn't guaranteed to crash, but if the stack issue is
	146	# re-introduced it will probably crash in one of the many smoke
	147	# builds.
	148	fresh_perl_is('print (q(x) ~~ q(x)) \| (/x/ ~~ %!)', "1",
	149	{ switches => [ "-MErrno", "-M-warnings=experimental::smartmatch" ] },
	150	"don't fill the stack with rubbish");
	151	}
	152
e8fe1b7c DM	153	{
	154	# [perl #123860] continued;
	155	# smartmatch was failing to SPAGAIN after pushing an SV and calling
	156	# pp_match, which may have resulted in the stack being realloced
	157	# in the meantime. Test this by filling the stack with pregressively
	158	# larger amounts of data. At some point the stack will get realloced.
	159	my @a = qw(x);
	160	my %h = qw(x 1);
	161	my @args;
	162	my $x = 1;
	163	my $bad = -1;
	164	for (1..1000) {
	165	push @args, $_;
	166	my $exp_n = join '-', (@args, $x == 0);
	167	my $exp_y = join '-', (@args, $x == 1);
	168
	169	my $got_an = join '-', (@args, (/X/ ~~ @a));
	170	my $got_ay = join '-', (@args, (/x/ ~~ @a));
	171	my $got_hn = join '-', (@args, (/X/ ~~ %h));
	172	my $got_hy = join '-', (@args, (/x/ ~~ %h));
	173
	174	if ( $exp_n ne $got_an \|\| $exp_n ne $got_hn
	175	\|\| $exp_y ne $got_ay \|\| $exp_y ne $got_hy
	176	) {
	177	$bad = $_;
	178	last;
	179	}
	180	}
	181	is($bad, -1, "RT 123860: stack realloc");
	182	}
	183
	184
e5de85fa RGS	185	# Prefix character :
	186	# - expected to match
	187	# ! - expected to not match
	188	# @ - expected to be a compilation failure
85af77a5	189	# = - expected to match symmetrically (runs test twice)
73aec0b1	190	# Data types to test :
85af77a5	191	# undef
73aec0b1 RGS	192	# Object-overloaded
73aec0b1 RGS	193	# Object
73aec0b1 RGS	194	# Coderef
	195	# Hash
	196	# Hashref
	197	# Array
	198	# Arrayref
85af77a5 RGS	199	# Tied arrays and hashes
85af77a5 RGS	200	# Arrays that reference themselves
73aec0b1	201	# Regex (// and qr//)
85af77a5	202	# Range
73aec0b1 RGS	203	# Num
73aec0b1 RGS	204	# Str
85af77a5 RGS	205	# Other syntactic items of interest:
	206	# Constants
	207	# Values returned by a sub call
0d863452	208	__DATA__
85af77a5	209	# Any ~~ undef
ad0781bc	210	! $ov_obj undef
85af77a5 RGS	211	! $obj undef
	212	! sub {} undef
	213	! %hash undef
	214	! \%hash undef
	215	! {} undef
	216	! @nums undef
	217	! \@nums undef
	218	! [] undef
	219	! %tied_hash undef
	220	! @tied_nums undef
	221	! $deep1 undef
	222	! /foo/ undef
	223	! qr/foo/ undef
	224	! 21..30 undef
	225	! 189 undef
	226	! "foo" undef
	227	! "" undef
	228	! !1 undef
	229	undef undef
