#!./perl
# Checks if the parser behaves correctly in edge cases
# (including weird syntax errors)
BEGIN {
chdir 't' if -d 't';
@INC = '../lib';
}
BEGIN { require "./test.pl"; }
plan( tests => 110 );
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 "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}{/, '(?-xism: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});
pass();
# 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 $eval;
ok($@ eq '', "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" );
}
# Bug #27024
{
# this used to segfault (because $[=1 is optimized away to a null block)
my $x;
$[ = 1 while $x;
pass();
$[ = 0; # restore the original value for less side-effects
}
# [perl #2738] perl segfautls on input
{
eval q{ sub _ <> {} };
like($@, 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($@, qr/Illegal declaration of subroutine main::_/, "__FILE__ as prototype");
}
# [perl #36313] perl -e "1for$[=0" crash
{
my $x;
$x = 1 for ($[) = 0;
pass('optimized assignment to $[ used to segfault in list context');
if ($[ = 0) { $x = 1 }
pass('optimized assignment to $[ used to segfault in scalar context');
$x = ($[=2.4);
is($x, 2, 'scalar assignment to $[ behaves like other variables');
$x = (($[) = 0);
is($x, 1, 'list assignment to $[ behaves like other variables');
$x = eval q{ ($[, $x) = (0) };
like($@, qr/That use of \$\[ is unsupported/,
'cannot assign to $[ in a list');
eval q{ ($[) = (0, 1) };
like($@, qr/That use of \$\[ is unsupported/,
'cannot assign list of >1 elements to $[');
eval q{ ($[) = () };
like($@, qr/That use of \$\[ is unsupported/,
'cannot assign list of <1 elements to $[');
}
# tests for "Bad name"
eval q{ foo::$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' );
# Add new tests HERE:
# 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 $name");
}
#line 3
check(qr/parser\.t$/, 3, "bare line");
# line 5
check(qr/parser\.t$/, 5, "bare line with leading space");
#line 7
check(qr/parser\.t$/, 7, "trailing space still valid");
# line 11
check(qr/parser\.t$/, 11, "leading and trailing");
# line 13
check(qr/parser\.t$/, 13, "leading tab");
#line 17
check(qr/parser\.t$/, 17, "middle tab");
#line 19
check(qr/parser\.t$/, 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");
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
{
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 ""');
}
__END__
# Don't add new tests HERE. See note above