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Restore the two variables retired by the change #19268
[perl5.git] / t / comp / parser.t
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923be969
RGS
1#!./perl
2
3# Checks if the parser behaves correctly in edge cases
4# (including weird syntax errors)
5
6BEGIN {
7 chdir 't' if -d 't';
8 @INC = '../lib';
9}
10
f15b33d3 11require "./test.pl";
4a202259 12plan( tests => 21 );
f15b33d3
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13
14eval '%@x=0;';
15like( $@, qr/^Can't modify hash dereference in repeat \(x\)/, '%@x=0' );
16
17# Bug 20010422.005
18eval q{{s//${}/; //}};
19like( $@, qr/syntax error/, 'syntax error, used to dump core' );
20
21# Bug 20010528.007
22eval q/"\x{"/;
23like( $@, qr/^Missing right brace on \\x/,
24 'syntax error in string, used to dump core' );
25
26eval "a.b.c.d.e.f;sub";
27like( $@, qr/^Illegal declaration of anonymous subroutine/,
28 'found by Markov chain stress testing' );
29
30# Bug 20010831.001
31eval '($a, b) = (1, 2);';
32like( $@, qr/^Can't modify constant item in list assignment/,
33 'bareword in list assignment' );
34
35eval 'tie FOO, "Foo";';
36like( $@, qr/^Can't modify constant item in tie /,
37 'tying a bareword causes a segfault in 5.6.1' );
38
39eval 'undef foo';
40like( $@, qr/^Can't modify constant item in undef operator /,
41 'undefing constant causes a segfault in 5.6.1 [ID 20010906.019]' );
42
43eval 'read($bla, FILE, 1);';
44like( $@, qr/^Can't modify constant item in read /,
45 'read($var, FILE, 1) segfaults on 5.6.1 [ID 20011025.054]' );
923be969
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46
47# This used to dump core (bug #17920)
48eval q{ sub { sub { f1(f2();); my($a,$b,$c) } } };
f15b33d3 49like( $@, qr/error/, 'lexical block discarded by yacc' );
961ce445
RGS
50
51# bug #18573, used to corrupt memory
52eval q{ "\c" };
53like( $@, qr/^Missing control char name in \\c/, q("\c" string) );
8edd5f42
RGS
54
55# two tests for memory corruption problems in the said variables
56# (used to dump core or produce strange results)
57
58is( "\Q\Q\Q\Q\Q\Q\Q\Q\Q\Q\Q\Q\Qa", "a", "PL_lex_casestack" );
59
60eval {
61{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{
62{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{
63{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{{
64}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}
65}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}
66}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}
67};
68is( $@, '', 'PL_lex_brackstack' );
437fd210
AE
69
70{
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AE
71 # tests for bug #20716
72 undef $a;
73 undef @b;
74 my $a="A";
75 is("${a}{", "A{", "interpolation, qq//");
76 is("${a}[", "A[", "interpolation, qq//");
77 my @b=("B");
78 is("@{b}{", "B{", "interpolation, qq//");
79 is(qr/${a}{/, '(?-xism:A{)', "interpolation, qr//");
80 my $c = "A{";
81 $c =~ /${a}{/;
82 is($&, 'A{', "interpolation, m//");
83 $c =~ s/${a}{/foo/;
84 is($c, 'foo', "interpolation, s/...//");
85 $c =~ s/foo/${a}{/;
86 is($c, 'A{', "interpolation, s//.../");
87 is(<<"${a}{", "A{ A[ B{\n", "interpolation, here doc");
88${a}{ ${a}[ @{b}{
89${a}{
437fd210 90}
4a202259
AE
91
92# Bug #21575
93# ensure that the second print statement works, by playing a bit
94# with the test output.
95my %data = ( foo => "\n" );
96print "#";
97print(
98$data{foo});
99pass();