62ec5f58	230	(my $u) undef
2522c35a RGS	231	NOT_DEF undef
2522c35a RGS	232	&NOT_DEF undef
85af77a5 RGS	233
85af77a5 RGS	234	# Any ~~ object overloaded
ad0781bc	235	! \&fatal $ov_obj
2c9d2554 RGS	236	'cigam' $ov_obj
2c9d2554 RGS	237	! 'cigam on' $ov_obj
532217f1 RGS	238	! ['cigam'] $ov_obj
	239	! ['stringified'] $ov_obj
	240	! { cigam => 1 } $ov_obj
	241	! { stringified => 1 } $ov_obj
ad0781bc RGS	242	! $obj $ov_obj
ad0781bc RGS	243	! undef $ov_obj
1cfb7049 YK	244
1cfb7049 YK	245	# regular object
ad0781bc	246	@ $obj $obj
6d743019	247	@ $ov_obj $obj
2c9d2554	248	=@ \&fatal $obj
ad0781bc RGS	249	@ \&FALSE $obj
	250	@ \&foo $obj
	251	@ sub { 1 } $obj
	252	@ sub { 0 } $obj
	253	@ %keyandmore $obj
	254	@ {"key" => 1} $obj
	255	@ @fooormore $obj
	256	@ ["key" => 1] $obj
	257	@ /key/ $obj
	258	@ qr/key/ $obj
	259	@ "key" $obj
	260	@ FALSE $obj
	261
6fbc735b RGS	262	# regular object with "" overload
	263	@ $obj $str_obj
	264	=@ \&fatal $str_obj
	265	@ \&FALSE $str_obj
	266	@ \&foo $str_obj
	267	@ sub { 1 } $str_obj
	268	@ sub { 0 } $str_obj
	269	@ %keyandmore $str_obj
	270	@ {"object" => 1} $str_obj
	271	@ @fooormore $str_obj
	272	@ ["object" => 1] $str_obj
	273	@ /object/ $str_obj
	274	@ qr/object/ $str_obj
	275	@ "object" $str_obj
	276	@ FALSE $str_obj
	277	# Those will treat the $str_obj as a string because of fallback:
6fbc735b	278
ad0781bc	279	# object (overloaded or not) ~~ Any
0483c672 RGS	280	$obj qr/NoOverload/
0483c672 RGS	281	$ov_obj qr/^stringified$/
532217f1	282	= "$ov_obj" "stringified"
6fbc735b	283	= "$str_obj" "object"
532217f1	284	!= $ov_obj "stringified"
6fbc735b	285	$str_obj "object"
2c9d2554 RGS	286	$ov_obj 'magic'
2c9d2554 RGS	287	! $ov_obj 'not magic'
1cfb7049	288
a4a197da RGS	289	# ~~ Coderef
	290	sub{0} sub { ref $_[0] eq "CODE" }
	291	%fooormore sub { $_[0] =~ /^(foo\|or\|more)$/ }
	292	! %fooormore sub { $_[0] =~ /^(foo\|or\|less)$/ }
	293	\%fooormore sub { $_[0] =~ /^(foo\|or\|more)$/ }
	294	! \%fooormore sub { $_[0] =~ /^(foo\|or\|less)$/ }
	295	+{%fooormore} sub { $_[0] =~ /^(foo\|or\|more)$/ }
	296	! +{%fooormore} sub { $_[0] =~ /^(foo\|or\|less)$/ }
	297	@fooormore sub { $_[0] =~ /^(foo\|or\|more)$/ }
	298	! @fooormore sub { $_[0] =~ /^(foo\|or\|less)$/ }
	299	\@fooormore sub { $_[0] =~ /^(foo\|or\|more)$/ }
	300	! \@fooormore sub { $_[0] =~ /^(foo\|or\|less)$/ }
	301	[@fooormore] sub { $_[0] =~ /^(foo\|or\|more)$/ }
	302	! [@fooormore] sub { $_[0] =~ /^(foo\|or\|less)$/ }
	303	%fooormore sub{@_==1}
	304	@fooormore sub{@_==1}
	305	"foo" sub { $_[0] =~ /^(foo\|or\|more)$/ }
