3 # Checks if the parser behaves correctly in edge cases
4 # (including weird syntax errors)
15 like( $@, qr/^Can't modify hash dereference in repeat \(x\)/, '%@x=0' );
18 eval q{{s//${}/; //}};
19 like( $@, qr/syntax error/, 'syntax error, used to dump core' );
23 like( $@, qr/^Missing right brace on \\x/,
24 'syntax error in string, used to dump core' );
27 like( $@, qr/^Missing right brace on \\N/,
28 'syntax error in string with incomplete \N' );
30 like( $@, qr/^Missing braces on \\N/,
31 'syntax error in string with incomplete \N' );
33 eval "a.b.c.d.e.f;sub";
34 like( $@, qr/^Illegal declaration of anonymous subroutine/,
35 'found by Markov chain stress testing' );
38 eval '($a, b) = (1, 2);';
39 like( $@, qr/^Can't modify constant item in list assignment/,
40 'bareword in list assignment' );
42 eval 'tie FOO, "Foo";';
43 like( $@, qr/^Can't modify constant item in tie /,
44 'tying a bareword causes a segfault in 5.6.1' );
47 like( $@, qr/^Can't modify constant item in undef operator /,
48 'undefing constant causes a segfault in 5.6.1 [ID 20010906.019]' );
50 eval 'read($bla, FILE, 1);';
51 like( $@, qr/^Can't modify constant item in read /,
52 'read($var, FILE, 1) segfaults on 5.6.1 [ID 20011025.054]' );
54 # This used to dump core (bug #17920)
55 eval q{ sub { sub { f1(f2();); my($a,$b,$c) } } };
56 like( $@, qr/error/, 'lexical block discarded by yacc' );
58 # bug #18573, used to corrupt memory
60 like( $@, qr/^Missing control char name in \\c/, q("\c" string) );
63 like( $@, qr/Final \$ should be \\\$ or \$name/, q($ at end of "" string) );
65 # two tests for memory corruption problems in the said variables
66 # (used to dump core or produce strange results)
68 is( "\Q\Q\Q\Q\Q\Q\Q\Q\Q\Q\Q\Q\Qa", "a", "PL_lex_casestack" );
71 {{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{
72 {{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{
73 {{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{
74 }}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}
75 }}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}
76 }}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}
78 is( $@, '', 'PL_lex_brackstack' );
81 # tests for bug #20716
85 is("${a}{", "A{", "interpolation, qq//");
86 is("${a}[", "A[", "interpolation, qq//");
88 is("@{b}{", "B{", "interpolation, qq//");
89 is(qr/${a}{/, '(?-xism:A{)', "interpolation, qr//");
92 is($&, 'A{', "interpolation, m//");
94 is($c, 'foo', "interpolation, s/...//");
96 is($c, 'A{', "interpolation, s//.../");
97 is(<<"${a}{", "A{ A[ B{\n", "interpolation, here doc");
102 eval q{ sub a(;; &) { } a { } };
103 is($@, '', "';&' sub prototype confuses the lexer");
106 # ensure that the second print statement works, by playing a bit
107 # with the test output.
108 my %data = ( foo => "\n" );
115 # { q.* => ... } should be interpreted as hash, not block
117 foreach my $line (split /\n/, <<'EOF')
125 1 { q=bar= => 'bar' }
128 my ($expect, $eval) = split / /, $line, 2;
129 my $result = eval $eval;
130 ok($@ eq '', "eval $eval");
131 is(ref $result, $expect ? 'HASH' : '', $eval);
136 local $SIG{__WARN__} = sub { }; # silence mandatory warning
137 eval q{ my $x = -F 1; };
138 like( $@, qr/(?:syntax|parse) error .* near "F 1"/, "unknown filetest operators" );
140 eval q{ sub F { 42 } -F 1 },
142 '-F calls the F function'
148 eval q{ *foo{CODE} ? 1 : 0 };
149 is( $@, '', "glob subscript in conditional" );
154 eval q{ sub f { @a=@b=@c; {use} } };
155 like( $@, qr/syntax error/, "use without body" );
160 # this used to segfault (because $[=1 is optimized away to a null block)
164 $[ = 0; # restore the original value for less side-effects
167 # [perl #2738] perl segfautls on input
169 eval q{ sub _ <> {} };
170 like($@, qr/Illegal declaration of subroutine main::_/, "readline operator as prototype");
172 eval q{ $s = sub <> {} };
173 like($@, qr/Illegal declaration of anonymous subroutine/, "readline operator as prototype");
175 eval q{ sub _ __FILE__ {} };
176 like($@, qr/Illegal declaration of subroutine main::_/, "__FILE__ as prototype");
179 # [perl #36313] perl -e "1for$[=0" crash
183 pass('optimized assignment to $[ used to segfault in list context');
184 if ($[ = 0) { $x = 1 }
185 pass('optimized assignment to $[ used to segfault in scalar context');
187 is($x, 2, 'scalar assignment to $[ behaves like other variables');
189 is($x, 1, 'list assignment to $[ behaves like other variables');
190 $x = eval q{ ($[, $x) = (0) };
191 like($@, qr/That use of \$\[ is unsupported/,
192 'cannot assign to $[ in a list');
193 eval q{ ($[) = (0, 1) };
194 like($@, qr/That use of \$\[ is unsupported/,
195 'cannot assign list of >1 elements to $[');
197 like($@, qr/That use of \$\[ is unsupported/,
198 'cannot assign list of <1 elements to $[');
201 # tests for "Bad name"
203 like( $@, qr/Bad name after foo::/, 'Bad name after foo::' );
205 like( $@, qr/Bad name after foo'/, 'Bad name after foo\'' );