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1 | #!./perl |
2 | |
3 | # Checks if the parser behaves correctly in edge cases |
4 | # (including weird syntax errors) |
5 | |
6 | BEGIN { |
7 | chdir 't' if -d 't'; |
8 | @INC = '../lib'; |
9 | } |
10 | |
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11 | require "./test.pl"; |
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12 | plan( tests => 39 ); |
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13 | |
14 | eval '%@x=0;'; |
15 | like( $@, qr/^Can't modify hash dereference in repeat \(x\)/, '%@x=0' ); |
16 | |
17 | # Bug 20010422.005 |
18 | eval q{{s//${}/; //}}; |
19 | like( $@, qr/syntax error/, 'syntax error, used to dump core' ); |
20 | |
21 | # Bug 20010528.007 |
22 | eval q/"\x{"/; |
23 | like( $@, qr/^Missing right brace on \\x/, |
24 | 'syntax error in string, used to dump core' ); |
25 | |
26 | eval "a.b.c.d.e.f;sub"; |
27 | like( $@, qr/^Illegal declaration of anonymous subroutine/, |
28 | 'found by Markov chain stress testing' ); |
29 | |
30 | # Bug 20010831.001 |
31 | eval '($a, b) = (1, 2);'; |
32 | like( $@, qr/^Can't modify constant item in list assignment/, |
33 | 'bareword in list assignment' ); |
34 | |
35 | eval 'tie FOO, "Foo";'; |
36 | like( $@, qr/^Can't modify constant item in tie /, |
37 | 'tying a bareword causes a segfault in 5.6.1' ); |
38 | |
39 | eval 'undef foo'; |
40 | like( $@, qr/^Can't modify constant item in undef operator /, |
41 | 'undefing constant causes a segfault in 5.6.1 [ID 20010906.019]' ); |
42 | |
43 | eval 'read($bla, FILE, 1);'; |
44 | like( $@, qr/^Can't modify constant item in read /, |
45 | 'read($var, FILE, 1) segfaults on 5.6.1 [ID 20011025.054]' ); |
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46 | |
47 | # This used to dump core (bug #17920) |
48 | eval q{ sub { sub { f1(f2();); my($a,$b,$c) } } }; |
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49 | like( $@, qr/error/, 'lexical block discarded by yacc' ); |
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50 | |
51 | # bug #18573, used to corrupt memory |
52 | eval q{ "\c" }; |
53 | like( $@, qr/^Missing control char name in \\c/, q("\c" string) ); |
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54 | |
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55 | eval q{ qq(foo$) }; |
56 | like( $@, qr/Final \$ should be \\\$ or \$name/, q($ at end of "" string) ); |
57 | |
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58 | # two tests for memory corruption problems in the said variables |
59 | # (used to dump core or produce strange results) |
60 | |
61 | is( "\Q\Q\Q\Q\Q\Q\Q\Q\Q\Q\Q\Q\Qa", "a", "PL_lex_casestack" ); |
62 | |
63 | eval { |
64 | {{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{ |
65 | {{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{ |
66 | {{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{ |
67 | }}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}} |
68 | }}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}} |
69 | }}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}} |
70 | }; |
71 | is( $@, '', 'PL_lex_brackstack' ); |
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72 | |
73 | { |
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74 | # tests for bug #20716 |
75 | undef $a; |
76 | undef @b; |
77 | my $a="A"; |
78 | is("${a}{", "A{", "interpolation, qq//"); |
79 | is("${a}[", "A[", "interpolation, qq//"); |
80 | my @b=("B"); |
81 | is("@{b}{", "B{", "interpolation, qq//"); |
82 | is(qr/${a}{/, '(?-xism:A{)', "interpolation, qr//"); |
83 | my $c = "A{"; |
84 | $c =~ /${a}{/; |
85 | is($&, 'A{', "interpolation, m//"); |
86 | $c =~ s/${a}{/foo/; |
87 | is($c, 'foo', "interpolation, s/...//"); |
88 | $c =~ s/foo/${a}{/; |
89 | is($c, 'A{', "interpolation, s//.../"); |
90 | is(<<"${a}{", "A{ A[ B{\n", "interpolation, here doc"); |
91 | ${a}{ ${a}[ @{b}{ |
92 | ${a}{ |
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93 | } |
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94 | |
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95 | eval q{ sub a(;; &) { } a { } }; |
96 | is($@, '', "';&' sub prototype confuses the lexer"); |
97 | |
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98 | # Bug #21575 |
99 | # ensure that the second print statement works, by playing a bit |
100 | # with the test output. |
101 | my %data = ( foo => "\n" ); |
102 | print "#"; |
103 | print( |
104 | $data{foo}); |
105 | pass(); |
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106 | |
107 | # Bug #21875 |
108 | # { q.* => ... } should be interpreted as hash, not block |
109 | |
110 | foreach my $line (split /\n/, <<'EOF') |
111 | 1 { foo => 'bar' } |
112 | 1 { qoo => 'bar' } |
113 | 1 { q => 'bar' } |
114 | 1 { qq => 'bar' } |
115 | 0 { q,'bar', } |
116 | 0 { q=bar= } |
117 | 0 { qq=bar= } |
118 | 1 { q=bar= => 'bar' } |
119 | EOF |
120 | { |
121 | my ($expect, $eval) = split / /, $line, 2; |
122 | my $result = eval $eval; |
123 | ok($@ eq '', "eval $eval"); |
124 | is(ref $result, $expect ? 'HASH' : '', $eval); |
125 | } |