	306	! "more" sub { $_[0] =~ /^(foo\|or\|less)$/ }
73aec0b1	307	/fooormore/ sub{ref $_[0] eq 'Regexp'}
a4a197da RGS	308	qr/fooormore/ sub{ref $_[0] eq 'Regexp'}
	309	1 sub{shift}
	310	! 0 sub{shift}
	311	! undef sub{shift}
	312	undef sub{not shift}
031a44ed RGS	313	NOT_DEF sub{not shift}
031a44ed RGS	314	&NOT_DEF sub{not shift}
a4a197da RGS	315	FALSE sub{not shift}
	316	[1] \&bar
	317	{a=>1} \&bar
	318	qr// \&bar
	319	! [1] \&foo
	320	! {a=>1} \&foo
41e726ac	321	$obj sub { ref($_[0]) =~ /NoOverload/ }
90a32bcb	322	$ov_obj sub { ref($_[0]) =~ /WithOverload/ }
a4a197da	323	# empty stuff matches, because the sub is never called:
07edf497 RGS	324	[] \&foo
07edf497 RGS	325	{} \&foo
031a44ed RGS	326	@empty \&foo
031a44ed RGS	327	%empty \&foo
a4a197da RGS	328	! qr// \&foo
	329	! undef \&foo
	330	undef \&bar
	331	@ undef \&fatal
	332	@ 1 \&fatal
	333	@ [1] \&fatal
203d1e89	334	@ {a=>1} \&fatal
a4a197da RGS	335	@ "foo" \&fatal
a4a197da RGS	336	@ qr// \&fatal
203d1e89	337	# sub is not called on empty hashes / arrays
07edf497 RGS	338	[] \&fatal
07edf497 RGS	339	+{} \&fatal
031a44ed RGS	340	@empty \&fatal
031a44ed RGS	341	%empty \&fatal
532217f1 RGS	342	# sub is not special on the left
	343	sub {0} qr/^CODE/
	344	sub {0} sub { ref shift eq "CODE" }
0d863452	345
0d863452 RH	346	# HASH ref against:
	347	# - another hash ref
	348	{} {}
2a37c5e7	349	=! {} {1 => 2}
0d863452 RH	350	{1 => 2} {1 => 2}
0d863452 RH	351	{1 => 2} {1 => 3}
031a44ed RGS	352	=! {1 => 2} {2 => 3}
031a44ed RGS	353	= \%main:: {map {$_ => 'x'} keys %main::}
0d863452 RH	354
0d863452 RH	355	# - tied hash ref
2522c35a	356	= \%hash \%tied_hash
0d863452	357	\%tied_hash \%tied_hash
031a44ed RGS	358	!= {"a"=>"b"} \%tied_hash
	359	= %hash %tied_hash
	360	%tied_hash %tied_hash
	361	!= {"a"=>"b"} %tied_hash
c5836baf RGS	362	$ov_obj %refh MINISKIP
	363	! "$ov_obj" %refh MINISKIP
	364	[$ov_obj] %refh MINISKIP
	365	! ["$ov_obj"] %refh MINISKIP
	366	%refh %refh MINISKIP
0d863452 RH	367
0d863452 RH	368	# - an array ref
031a44ed RGS	369	# (since this is symmetrical, tests as well hash~~array)
	370	= [keys %main::] \%::
	371	= [qw[STDIN STDOUT]] \%::
	372	=! [] \%::
	373	=! [""] {}
	374	=! [] {}
	375	=! @empty {}
	376	= [undef] {"" => 1}
	377	= [""] {"" => 1}
	378	= ["foo"] { foo => 1 }
	379	= ["foo", "bar"] { foo => 1 }
	380	= ["foo", "bar"] \%hash
	381	= ["foo"] \%hash
	382	=! ["quux"] \%hash
	383	= [qw(foo quux)] \%hash
	384	= @fooormore { foo => 1, or => 2, more => 3 }
	385	= @fooormore %fooormore
