#!./perl
# Checks if the parser behaves correctly in edge cases
# (including weird syntax errors)
print "1..154\n";
sub failed {
my ($got, $expected, $name) = @_;
print "not ok $test - $name\n";
my @caller = caller(1);
print "# Failed test at $caller[1] line $caller[2]\n";
if (defined $got) {
print "# Got '$got'\n";
} else {
print "# Got undef\n";
}
print "# Expected $expected\n";
return;
}
sub like {
my ($got, $pattern, $name) = @_;
$test = $test + 1;
if (defined $got && $got =~ $pattern) {
print "ok $test - $name\n";
# Principle of least surprise - maintain the expected interface, even
# though we aren't using it here (yet).
return 1;
}
failed($got, $pattern, $name);
}
sub is {
my ($got, $expect, $name) = @_;
$test = $test + 1;
if (defined $expect) {
if (defined $got && $got eq $expect) {
print "ok $test - $name\n";
return 1;
}
failed($got, "'$expect'", $name);
} else {
if (!defined $got) {
print "ok $test - $name\n";
return 1;
}
failed($got, 'undef', $name);
}
}
eval '%@x=0;';
like( $@, qr/^Can't modify hash dereference in repeat \(x\)/, '%@x=0' );
# Bug 20010422.005
eval q{{s//${}/; //}};
like( $@, qr/syntax error/, 'syntax error, used to dump core' );
# Bug 20010528.007
eval q/"\x{"/;
like( $@, qr/^Missing right brace on \\x/,
'syntax error in string, used to dump core' );
eval q/"\N{"/;
like( $@, qr/^Missing right brace on \\N/,
'syntax error in string with incomplete \N' );
eval q/"\Nfoo"/;
like( $@, qr/^Missing braces on \\N/,
'syntax error in string with incomplete \N' );
eval q/"\o{"/;
like( $@, qr/^Missing right brace on \\o/,
'syntax error in string with incomplete \o' );
eval q/"\ofoo"/;
like( $@, qr/^Missing braces on \\o/,
'syntax error in string with incomplete \o' );
eval "a.b.c.d.e.f;sub";
like( $@, qr/^Illegal declaration of anonymous subroutine/,
'found by Markov chain stress testing' );
# Bug 20010831.001
eval '($a, b) = (1, 2);';
like( $@, qr/^Can't modify constant item in list assignment/,
'bareword in list assignment' );
eval 'tie FOO, "Foo";';
like( $@, qr/^Can't modify constant item in tie /,
'tying a bareword causes a segfault in 5.6.1' );
eval 'undef foo';
like( $@, qr/^Can't modify constant item in undef operator /,
'undefing constant causes a segfault in 5.6.1 [ID 20010906.019]' );
eval 'read($bla, FILE, 1);';
like( $@, qr/^Can't modify constant item in read /,
'read($var, FILE, 1) segfaults on 5.6.1 [ID 20011025.054]' );
# This used to dump core (bug #17920)
eval q{ sub { sub { f1(f2();); my($a,$b,$c) } } };
like( $@, qr/error/, 'lexical block discarded by yacc' );
# bug #18573, used to corrupt memory
eval q{ "\c" };
like( $@, qr/^Missing control char name in \\c/, q("\c" string) );
eval q{ qq(foo$) };
like( $@, qr/Final \$ should be \\\$ or \$name/, q($ at end of "" string) );
# two tests for memory corruption problems in the said variables
# (used to dump core or produce strange results)
is( "\Q\Q\Q\Q\Q\Q\Q\Q\Q\Q\Q\Q\Qa", "a", "PL_lex_casestack" );
eval {
{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{
{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{
{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{
}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}
}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}
}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}
};
is( $@, '', 'PL_lex_brackstack' );
{
# tests for bug #20716
undef $a;
undef @b;
my $a="A";
is("${a}{", "A{", "interpolation, qq//");
is("${a}[", "A[", "interpolation, qq//");
my @b=("B");
is("@{b}{", "B{", "interpolation, qq//");
is(qr/${a}\{/, '(?^:A\{)', "interpolation, qr//");
my $c = "A{";
$c =~ /${a}\{/;
is($&, 'A{', "interpolation, m//");
$c =~ s/${a}\{/foo/;
is($c, 'foo', "interpolation, s/...//");
$c =~ s/foo/${a}{/;
is($c, 'A{', "interpolation, s//.../");
is(<<"${a}{", "A{ A[ B{\n", "interpolation, here doc");
${a}{ ${a}[ @{b}{
${a}{
}
eval q{ sub a(;; &) { } a { } };
is($@, '', "';&' sub prototype confuses the lexer");
