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923be969 |
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 => 59 ); |
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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 | |
fd7808cb |
26 | eval q/"\N{"/; |
27 | like( $@, qr/^Missing right brace on \\N/, |
28 | 'syntax error in string with incomplete \N' ); |
29 | eval q/"\Nfoo"/; |
30 | like( $@, qr/^Missing braces on \\N/, |
31 | 'syntax error in string with incomplete \N' ); |
32 | |
f15b33d3 |
33 | eval "a.b.c.d.e.f;sub"; |
34 | like( $@, qr/^Illegal declaration of anonymous subroutine/, |
35 | 'found by Markov chain stress testing' ); |
36 | |
37 | # Bug 20010831.001 |
38 | eval '($a, b) = (1, 2);'; |
39 | like( $@, qr/^Can't modify constant item in list assignment/, |
40 | 'bareword in list assignment' ); |
41 | |
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' ); |
45 | |
46 | eval 'undef foo'; |
47 | like( $@, qr/^Can't modify constant item in undef operator /, |
48 | 'undefing constant causes a segfault in 5.6.1 [ID 20010906.019]' ); |
49 | |
50 | eval 'read($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]' ); |
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53 | |
54 | # This used to dump core (bug #17920) |
55 | eval q{ sub { sub { f1(f2();); my($a,$b,$c) } } }; |
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56 | like( $@, qr/error/, 'lexical block discarded by yacc' ); |
961ce445 |
57 | |
58 | # bug #18573, used to corrupt memory |
59 | eval q{ "\c" }; |
60 | like( $@, qr/^Missing control char name in \\c/, q("\c" string) ); |
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61 | |
a40a317b |
62 | eval q{ qq(foo$) }; |
63 | like( $@, qr/Final \$ should be \\\$ or \$name/, q($ at end of "" string) ); |
64 | |
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65 | # two tests for memory corruption problems in the said variables |
66 | # (used to dump core or produce strange results) |
67 | |
68 | is( "\Q\Q\Q\Q\Q\Q\Q\Q\Q\Q\Q\Q\Qa", "a", "PL_lex_casestack" ); |
69 | |
70 | eval { |
71 | {{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{ |
72 | {{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{ |
73 | {{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{ |
74 | }}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}} |
75 | }}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}} |
76 | }}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}} |
77 | }; |
78 | is( $@, '', 'PL_lex_brackstack' ); |
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79 | |
80 | { |
7df0d042 |
81 | # tests for bug #20716 |
82 | undef $a; |
83 | undef @b; |
84 | my $a="A"; |
85 | is("${a}{", "A{", "interpolation, qq//"); |
86 | is("${a}[", "A[", "interpolation, qq//"); |
87 | my @b=("B"); |
88 | is("@{b}{", "B{", "interpolation, qq//"); |
89 | is(qr/${a}{/, '(?-xism:A{)', "interpolation, qr//"); |
90 | my $c = "A{"; |
91 | $c =~ /${a}{/; |
92 | is($&, 'A{', "interpolation, m//"); |
93 | $c =~ s/${a}{/foo/; |
94 | is($c, 'foo', "interpolation, s/...//"); |
95 | $c =~ s/foo/${a}{/; |
96 | is($c, 'A{', "interpolation, s//.../"); |
97 | is(<<"${a}{", "A{ A[ B{\n", "interpolation, here doc"); |
98 | ${a}{ ${a}[ @{b}{ |
99 | ${a}{ |
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100 | } |
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101 | |
0f5d0394 |
102 | eval q{ sub a(;; &) { } a { } }; |
103 | is($@, '', "';&' sub prototype confuses the lexer"); |
104 | |
4a202259 |
105 | # Bug #21575 |
106 | # ensure that the second print statement works, by playing a bit |
107 | # with the test output. |
108 | my %data = ( foo => "\n" ); |
109 | print "#"; |
110 | print( |
111 | $data{foo}); |
112 | pass(); |
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113 | |
114 | # Bug #21875 |
115 | # { q.* => ... } should be interpreted as hash, not block |
116 | |
117 | foreach my $line (split /\n/, <<'EOF') |
118 | 1 { foo => 'bar' } |
119 | 1 { qoo => 'bar' } |
120 | 1 { q => 'bar' } |
121 | 1 { qq => 'bar' } |
122 | 0 { q,'bar', } |
123 | 0 { q=bar= } |
124 | 0 { qq=bar= } |
125 | 1 { q=bar= => 'bar' } |
126 | EOF |
127 | { |
128 | my ($expect, $eval) = split / /, $line, 2; |
129 | my $result = eval $eval; |
130 | ok($@ eq '', "eval $eval"); |
131 | is(ref $result, $expect ? 'HASH' : '', $eval); |
132 | } |
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133 | |
134 | # Bug #24212 |
135 | { |
136 | local $SIG{__WARN__} = sub { }; # silence mandatory warning |
137 | eval q{ my $x = -F 1; }; |
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138 | like( $@, qr/(?:syntax|parse) error .* near "F 1"/, "unknown filetest operators" ); |
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139 | is( |
140 | eval q{ sub F { 42 } -F 1 }, |
141 | '-42', |
142 | '-F calls the F function' |
143 | ); |
144 | } |
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145 | |
146 | # Bug #24762 |
147 | { |
148 | eval q{ *foo{CODE} ? 1 : 0 }; |
149 | is( $@, '', "glob subscript in conditional" ); |
150 | } |
500bedb6 |
151 | |
152 | # Bug #25824 |
153 | { |
154 | eval q{ sub f { @a=@b=@c; {use} } }; |
155 | like( $@, qr/syntax error/, "use without body" ); |
156 | } |
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157 | |
158 | # Bug #27024 |
159 | { |
160 | # this used to segfault (because $[=1 is optimized away to a null block) |
161 | my $x; |
162 | $[ = 1 while $x; |
163 | pass(); |
1bca678f |
164 | $[ = 0; # restore the original value for less side-effects |
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165 | } |
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166 | |
167 | # [perl #2738] perl segfautls on input |
168 | { |
169 | eval q{ sub _ <> {} }; |
170 | like($@, qr/Illegal declaration of subroutine main::_/, "readline operator as prototype"); |
171 | |
172 | eval q{ $s = sub <> {} }; |
173 | like($@, qr/Illegal declaration of anonymous subroutine/, "readline operator as prototype"); |
174 | |
175 | eval q{ sub _ __FILE__ {} }; |
176 | like($@, qr/Illegal declaration of subroutine main::_/, "__FILE__ as prototype"); |
177 | } |
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178 | |
179 | # [perl #36313] perl -e "1for$[=0" crash |
180 | { |
181 | my $x; |
182 | $x = 1 for ($[) = 0; |
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'); |
186 | $x = ($[=2.4); |
187 | is($x, 2, 'scalar assignment to $[ behaves like other variables'); |
188 | $x = (($[) = 0); |
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 $['); |
196 | eval q{ ($[) = () }; |
197 | like($@, qr/That use of \$\[ is unsupported/, |
198 | 'cannot assign list of <1 elements to $['); |
199 | } |
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200 | |
201 | # tests for "Bad name" |
202 | eval q{ foo::$bar }; |
203 | like( $@, qr/Bad name after foo::/, 'Bad name after foo::' ); |
204 | eval q{ foo''bar }; |
205 | like( $@, qr/Bad name after foo'/, 'Bad name after foo\'' ); |
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206 | |
207 | # test for ?: context error |
208 | eval q{($a ? $x : ($y)) = 5}; |
209 | like( $@, qr/Assignment to both a list and a scalar/, 'Assignment to both a list and a scalar' ); |