	386	= @fooormore \%fooormore
	387	= \@fooormore %fooormore
0d863452 RH	388
0d863452 RH	389	# - a regex
ea0c2dbd RGS	390	= qr/^(fo[ox])$/ {foo => 1}
ea0c2dbd RGS	391	= /^(fo[ox])$/ %fooormore
031a44ed	392	=! qr/[13579]$/ +{0..99}
ea0c2dbd	393	=! qr/a*/ {}
031a44ed	394	= qr/a*/ {b=>2}
ea0c2dbd RGS	395	= qr/B/i {b=>2}
	396	= /B/i {b=>2}
	397	=! qr/a+/ {b=>2}
	398	= qr/^à/ {"à"=>2}
0d863452	399
031a44ed	400	# - a scalar
2e0e16c9	401	"foo" +{foo => 1, bar => 2}
031a44ed	402	"foo" %fooormore
2e0e16c9	403	! "baz" +{foo => 1, bar => 2}
031a44ed RGS	404	! "boz" %fooormore
	405	! 1 +{foo => 1, bar => 2}
	406	! 1 %fooormore
	407	1 { 1 => 3 }
	408	1.0 { 1 => 3 }
	409	! "1.0" { 1 => 3 }
	410	! "1.0" { 1.0 => 3 }
	411	"1.0" { "1.0" => 3 }
	412	"à" { "à" => "À" }
0d863452	413
61a621c6	414	# - undef
2522c35a	415	! undef { hop => 'zouu' }
61a621c6 RGS	416	! undef %hash
61a621c6 RGS	417	! undef +{"" => "empty key"}
2a37c5e7	418	! undef {}
0d863452 RH	419
	420	# ARRAY ref against:
	421	# - another array ref
1cfb7049	422	[] []
2522c35a	423	=! [] [1]
ea0c2dbd RGS	424	[["foo"], ["bar"]] [qr/o/, qr/a/]
ea0c2dbd RGS	425	! [["foo"], ["bar"]] [qr/ARRAY/, qr/ARRAY/]
0d863452	426	["foo", "bar"] [qr/o/, qr/a/]
031a44ed	427	! [qr/o/, qr/a/] ["foo", "bar"]
2522c35a	428	["foo", "bar"] [["foo"], ["bar"]]
71b0fb34	429	! ["foo", "bar"] [qr/o/, "foo"]
2522c35a	430	["foo", undef, "bar"] [qr/o/, undef, "bar"]
fb51372e	431	! ["foo", undef, "bar"] [qr/o/, "", "bar"]
2522c35a	432	! ["foo", "", "bar"] [qr/o/, undef, "bar"]
1cfb7049	433	$deep1 $deep1
031a44ed	434	@$deep1 @$deep1
1cfb7049	435	! $deep1 $deep2
0d863452	436
031a44ed RGS	437	= \@nums \@tied_nums
	438	= @nums \@tied_nums
	439	= \@nums @tied_nums
	440	= @nums @tied_nums
	441
d0b243e3 RGS	442	# - an object
d0b243e3 RGS	443	! $obj @fooormore
41e726ac	444	$obj [sub{ref shift}]
d0b243e3	445
0d863452	446	# - a regex
ea0c2dbd RGS	447	= qr/x/ [qw(foo bar baz quux)]
	448	=! qr/y/ [qw(foo bar baz quux)]
	449	= /x/ [qw(foo bar baz quux)]
	450	=! /y/ [qw(foo bar baz quux)]
	451	= /FOO/i @fooormore
	452	=! /bar/ @fooormore
0d863452 RH	453
0d863452 RH	454	# - a number
015eb7b9	455	2 [qw(1.00 2.00)]
b0138e99 RGS	456	2 [qw(foo 2)]
	457	2.0_0e+0 [qw(foo 2)]
	458	! 2 [qw(1foo bar2)]
0d863452 RH	459
0d863452 RH	460	# - a string
b0138e99 RGS	461	! "2" [qw(1foo 2bar)]
b0138e99 RGS	462	"2bar" [qw(1foo 2bar)]
0d863452	463
015eb7b9 RGS	464	# - undef
	465	undef [1, 2, undef, 4]
	466	! undef [1, 2, [undef], 4]
	467	! undef @fooormore
	468	undef @sparse
fb51372e RGS	469	undef [undef]