# Bug #21575
# ensure that the second print statement works, by playing a bit
# with the test output.
my %data = ( foo => "\n" );
print "#";
print(
$data{foo});
$test = $test + 1;
print "ok $test\n";
# Bug #21875
# { q.* => ... } should be interpreted as hash, not block
foreach my $line (split /\n/, <<'EOF')
1 { foo => 'bar' }
1 { qoo => 'bar' }
1 { q => 'bar' }
1 { qq => 'bar' }
0 { q,'bar', }
0 { q=bar= }
0 { qq=bar= }
1 { q=bar= => 'bar' }
EOF
{
my ($expect, $eval) = split / /, $line, 2;
my $result = eval $eval;
is($@, '', "eval $eval");
is(ref $result, $expect ? 'HASH' : '', $eval);
}
# Bug #24212
{
local $SIG{__WARN__} = sub { }; # silence mandatory warning
eval q{ my $x = -F 1; };
like( $@, qr/(?i:syntax|parse) error .* near "F 1"/, "unknown filetest operators" );
is(
eval q{ sub F { 42 } -F 1 },
'-42',
'-F calls the F function'
);
}
# Bug #24762
{
eval q{ *foo{CODE} ? 1 : 0 };
is( $@, '', "glob subscript in conditional" );
}
# Bug #25824
{
eval q{ sub f { @a=@b=@c; {use} } };
like( $@, qr/syntax error/, "use without body" );
}
# [perl #2738] perl segfautls on input
{
eval q{ sub _ <> {} };
like($@, qr/Illegal declaration of subroutine main::_/, "readline operator as prototype");
eval q{ $s = sub <> {} };
like($@, qr/Illegal declaration of anonymous subroutine/, "readline operator as prototype");
eval q{ sub _ __FILE__ {} };
like($@, qr/Illegal declaration of subroutine main::_/, "__FILE__ as prototype");
}
# tests for "Bad name"
eval q{ foo::$bar };
like( $@, qr/Bad name after foo::/, 'Bad name after foo::' );
eval q{ foo''bar };
like( $@, qr/Bad name after foo'/, 'Bad name after foo\'' );
# test for ?: context error
eval q{($a ? $x : ($y)) = 5};
like( $@, qr/Assignment to both a list and a scalar/, 'Assignment to both a list and a scalar' );
eval q{ s/x/#/e };
is( $@, '', 'comments in s///e' );
# these five used to coredump because the op cleanup on parse error could
# be to the wrong pad
eval q[
sub { our $a= 1;$a;$a;$a;$a;$a;$a;$a;$a;$a;$a;$a;$a;$a;$a;$a;$a;$a;$a;$a;
sub { my $z
];
like($@, qr/Missing right curly/, 'nested sub syntax error' );
eval q[
sub { my ($a,$b,$c,$d,$e,$f,$g,$h,$i,$j,$k,$l,$m,$n,$o,$p,$q,$r,$s,$r);
sub { my $z
];
like($@, qr/Missing right curly/, 'nested sub syntax error 2' );
eval q[
sub { our $a= 1;$a;$a;$a;$a;$a;$a;$a;$a;$a;$a;$a;$a;$a;$a;$a;$a;$a;$a;$a;
use DieDieDie;
];
like($@, qr/Can't locate DieDieDie.pm/, 'croak cleanup' );
eval q[
sub { my ($a,$b,$c,$d,$e,$f,$g,$h,$i,$j,$k,$l,$m,$n,$o,$p,$q,$r,$s,$r);
use DieDieDie;
];
like($@, qr/Can't locate DieDieDie.pm/, 'croak cleanup 2' );
eval q[
my @a;
my ($a,$b,$c,$d,$e,$f,$g,$h,$i,$j,$k,$l,$m,$n,$o,$p,$q,$r,$s,$r);
@a =~ s/a/b/; # compile-time error
use DieDieDie;
];
like($@, qr/Can't modify/, 'croak cleanup 3' );
# these might leak, or have duplicate frees, depending on the bugginess of
# the parser stack 'fail in reduce' cleanup code. They're here mainly as
# something to be run under valgrind, with PERL_DESTRUCT_LEVEL=1.
eval q[ BEGIN { } ] for 1..10;
is($@, "", 'BEGIN 1' );
eval q[ BEGIN { my $x; $x = 1 } ] for 1..10;
is($@, "", 'BEGIN 2' );
eval q[ BEGIN { \&foo1 } ] for 1..10;
is($@, "", 'BEGIN 3' );
eval q[ sub foo2 { } ] for 1..10;
is($@, "", 'BEGIN 4' );
eval q[ sub foo3 { my $x; $x=1 } ] for 1..10;
is($@, "", 'BEGIN 5' );
eval q[ BEGIN { die } ] for 1..10;
like($@, qr/BEGIN failed--compilation aborted/, 'BEGIN 6' );
eval q[ BEGIN {\&foo4; die } ] for 1..10;
like($@, qr/BEGIN failed--compilation aborted/, 'BEGIN 7' );
{
# RT #70934
# check both the specific case in the ticket, and a few other paths into
# S_scan_ident()
# simplify long ids
my $x100 = "x" x 256;
my $xFE = "x" x 254;
my $xFD = "x" x 253;
my $xFC = "x" x 252;
my $xFB = "x" x 251;
eval qq[ \$#$xFB ];
is($@, "", "251 character \$# sigil ident ok");
eval qq[ \$#$xFC ];
like($@, qr/Identifier too long/, "too long id in \$# sigil ctx");
eval qq[ \$$xFB ];
is($@, "", "251 character \$ sigil ident ok");
eval qq[ \$$xFC ];
like($@, qr/Identifier too long/, "too long id in \$ sigil ctx");
eval qq[ %$xFB ];
is($@, "", "251 character % sigil ident ok");
eval qq[ %$xFC ];
like($@, qr/Identifier too long/, "too long id in % sigil ctx");
eval qq[ \\&$xFB ]; # take a ref since I don't want to call it
is($@, "", "251 character & sigil ident ok");
eval qq[ \\&$xFC ];
like($@, qr/Identifier too long/, "too long id in & sigil ctx");
eval qq[ *$xFC ];
is($@, "", "252 character glob ident ok");
eval qq[ *$xFD ];
like($@, qr/Identifier too long/, "too long id in glob ctx");
eval qq[ for $xFD ];
like($@, qr/Missing \$ on loop variable/,
"253 char id ok, but a different error");
eval qq[ for $xFE; ];
like($@, qr/Identifier too long/, "too long id in for ctx");
# the specific case from the ticket
my $x = "x" x 257;
eval qq[ for $x ];
like($@, qr/Identifier too long/, "too long id ticket case");
}
{
is(exists &zlonk, '', 'sub not present');
eval qq[ {sub zlonk} ];
is($@, '', 'sub declaration followed by a closing curly');
is(exists &zlonk, 1, 'sub now stubbed');
is(defined &zlonk, '', 'but no body defined');
}
# [perl #113016] CORE::print::foo
sub CORE'print'foo { 43 } # apostrophes intentional; do not tempt fate
sub CORE'foo'bar { 43 }
is CORE::print::foo, 43, 'CORE::print::foo is not CORE::print ::foo';
is scalar eval "CORE::foo'bar", 43, "CORE::foo'bar is not an error";
# bug #71748
eval q{
$_ = "";
s/(.)/
{
#
}->{$1};
/e;
1;
};
is($@, "", "multiline whitespace inside substitute expression");
eval '@A =~ s/a/b/; # compilation error
sub tahi {}
sub rua;
sub toru ($);
sub wha :lvalue;
sub rima ($%&*$&*\$%\*&$%*&) :method;
sub ono :lvalue { die }
sub whitu (_) { die }
sub waru ($;) :method { die }
sub iwa { die }
BEGIN { }';
is $::{tahi}, undef, 'empty sub decl ignored after compilation error';
is $::{rua}, undef, 'stub decl ignored after compilation error';
is $::{toru}, undef, 'stub+proto decl ignored after compilation error';
is $::{wha}, undef, 'stub+attr decl ignored after compilation error';
is $::{rima}, undef, 'stub+proto+attr ignored after compilation error';
is $::{ono}, undef, 'sub decl with attr ignored after compilation error';
is $::{whitu}, undef, 'sub decl w proto ignored after compilation error';
is $::{waru}, undef, 'sub w attr+proto ignored after compilation error';
is $::{iwa}, undef, 'non-empty sub decl ignored after compilation error';
is *BEGIN{CODE}, undef, 'BEGIN leaves no stub after compilation error';
$test = $test + 1;
"ok $test - format inside re-eval" =~ /(?{
format =
@<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
$_
.