	470	! 0 [undef]
	471	! "" [undef]
	472	! undef [0]
	473	! undef [""]
015eb7b9 RGS	474
	475	# - nested arrays and ~~ distributivity
	476	11 [[11]]
	477	! 11 [[12]]
	478	"foo" [{foo => "bar"}]
	479	! "bar" [{foo => "bar"}]
	480
0d863452 RH	481	# Number against number
0d863452 RH	482	2 2
33ed63a2	483	20 2_0
0d863452	484	! 2 3
18d11902 RGS	485	0 FALSE
18d11902 RGS	486	3-2 TRUE
fb51372e RGS	487	! undef 0
fb51372e RGS	488	! (my $u) 0
0d863452 RH	489
0d863452 RH	490	# Number against string
33ed63a2 RGS	491	= 2 "2"
33ed63a2 RGS	492	= 2 "2.0"
0d863452	493	! 2 "2bananas"
289d21b2	494	!= 2_3 "2_3" NOWARNINGS
18d11902	495	FALSE "0"
fb51372e RGS	496	! undef "0"
fb51372e RGS	497	! undef ""
0d863452 RH	498
0d863452 RH	499	# Regex against string
a566f585 RGS	500	"x" qr/x/
a566f585 RGS	501	! "x" qr/y/
0d863452 RH	502
	503	# Regex against number
	504	12345 qr/3/
2522c35a	505	! 12345 qr/7/
0d863452	506
031a44ed	507	# array/hash against string
d444f7e3 RGS	508	@fooormore "".\@fooormore
	509	! @keyandmore "".\@fooormore
	510	%fooormore "".\%fooormore
	511	! %keyandmore "".\%fooormore
f1bef09e	512
0d863452	513	# Test the implicit referencing
b0138e99	514	7 @nums
0d863452 RH	515	@nums \@nums
	516	! @nums \\@nums
	517	@nums [1..10]
	518	! @nums [0..9]
	519
2e0e16c9 RGS	520	"foo" %hash
	521	/bar/ %hash
	522	[qw(bar)] %hash
	523	! [qw(a b c)] %hash
71b0fb34	524	%hash %hash
fceebc47	525	%hash +{%hash}
73aec0b1	526	%hash \%hash
71b0fb34 DK	527	%hash %tied_hash
	528	%tied_hash %tied_hash
	529	%hash { foo => 5, bar => 10 }
	530	! %hash { foo => 5, bar => 10, quux => 15 }
	531
	532	@nums { 1, '', 2, '' }
	533	@nums { 1, '', 12, '' }
	534	! @nums { 11, '', 12, '' }
be99ef1a	535
329a333e DL	536	# array slices
	537	@nums[0..-1] []
	538	@nums[0..0] [1]
	539	! @nums[0..1] [0..2]
	540	@nums[0..4] [1..5]
	541
	542	! undef @nums[0..-1]
	543	1 @nums[0..0]
	544	2 @nums[0..1]
	545	! @nums[0..1] 2
	546
	547	@nums[0..1] @nums[0..1]
	548
	549	# hash slices
	550	@keyandmore{qw(not)} [undef]
	551	@keyandmore{qw(key)} [0]
	552
	553	undef @keyandmore{qw(not)}
	554	0 @keyandmore{qw(key and more)}
	555	! 2 @keyandmore{qw(key and)}
	556
	557	@fooormore{qw(foo)} @keyandmore{qw(key)}
	558	@fooormore{qw(foo or more)} @keyandmore{qw(key and more)}
	559
be99ef1a YK	560	# UNDEF
	561	! 3 undef
	562	! 1 undef
	563	! [] undef
	564	! {} undef
	565	! \%::main undef
	566	! [1,2] undef
	567	! %hash undef
	568	! @nums undef
	569	! "foo" undef
	570	! "" undef
	571	! !1 undef
	572	! \&foo undef
	573	! sub { } undef