write
}).*/;
eval '
"${;
=pod
=cut
}";
';
is $@, "", 'pod inside string in string eval';
"${;
=pod
=cut
}";
print "ok ", ++$test, " - pod inside string outside of string eval\n";
like "blah blah blah\n", qr/${\ <<END
blah blah blah
END
}/, 'here docs in multiline quoted construct';
like "blah blah blah\n", eval q|qr/${\ <<END
blah blah blah
END
}/|, 'here docs in multiline quoted construct in string eval';
# Unterminated here-docs in subst in eval; used to crash
eval 's/${<<END}//';
eval 's//${<<END}/';
print "ok ", ++$test, " - unterminated here-docs in s/// in string eval\n";
sub 'Hello'_he_said (_);
is prototype "Hello::_he_said", '_', 'initial tick in sub declaration';
{
my @x = 'string';
is(eval q{ "$x[0]->strung" }, 'string->strung',
'literal -> after an array subscript within ""');
@x = ['string'];
# this used to give "string"
like("$x[0]-> [0]", qr/^ARRAY\([^)]*\)-> \[0]\z/,
'literal -> [0] after an array subscript within ""');
}
eval 'no if $] >= 5.17.4 warnings => "deprecated"';
is 1,1, ' no crash for "no ... syntax error"';
for my $pkg(()){}
$pkg = 3;
is $pkg, 3, '[perl #114942] for my $foo()){} $foo';
# Add new tests HERE (above this line)
# bug #74022: Loop on characters in \p{OtherIDContinue}
# This test hangs if it fails.
eval chr 0x387;
is(1,1, '[perl #74022] Parser looping on OtherIDContinue chars');
# More awkward tests for #line. Keep these at the end, as they will screw
# with sane line reporting for any other test failures
sub check ($$$) {
my ($file, $line, $name) = @_;
my (undef, $got_file, $got_line) = caller;
like ($got_file, $file, "file of $name");
is ($got_line, $line, "line of $name");
}
my $this_file = qr/parser\.t(?:\.[bl]eb?)?$/;
#line 3
check($this_file, 3, "bare line");
# line 5
check($this_file, 5, "bare line with leading space");
#line 7
check($this_file, 7, "trailing space still valid");
# line 11
check($this_file, 11, "leading and trailing");
# line 13
check($this_file, 13, "leading tab");
#line 17
check($this_file, 17, "middle tab");
#line 19
check($this_file, 19, "loadsaspaces");
#line 23 KASHPRITZA
check(qr/^KASHPRITZA$/, 23, "bare filename");
#line 29 "KAHEEEE"
check(qr/^KAHEEEE$/, 29, "filename in quotes");
#line 31 "CLINK CLOINK BZZT"
check(qr/^CLINK CLOINK BZZT$/, 31, "filename with spaces in quotes");
#line 37 "THOOM THOOM"
check(qr/^THOOM THOOM$/, 37, "filename with tabs in quotes");
#line 41 "GLINK PLINK GLUNK DINK"
check(qr/^GLINK PLINK GLUNK DINK$/, 41, "a space after the quotes");
#line 43 "BBFRPRAFPGHPP
check(qr/^"BBFRPRAFPGHPP$/, 43, "actually missing a quote is still valid");
#line 47 bang eth
check(qr/^"BBFRPRAFPGHPP$/, 46, "but spaces aren't allowed without quotes");
#line 77sevenseven
check(qr/^"BBFRPRAFPGHPP$/, 49, "need a space after the line number");
eval <<'EOSTANZA'; die $@ if $@;
#line 51 "With wonderful deathless ditties|We build up the world's great cities,|And out of a fabulous story|We fashion an empire's glory:|One man with a dream, at pleasure,|Shall go forth and conquer a crown;|And three with a new song's measure|Can trample a kingdom down."
check(qr/^With.*down\.$/, 51, "Overflow the second small buffer check");
EOSTANZA
# And now, turn on the debugger flag for long names
$^P = 0x100;
#line 53 "For we are afar with the dawning|And the suns that are not yet high,|And out of the infinite morning|Intrepid you hear us cry-|How, spite of your human scorning,|Once more God's future draws nigh,|And already goes forth the warning|That ye of the past must die."
check(qr/^For we.*must die\.$/, 53, "Our long line is set up");
eval <<'EOT'; die $@ if $@;
#line 59 " "
check(qr/^ $/, 59, "Overflow the first small buffer check only");
EOT
eval <<'EOSTANZA'; die $@ if $@;
#line 61 "Great hail! we cry to the comers|From the dazzling unknown shore;|Bring us hither your sun and your summers;|And renew our world as of yore;|You shall teach us your song's new numbers,|And things that we dreamed not before:|Yea, in spite of a dreamer who slumbers,|And a singer who sings no more."
check(qr/^Great hail!.*no more\.$/, 61, "Overflow both small buffer checks");
EOSTANZA
#line 531 parser.t
<<EOU; check('parser\.t', 531, 'on same line as heredoc');
EOU
s//<<EOV/e if 0;
EOV
check('parser\.t', 535, 'after here-doc in quotes');
<<EOW;
${check('parser\.t', 537, 'first line of interp in here-doc');;
check('parser\.t', 538, 'second line of interp in here-doc');}
EOW
__END__
# Don't add new tests HERE. See note above